s_server.c@ 102210

Last change on this file since 102210 was 101211, checked in by vboxsync, 15 months ago
openssl-3.1.3: Applied and adjusted our OpenSSL changes to 3.1.2. bugref:10527
File size: 120.2 KB

Line
1	/*
2	* Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
3	* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4	* Copyright 2005 Nokia. All rights reserved.
5	*
6	* Licensed under the Apache License 2.0 (the "License"). You may not use
7	* this file except in compliance with the License. You can obtain a copy
8	* in the file LICENSE in the source distribution or at
9	* https://www.openssl.org/source/license.html
10	*/
11
12	#include <ctype.h>
13	#include <stdio.h>
14	#include <stdlib.h>
15	#include <string.h>
16	#if defined(_WIN32)
17	/* Included before async.h to avoid some warnings */
18	# include <windows.h>
19	#endif
20
21	#include <openssl/e_os2.h>
22	#include <openssl/async.h>
23	#include <openssl/ssl.h>
24	#include <openssl/decoder.h>
25
26	#ifndef OPENSSL_NO_SOCK
27
28	/*
29	* With IPv6, it looks like Digital has mixed up the proper order of
30	* recursive header file inclusion, resulting in the compiler complaining
31	* that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is
32	* needed to have fileno() declared correctly... So let's define u_int
33	*/
34	#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
35	# define __U_INT
36	typedef unsigned int u_int;
37	#endif
38
39	#include <openssl/bn.h>
40	#include "apps.h"
41	#include "progs.h"
42	#include <openssl/err.h>
43	#include <openssl/pem.h>
44	#include <openssl/x509.h>
45	#include <openssl/rand.h>
46	#include <openssl/ocsp.h>
47	#ifndef OPENSSL_NO_DH
48	# include <openssl/dh.h>
49	#endif
50	#include <openssl/rsa.h>
51	#include "s_apps.h"
52	#include "timeouts.h"
53	#ifdef CHARSET_EBCDIC
54	#include <openssl/ebcdic.h>
55	#endif
56	#include "internal/sockets.h"
57
58	static int not_resumable_sess_cb(SSL *s, int is_forward_secure);
59	static int sv_body(int s, int stype, int prot, unsigned char *context);
60	static int www_body(int s, int stype, int prot, unsigned char *context);
61	static int rev_body(int s, int stype, int prot, unsigned char *context);
62	static void close_accept_socket(void);
63	static int init_ssl_connection(SSL *s);
64	static void print_stats(BIO bp, SSL_CTX ctx);
65	static int generate_session_id(SSL ssl, unsigned char id,
66	unsigned int *id_len);
67	static void init_session_cache_ctx(SSL_CTX *sctx);
68	static void free_sessions(void);
69	static void print_connection_info(SSL *con);
70
71	static const int bufsize = 16 * 1024;
72	static int accept_socket = -1;
73
74	#define TEST_CERT "server.pem"
75	#define TEST_CERT2 "server2.pem"
76
77	static int s_nbio = 0;
78	static int s_nbio_test = 0;
79	static int s_crlf = 0;
80	static SSL_CTX *ctx = NULL;
81	static SSL_CTX *ctx2 = NULL;
82	static int www = 0;
83
84	static BIO *bio_s_out = NULL;
85	static BIO *bio_s_msg = NULL;
86	static int s_debug = 0;
87	static int s_tlsextdebug = 0;
88	static int s_msg = 0;
89	static int s_quiet = 0;
90	static int s_ign_eof = 0;
91	static int s_brief = 0;
92
93	static char *keymatexportlabel = NULL;
94	static int keymatexportlen = 20;
95
96	static int async = 0;
97
98	static int use_sendfile = 0;
99
100	static const char *session_id_prefix = NULL;
101
102	#ifndef OPENSSL_NO_DTLS
103	static int enable_timeouts = 0;
104	static long socket_mtu;
105	#endif
106
107	/*
108	* We define this but make it always be 0 in no-dtls builds to simplify the
109	* code.
110	*/
111	static int dtlslisten = 0;
112	static int stateless = 0;
113
114	static int early_data = 0;
115	static SSL_SESSION *psksess = NULL;
116
117	static char *psk_identity = "Client_identity";
118	char psk_key = NULL; / by default PSK is not used */
119
120	static char http_server_binmode = 0; /* for now: 0/1 = default/binary */
121
122	#ifndef OPENSSL_NO_PSK
123	static unsigned int psk_server_cb(SSL ssl, const char identity,
124	unsigned char *psk,
125	unsigned int max_psk_len)
126	{
127	long key_len = 0;
128	unsigned char *key;
129
130	if (s_debug)
131	BIO_printf(bio_s_out, "psk_server_cb\n");
132
133	if (!SSL_is_dtls(ssl) && SSL_version(ssl) >= TLS1_3_VERSION) {
134	/*
135	* This callback is designed for use in (D)TLSv1.2 (or below). It is
136	* possible to use a single callback for all protocol versions - but it
137	* is preferred to use a dedicated callback for TLSv1.3. For TLSv1.3 we
138	* have psk_find_session_cb.
139	*/
140	return 0;
141	}
142
143	if (identity == NULL) {
144	BIO_printf(bio_err, "Error: client did not send PSK identity\n");
145	goto out_err;
146	}
147	if (s_debug)
148	BIO_printf(bio_s_out, "identity_len=%d identity=%s\n",
149	(int)strlen(identity), identity);
150
151	/* here we could lookup the given identity e.g. from a database */
152	if (strcmp(identity, psk_identity) != 0) {
153	BIO_printf(bio_s_out, "PSK warning: client identity not what we expected"
154	" (got '%s' expected '%s')\n", identity, psk_identity);
155	} else {
156	if (s_debug)
157	BIO_printf(bio_s_out, "PSK client identity found\n");
158	}
159
160	/* convert the PSK key to binary */
161	key = OPENSSL_hexstr2buf(psk_key, &key_len);
162	if (key == NULL) {
163	BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
164	psk_key);
165	return 0;
166	}
167	if (key_len > (int)max_psk_len) {
168	BIO_printf(bio_err,
169	"psk buffer of callback is too small (%d) for key (%ld)\n",
170	max_psk_len, key_len);
171	OPENSSL_free(key);
172	return 0;
173	}
174
175	memcpy(psk, key, key_len);
176	OPENSSL_free(key);
177
178	if (s_debug)
179	BIO_printf(bio_s_out, "fetched PSK len=%ld\n", key_len);
180	return key_len;
181	out_err:
182	if (s_debug)
183	BIO_printf(bio_err, "Error in PSK server callback\n");
184	(void)BIO_flush(bio_err);
185	(void)BIO_flush(bio_s_out);
186	return 0;
187	}
188	#endif
189
190	static int psk_find_session_cb(SSL ssl, const unsigned char identity,
191	size_t identity_len, SSL_SESSION **sess)
192	{
193	SSL_SESSION *tmpsess = NULL;
194	unsigned char *key;
195	long key_len;
196	const SSL_CIPHER *cipher = NULL;
197
198	if (strlen(psk_identity) != identity_len
199	\|\| memcmp(psk_identity, identity, identity_len) != 0) {
200	*sess = NULL;
201	return 1;
202	}
203
204	if (psksess != NULL) {
205	SSL_SESSION_up_ref(psksess);
206	*sess = psksess;
207	return 1;
208	}
209
210	key = OPENSSL_hexstr2buf(psk_key, &key_len);
211	if (key == NULL) {
212	BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
213	psk_key);
214	return 0;
215	}
216
217	/* We default to SHA256 */
218	cipher = SSL_CIPHER_find(ssl, tls13_aes128gcmsha256_id);
219	if (cipher == NULL) {
220	BIO_printf(bio_err, "Error finding suitable ciphersuite\n");
221	OPENSSL_free(key);
222	return 0;
223	}
224
225	tmpsess = SSL_SESSION_new();
226	if (tmpsess == NULL
227	\|\| !SSL_SESSION_set1_master_key(tmpsess, key, key_len)
228	\|\| !SSL_SESSION_set_cipher(tmpsess, cipher)
229	\|\| !SSL_SESSION_set_protocol_version(tmpsess, SSL_version(ssl))) {
230	OPENSSL_free(key);
231	SSL_SESSION_free(tmpsess);
232	return 0;
233	}
234	OPENSSL_free(key);
235	*sess = tmpsess;
236
237	return 1;
238	}
239
240	#ifndef OPENSSL_NO_SRP
241	static srpsrvparm srp_callback_parm;
242	#endif
243
244	static int local_argc = 0;
245	static char **local_argv;
246
247	#ifdef CHARSET_EBCDIC
248	static int ebcdic_new(BIO *bi);
249	static int ebcdic_free(BIO *a);
250	static int ebcdic_read(BIO b, char out, int outl);
251	static int ebcdic_write(BIO b, const char in, int inl);
252	static long ebcdic_ctrl(BIO b, int cmd, long num, void ptr);
253	static int ebcdic_gets(BIO bp, char buf, int size);
254	static int ebcdic_puts(BIO bp, const char str);
255
256	# define BIO_TYPE_EBCDIC_FILTER (18\|0x0200)
257	static BIO_METHOD *methods_ebcdic = NULL;
258
259	/* This struct is "unwarranted chumminess with the compiler." */
260	typedef struct {
261	size_t alloced;
262	char buff[1];
263	} EBCDIC_OUTBUFF;
264
265	static const BIO_METHOD *BIO_f_ebcdic_filter()
266	{
267	if (methods_ebcdic == NULL) {
268	methods_ebcdic = BIO_meth_new(BIO_TYPE_EBCDIC_FILTER,
269	"EBCDIC/ASCII filter");
270	if (methods_ebcdic == NULL
271	\|\| !BIO_meth_set_write(methods_ebcdic, ebcdic_write)
272	\|\| !BIO_meth_set_read(methods_ebcdic, ebcdic_read)
273	\|\| !BIO_meth_set_puts(methods_ebcdic, ebcdic_puts)
274	\|\| !BIO_meth_set_gets(methods_ebcdic, ebcdic_gets)
275	\|\| !BIO_meth_set_ctrl(methods_ebcdic, ebcdic_ctrl)
276	\|\| !BIO_meth_set_create(methods_ebcdic, ebcdic_new)
277	\|\| !BIO_meth_set_destroy(methods_ebcdic, ebcdic_free))
278	return NULL;
279	}
280	return methods_ebcdic;
281	}
282
283	static int ebcdic_new(BIO *bi)
284	{
285	EBCDIC_OUTBUFF *wbuf;
286
287	wbuf = app_malloc(sizeof(*wbuf) + 1024, "ebcdic wbuf");
288	wbuf->alloced = 1024;
289	wbuf->buff[0] = '\0';
290
291	BIO_set_data(bi, wbuf);
292	BIO_set_init(bi, 1);
293	return 1;
294	}
295
296	static int ebcdic_free(BIO *a)
297	{
298	EBCDIC_OUTBUFF *wbuf;
299
300	if (a == NULL)
301	return 0;
302	wbuf = BIO_get_data(a);
303	OPENSSL_free(wbuf);
304	BIO_set_data(a, NULL);
305	BIO_set_init(a, 0);
306
307	return 1;
308	}
309
310	static int ebcdic_read(BIO b, char out, int outl)
311	{
312	int ret = 0;
313	BIO *next = BIO_next(b);
314
315	if (out == NULL \|\| outl == 0)
316	return 0;
317	if (next == NULL)
318	return 0;
319
320	ret = BIO_read(next, out, outl);
321	if (ret > 0)
322	ascii2ebcdic(out, out, ret);
323	return ret;
324	}
325
326	static int ebcdic_write(BIO b, const char in, int inl)
327	{
328	EBCDIC_OUTBUFF *wbuf;
329	BIO *next = BIO_next(b);
330	int ret = 0;
331	int num;
332
333	if ((in == NULL) \|\| (inl <= 0))
334	return 0;
335	if (next == NULL)
336	return 0;
337
338	wbuf = (EBCDIC_OUTBUFF *) BIO_get_data(b);
339
340	if (inl > (num = wbuf->alloced)) {
341	num = num + num; /* double the size */
342	if (num < inl)
343	num = inl;
344	OPENSSL_free(wbuf);
345	wbuf = app_malloc(sizeof(*wbuf) + num, "grow ebcdic wbuf");
346
347	wbuf->alloced = num;
348	wbuf->buff[0] = '\0';
349
350	BIO_set_data(b, wbuf);
351	}
352
353	ebcdic2ascii(wbuf->buff, in, inl);
354
355	ret = BIO_write(next, wbuf->buff, inl);
356
357	return ret;
358	}
359
360	static long ebcdic_ctrl(BIO b, int cmd, long num, void ptr)
361	{
362	long ret;
363	BIO *next = BIO_next(b);
364
365	if (next == NULL)
366	return 0;
367	switch (cmd) {
368	case BIO_CTRL_DUP:
369	ret = 0L;
370	break;
371	default:
372	ret = BIO_ctrl(next, cmd, num, ptr);
373	break;
374	}
375	return ret;
376	}
377
378	static int ebcdic_gets(BIO bp, char buf, int size)
379	{
380	int i, ret = 0;
381	BIO *next = BIO_next(bp);
382
383	if (next == NULL)
384	return 0;
385	/* return(BIO_gets(bp->next_bio,buf,size));*/
386	for (i = 0; i < size - 1; ++i) {
387	ret = ebcdic_read(bp, &buf[i], 1);
388	if (ret <= 0)
389	break;
390	else if (buf[i] == '\n') {
391	++i;
392	break;
393	}
394	}
395	if (i < size)
396	buf[i] = '\0';
397	return (ret < 0 && i == 0) ? ret : i;
398	}
399
400	static int ebcdic_puts(BIO bp, const char str)
401	{
402	if (BIO_next(bp) == NULL)
403	return 0;
404	return ebcdic_write(bp, str, strlen(str));
405	}
406	#endif
407
408	/* This is a context that we pass to callbacks */
409	typedef struct tlsextctx_st {
410	char *servername;
411	BIO *biodebug;
412	int extension_error;
413	} tlsextctx;
414
415	static int ssl_servername_cb(SSL s, int ad, void *arg)
416	{
417	tlsextctx p = (tlsextctx ) arg;
418	const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
419
420	if (servername != NULL && p->biodebug != NULL) {
421	const char *cp = servername;
422	unsigned char uc;
423
424	BIO_printf(p->biodebug, "Hostname in TLS extension: \"");
425	while ((uc = *cp++) != 0)
426	BIO_printf(p->biodebug,
427	(((uc) & ~127) == 0) && isprint(uc) ? "%c" : "\\x%02x", uc);
428	BIO_printf(p->biodebug, "\"\n");
429	}
430
431	if (p->servername == NULL)
432	return SSL_TLSEXT_ERR_NOACK;
433
434	if (servername != NULL) {
435	if (OPENSSL_strcasecmp(servername, p->servername))
436	return p->extension_error;
437	if (ctx2 != NULL) {
438	BIO_printf(p->biodebug, "Switching server context.\n");
439	SSL_set_SSL_CTX(s, ctx2);
440	}
441	}
442	return SSL_TLSEXT_ERR_OK;
443	}
444
445	/* Structure passed to cert status callback */
446	typedef struct tlsextstatusctx_st {
447	int timeout;
448	/* File to load OCSP Response from (or NULL if no file) */
449	char *respin;
450	/* Default responder to use */
451	char host, path, *port;
452	char proxy, no_proxy;
453	int use_ssl;
454	int verbose;
455	} tlsextstatusctx;
456
457	static tlsextstatusctx tlscstatp = { -1 };
458
459	#ifndef OPENSSL_NO_OCSP
460
461	/*
462	* Helper function to get an OCSP_RESPONSE from a responder. This is a
463	* simplified version. It examines certificates each time and makes one OCSP
464	* responder query for each request. A full version would store details such as
465	* the OCSP certificate IDs and minimise the number of OCSP responses by caching
466	* them until they were considered "expired".
467	*/
468	static int get_ocsp_resp_from_responder(SSL s, tlsextstatusctx srctx,
469	OCSP_RESPONSE **resp)
470	{
471	char host = NULL, port = NULL, *path = NULL;
472	char proxy = NULL, no_proxy = NULL;
473	int use_ssl;
474	STACK_OF(OPENSSL_STRING) *aia = NULL;
475	X509 *x = NULL;
476	X509_STORE_CTX *inctx = NULL;
477	X509_OBJECT *obj;
478	OCSP_REQUEST *req = NULL;
479	OCSP_CERTID *id = NULL;
480	STACK_OF(X509_EXTENSION) *exts;
481	int ret = SSL_TLSEXT_ERR_NOACK;
482	int i;
483
484	/* Build up OCSP query from server certificate */
485	x = SSL_get_certificate(s);
486	aia = X509_get1_ocsp(x);
487	if (aia != NULL) {
488	if (!OSSL_HTTP_parse_url(sk_OPENSSL_STRING_value(aia, 0), &use_ssl,
489	NULL, &host, &port, NULL, &path, NULL, NULL)) {
490	BIO_puts(bio_err, "cert_status: can't parse AIA URL\n");
491	goto err;
492	}
493	if (srctx->verbose)
494	BIO_printf(bio_err, "cert_status: AIA URL: %s\n",
495	sk_OPENSSL_STRING_value(aia, 0));
496	} else {
497	if (srctx->host == NULL) {
498	BIO_puts(bio_err,
499	"cert_status: no AIA and no default responder URL\n");
500	goto done;
501	}
502	host = srctx->host;
503	path = srctx->path;
504	port = srctx->port;
505	use_ssl = srctx->use_ssl;
506	}
507	proxy = srctx->proxy;
508	no_proxy = srctx->no_proxy;
509
510	inctx = X509_STORE_CTX_new();
511	if (inctx == NULL)
512	goto err;
513	if (!X509_STORE_CTX_init(inctx,
514	SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
515	NULL, NULL))
516	goto err;
517	obj = X509_STORE_CTX_get_obj_by_subject(inctx, X509_LU_X509,
518	X509_get_issuer_name(x));
519	if (obj == NULL) {
520	BIO_puts(bio_err, "cert_status: Can't retrieve issuer certificate.\n");
521	goto done;
522	}
523	id = OCSP_cert_to_id(NULL, x, X509_OBJECT_get0_X509(obj));
524	X509_OBJECT_free(obj);
525	if (id == NULL)
526	goto err;
527	req = OCSP_REQUEST_new();
528	if (req == NULL)
529	goto err;
530	if (!OCSP_request_add0_id(req, id))
531	goto err;
532	id = NULL;
533	/* Add any extensions to the request */
534	SSL_get_tlsext_status_exts(s, &exts);
535	for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
536	X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
537	if (!OCSP_REQUEST_add_ext(req, ext, -1))
538	goto err;
539	}
540	*resp = process_responder(req, host, port, path, proxy, no_proxy,
541	use_ssl, NULL /* headers */, srctx->timeout);
542	if (*resp == NULL) {
543	BIO_puts(bio_err, "cert_status: error querying responder\n");
544	goto done;
545	}
546
547	ret = SSL_TLSEXT_ERR_OK;
548	goto done;
549
550	err:
551	ret = SSL_TLSEXT_ERR_ALERT_FATAL;
552	done:
553	/*
554	* If we parsed aia we need to free; otherwise they were copied and we
555	* don't
556	*/
557	if (aia != NULL) {
558	OPENSSL_free(host);
559	OPENSSL_free(path);
560	OPENSSL_free(port);
561	X509_email_free(aia);
562	}
563	OCSP_CERTID_free(id);
564	OCSP_REQUEST_free(req);
565	X509_STORE_CTX_free(inctx);
566	return ret;
567	}
568
569	/*
570	* Certificate Status callback. This is called when a client includes a
571	* certificate status request extension. The response is either obtained from a
572	* file, or from an OCSP responder.
573	*/
574	static int cert_status_cb(SSL s, void arg)
575	{
576	tlsextstatusctx *srctx = arg;
577	OCSP_RESPONSE *resp = NULL;
578	unsigned char *rspder = NULL;
579	int rspderlen;
580	int ret = SSL_TLSEXT_ERR_ALERT_FATAL;
581
582	if (srctx->verbose)
583	BIO_puts(bio_err, "cert_status: callback called\n");
584
585	if (srctx->respin != NULL) {
586	BIO *derbio = bio_open_default(srctx->respin, 'r', FORMAT_ASN1);
587	if (derbio == NULL) {
588	BIO_puts(bio_err, "cert_status: Cannot open OCSP response file\n");
589	goto err;
590	}
591	resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
592	BIO_free(derbio);
593	if (resp == NULL) {
594	BIO_puts(bio_err, "cert_status: Error reading OCSP response\n");
595	goto err;
596	}
597	} else {
598	ret = get_ocsp_resp_from_responder(s, srctx, &resp);
599	if (ret != SSL_TLSEXT_ERR_OK)
600	goto err;
601	}
602
603	rspderlen = i2d_OCSP_RESPONSE(resp, &rspder);
604	if (rspderlen <= 0)
605	goto err;
606
607	SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen);
608	if (srctx->verbose) {
609	BIO_puts(bio_err, "cert_status: ocsp response sent:\n");
610	OCSP_RESPONSE_print(bio_err, resp, 2);
611	}
612
613	ret = SSL_TLSEXT_ERR_OK;
614
615	err:
616	if (ret != SSL_TLSEXT_ERR_OK)
617	ERR_print_errors(bio_err);
618
619	OCSP_RESPONSE_free(resp);
620
621	return ret;
622	}
623	#endif
624
625	#ifndef OPENSSL_NO_NEXTPROTONEG
626	/* This is the context that we pass to next_proto_cb */
627	typedef struct tlsextnextprotoctx_st {
628	unsigned char *data;
629	size_t len;
630	} tlsextnextprotoctx;
631
632	static int next_proto_cb(SSL s, const unsigned char *data,
633	unsigned int len, void arg)
634	{
635	tlsextnextprotoctx *next_proto = arg;
636
637	*data = next_proto->data;
638	*len = next_proto->len;
639
640	return SSL_TLSEXT_ERR_OK;
641	}
642	#endif /* ndef OPENSSL_NO_NEXTPROTONEG */
643
644	/* This the context that we pass to alpn_cb */
645	typedef struct tlsextalpnctx_st {
646	unsigned char *data;
647	size_t len;
648	} tlsextalpnctx;
649
650	static int alpn_cb(SSL s, const unsigned char out, unsigned char outlen,
651	const unsigned char in, unsigned int inlen, void arg)
652	{
653	tlsextalpnctx *alpn_ctx = arg;
654
655	if (!s_quiet) {
656	/* We can assume that \|in\| is syntactically valid. */
657	unsigned int i;
658	BIO_printf(bio_s_out, "ALPN protocols advertised by the client: ");
659	for (i = 0; i < inlen;) {
660	if (i)
661	BIO_write(bio_s_out, ", ", 2);
662	BIO_write(bio_s_out, &in[i + 1], in[i]);
663	i += in[i] + 1;
664	}
665	BIO_write(bio_s_out, "\n", 1);
666	}
667
668	if (SSL_select_next_proto
669	((unsigned char **)out, outlen, alpn_ctx->data, alpn_ctx->len, in,
670	inlen) != OPENSSL_NPN_NEGOTIATED) {
671	return SSL_TLSEXT_ERR_ALERT_FATAL;
672	}
673
674	if (!s_quiet) {
675	BIO_printf(bio_s_out, "ALPN protocols selected: ");
676	BIO_write(bio_s_out, out, outlen);
677	BIO_write(bio_s_out, "\n", 1);
678	}
679
680	return SSL_TLSEXT_ERR_OK;
681	}
682
683	static int not_resumable_sess_cb(SSL *s, int is_forward_secure)
684	{
685	/* disable resumption for sessions with forward secure ciphers */
686	return is_forward_secure;
687	}
688
689	typedef enum OPTION_choice {
690	OPT_COMMON,
691	OPT_ENGINE,
692	OPT_4, OPT_6, OPT_ACCEPT, OPT_PORT, OPT_UNIX, OPT_UNLINK, OPT_NACCEPT,
693	OPT_VERIFY, OPT_NAMEOPT, OPT_UPPER_V_VERIFY, OPT_CONTEXT, OPT_CERT, OPT_CRL,
694	OPT_CRL_DOWNLOAD, OPT_SERVERINFO, OPT_CERTFORM, OPT_KEY, OPT_KEYFORM,
695	OPT_PASS, OPT_CERT_CHAIN, OPT_DHPARAM, OPT_DCERTFORM, OPT_DCERT,
696	OPT_DKEYFORM, OPT_DPASS, OPT_DKEY, OPT_DCERT_CHAIN, OPT_NOCERT,
697	OPT_CAPATH, OPT_NOCAPATH, OPT_CHAINCAPATH, OPT_VERIFYCAPATH, OPT_NO_CACHE,
698	OPT_EXT_CACHE, OPT_CRLFORM, OPT_VERIFY_RET_ERROR, OPT_VERIFY_QUIET,
699	OPT_BUILD_CHAIN, OPT_CAFILE, OPT_NOCAFILE, OPT_CHAINCAFILE,
700	OPT_VERIFYCAFILE,
701	OPT_CASTORE, OPT_NOCASTORE, OPT_CHAINCASTORE, OPT_VERIFYCASTORE,
702	OPT_NBIO, OPT_NBIO_TEST, OPT_IGN_EOF, OPT_NO_IGN_EOF,
703	OPT_DEBUG, OPT_TLSEXTDEBUG, OPT_STATUS, OPT_STATUS_VERBOSE,
704	OPT_STATUS_TIMEOUT, OPT_PROXY, OPT_NO_PROXY, OPT_STATUS_URL,
705	OPT_STATUS_FILE, OPT_MSG, OPT_MSGFILE,
706	OPT_TRACE, OPT_SECURITY_DEBUG, OPT_SECURITY_DEBUG_VERBOSE, OPT_STATE,
707	OPT_CRLF, OPT_QUIET, OPT_BRIEF, OPT_NO_DHE,
708	OPT_NO_RESUME_EPHEMERAL, OPT_PSK_IDENTITY, OPT_PSK_HINT, OPT_PSK,
709	OPT_PSK_SESS, OPT_SRPVFILE, OPT_SRPUSERSEED, OPT_REV, OPT_WWW,
710	OPT_UPPER_WWW, OPT_HTTP, OPT_ASYNC, OPT_SSL_CONFIG,
711	OPT_MAX_SEND_FRAG, OPT_SPLIT_SEND_FRAG, OPT_MAX_PIPELINES, OPT_READ_BUF,
712	OPT_SSL3, OPT_TLS1_3, OPT_TLS1_2, OPT_TLS1_1, OPT_TLS1, OPT_DTLS, OPT_DTLS1,
713	OPT_DTLS1_2, OPT_SCTP, OPT_TIMEOUT, OPT_MTU, OPT_LISTEN, OPT_STATELESS,
714	OPT_ID_PREFIX, OPT_SERVERNAME, OPT_SERVERNAME_FATAL,
715	OPT_CERT2, OPT_KEY2, OPT_NEXTPROTONEG, OPT_ALPN, OPT_SENDFILE,
716	OPT_SRTP_PROFILES, OPT_KEYMATEXPORT, OPT_KEYMATEXPORTLEN,
717	OPT_KEYLOG_FILE, OPT_MAX_EARLY, OPT_RECV_MAX_EARLY, OPT_EARLY_DATA,
718	OPT_S_NUM_TICKETS, OPT_ANTI_REPLAY, OPT_NO_ANTI_REPLAY, OPT_SCTP_LABEL_BUG,
719	OPT_HTTP_SERVER_BINMODE, OPT_NOCANAMES, OPT_IGNORE_UNEXPECTED_EOF,
720	OPT_R_ENUM,
721	OPT_S_ENUM,
722	OPT_V_ENUM,
723	OPT_X_ENUM,
724	OPT_PROV_ENUM
725	} OPTION_CHOICE;
726
727	const OPTIONS s_server_options[] = {
728	OPT_SECTION("General"),
729	{"help", OPT_HELP, '-', "Display this summary"},
730	{"ssl_config", OPT_SSL_CONFIG, 's',
731	"Configure SSL_CTX using the given configuration value"},
732	#ifndef OPENSSL_NO_SSL_TRACE
733	{"trace", OPT_TRACE, '-', "trace protocol messages"},
734	#endif
735	#ifndef OPENSSL_NO_ENGINE
736	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
737	#endif
738
739	OPT_SECTION("Network"),
740	{"port", OPT_PORT, 'p',
741	"TCP/IP port to listen on for connections (default is " PORT ")"},
742	{"accept", OPT_ACCEPT, 's',
743	"TCP/IP optional host and port to listen on for connections (default is *:" PORT ")"},
744	#ifdef AF_UNIX
745	{"unix", OPT_UNIX, 's', "Unix domain socket to accept on"},
746	{"unlink", OPT_UNLINK, '-', "For -unix, unlink existing socket first"},
747	#endif
748	{"4", OPT_4, '-', "Use IPv4 only"},
749	{"6", OPT_6, '-', "Use IPv6 only"},
750
751	OPT_SECTION("Identity"),
752	{"context", OPT_CONTEXT, 's', "Set session ID context"},
753	{"CAfile", OPT_CAFILE, '<', "PEM format file of CA's"},
754	{"CApath", OPT_CAPATH, '/', "PEM format directory of CA's"},
755	{"CAstore", OPT_CASTORE, ':', "URI to store of CA's"},
756	{"no-CAfile", OPT_NOCAFILE, '-',
757	"Do not load the default certificates file"},
758	{"no-CApath", OPT_NOCAPATH, '-',
759	"Do not load certificates from the default certificates directory"},
760	{"no-CAstore", OPT_NOCASTORE, '-',
761	"Do not load certificates from the default certificates store URI"},
762	{"nocert", OPT_NOCERT, '-', "Don't use any certificates (Anon-DH)"},
763	{"verify", OPT_VERIFY, 'n', "Turn on peer certificate verification"},
764	{"Verify", OPT_UPPER_V_VERIFY, 'n',
765	"Turn on peer certificate verification, must have a cert"},
766	{"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
767	{"cert", OPT_CERT, '<', "Server certificate file to use; default " TEST_CERT},
768	{"cert2", OPT_CERT2, '<',
769	"Certificate file to use for servername; default " TEST_CERT2},
770	{"certform", OPT_CERTFORM, 'F',
771	"Server certificate file format (PEM/DER/P12); has no effect"},
772	{"cert_chain", OPT_CERT_CHAIN, '<',
773	"Server certificate chain file in PEM format"},
774	{"build_chain", OPT_BUILD_CHAIN, '-', "Build server certificate chain"},
775	{"serverinfo", OPT_SERVERINFO, 's',
776	"PEM serverinfo file for certificate"},
777	{"key", OPT_KEY, 's',
778	"Private key file to use; default is -cert file or else" TEST_CERT},
779	{"key2", OPT_KEY2, '<',
780	"-Private Key file to use for servername if not in -cert2"},
781	{"keyform", OPT_KEYFORM, 'f', "Key format (ENGINE, other values ignored)"},
782	{"pass", OPT_PASS, 's', "Private key and cert file pass phrase source"},
783	{"dcert", OPT_DCERT, '<',
784	"Second server certificate file to use (usually for DSA)"},
785	{"dcertform", OPT_DCERTFORM, 'F',
786	"Second server certificate file format (PEM/DER/P12); has no effect"},
787	{"dcert_chain", OPT_DCERT_CHAIN, '<',
788	"second server certificate chain file in PEM format"},
789	{"dkey", OPT_DKEY, '<',
790	"Second private key file to use (usually for DSA)"},
791	{"dkeyform", OPT_DKEYFORM, 'f',
792	"Second key file format (ENGINE, other values ignored)"},
793	{"dpass", OPT_DPASS, 's',
794	"Second private key and cert file pass phrase source"},
795	{"dhparam", OPT_DHPARAM, '<', "DH parameters file to use"},
796	{"servername", OPT_SERVERNAME, 's',
797	"Servername for HostName TLS extension"},
798	{"servername_fatal", OPT_SERVERNAME_FATAL, '-',
799	"On servername mismatch send fatal alert (default warning alert)"},
800	{"nbio_test", OPT_NBIO_TEST, '-', "Test with the non-blocking test bio"},
801	{"crlf", OPT_CRLF, '-', "Convert LF from terminal into CRLF"},
802	{"quiet", OPT_QUIET, '-', "No server output"},
803	{"no_resume_ephemeral", OPT_NO_RESUME_EPHEMERAL, '-',
804	"Disable caching and tickets if ephemeral (EC)DH is used"},
805	{"www", OPT_WWW, '-', "Respond to a 'GET /' with a status page"},
806	{"WWW", OPT_UPPER_WWW, '-', "Respond to a 'GET with the file ./path"},
807	{"ignore_unexpected_eof", OPT_IGNORE_UNEXPECTED_EOF, '-',
808	"Do not treat lack of close_notify from a peer as an error"},
809	{"tlsextdebug", OPT_TLSEXTDEBUG, '-',
810	"Hex dump of all TLS extensions received"},
811	{"HTTP", OPT_HTTP, '-', "Like -WWW but ./path includes HTTP headers"},
812	{"id_prefix", OPT_ID_PREFIX, 's',
813	"Generate SSL/TLS session IDs prefixed by arg"},
814	{"keymatexport", OPT_KEYMATEXPORT, 's',
815	"Export keying material using label"},
816	{"keymatexportlen", OPT_KEYMATEXPORTLEN, 'p',
817	"Export len bytes of keying material; default 20"},
818	{"CRL", OPT_CRL, '<', "CRL file to use"},
819	{"CRLform", OPT_CRLFORM, 'F', "CRL file format (PEM or DER); default PEM"},
820	{"crl_download", OPT_CRL_DOWNLOAD, '-',
821	"Download CRLs from distribution points in certificate CDP entries"},
822	{"chainCAfile", OPT_CHAINCAFILE, '<',
823	"CA file for certificate chain (PEM format)"},
824	{"chainCApath", OPT_CHAINCAPATH, '/',
825	"use dir as certificate store path to build CA certificate chain"},
826	{"chainCAstore", OPT_CHAINCASTORE, ':',
827	"use URI as certificate store to build CA certificate chain"},
828	{"verifyCAfile", OPT_VERIFYCAFILE, '<',
829	"CA file for certificate verification (PEM format)"},
830	{"verifyCApath", OPT_VERIFYCAPATH, '/',
831	"use dir as certificate store path to verify CA certificate"},
832	{"verifyCAstore", OPT_VERIFYCASTORE, ':',
833	"use URI as certificate store to verify CA certificate"},
834	{"no_cache", OPT_NO_CACHE, '-', "Disable session cache"},
835	{"ext_cache", OPT_EXT_CACHE, '-',
836	"Disable internal cache, set up and use external cache"},
837	{"verify_return_error", OPT_VERIFY_RET_ERROR, '-',
838	"Close connection on verification error"},
839	{"verify_quiet", OPT_VERIFY_QUIET, '-',
840	"No verify output except verify errors"},
841	{"ign_eof", OPT_IGN_EOF, '-', "Ignore input EOF (default when -quiet)"},
842	{"no_ign_eof", OPT_NO_IGN_EOF, '-', "Do not ignore input EOF"},
843
844	#ifndef OPENSSL_NO_OCSP
845	OPT_SECTION("OCSP"),
846	{"status", OPT_STATUS, '-', "Request certificate status from server"},
847	{"status_verbose", OPT_STATUS_VERBOSE, '-',
848	"Print more output in certificate status callback"},
849	{"status_timeout", OPT_STATUS_TIMEOUT, 'n',
850	"Status request responder timeout"},
851	{"status_url", OPT_STATUS_URL, 's', "Status request fallback URL"},
852	{"proxy", OPT_PROXY, 's',
853	"[http[s]://]host[:port][/path] of HTTP(S) proxy to use; path is ignored"},
854	{"no_proxy", OPT_NO_PROXY, 's',
855	"List of addresses of servers not to use HTTP(S) proxy for"},
856	{OPT_MORE_STR, 0, 0,
857	"Default from environment variable 'no_proxy', else 'NO_PROXY', else none"},
858	{"status_file", OPT_STATUS_FILE, '<',
859	"File containing DER encoded OCSP Response"},
860	#endif
861
862	OPT_SECTION("Debug"),
863	{"security_debug", OPT_SECURITY_DEBUG, '-',
864	"Print output from SSL/TLS security framework"},
865	{"security_debug_verbose", OPT_SECURITY_DEBUG_VERBOSE, '-',
866	"Print more output from SSL/TLS security framework"},
867	{"brief", OPT_BRIEF, '-',
868	"Restrict output to brief summary of connection parameters"},
869	{"rev", OPT_REV, '-',
870	"act as an echo server that sends back received text reversed"},
871	{"debug", OPT_DEBUG, '-', "Print more output"},
872	{"msg", OPT_MSG, '-', "Show protocol messages"},
873	{"msgfile", OPT_MSGFILE, '>',
874	"File to send output of -msg or -trace, instead of stdout"},
875	{"state", OPT_STATE, '-', "Print the SSL states"},
876	{"async", OPT_ASYNC, '-', "Operate in asynchronous mode"},
877	{"max_pipelines", OPT_MAX_PIPELINES, 'p',
878	"Maximum number of encrypt/decrypt pipelines to be used"},
879	{"naccept", OPT_NACCEPT, 'p', "Terminate after #num connections"},
880	{"keylogfile", OPT_KEYLOG_FILE, '>', "Write TLS secrets to file"},
881
882	OPT_SECTION("Network"),
883	{"nbio", OPT_NBIO, '-', "Use non-blocking IO"},
884	{"timeout", OPT_TIMEOUT, '-', "Enable timeouts"},
885	{"mtu", OPT_MTU, 'p', "Set link-layer MTU"},
886	{"read_buf", OPT_READ_BUF, 'p',
887	"Default read buffer size to be used for connections"},
888	{"split_send_frag", OPT_SPLIT_SEND_FRAG, 'p',
889	"Size used to split data for encrypt pipelines"},
890	{"max_send_frag", OPT_MAX_SEND_FRAG, 'p', "Maximum Size of send frames "},
891
892	OPT_SECTION("Server identity"),
893	{"psk_identity", OPT_PSK_IDENTITY, 's', "PSK identity to expect"},
894	#ifndef OPENSSL_NO_PSK
895	{"psk_hint", OPT_PSK_HINT, 's', "PSK identity hint to use"},
896	#endif
897	{"psk", OPT_PSK, 's', "PSK in hex (without 0x)"},
898	{"psk_session", OPT_PSK_SESS, '<', "File to read PSK SSL session from"},
899	#ifndef OPENSSL_NO_SRP
900	{"srpvfile", OPT_SRPVFILE, '<', "(deprecated) The verifier file for SRP"},
901	{"srpuserseed", OPT_SRPUSERSEED, 's',
902	"(deprecated) A seed string for a default user salt"},
903	#endif
904
905	OPT_SECTION("Protocol and version"),
906	{"max_early_data", OPT_MAX_EARLY, 'n',
907	"The maximum number of bytes of early data as advertised in tickets"},
908	{"recv_max_early_data", OPT_RECV_MAX_EARLY, 'n',
909	"The maximum number of bytes of early data (hard limit)"},
910	{"early_data", OPT_EARLY_DATA, '-', "Attempt to read early data"},
911	{"num_tickets", OPT_S_NUM_TICKETS, 'n',
912	"The number of TLSv1.3 session tickets that a server will automatically issue" },
913	{"anti_replay", OPT_ANTI_REPLAY, '-', "Switch on anti-replay protection (default)"},
914	{"no_anti_replay", OPT_NO_ANTI_REPLAY, '-', "Switch off anti-replay protection"},
915	{"http_server_binmode", OPT_HTTP_SERVER_BINMODE, '-', "opening files in binary mode when acting as http server (-WWW and -HTTP)"},
916	{"no_ca_names", OPT_NOCANAMES, '-',
917	"Disable TLS Extension CA Names"},
918	{"stateless", OPT_STATELESS, '-', "Require TLSv1.3 cookies"},
919	#ifndef OPENSSL_NO_SSL3
920	{"ssl3", OPT_SSL3, '-', "Just talk SSLv3"},
921	#endif
922	#ifndef OPENSSL_NO_TLS1
923	{"tls1", OPT_TLS1, '-', "Just talk TLSv1"},
924	#endif
925	#ifndef OPENSSL_NO_TLS1_1
926	{"tls1_1", OPT_TLS1_1, '-', "Just talk TLSv1.1"},
927	#endif
928	#ifndef OPENSSL_NO_TLS1_2
929	{"tls1_2", OPT_TLS1_2, '-', "just talk TLSv1.2"},
930	#endif
931	#ifndef OPENSSL_NO_TLS1_3
932	{"tls1_3", OPT_TLS1_3, '-', "just talk TLSv1.3"},
933	#endif
934	#ifndef OPENSSL_NO_DTLS
935	{"dtls", OPT_DTLS, '-', "Use any DTLS version"},
936	{"listen", OPT_LISTEN, '-',
937	"Listen for a DTLS ClientHello with a cookie and then connect"},
938	#endif
939	#ifndef OPENSSL_NO_DTLS1
940	{"dtls1", OPT_DTLS1, '-', "Just talk DTLSv1"},
941	#endif
942	#ifndef OPENSSL_NO_DTLS1_2
943	{"dtls1_2", OPT_DTLS1_2, '-', "Just talk DTLSv1.2"},
944	#endif
945	#ifndef OPENSSL_NO_SCTP
946	{"sctp", OPT_SCTP, '-', "Use SCTP"},
947	{"sctp_label_bug", OPT_SCTP_LABEL_BUG, '-', "Enable SCTP label length bug"},
948	#endif
949	#ifndef OPENSSL_NO_SRTP
950	{"use_srtp", OPT_SRTP_PROFILES, 's',
951	"Offer SRTP key management with a colon-separated profile list"},
952	#endif
953	{"no_dhe", OPT_NO_DHE, '-', "Disable ephemeral DH"},
954	#ifndef OPENSSL_NO_NEXTPROTONEG
955	{"nextprotoneg", OPT_NEXTPROTONEG, 's',
956	"Set the advertised protocols for the NPN extension (comma-separated list)"},
957	#endif
958	{"alpn", OPT_ALPN, 's',
959	"Set the advertised protocols for the ALPN extension (comma-separated list)"},
960	#ifndef OPENSSL_NO_KTLS
961	{"sendfile", OPT_SENDFILE, '-', "Use sendfile to response file with -WWW"},
962	#endif
963
964	OPT_R_OPTIONS,
965	OPT_S_OPTIONS,
966	OPT_V_OPTIONS,
967	OPT_X_OPTIONS,
968	OPT_PROV_OPTIONS,
969	{NULL}
970	};
971
972	#define IS_PROT_FLAG(o) \
973	(o == OPT_SSL3 \|\| o == OPT_TLS1 \|\| o == OPT_TLS1_1 \|\| o == OPT_TLS1_2 \
974	\|\| o == OPT_TLS1_3 \|\| o == OPT_DTLS \|\| o == OPT_DTLS1 \|\| o == OPT_DTLS1_2)
975
976	int s_server_main(int argc, char *argv[])
977	{
978	ENGINE *engine = NULL;
979	EVP_PKEY s_key = NULL, s_dkey = NULL;
980	SSL_CONF_CTX *cctx = NULL;
981	const SSL_METHOD *meth = TLS_server_method();
982	SSL_EXCERT *exc = NULL;
983	STACK_OF(OPENSSL_STRING) *ssl_args = NULL;
984	STACK_OF(X509) s_chain = NULL, s_dchain = NULL;
985	STACK_OF(X509_CRL) *crls = NULL;
986	X509 s_cert = NULL, s_dcert = NULL;
987	X509_VERIFY_PARAM *vpm = NULL;
988	const char CApath = NULL, CAfile = NULL, *CAstore = NULL;
989	const char chCApath = NULL, chCAfile = NULL, *chCAstore = NULL;
990	char dpassarg = NULL, dpass = NULL;
991	char passarg = NULL, pass = NULL;
992	char vfyCApath = NULL, vfyCAfile = NULL, *vfyCAstore = NULL;
993	char crl_file = NULL, prog;
994	#ifdef AF_UNIX
995	int unlink_unix_path = 0;
996	#endif
997	do_server_cb server_cb;
998	int vpmtouched = 0, build_chain = 0, no_cache = 0, ext_cache = 0;
999	char *dhfile = NULL;
1000	int no_dhe = 0;
1001	int nocert = 0, ret = 1;
1002	int noCApath = 0, noCAfile = 0, noCAstore = 0;
1003	int s_cert_format = FORMAT_UNDEF, s_key_format = FORMAT_UNDEF;
1004	int s_dcert_format = FORMAT_UNDEF, s_dkey_format = FORMAT_UNDEF;
1005	int rev = 0, naccept = -1, sdebug = 0;
1006	int socket_family = AF_UNSPEC, socket_type = SOCK_STREAM, protocol = 0;
1007	int state = 0, crl_format = FORMAT_UNDEF, crl_download = 0;
1008	char *host = NULL;
1009	char *port = NULL;
1010	unsigned char *context = NULL;
1011	OPTION_CHOICE o;
1012	EVP_PKEY *s_key2 = NULL;
1013	X509 *s_cert2 = NULL;
1014	tlsextctx tlsextcbp = { NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING };
1015	const char *ssl_config = NULL;
1016	int read_buf_len = 0;
1017	#ifndef OPENSSL_NO_NEXTPROTONEG
1018	const char *next_proto_neg_in = NULL;
1019	tlsextnextprotoctx next_proto = { NULL, 0 };
1020	#endif
1021	const char *alpn_in = NULL;
1022	tlsextalpnctx alpn_ctx = { NULL, 0 };
1023	#ifndef OPENSSL_NO_PSK
1024	/* by default do not send a PSK identity hint */
1025	char *psk_identity_hint = NULL;
1026	#endif
1027	char *p;
1028	#ifndef OPENSSL_NO_SRP
1029	char *srpuserseed = NULL;
1030	char *srp_verifier_file = NULL;
1031	#endif
1032	#ifndef OPENSSL_NO_SRTP
1033	char *srtp_profiles = NULL;
1034	#endif
1035	int min_version = 0, max_version = 0, prot_opt = 0, no_prot_opt = 0;
1036	int s_server_verify = SSL_VERIFY_NONE;
1037	int s_server_session_id_context = 1; /* anything will do */
1038	const char s_cert_file = TEST_CERT, s_key_file = NULL, *s_chain_file = NULL;
1039	const char s_cert_file2 = TEST_CERT2, s_key_file2 = NULL;
1040	char s_dcert_file = NULL, s_dkey_file = NULL, *s_dchain_file = NULL;
1041	#ifndef OPENSSL_NO_OCSP
1042	int s_tlsextstatus = 0;
1043	#endif
1044	int no_resume_ephemeral = 0;
1045	unsigned int max_send_fragment = 0;
1046	unsigned int split_send_fragment = 0, max_pipelines = 0;
1047	const char *s_serverinfo_file = NULL;
1048	const char *keylog_file = NULL;
1049	int max_early_data = -1, recv_max_early_data = -1;
1050	char *psksessf = NULL;
1051	int no_ca_names = 0;
1052	#ifndef OPENSSL_NO_SCTP
1053	int sctp_label_bug = 0;
1054	#endif
1055	int ignore_unexpected_eof = 0;
1056
1057	/* Init of few remaining global variables */
1058	local_argc = argc;
1059	local_argv = argv;
1060
1061	ctx = ctx2 = NULL;
1062	s_nbio = s_nbio_test = 0;
1063	www = 0;
1064	bio_s_out = NULL;
1065	s_debug = 0;
1066	s_msg = 0;
1067	s_quiet = 0;
1068	s_brief = 0;
1069	async = 0;
1070	use_sendfile = 0;
1071
1072	port = OPENSSL_strdup(PORT);
1073	cctx = SSL_CONF_CTX_new();
1074	vpm = X509_VERIFY_PARAM_new();
1075	if (port == NULL \|\| cctx == NULL \|\| vpm == NULL)
1076	goto end;
1077	SSL_CONF_CTX_set_flags(cctx,
1078	SSL_CONF_FLAG_SERVER \| SSL_CONF_FLAG_CMDLINE);
1079
1080	prog = opt_init(argc, argv, s_server_options);
1081	while ((o = opt_next()) != OPT_EOF) {
1082	if (IS_PROT_FLAG(o) && ++prot_opt > 1) {
1083	BIO_printf(bio_err, "Cannot supply multiple protocol flags\n");
1084	goto end;
1085	}
1086	if (IS_NO_PROT_FLAG(o))
1087	no_prot_opt++;
1088	if (prot_opt == 1 && no_prot_opt) {
1089	BIO_printf(bio_err,
1090	"Cannot supply both a protocol flag and '-no_<prot>'\n");
1091	goto end;
1092	}
1093	switch (o) {
1094	case OPT_EOF:
1095	case OPT_ERR:
1096	opthelp:
1097	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
1098	goto end;
1099	case OPT_HELP:
1100	opt_help(s_server_options);
1101	ret = 0;
1102	goto end;
1103
1104	case OPT_4:
1105	#ifdef AF_UNIX
1106	if (socket_family == AF_UNIX) {
1107	OPENSSL_free(host); host = NULL;
1108	OPENSSL_free(port); port = NULL;
1109	}
1110	#endif
1111	socket_family = AF_INET;
1112	break;
1113	case OPT_6:
1114	if (1) {
1115	#ifdef AF_INET6
1116	#ifdef AF_UNIX
1117	if (socket_family == AF_UNIX) {
1118	OPENSSL_free(host); host = NULL;
1119	OPENSSL_free(port); port = NULL;
1120	}
1121	#endif
1122	socket_family = AF_INET6;
1123	} else {
1124	#endif
1125	BIO_printf(bio_err, "%s: IPv6 domain sockets unsupported\n", prog);
1126	goto end;
1127	}
1128	break;
1129	case OPT_PORT:
1130	#ifdef AF_UNIX
1131	if (socket_family == AF_UNIX) {
1132	socket_family = AF_UNSPEC;
1133	}
1134	#endif
1135	OPENSSL_free(port); port = NULL;
1136	OPENSSL_free(host); host = NULL;
1137	if (BIO_parse_hostserv(opt_arg(), NULL, &port, BIO_PARSE_PRIO_SERV) < 1) {
1138	BIO_printf(bio_err,
1139	"%s: -port argument malformed or ambiguous\n",
1140	port);
1141	goto end;
1142	}
1143	break;
1144	case OPT_ACCEPT:
1145	#ifdef AF_UNIX
1146	if (socket_family == AF_UNIX) {
1147	socket_family = AF_UNSPEC;
1148	}
1149	#endif
1150	OPENSSL_free(port); port = NULL;
1151	OPENSSL_free(host); host = NULL;
1152	if (BIO_parse_hostserv(opt_arg(), &host, &port, BIO_PARSE_PRIO_SERV) < 1) {
1153	BIO_printf(bio_err,
1154	"%s: -accept argument malformed or ambiguous\n",
1155	port);
1156	goto end;
1157	}
1158	break;
1159	#ifdef AF_UNIX
1160	case OPT_UNIX:
1161	socket_family = AF_UNIX;
1162	OPENSSL_free(host); host = OPENSSL_strdup(opt_arg());
1163	if (host == NULL)
1164	goto end;
1165	OPENSSL_free(port); port = NULL;
1166	break;
1167	case OPT_UNLINK:
1168	unlink_unix_path = 1;
1169	break;
1170	#endif
1171	case OPT_NACCEPT:
1172	naccept = atol(opt_arg());
1173	break;
1174	case OPT_VERIFY:
1175	s_server_verify = SSL_VERIFY_PEER \| SSL_VERIFY_CLIENT_ONCE;
1176	verify_args.depth = atoi(opt_arg());
1177	if (!s_quiet)
1178	BIO_printf(bio_err, "verify depth is %d\n", verify_args.depth);
1179	break;
1180	case OPT_UPPER_V_VERIFY:
1181	s_server_verify =
1182	SSL_VERIFY_PEER \| SSL_VERIFY_FAIL_IF_NO_PEER_CERT \|
1183	SSL_VERIFY_CLIENT_ONCE;
1184	verify_args.depth = atoi(opt_arg());
1185	if (!s_quiet)
1186	BIO_printf(bio_err,
1187	"verify depth is %d, must return a certificate\n",
1188	verify_args.depth);
1189	break;
1190	case OPT_CONTEXT:
1191	context = (unsigned char *)opt_arg();
1192	break;
1193	case OPT_CERT:
1194	s_cert_file = opt_arg();
1195	break;
1196	case OPT_NAMEOPT:
1197	if (!set_nameopt(opt_arg()))
1198	goto end;
1199	break;
1200	case OPT_CRL:
1201	crl_file = opt_arg();
1202	break;
1203	case OPT_CRL_DOWNLOAD:
1204	crl_download = 1;
1205	break;
1206	case OPT_SERVERINFO:
1207	s_serverinfo_file = opt_arg();
1208	break;
1209	case OPT_CERTFORM:
1210	if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_cert_format))
1211	goto opthelp;
1212	break;
1213	case OPT_KEY:
1214	s_key_file = opt_arg();
1215	break;
1216	case OPT_KEYFORM:
1217	if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_key_format))
1218	goto opthelp;
1219	break;
1220	case OPT_PASS:
1221	passarg = opt_arg();
1222	break;
1223	case OPT_CERT_CHAIN:
1224	s_chain_file = opt_arg();
1225	break;
1226	case OPT_DHPARAM:
1227	dhfile = opt_arg();
1228	break;
1229	case OPT_DCERTFORM:
1230	if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_dcert_format))
1231	goto opthelp;
1232	break;
1233	case OPT_DCERT:
1234	s_dcert_file = opt_arg();
1235	break;
1236	case OPT_DKEYFORM:
1237	if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_dkey_format))
1238	goto opthelp;
1239	break;
1240	case OPT_DPASS:
1241	dpassarg = opt_arg();
1242	break;
1243	case OPT_DKEY:
1244	s_dkey_file = opt_arg();
1245	break;
1246	case OPT_DCERT_CHAIN:
1247	s_dchain_file = opt_arg();
1248	break;
1249	case OPT_NOCERT:
1250	nocert = 1;
1251	break;
1252	case OPT_CAPATH:
1253	CApath = opt_arg();
1254	break;
1255	case OPT_NOCAPATH:
1256	noCApath = 1;
1257	break;
1258	case OPT_CHAINCAPATH:
1259	chCApath = opt_arg();
1260	break;
1261	case OPT_VERIFYCAPATH:
1262	vfyCApath = opt_arg();
1263	break;
1264	case OPT_CASTORE:
1265	CAstore = opt_arg();
1266	break;
1267	case OPT_NOCASTORE:
1268	noCAstore = 1;
1269	break;
1270	case OPT_CHAINCASTORE:
1271	chCAstore = opt_arg();
1272	break;
1273	case OPT_VERIFYCASTORE:
1274	vfyCAstore = opt_arg();
1275	break;
1276	case OPT_NO_CACHE:
1277	no_cache = 1;
1278	break;
1279	case OPT_EXT_CACHE:
1280	ext_cache = 1;
1281	break;
1282	case OPT_CRLFORM:
1283	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &crl_format))
1284	goto opthelp;
1285	break;
1286	case OPT_S_CASES:
1287	case OPT_S_NUM_TICKETS:
1288	case OPT_ANTI_REPLAY:
1289	case OPT_NO_ANTI_REPLAY:
1290	if (ssl_args == NULL)
1291	ssl_args = sk_OPENSSL_STRING_new_null();
1292	if (ssl_args == NULL
1293	\|\| !sk_OPENSSL_STRING_push(ssl_args, opt_flag())
1294	\|\| !sk_OPENSSL_STRING_push(ssl_args, opt_arg())) {
1295	BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
1296	goto end;
1297	}
1298	break;
1299	case OPT_V_CASES:
1300	if (!opt_verify(o, vpm))
1301	goto end;
1302	vpmtouched++;
1303	break;
1304	case OPT_X_CASES:
1305	if (!args_excert(o, &exc))
1306	goto end;
1307	break;
1308	case OPT_VERIFY_RET_ERROR:
1309	verify_args.return_error = 1;
1310	break;
1311	case OPT_VERIFY_QUIET:
1312	verify_args.quiet = 1;
1313	break;
1314	case OPT_BUILD_CHAIN:
1315	build_chain = 1;
1316	break;
1317	case OPT_CAFILE:
1318	CAfile = opt_arg();
1319	break;
1320	case OPT_NOCAFILE:
1321	noCAfile = 1;
1322	break;
1323	case OPT_CHAINCAFILE:
1324	chCAfile = opt_arg();
1325	break;
1326	case OPT_VERIFYCAFILE:
1327	vfyCAfile = opt_arg();
1328	break;
1329	case OPT_NBIO:
1330	s_nbio = 1;
1331	break;
1332	case OPT_NBIO_TEST:
1333	s_nbio = s_nbio_test = 1;
1334	break;
1335	case OPT_IGN_EOF:
1336	s_ign_eof = 1;
1337	break;
1338	case OPT_NO_IGN_EOF:
1339	s_ign_eof = 0;
1340	break;
1341	case OPT_DEBUG:
1342	s_debug = 1;
1343	break;
1344	case OPT_TLSEXTDEBUG:
1345	s_tlsextdebug = 1;
1346	break;
1347	case OPT_STATUS:
1348	#ifndef OPENSSL_NO_OCSP
1349	s_tlsextstatus = 1;
1350	#endif
1351	break;
1352	case OPT_STATUS_VERBOSE:
1353	#ifndef OPENSSL_NO_OCSP
1354	s_tlsextstatus = tlscstatp.verbose = 1;
1355	#endif
1356	break;
1357	case OPT_STATUS_TIMEOUT:
1358	#ifndef OPENSSL_NO_OCSP
1359	s_tlsextstatus = 1;
1360	tlscstatp.timeout = atoi(opt_arg());
1361	#endif
1362	break;
1363	case OPT_PROXY:
1364	#ifndef OPENSSL_NO_OCSP
1365	tlscstatp.proxy = opt_arg();
1366	#endif
1367	break;
1368	case OPT_NO_PROXY:
1369	#ifndef OPENSSL_NO_OCSP
1370	tlscstatp.no_proxy = opt_arg();
1371	#endif
1372	break;
1373	case OPT_STATUS_URL:
1374	#ifndef OPENSSL_NO_OCSP
1375	s_tlsextstatus = 1;
1376	if (!OSSL_HTTP_parse_url(opt_arg(), &tlscstatp.use_ssl, NULL,
1377	&tlscstatp.host, &tlscstatp.port, NULL,
1378	&tlscstatp.path, NULL, NULL)) {
1379	BIO_printf(bio_err, "Error parsing -status_url argument\n");
1380	goto end;
1381	}
1382	#endif
1383	break;
1384	case OPT_STATUS_FILE:
1385	#ifndef OPENSSL_NO_OCSP
1386	s_tlsextstatus = 1;
1387	tlscstatp.respin = opt_arg();
1388	#endif
1389	break;
1390	case OPT_MSG:
1391	s_msg = 1;
1392	break;
1393	case OPT_MSGFILE:
1394	bio_s_msg = BIO_new_file(opt_arg(), "w");
1395	if (bio_s_msg == NULL) {
1396	BIO_printf(bio_err, "Error writing file %s\n", opt_arg());
1397	goto end;
1398	}
1399	break;
1400	case OPT_TRACE:
1401	#ifndef OPENSSL_NO_SSL_TRACE
1402	s_msg = 2;
1403	#endif
1404	break;
1405	case OPT_SECURITY_DEBUG:
1406	sdebug = 1;
1407	break;
1408	case OPT_SECURITY_DEBUG_VERBOSE:
1409	sdebug = 2;
1410	break;
1411	case OPT_STATE:
1412	state = 1;
1413	break;
1414	case OPT_CRLF:
1415	s_crlf = 1;
1416	break;
1417	case OPT_QUIET:
1418	s_quiet = 1;
1419	break;
1420	case OPT_BRIEF:
1421	s_quiet = s_brief = verify_args.quiet = 1;
1422	break;
1423	case OPT_NO_DHE:
1424	no_dhe = 1;
1425	break;
1426	case OPT_NO_RESUME_EPHEMERAL:
1427	no_resume_ephemeral = 1;
1428	break;
1429	case OPT_PSK_IDENTITY:
1430	psk_identity = opt_arg();
1431	break;
1432	case OPT_PSK_HINT:
1433	#ifndef OPENSSL_NO_PSK
1434	psk_identity_hint = opt_arg();
1435	#endif
1436	break;
1437	case OPT_PSK:
1438	for (p = psk_key = opt_arg(); *p; p++) {
1439	if (isxdigit(_UC(*p)))
1440	continue;
1441	BIO_printf(bio_err, "Not a hex number '%s'\n", psk_key);
1442	goto end;
1443	}
1444	break;
1445	case OPT_PSK_SESS:
1446	psksessf = opt_arg();
1447	break;
1448	case OPT_SRPVFILE:
1449	#ifndef OPENSSL_NO_SRP
1450	srp_verifier_file = opt_arg();
1451	if (min_version < TLS1_VERSION)
1452	min_version = TLS1_VERSION;
1453	#endif
1454	break;
1455	case OPT_SRPUSERSEED:
1456	#ifndef OPENSSL_NO_SRP
1457	srpuserseed = opt_arg();
1458	if (min_version < TLS1_VERSION)
1459	min_version = TLS1_VERSION;
1460	#endif
1461	break;
1462	case OPT_REV:
1463	rev = 1;
1464	break;
1465	case OPT_WWW:
1466	www = 1;
1467	break;
1468	case OPT_UPPER_WWW:
1469	www = 2;
1470	break;
1471	case OPT_HTTP:
1472	www = 3;
1473	break;
1474	case OPT_SSL_CONFIG:
1475	ssl_config = opt_arg();
1476	break;
1477	case OPT_SSL3:
1478	min_version = SSL3_VERSION;
1479	max_version = SSL3_VERSION;
1480	break;
1481	case OPT_TLS1_3:
1482	min_version = TLS1_3_VERSION;
1483	max_version = TLS1_3_VERSION;
1484	break;
1485	case OPT_TLS1_2:
1486	min_version = TLS1_2_VERSION;
1487	max_version = TLS1_2_VERSION;
1488	break;
1489	case OPT_TLS1_1:
1490	min_version = TLS1_1_VERSION;
1491	max_version = TLS1_1_VERSION;
1492	break;
1493	case OPT_TLS1:
1494	min_version = TLS1_VERSION;
1495	max_version = TLS1_VERSION;
1496	break;
1497	case OPT_DTLS:
1498	#ifndef OPENSSL_NO_DTLS
1499	meth = DTLS_server_method();
1500	socket_type = SOCK_DGRAM;
1501	#endif
1502	break;
1503	case OPT_DTLS1:
1504	#ifndef OPENSSL_NO_DTLS
1505	meth = DTLS_server_method();
1506	min_version = DTLS1_VERSION;
1507	max_version = DTLS1_VERSION;
1508	socket_type = SOCK_DGRAM;
1509	#endif
1510	break;
1511	case OPT_DTLS1_2:
1512	#ifndef OPENSSL_NO_DTLS
1513	meth = DTLS_server_method();
1514	min_version = DTLS1_2_VERSION;
1515	max_version = DTLS1_2_VERSION;
1516	socket_type = SOCK_DGRAM;
1517	#endif
1518	break;
1519	case OPT_SCTP:
1520	#ifndef OPENSSL_NO_SCTP
1521	protocol = IPPROTO_SCTP;
1522	#endif
1523	break;
1524	case OPT_SCTP_LABEL_BUG:
1525	#ifndef OPENSSL_NO_SCTP
1526	sctp_label_bug = 1;
1527	#endif
1528	break;
1529	case OPT_TIMEOUT:
1530	#ifndef OPENSSL_NO_DTLS
1531	enable_timeouts = 1;
1532	#endif
1533	break;
1534	case OPT_MTU:
1535	#ifndef OPENSSL_NO_DTLS
1536	socket_mtu = atol(opt_arg());
1537	#endif
1538	break;
1539	case OPT_LISTEN:
1540	#ifndef OPENSSL_NO_DTLS
1541	dtlslisten = 1;
1542	#endif
1543	break;
1544	case OPT_STATELESS:
1545	stateless = 1;
1546	break;
1547	case OPT_ID_PREFIX:
1548	session_id_prefix = opt_arg();
1549	break;
1550	case OPT_ENGINE:
1551	#ifndef OPENSSL_NO_ENGINE
1552	engine = setup_engine(opt_arg(), s_debug);
1553	#endif
1554	break;
1555	case OPT_R_CASES:
1556	if (!opt_rand(o))
1557	goto end;
1558	break;
1559	case OPT_PROV_CASES:
1560	if (!opt_provider(o))
1561	goto end;
1562	break;
1563	case OPT_SERVERNAME:
1564	tlsextcbp.servername = opt_arg();
1565	break;
1566	case OPT_SERVERNAME_FATAL:
1567	tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL;
1568	break;
1569	case OPT_CERT2:
1570	s_cert_file2 = opt_arg();
1571	break;
1572	case OPT_KEY2:
1573	s_key_file2 = opt_arg();
1574	break;
1575	case OPT_NEXTPROTONEG:
1576	# ifndef OPENSSL_NO_NEXTPROTONEG
1577	next_proto_neg_in = opt_arg();
1578	#endif
1579	break;
1580	case OPT_ALPN:
1581	alpn_in = opt_arg();
1582	break;
1583	case OPT_SRTP_PROFILES:
1584	#ifndef OPENSSL_NO_SRTP
1585	srtp_profiles = opt_arg();
1586	#endif
1587	break;
1588	case OPT_KEYMATEXPORT:
1589	keymatexportlabel = opt_arg();
1590	break;
1591	case OPT_KEYMATEXPORTLEN:
1592	keymatexportlen = atoi(opt_arg());
1593	break;
1594	case OPT_ASYNC:
1595	async = 1;
1596	break;
1597	case OPT_MAX_SEND_FRAG:
1598	max_send_fragment = atoi(opt_arg());
1599	break;
1600	case OPT_SPLIT_SEND_FRAG:
1601	split_send_fragment = atoi(opt_arg());
1602	break;
1603	case OPT_MAX_PIPELINES:
1604	max_pipelines = atoi(opt_arg());
1605	break;
1606	case OPT_READ_BUF:
1607	read_buf_len = atoi(opt_arg());
1608	break;
1609	case OPT_KEYLOG_FILE:
1610	keylog_file = opt_arg();
1611	break;
1612	case OPT_MAX_EARLY:
1613	max_early_data = atoi(opt_arg());
1614	if (max_early_data < 0) {
1615	BIO_printf(bio_err, "Invalid value for max_early_data\n");
1616	goto end;
1617	}
1618	break;
1619	case OPT_RECV_MAX_EARLY:
1620	recv_max_early_data = atoi(opt_arg());
1621	if (recv_max_early_data < 0) {
1622	BIO_printf(bio_err, "Invalid value for recv_max_early_data\n");
1623	goto end;
1624	}
1625	break;
1626	case OPT_EARLY_DATA:
1627	early_data = 1;
1628	if (max_early_data == -1)
1629	max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
1630	break;
1631	case OPT_HTTP_SERVER_BINMODE:
1632	http_server_binmode = 1;
1633	break;
1634	case OPT_NOCANAMES:
1635	no_ca_names = 1;
1636	break;
1637	case OPT_SENDFILE:
1638	#ifndef OPENSSL_NO_KTLS
1639	use_sendfile = 1;
1640	#endif
1641	break;
1642	case OPT_IGNORE_UNEXPECTED_EOF:
1643	ignore_unexpected_eof = 1;
1644	break;
1645	}
1646	}
1647
1648	/* No extra arguments. */
1649	argc = opt_num_rest();
1650	if (argc != 0)
1651	goto opthelp;
1652
1653	if (!app_RAND_load())
1654	goto end;
1655
1656	#ifndef OPENSSL_NO_NEXTPROTONEG
1657	if (min_version == TLS1_3_VERSION && next_proto_neg_in != NULL) {
1658	BIO_printf(bio_err, "Cannot supply -nextprotoneg with TLSv1.3\n");
1659	goto opthelp;
1660	}
1661	#endif
1662	#ifndef OPENSSL_NO_DTLS
1663	if (www && socket_type == SOCK_DGRAM) {
1664	BIO_printf(bio_err, "Can't use -HTTP, -www or -WWW with DTLS\n");
1665	goto end;
1666	}
1667
1668	if (dtlslisten && socket_type != SOCK_DGRAM) {
1669	BIO_printf(bio_err, "Can only use -listen with DTLS\n");
1670	goto end;
1671	}
1672	#endif
1673
1674	if (stateless && socket_type != SOCK_STREAM) {
1675	BIO_printf(bio_err, "Can only use --stateless with TLS\n");
1676	goto end;
1677	}
1678
1679	#ifdef AF_UNIX
1680	if (socket_family == AF_UNIX && socket_type != SOCK_STREAM) {
1681	BIO_printf(bio_err,
1682	"Can't use unix sockets and datagrams together\n");
1683	goto end;
1684	}
1685	#endif
1686	if (early_data && (www > 0 \|\| rev)) {
1687	BIO_printf(bio_err,
1688	"Can't use -early_data in combination with -www, -WWW, -HTTP, or -rev\n");
1689	goto end;
1690	}
1691
1692	#ifndef OPENSSL_NO_SCTP
1693	if (protocol == IPPROTO_SCTP) {
1694	if (socket_type != SOCK_DGRAM) {
1695	BIO_printf(bio_err, "Can't use -sctp without DTLS\n");
1696	goto end;
1697	}
1698	/* SCTP is unusual. It uses DTLS over a SOCK_STREAM protocol */
1699	socket_type = SOCK_STREAM;
1700	}
1701	#endif
1702
1703	#ifndef OPENSSL_NO_KTLS
1704	if (use_sendfile && www <= 1) {
1705	BIO_printf(bio_err, "Can't use -sendfile without -WWW or -HTTP\n");
1706	goto end;
1707	}
1708	#endif
1709
1710	if (!app_passwd(passarg, dpassarg, &pass, &dpass)) {
1711	BIO_printf(bio_err, "Error getting password\n");
1712	goto end;
1713	}
1714
1715	if (s_key_file == NULL)
1716	s_key_file = s_cert_file;
1717
1718	if (s_key_file2 == NULL)
1719	s_key_file2 = s_cert_file2;
1720
1721	if (!load_excert(&exc))
1722	goto end;
1723
1724	if (nocert == 0) {
1725	s_key = load_key(s_key_file, s_key_format, 0, pass, engine,
1726	"server certificate private key");
1727	if (s_key == NULL)
1728	goto end;
1729
1730	s_cert = load_cert_pass(s_cert_file, s_cert_format, 1, pass,
1731	"server certificate");
1732
1733	if (s_cert == NULL)
1734	goto end;
1735	if (s_chain_file != NULL) {
1736	if (!load_certs(s_chain_file, 0, &s_chain, NULL,
1737	"server certificate chain"))
1738	goto end;
1739	}
1740
1741	if (tlsextcbp.servername != NULL) {
1742	s_key2 = load_key(s_key_file2, s_key_format, 0, pass, engine,
1743	"second server certificate private key");
1744	if (s_key2 == NULL)
1745	goto end;
1746
1747	s_cert2 = load_cert_pass(s_cert_file2, s_cert_format, 1, pass,
1748	"second server certificate");
1749
1750	if (s_cert2 == NULL)
1751	goto end;
1752	}
1753	}
1754	#if !defined(OPENSSL_NO_NEXTPROTONEG)
1755	if (next_proto_neg_in) {
1756	next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1757	if (next_proto.data == NULL)
1758	goto end;
1759	}
1760	#endif
1761	alpn_ctx.data = NULL;
1762	if (alpn_in) {
1763	alpn_ctx.data = next_protos_parse(&alpn_ctx.len, alpn_in);
1764	if (alpn_ctx.data == NULL)
1765	goto end;
1766	}
1767
1768	if (crl_file != NULL) {
1769	X509_CRL *crl;
1770	crl = load_crl(crl_file, crl_format, 0, "CRL");
1771	if (crl == NULL)
1772	goto end;
1773	crls = sk_X509_CRL_new_null();
1774	if (crls == NULL \|\| !sk_X509_CRL_push(crls, crl)) {
1775	BIO_puts(bio_err, "Error adding CRL\n");
1776	ERR_print_errors(bio_err);
1777	X509_CRL_free(crl);
1778	goto end;
1779	}
1780	}
1781
1782	if (s_dcert_file != NULL) {
1783
1784	if (s_dkey_file == NULL)
1785	s_dkey_file = s_dcert_file;
1786
1787	s_dkey = load_key(s_dkey_file, s_dkey_format,
1788	0, dpass, engine, "second certificate private key");
1789	if (s_dkey == NULL)
1790	goto end;
1791
1792	s_dcert = load_cert_pass(s_dcert_file, s_dcert_format, 1, dpass,
1793	"second server certificate");
1794
1795	if (s_dcert == NULL) {
1796	ERR_print_errors(bio_err);
1797	goto end;
1798	}
1799	if (s_dchain_file != NULL) {
1800	if (!load_certs(s_dchain_file, 0, &s_dchain, NULL,
1801	"second server certificate chain"))
1802	goto end;
1803	}
1804
1805	}
1806
1807	if (bio_s_out == NULL) {
1808	if (s_quiet && !s_debug) {
1809	bio_s_out = BIO_new(BIO_s_null());
1810	if (s_msg && bio_s_msg == NULL) {
1811	bio_s_msg = dup_bio_out(FORMAT_TEXT);
1812	if (bio_s_msg == NULL) {
1813	BIO_printf(bio_err, "Out of memory\n");
1814	goto end;
1815	}
1816	}
1817	} else {
1818	bio_s_out = dup_bio_out(FORMAT_TEXT);
1819	}
1820	}
1821
1822	if (bio_s_out == NULL)
1823	goto end;
1824
1825	if (nocert) {
1826	s_cert_file = NULL;
1827	s_key_file = NULL;
1828	s_dcert_file = NULL;
1829	s_dkey_file = NULL;
1830	s_cert_file2 = NULL;
1831	s_key_file2 = NULL;
1832	}
1833
1834	ctx = SSL_CTX_new_ex(app_get0_libctx(), app_get0_propq(), meth);
1835	if (ctx == NULL) {
1836	ERR_print_errors(bio_err);
1837	goto end;
1838	}
1839
1840	SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY);
1841
1842	if (sdebug)
1843	ssl_ctx_security_debug(ctx, sdebug);
1844
1845	if (!config_ctx(cctx, ssl_args, ctx))
1846	goto end;
1847
1848	if (ssl_config) {
1849	if (SSL_CTX_config(ctx, ssl_config) == 0) {
1850	BIO_printf(bio_err, "Error using configuration \"%s\"\n",
1851	ssl_config);
1852	ERR_print_errors(bio_err);
1853	goto end;
1854	}
1855	}
1856	#ifndef OPENSSL_NO_SCTP
1857	if (protocol == IPPROTO_SCTP && sctp_label_bug == 1)
1858	SSL_CTX_set_mode(ctx, SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG);
1859	#endif
1860
1861	if (min_version != 0
1862	&& SSL_CTX_set_min_proto_version(ctx, min_version) == 0)
1863	goto end;
1864	if (max_version != 0
1865	&& SSL_CTX_set_max_proto_version(ctx, max_version) == 0)
1866	goto end;
1867
1868	if (session_id_prefix) {
1869	if (strlen(session_id_prefix) >= 32)
1870	BIO_printf(bio_err,
1871	"warning: id_prefix is too long, only one new session will be possible\n");
1872	if (!SSL_CTX_set_generate_session_id(ctx, generate_session_id)) {
1873	BIO_printf(bio_err, "error setting 'id_prefix'\n");
1874	ERR_print_errors(bio_err);
1875	goto end;
1876	}
1877	BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
1878	}
1879	if (exc != NULL)
1880	ssl_ctx_set_excert(ctx, exc);
1881
1882	if (state)
1883	SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
1884	if (no_cache)
1885	SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
1886	else if (ext_cache)
1887	init_session_cache_ctx(ctx);
1888	else
1889	SSL_CTX_sess_set_cache_size(ctx, 128);
1890
1891	if (async) {
1892	SSL_CTX_set_mode(ctx, SSL_MODE_ASYNC);
1893	}
1894
1895	if (no_ca_names) {
1896	SSL_CTX_set_options(ctx, SSL_OP_DISABLE_TLSEXT_CA_NAMES);
1897	}
1898
1899	if (ignore_unexpected_eof)
1900	SSL_CTX_set_options(ctx, SSL_OP_IGNORE_UNEXPECTED_EOF);
1901
1902	if (max_send_fragment > 0
1903	&& !SSL_CTX_set_max_send_fragment(ctx, max_send_fragment)) {
1904	BIO_printf(bio_err, "%s: Max send fragment size %u is out of permitted range\n",
1905	prog, max_send_fragment);
1906	goto end;
1907	}
1908
1909	if (split_send_fragment > 0
1910	&& !SSL_CTX_set_split_send_fragment(ctx, split_send_fragment)) {
1911	BIO_printf(bio_err, "%s: Split send fragment size %u is out of permitted range\n",
1912	prog, split_send_fragment);
1913	goto end;
1914	}
1915	if (max_pipelines > 0
1916	&& !SSL_CTX_set_max_pipelines(ctx, max_pipelines)) {
1917	BIO_printf(bio_err, "%s: Max pipelines %u is out of permitted range\n",
1918	prog, max_pipelines);
1919	goto end;
1920	}
1921
1922	if (read_buf_len > 0) {
1923	SSL_CTX_set_default_read_buffer_len(ctx, read_buf_len);
1924	}
1925	#ifndef OPENSSL_NO_SRTP
1926	if (srtp_profiles != NULL) {
1927	/* Returns 0 on success! */
1928	if (SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles) != 0) {
1929	BIO_printf(bio_err, "Error setting SRTP profile\n");
1930	ERR_print_errors(bio_err);
1931	goto end;
1932	}
1933	}
1934	#endif
1935
1936	if (!ctx_set_verify_locations(ctx, CAfile, noCAfile, CApath, noCApath,
1937	CAstore, noCAstore)) {
1938	ERR_print_errors(bio_err);
1939	goto end;
1940	}
1941	if (vpmtouched && !SSL_CTX_set1_param(ctx, vpm)) {
1942	BIO_printf(bio_err, "Error setting verify params\n");
1943	ERR_print_errors(bio_err);
1944	goto end;
1945	}
1946
1947	ssl_ctx_add_crls(ctx, crls, 0);
1948
1949	if (!ssl_load_stores(ctx,
1950	vfyCApath, vfyCAfile, vfyCAstore,
1951	chCApath, chCAfile, chCAstore,
1952	crls, crl_download)) {
1953	BIO_printf(bio_err, "Error loading store locations\n");
1954	ERR_print_errors(bio_err);
1955	goto end;
1956	}
1957
1958	if (s_cert2) {
1959	ctx2 = SSL_CTX_new_ex(app_get0_libctx(), app_get0_propq(), meth);
1960	if (ctx2 == NULL) {
1961	ERR_print_errors(bio_err);
1962	goto end;
1963	}
1964	}
1965
1966	if (ctx2 != NULL) {
1967	BIO_printf(bio_s_out, "Setting secondary ctx parameters\n");
1968
1969	if (sdebug)
1970	ssl_ctx_security_debug(ctx2, sdebug);
1971
1972	if (session_id_prefix) {
1973	if (strlen(session_id_prefix) >= 32)
1974	BIO_printf(bio_err,
1975	"warning: id_prefix is too long, only one new session will be possible\n");
1976	if (!SSL_CTX_set_generate_session_id(ctx2, generate_session_id)) {
1977	BIO_printf(bio_err, "error setting 'id_prefix'\n");
1978	ERR_print_errors(bio_err);
1979	goto end;
1980	}
1981	BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
1982	}
1983	if (exc != NULL)
1984	ssl_ctx_set_excert(ctx2, exc);
1985
1986	if (state)
1987	SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback);
1988
1989	if (no_cache)
1990	SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF);
1991	else if (ext_cache)
1992	init_session_cache_ctx(ctx2);
1993	else
1994	SSL_CTX_sess_set_cache_size(ctx2, 128);
1995
1996	if (async)
1997	SSL_CTX_set_mode(ctx2, SSL_MODE_ASYNC);
1998
1999	if (!ctx_set_verify_locations(ctx2, CAfile, noCAfile, CApath,
2000	noCApath, CAstore, noCAstore)) {
2001	ERR_print_errors(bio_err);
2002	goto end;
2003	}
2004	if (vpmtouched && !SSL_CTX_set1_param(ctx2, vpm)) {
2005	BIO_printf(bio_err, "Error setting verify params\n");
2006	ERR_print_errors(bio_err);
2007	goto end;
2008	}
2009
2010	ssl_ctx_add_crls(ctx2, crls, 0);
2011	if (!config_ctx(cctx, ssl_args, ctx2))
2012	goto end;
2013	}
2014	#ifndef OPENSSL_NO_NEXTPROTONEG
2015	if (next_proto.data)
2016	SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb,
2017	&next_proto);
2018	#endif
2019	if (alpn_ctx.data)
2020	SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx);
2021
2022	if (!no_dhe) {
2023	EVP_PKEY *dhpkey = NULL;
2024
2025	if (dhfile != NULL)
2026	dhpkey = load_keyparams(dhfile, FORMAT_UNDEF, 0, "DH", "DH parameters");
2027	else if (s_cert_file != NULL)
2028	dhpkey = load_keyparams_suppress(s_cert_file, FORMAT_UNDEF, 0, "DH",
2029	"DH parameters", 1);
2030
2031	if (dhpkey != NULL) {
2032	BIO_printf(bio_s_out, "Setting temp DH parameters\n");
2033	} else {
2034	BIO_printf(bio_s_out, "Using default temp DH parameters\n");
2035	}
2036	(void)BIO_flush(bio_s_out);
2037
2038	if (dhpkey == NULL) {
2039	SSL_CTX_set_dh_auto(ctx, 1);
2040	} else {
2041	/*
2042	* We need 2 references: one for use by ctx and one for use by
2043	* ctx2
2044	*/
2045	if (!EVP_PKEY_up_ref(dhpkey)) {
2046	EVP_PKEY_free(dhpkey);
2047	goto end;
2048	}
2049	if (!SSL_CTX_set0_tmp_dh_pkey(ctx, dhpkey)) {
2050	BIO_puts(bio_err, "Error setting temp DH parameters\n");
2051	ERR_print_errors(bio_err);
2052	/* Free 2 references */
2053	EVP_PKEY_free(dhpkey);
2054	EVP_PKEY_free(dhpkey);
2055	goto end;
2056	}
2057	}
2058
2059	if (ctx2 != NULL) {
2060	if (dhfile != NULL) {
2061	EVP_PKEY *dhpkey2 = load_keyparams_suppress(s_cert_file2,
2062	FORMAT_UNDEF,
2063	0, "DH",
2064	"DH parameters", 1);
2065
2066	if (dhpkey2 != NULL) {
2067	BIO_printf(bio_s_out, "Setting temp DH parameters\n");
2068	(void)BIO_flush(bio_s_out);
2069
2070	EVP_PKEY_free(dhpkey);
2071	dhpkey = dhpkey2;
2072	}
2073	}
2074	if (dhpkey == NULL) {
2075	SSL_CTX_set_dh_auto(ctx2, 1);
2076	} else if (!SSL_CTX_set0_tmp_dh_pkey(ctx2, dhpkey)) {
2077	BIO_puts(bio_err, "Error setting temp DH parameters\n");
2078	ERR_print_errors(bio_err);
2079	EVP_PKEY_free(dhpkey);
2080	goto end;
2081	}
2082	dhpkey = NULL;
2083	}
2084	EVP_PKEY_free(dhpkey);
2085	}
2086
2087	if (!set_cert_key_stuff(ctx, s_cert, s_key, s_chain, build_chain))
2088	goto end;
2089
2090	if (s_serverinfo_file != NULL
2091	&& !SSL_CTX_use_serverinfo_file(ctx, s_serverinfo_file)) {
2092	ERR_print_errors(bio_err);
2093	goto end;
2094	}
2095
2096	if (ctx2 != NULL
2097	&& !set_cert_key_stuff(ctx2, s_cert2, s_key2, NULL, build_chain))
2098	goto end;
2099
2100	if (s_dcert != NULL) {
2101	if (!set_cert_key_stuff(ctx, s_dcert, s_dkey, s_dchain, build_chain))
2102	goto end;
2103	}
2104
2105	if (no_resume_ephemeral) {
2106	SSL_CTX_set_not_resumable_session_callback(ctx,
2107	not_resumable_sess_cb);
2108
2109	if (ctx2 != NULL)
2110	SSL_CTX_set_not_resumable_session_callback(ctx2,
2111	not_resumable_sess_cb);
2112	}
2113	#ifndef OPENSSL_NO_PSK
2114	if (psk_key != NULL) {
2115	if (s_debug)
2116	BIO_printf(bio_s_out, "PSK key given, setting server callback\n");
2117	SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
2118	}
2119
2120	if (psk_identity_hint != NULL) {
2121	if (min_version == TLS1_3_VERSION) {
2122	BIO_printf(bio_s_out, "PSK warning: there is NO identity hint in TLSv1.3\n");
2123	} else {
2124	if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint)) {
2125	BIO_printf(bio_err, "error setting PSK identity hint to context\n");
2126	ERR_print_errors(bio_err);
2127	goto end;
2128	}
2129	}
2130	}
2131	#endif
2132	if (psksessf != NULL) {
2133	BIO *stmp = BIO_new_file(psksessf, "r");
2134
2135	if (stmp == NULL) {
2136	BIO_printf(bio_err, "Can't open PSK session file %s\n", psksessf);
2137	ERR_print_errors(bio_err);
2138	goto end;
2139	}
2140	psksess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
2141	BIO_free(stmp);
2142	if (psksess == NULL) {
2143	BIO_printf(bio_err, "Can't read PSK session file %s\n", psksessf);
2144	ERR_print_errors(bio_err);
2145	goto end;
2146	}
2147
2148	}
2149
2150	if (psk_key != NULL \|\| psksess != NULL)
2151	SSL_CTX_set_psk_find_session_callback(ctx, psk_find_session_cb);
2152
2153	SSL_CTX_set_verify(ctx, s_server_verify, verify_callback);
2154	if (!SSL_CTX_set_session_id_context(ctx,
2155	(void *)&s_server_session_id_context,
2156	sizeof(s_server_session_id_context))) {
2157	BIO_printf(bio_err, "error setting session id context\n");
2158	ERR_print_errors(bio_err);
2159	goto end;
2160	}
2161
2162	/* Set DTLS cookie generation and verification callbacks */
2163	SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback);
2164	SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback);
2165
2166	/* Set TLS1.3 cookie generation and verification callbacks */
2167	SSL_CTX_set_stateless_cookie_generate_cb(ctx, generate_stateless_cookie_callback);
2168	SSL_CTX_set_stateless_cookie_verify_cb(ctx, verify_stateless_cookie_callback);
2169
2170	if (ctx2 != NULL) {
2171	SSL_CTX_set_verify(ctx2, s_server_verify, verify_callback);
2172	if (!SSL_CTX_set_session_id_context(ctx2,
2173	(void *)&s_server_session_id_context,
2174	sizeof(s_server_session_id_context))) {
2175	BIO_printf(bio_err, "error setting session id context\n");
2176	ERR_print_errors(bio_err);
2177	goto end;
2178	}
2179	tlsextcbp.biodebug = bio_s_out;
2180	SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
2181	SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
2182	SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
2183	SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
2184	}
2185
2186	#ifndef OPENSSL_NO_SRP
2187	if (srp_verifier_file != NULL) {
2188	if (!set_up_srp_verifier_file(ctx, &srp_callback_parm, srpuserseed,
2189	srp_verifier_file))
2190	goto end;
2191	} else
2192	#endif
2193	if (CAfile != NULL) {
2194	SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(CAfile));
2195
2196	if (ctx2)
2197	SSL_CTX_set_client_CA_list(ctx2, SSL_load_client_CA_file(CAfile));
2198	}
2199	#ifndef OPENSSL_NO_OCSP
2200	if (s_tlsextstatus) {
2201	SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
2202	SSL_CTX_set_tlsext_status_arg(ctx, &tlscstatp);
2203	if (ctx2) {
2204	SSL_CTX_set_tlsext_status_cb(ctx2, cert_status_cb);
2205	SSL_CTX_set_tlsext_status_arg(ctx2, &tlscstatp);
2206	}
2207	}
2208	#endif
2209	if (set_keylog_file(ctx, keylog_file))
2210	goto end;
2211
2212	if (max_early_data >= 0)
2213	SSL_CTX_set_max_early_data(ctx, max_early_data);
2214	if (recv_max_early_data >= 0)
2215	SSL_CTX_set_recv_max_early_data(ctx, recv_max_early_data);
2216
2217	if (rev)
2218	server_cb = rev_body;
2219	else if (www)
2220	server_cb = www_body;
2221	else
2222	server_cb = sv_body;
2223	#ifdef AF_UNIX
2224	if (socket_family == AF_UNIX
2225	&& unlink_unix_path)
2226	unlink(host);
2227	#endif
2228	do_server(&accept_socket, host, port, socket_family, socket_type, protocol,
2229	server_cb, context, naccept, bio_s_out);
2230	print_stats(bio_s_out, ctx);
2231	ret = 0;
2232	end:
2233	SSL_CTX_free(ctx);
2234	SSL_SESSION_free(psksess);
2235	set_keylog_file(NULL, NULL);
2236	X509_free(s_cert);
2237	sk_X509_CRL_pop_free(crls, X509_CRL_free);
2238	X509_free(s_dcert);
2239	EVP_PKEY_free(s_key);
2240	EVP_PKEY_free(s_dkey);
2241	sk_X509_pop_free(s_chain, X509_free);
2242	sk_X509_pop_free(s_dchain, X509_free);
2243	OPENSSL_free(pass);
2244	OPENSSL_free(dpass);
2245	OPENSSL_free(host);
2246	OPENSSL_free(port);
2247	X509_VERIFY_PARAM_free(vpm);
2248	free_sessions();
2249	OPENSSL_free(tlscstatp.host);
2250	OPENSSL_free(tlscstatp.port);
2251	OPENSSL_free(tlscstatp.path);
2252	SSL_CTX_free(ctx2);
2253	X509_free(s_cert2);
2254	EVP_PKEY_free(s_key2);
2255	#ifndef OPENSSL_NO_NEXTPROTONEG
2256	OPENSSL_free(next_proto.data);
2257	#endif
2258	OPENSSL_free(alpn_ctx.data);
2259	ssl_excert_free(exc);
2260	sk_OPENSSL_STRING_free(ssl_args);
2261	SSL_CONF_CTX_free(cctx);
2262	release_engine(engine);
2263	BIO_free(bio_s_out);
2264	bio_s_out = NULL;
2265	BIO_free(bio_s_msg);
2266	bio_s_msg = NULL;
2267	#ifdef CHARSET_EBCDIC
2268	BIO_meth_free(methods_ebcdic);
2269	#endif
2270	return ret;
2271	}
2272
2273	static void print_stats(BIO bio, SSL_CTX ssl_ctx)
2274	{
2275	BIO_printf(bio, "%4ld items in the session cache\n",
2276	SSL_CTX_sess_number(ssl_ctx));
2277	BIO_printf(bio, "%4ld client connects (SSL_connect())\n",
2278	SSL_CTX_sess_connect(ssl_ctx));
2279	BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n",
2280	SSL_CTX_sess_connect_renegotiate(ssl_ctx));
2281	BIO_printf(bio, "%4ld client connects that finished\n",
2282	SSL_CTX_sess_connect_good(ssl_ctx));
2283	BIO_printf(bio, "%4ld server accepts (SSL_accept())\n",
2284	SSL_CTX_sess_accept(ssl_ctx));
2285	BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n",
2286	SSL_CTX_sess_accept_renegotiate(ssl_ctx));
2287	BIO_printf(bio, "%4ld server accepts that finished\n",
2288	SSL_CTX_sess_accept_good(ssl_ctx));
2289	BIO_printf(bio, "%4ld session cache hits\n", SSL_CTX_sess_hits(ssl_ctx));
2290	BIO_printf(bio, "%4ld session cache misses\n",
2291	SSL_CTX_sess_misses(ssl_ctx));
2292	BIO_printf(bio, "%4ld session cache timeouts\n",
2293	SSL_CTX_sess_timeouts(ssl_ctx));
2294	BIO_printf(bio, "%4ld callback cache hits\n",
2295	SSL_CTX_sess_cb_hits(ssl_ctx));
2296	BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n",
2297	SSL_CTX_sess_cache_full(ssl_ctx),
2298	SSL_CTX_sess_get_cache_size(ssl_ctx));
2299	}
2300
2301	static long int count_reads_callback(BIO bio, int cmd, const char argp, size_t len,
2302	int argi, long argl, int ret, size_t *processed)
2303	{
2304	unsigned int p_counter = (unsigned int )BIO_get_callback_arg(bio);
2305
2306	switch (cmd) {
2307	case BIO_CB_READ: /* No break here */
2308	case BIO_CB_GETS:
2309	if (p_counter != NULL)
2310	++*p_counter;
2311	break;
2312	default:
2313	break;
2314	}
2315
2316	if (s_debug) {
2317	BIO_set_callback_arg(bio, (char *)bio_s_out);
2318	ret = (int)bio_dump_callback(bio, cmd, argp, len, argi, argl, ret, processed);
2319	BIO_set_callback_arg(bio, (char *)p_counter);
2320	}
2321
2322	return ret;
2323	}
2324
2325	static int sv_body(int s, int stype, int prot, unsigned char *context)
2326	{
2327	char *buf = NULL;
2328	fd_set readfds;
2329	int ret = 1, width;
2330	int k, i;
2331	unsigned long l;
2332	SSL *con = NULL;
2333	BIO *sbio;
2334	struct timeval timeout;
2335	#if !(defined(OPENSSL_SYS_WINDOWS) \|\| defined(OPENSSL_SYS_MSDOS))
2336	struct timeval *timeoutp;
2337	#endif
2338	#ifndef OPENSSL_NO_DTLS
2339	# ifndef OPENSSL_NO_SCTP
2340	int isdtls = (stype == SOCK_DGRAM \|\| prot == IPPROTO_SCTP);
2341	# else
2342	int isdtls = (stype == SOCK_DGRAM);
2343	# endif
2344	#endif
2345
2346	buf = app_malloc(bufsize, "server buffer");
2347	if (s_nbio) {
2348	if (!BIO_socket_nbio(s, 1))
2349	ERR_print_errors(bio_err);
2350	else if (!s_quiet)
2351	BIO_printf(bio_err, "Turned on non blocking io\n");
2352	}
2353
2354	con = SSL_new(ctx);
2355	if (con == NULL) {
2356	ret = -1;
2357	goto err;
2358	}
2359
2360	if (s_tlsextdebug) {
2361	SSL_set_tlsext_debug_callback(con, tlsext_cb);
2362	SSL_set_tlsext_debug_arg(con, bio_s_out);
2363	}
2364
2365	if (context != NULL
2366	&& !SSL_set_session_id_context(con, context,
2367	strlen((char *)context))) {
2368	BIO_printf(bio_err, "Error setting session id context\n");
2369	ret = -1;
2370	goto err;
2371	}
2372
2373	if (!SSL_clear(con)) {
2374	BIO_printf(bio_err, "Error clearing SSL connection\n");
2375	ret = -1;
2376	goto err;
2377	}
2378	#ifndef OPENSSL_NO_DTLS
2379	if (isdtls) {
2380	# ifndef OPENSSL_NO_SCTP
2381	if (prot == IPPROTO_SCTP)
2382	sbio = BIO_new_dgram_sctp(s, BIO_NOCLOSE);
2383	else
2384	# endif
2385	sbio = BIO_new_dgram(s, BIO_NOCLOSE);
2386	if (sbio == NULL) {
2387	BIO_printf(bio_err, "Unable to create BIO\n");
2388	ERR_print_errors(bio_err);
2389	goto err;
2390	}
2391
2392	if (enable_timeouts) {
2393	timeout.tv_sec = 0;
2394	timeout.tv_usec = DGRAM_RCV_TIMEOUT;
2395	BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
2396
2397	timeout.tv_sec = 0;
2398	timeout.tv_usec = DGRAM_SND_TIMEOUT;
2399	BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
2400	}
2401
2402	if (socket_mtu) {
2403	if (socket_mtu < DTLS_get_link_min_mtu(con)) {
2404	BIO_printf(bio_err, "MTU too small. Must be at least %ld\n",
2405	DTLS_get_link_min_mtu(con));
2406	ret = -1;
2407	BIO_free(sbio);
2408	goto err;
2409	}
2410	SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
2411	if (!DTLS_set_link_mtu(con, socket_mtu)) {
2412	BIO_printf(bio_err, "Failed to set MTU\n");
2413	ret = -1;
2414	BIO_free(sbio);
2415	goto err;
2416	}
2417	} else
2418	/* want to do MTU discovery */
2419	BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
2420
2421	# ifndef OPENSSL_NO_SCTP
2422	if (prot != IPPROTO_SCTP)
2423	# endif
2424	/* Turn on cookie exchange. Not necessary for SCTP */
2425	SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
2426	} else
2427	#endif
2428	sbio = BIO_new_socket(s, BIO_NOCLOSE);
2429
2430	if (sbio == NULL) {
2431	BIO_printf(bio_err, "Unable to create BIO\n");
2432	ERR_print_errors(bio_err);
2433	goto err;
2434	}
2435
2436	if (s_nbio_test) {
2437	BIO *test;
2438
2439	test = BIO_new(BIO_f_nbio_test());
2440	if (test == NULL) {
2441	BIO_printf(bio_err, "Unable to create BIO\n");
2442	ret = -1;
2443	BIO_free(sbio);
2444	goto err;
2445	}
2446
2447	sbio = BIO_push(test, sbio);
2448	}
2449
2450	SSL_set_bio(con, sbio, sbio);
2451	SSL_set_accept_state(con);
2452	/* SSL_set_fd(con,s); */
2453
2454	BIO_set_callback_ex(SSL_get_rbio(con), count_reads_callback);
2455	if (s_msg) {
2456	#ifndef OPENSSL_NO_SSL_TRACE
2457	if (s_msg == 2)
2458	SSL_set_msg_callback(con, SSL_trace);
2459	else
2460	#endif
2461	SSL_set_msg_callback(con, msg_cb);
2462	SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
2463	}
2464
2465	if (s_tlsextdebug) {
2466	SSL_set_tlsext_debug_callback(con, tlsext_cb);
2467	SSL_set_tlsext_debug_arg(con, bio_s_out);
2468	}
2469
2470	if (early_data) {
2471	int write_header = 1, edret = SSL_READ_EARLY_DATA_ERROR;
2472	size_t readbytes;
2473
2474	while (edret != SSL_READ_EARLY_DATA_FINISH) {
2475	for (;;) {
2476	edret = SSL_read_early_data(con, buf, bufsize, &readbytes);
2477	if (edret != SSL_READ_EARLY_DATA_ERROR)
2478	break;
2479
2480	switch (SSL_get_error(con, 0)) {
2481	case SSL_ERROR_WANT_WRITE:
2482	case SSL_ERROR_WANT_ASYNC:
2483	case SSL_ERROR_WANT_READ:
2484	/* Just keep trying - busy waiting */
2485	continue;
2486	default:
2487	BIO_printf(bio_err, "Error reading early data\n");
2488	ERR_print_errors(bio_err);
2489	goto err;
2490	}
2491	}
2492	if (readbytes > 0) {
2493	if (write_header) {
2494	BIO_printf(bio_s_out, "Early data received:\n");
2495	write_header = 0;
2496	}
2497	raw_write_stdout(buf, (unsigned int)readbytes);
2498	(void)BIO_flush(bio_s_out);
2499	}
2500	}
2501	if (write_header) {
2502	if (SSL_get_early_data_status(con) == SSL_EARLY_DATA_NOT_SENT)
2503	BIO_printf(bio_s_out, "No early data received\n");
2504	else
2505	BIO_printf(bio_s_out, "Early data was rejected\n");
2506	} else {
2507	BIO_printf(bio_s_out, "\nEnd of early data\n");
2508	}
2509	if (SSL_is_init_finished(con))
2510	print_connection_info(con);
2511	}
2512
2513	if (fileno_stdin() > s)
2514	width = fileno_stdin() + 1;
2515	else
2516	width = s + 1;
2517	for (;;) {
2518	int read_from_terminal;
2519	int read_from_sslcon;
2520
2521	read_from_terminal = 0;
2522	read_from_sslcon = SSL_has_pending(con)
2523	\|\| (async && SSL_waiting_for_async(con));
2524
2525	if (!read_from_sslcon) {
2526	FD_ZERO(&readfds);
2527	#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
2528	openssl_fdset(fileno_stdin(), &readfds);
2529	#endif
2530	openssl_fdset(s, &readfds);
2531	/*
2532	* Note: under VMS with SOCKETSHR the second parameter is
2533	* currently of type (int *) whereas under other systems it is
2534	* (void *) if you don't have a cast it will choke the compiler:
2535	* if you do have a cast then you can either go for (int *) or
2536	* (void *).
2537	*/
2538	#if defined(OPENSSL_SYS_WINDOWS) \|\| defined(OPENSSL_SYS_MSDOS)
2539	/*
2540	* Under DOS (non-djgpp) and Windows we can't select on stdin:
2541	* only on sockets. As a workaround we timeout the select every
2542	* second and check for any keypress. In a proper Windows
2543	* application we wouldn't do this because it is inefficient.
2544	*/
2545	timeout.tv_sec = 1;
2546	timeout.tv_usec = 0;
2547	i = select(width, (void *)&readfds, NULL, NULL, &timeout);
2548	if (has_stdin_waiting())
2549	read_from_terminal = 1;
2550	if ((i < 0) \|\| (!i && !read_from_terminal))
2551	continue;
2552	#else
2553	if (SSL_is_dtls(con) && DTLSv1_get_timeout(con, &timeout))
2554	timeoutp = &timeout;
2555	else
2556	timeoutp = NULL;
2557
2558	i = select(width, (void *)&readfds, NULL, NULL, timeoutp);
2559
2560	if ((SSL_is_dtls(con)) && DTLSv1_handle_timeout(con) > 0)
2561	BIO_printf(bio_err, "TIMEOUT occurred\n");
2562
2563	if (i <= 0)
2564	continue;
2565	if (FD_ISSET(fileno_stdin(), &readfds))
2566	read_from_terminal = 1;
2567	#endif
2568	if (FD_ISSET(s, &readfds))
2569	read_from_sslcon = 1;
2570	}
2571	if (read_from_terminal) {
2572	if (s_crlf) {
2573	int j, lf_num;
2574
2575	i = raw_read_stdin(buf, bufsize / 2);
2576	lf_num = 0;
2577	/* both loops are skipped when i <= 0 */
2578	for (j = 0; j < i; j++)
2579	if (buf[j] == '\n')
2580	lf_num++;
2581	for (j = i - 1; j >= 0; j--) {
2582	buf[j + lf_num] = buf[j];
2583	if (buf[j] == '\n') {
2584	lf_num--;
2585	i++;
2586	buf[j + lf_num] = '\r';
2587	}
2588	}
2589	assert(lf_num == 0);
2590	} else {
2591	i = raw_read_stdin(buf, bufsize);
2592	}
2593
2594	if (!s_quiet && !s_brief) {
2595	if ((i <= 0) \|\| (buf[0] == 'Q')) {
2596	BIO_printf(bio_s_out, "DONE\n");
2597	(void)BIO_flush(bio_s_out);
2598	BIO_closesocket(s);
2599	close_accept_socket();
2600	ret = -11;
2601	goto err;
2602	}
2603	if ((i <= 0) \|\| (buf[0] == 'q')) {
2604	BIO_printf(bio_s_out, "DONE\n");
2605	(void)BIO_flush(bio_s_out);
2606	if (SSL_version(con) != DTLS1_VERSION)
2607	BIO_closesocket(s);
2608	/*
2609	* close_accept_socket(); ret= -11;
2610	*/
2611	goto err;
2612	}
2613	if ((buf[0] == 'r') && ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2614	SSL_renegotiate(con);
2615	i = SSL_do_handshake(con);
2616	printf("SSL_do_handshake -> %d\n", i);
2617	i = 0; /* 13; */
2618	continue;
2619	}
2620	if ((buf[0] == 'R') && ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2621	SSL_set_verify(con,
2622	SSL_VERIFY_PEER \| SSL_VERIFY_CLIENT_ONCE,
2623	NULL);
2624	SSL_renegotiate(con);
2625	i = SSL_do_handshake(con);
2626	printf("SSL_do_handshake -> %d\n", i);
2627	i = 0; /* 13; */
2628	continue;
2629	}
2630	if ((buf[0] == 'K' \|\| buf[0] == 'k')
2631	&& ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2632	SSL_key_update(con, buf[0] == 'K' ?
2633	SSL_KEY_UPDATE_REQUESTED
2634	: SSL_KEY_UPDATE_NOT_REQUESTED);
2635	i = SSL_do_handshake(con);
2636	printf("SSL_do_handshake -> %d\n", i);
2637	i = 0;
2638	continue;
2639	}
2640	if (buf[0] == 'c' && ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2641	SSL_set_verify(con, SSL_VERIFY_PEER, NULL);
2642	i = SSL_verify_client_post_handshake(con);
2643	if (i == 0) {
2644	printf("Failed to initiate request\n");
2645	ERR_print_errors(bio_err);
2646	} else {
2647	i = SSL_do_handshake(con);
2648	printf("SSL_do_handshake -> %d\n", i);
2649	i = 0;
2650	}
2651	continue;
2652	}
2653	if (buf[0] == 'P') {
2654	static const char str[] = "Lets print some clear text\n";
2655	BIO_write(SSL_get_wbio(con), str, sizeof(str) -1);
2656	}
2657	if (buf[0] == 'S') {
2658	print_stats(bio_s_out, SSL_get_SSL_CTX(con));
2659	}
2660	}
2661	#ifdef CHARSET_EBCDIC
2662	ebcdic2ascii(buf, buf, i);
2663	#endif
2664	l = k = 0;
2665	for (;;) {
2666	/* should do a select for the write */
2667	#ifdef RENEG
2668	static count = 0;
2669	if (++count == 100) {
2670	count = 0;
2671	SSL_renegotiate(con);
2672	}
2673	#endif
2674	k = SSL_write(con, &(buf[l]), (unsigned int)i);
2675	#ifndef OPENSSL_NO_SRP
2676	while (SSL_get_error(con, k) == SSL_ERROR_WANT_X509_LOOKUP) {
2677	BIO_printf(bio_s_out, "LOOKUP renego during write\n");
2678
2679	lookup_srp_user(&srp_callback_parm, bio_s_out);
2680
2681	k = SSL_write(con, &(buf[l]), (unsigned int)i);
2682	}
2683	#endif
2684	switch (SSL_get_error(con, k)) {
2685	case SSL_ERROR_NONE:
2686	break;
2687	case SSL_ERROR_WANT_ASYNC:
2688	BIO_printf(bio_s_out, "Write BLOCK (Async)\n");
2689	(void)BIO_flush(bio_s_out);
2690	wait_for_async(con);
2691	break;
2692	case SSL_ERROR_WANT_WRITE:
2693	case SSL_ERROR_WANT_READ:
2694	case SSL_ERROR_WANT_X509_LOOKUP:
2695	BIO_printf(bio_s_out, "Write BLOCK\n");
2696	(void)BIO_flush(bio_s_out);
2697	break;
2698	case SSL_ERROR_WANT_ASYNC_JOB:
2699	/*
2700	* This shouldn't ever happen in s_server. Treat as an error
2701	*/
2702	case SSL_ERROR_SYSCALL:
2703	case SSL_ERROR_SSL:
2704	BIO_printf(bio_s_out, "ERROR\n");
2705	(void)BIO_flush(bio_s_out);
2706	ERR_print_errors(bio_err);
2707	ret = 1;
2708	goto err;
2709	/* break; */
2710	case SSL_ERROR_ZERO_RETURN:
2711	BIO_printf(bio_s_out, "DONE\n");
2712	(void)BIO_flush(bio_s_out);
2713	ret = 1;
2714	goto err;
2715	}
2716	if (k > 0) {
2717	l += k;
2718	i -= k;
2719	}
2720	if (i <= 0)
2721	break;
2722	}
2723	}
2724	if (read_from_sslcon) {
2725	/*
2726	* init_ssl_connection handles all async events itself so if we're
2727	* waiting for async then we shouldn't go back into
2728	* init_ssl_connection
2729	*/
2730	if ((!async \|\| !SSL_waiting_for_async(con))
2731	&& !SSL_is_init_finished(con)) {
2732	/*
2733	* Count number of reads during init_ssl_connection.
2734	* It helps us to distinguish configuration errors from errors
2735	* caused by a client.
2736	*/
2737	unsigned int read_counter = 0;
2738
2739	BIO_set_callback_arg(SSL_get_rbio(con), (char *)&read_counter);
2740	i = init_ssl_connection(con);
2741	BIO_set_callback_arg(SSL_get_rbio(con), NULL);
2742
2743	/*
2744	* If initialization fails without reads, then
2745	* there was a fatal error in configuration.
2746	*/
2747	if (i <= 0 && read_counter == 0) {
2748	ret = -1;
2749	goto err;
2750	}
2751	if (i < 0) {
2752	ret = 0;
2753	goto err;
2754	} else if (i == 0) {
2755	ret = 1;
2756	goto err;
2757	}
2758	} else {
2759	again:
2760	i = SSL_read(con, (char *)buf, bufsize);
2761	#ifndef OPENSSL_NO_SRP
2762	while (SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
2763	BIO_printf(bio_s_out, "LOOKUP renego during read\n");
2764
2765	lookup_srp_user(&srp_callback_parm, bio_s_out);
2766
2767	i = SSL_read(con, (char *)buf, bufsize);
2768	}
2769	#endif
2770	switch (SSL_get_error(con, i)) {
2771	case SSL_ERROR_NONE:
2772	#ifdef CHARSET_EBCDIC
2773	ascii2ebcdic(buf, buf, i);
2774	#endif
2775	raw_write_stdout(buf, (unsigned int)i);
2776	(void)BIO_flush(bio_s_out);
2777	if (SSL_has_pending(con))
2778	goto again;
2779	break;
2780	case SSL_ERROR_WANT_ASYNC:
2781	BIO_printf(bio_s_out, "Read BLOCK (Async)\n");
2782	(void)BIO_flush(bio_s_out);
2783	wait_for_async(con);
2784	break;
2785	case SSL_ERROR_WANT_WRITE:
2786	case SSL_ERROR_WANT_READ:
2787	BIO_printf(bio_s_out, "Read BLOCK\n");
2788	(void)BIO_flush(bio_s_out);
2789	break;
2790	case SSL_ERROR_WANT_ASYNC_JOB:
2791	/*
2792	* This shouldn't ever happen in s_server. Treat as an error
2793	*/
2794	case SSL_ERROR_SYSCALL:
2795	case SSL_ERROR_SSL:
2796	BIO_printf(bio_s_out, "ERROR\n");
2797	(void)BIO_flush(bio_s_out);
2798	ERR_print_errors(bio_err);
2799	ret = 1;
2800	goto err;
2801	case SSL_ERROR_ZERO_RETURN:
2802	BIO_printf(bio_s_out, "DONE\n");
2803	(void)BIO_flush(bio_s_out);
2804	ret = 1;
2805	goto err;
2806	}
2807	}
2808	}
2809	}
2810	err:
2811	if (con != NULL) {
2812	BIO_printf(bio_s_out, "shutting down SSL\n");
2813	do_ssl_shutdown(con);
2814	SSL_free(con);
2815	}
2816	BIO_printf(bio_s_out, "CONNECTION CLOSED\n");
2817	OPENSSL_clear_free(buf, bufsize);
2818	return ret;
2819	}
2820
2821	static void close_accept_socket(void)
2822	{
2823	BIO_printf(bio_err, "shutdown accept socket\n");
2824	if (accept_socket >= 0) {
2825	BIO_closesocket(accept_socket);
2826	}
2827	}
2828
2829	static int is_retryable(SSL *con, int i)
2830	{
2831	int err = SSL_get_error(con, i);
2832
2833	/* If it's not a fatal error, it must be retryable */
2834	return (err != SSL_ERROR_SSL)
2835	&& (err != SSL_ERROR_SYSCALL)
2836	&& (err != SSL_ERROR_ZERO_RETURN);
2837	}
2838
2839	static int init_ssl_connection(SSL *con)
2840	{
2841	int i;
2842	long verify_err;
2843	int retry = 0;
2844
2845	if (dtlslisten \|\| stateless) {
2846	BIO_ADDR *client = NULL;
2847
2848	if (dtlslisten) {
2849	if ((client = BIO_ADDR_new()) == NULL) {
2850	BIO_printf(bio_err, "ERROR - memory\n");
2851	return 0;
2852	}
2853	i = DTLSv1_listen(con, client);
2854	} else {
2855	i = SSL_stateless(con);
2856	}
2857	if (i > 0) {
2858	BIO *wbio;
2859	int fd = -1;
2860
2861	if (dtlslisten) {
2862	wbio = SSL_get_wbio(con);
2863	if (wbio) {
2864	BIO_get_fd(wbio, &fd);
2865	}
2866
2867	if (!wbio \|\| BIO_connect(fd, client, 0) == 0) {
2868	BIO_printf(bio_err, "ERROR - unable to connect\n");
2869	BIO_ADDR_free(client);
2870	return 0;
2871	}
2872
2873	(void)BIO_ctrl_set_connected(wbio, client);
2874	BIO_ADDR_free(client);
2875	dtlslisten = 0;
2876	} else {
2877	stateless = 0;
2878	}
2879	i = SSL_accept(con);
2880	} else {
2881	BIO_ADDR_free(client);
2882	}
2883	} else {
2884	do {
2885	i = SSL_accept(con);
2886
2887	if (i <= 0)
2888	retry = is_retryable(con, i);
2889	#ifdef CERT_CB_TEST_RETRY
2890	{
2891	while (i <= 0
2892	&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP
2893	&& SSL_get_state(con) == TLS_ST_SR_CLNT_HELLO) {
2894	BIO_printf(bio_err,
2895	"LOOKUP from certificate callback during accept\n");
2896	i = SSL_accept(con);
2897	if (i <= 0)
2898	retry = is_retryable(con, i);
2899	}
2900	}
2901	#endif
2902
2903	#ifndef OPENSSL_NO_SRP
2904	while (i <= 0
2905	&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
2906	BIO_printf(bio_s_out, "LOOKUP during accept %s\n",
2907	srp_callback_parm.login);
2908
2909	lookup_srp_user(&srp_callback_parm, bio_s_out);
2910
2911	i = SSL_accept(con);
2912	if (i <= 0)
2913	retry = is_retryable(con, i);
2914	}
2915	#endif
2916	} while (i < 0 && SSL_waiting_for_async(con));
2917	}
2918
2919	if (i <= 0) {
2920	if (((dtlslisten \|\| stateless) && i == 0)
2921	\|\| (!dtlslisten && !stateless && retry)) {
2922	BIO_printf(bio_s_out, "DELAY\n");
2923	return 1;
2924	}
2925
2926	BIO_printf(bio_err, "ERROR\n");
2927
2928	verify_err = SSL_get_verify_result(con);
2929	if (verify_err != X509_V_OK) {
2930	BIO_printf(bio_err, "verify error:%s\n",
2931	X509_verify_cert_error_string(verify_err));
2932	}
2933	/* Always print any error messages */
2934	ERR_print_errors(bio_err);
2935	return 0;
2936	}
2937
2938	print_connection_info(con);
2939	return 1;
2940	}
2941
2942	static void print_connection_info(SSL *con)
2943	{
2944	const char *str;
2945	X509 *peer;
2946	char buf[BUFSIZ];
2947	#if !defined(OPENSSL_NO_NEXTPROTONEG)
2948	const unsigned char *next_proto_neg;
2949	unsigned next_proto_neg_len;
2950	#endif
2951	unsigned char *exportedkeymat;
2952	int i;
2953
2954	if (s_brief)
2955	print_ssl_summary(con);
2956
2957	PEM_write_bio_SSL_SESSION(bio_s_out, SSL_get_session(con));
2958
2959	peer = SSL_get0_peer_certificate(con);
2960	if (peer != NULL) {
2961	BIO_printf(bio_s_out, "Client certificate\n");
2962	PEM_write_bio_X509(bio_s_out, peer);
2963	dump_cert_text(bio_s_out, peer);
2964	peer = NULL;
2965	}
2966
2967	if (SSL_get_shared_ciphers(con, buf, sizeof(buf)) != NULL)
2968	BIO_printf(bio_s_out, "Shared ciphers:%s\n", buf);
2969	str = SSL_CIPHER_get_name(SSL_get_current_cipher(con));
2970	ssl_print_sigalgs(bio_s_out, con);
2971	#ifndef OPENSSL_NO_EC
2972	ssl_print_point_formats(bio_s_out, con);
2973	ssl_print_groups(bio_s_out, con, 0);
2974	#endif
2975	print_ca_names(bio_s_out, con);
2976	BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)");
2977
2978	#if !defined(OPENSSL_NO_NEXTPROTONEG)
2979	SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
2980	if (next_proto_neg) {
2981	BIO_printf(bio_s_out, "NEXTPROTO is ");
2982	BIO_write(bio_s_out, next_proto_neg, next_proto_neg_len);
2983	BIO_printf(bio_s_out, "\n");
2984	}
2985	#endif
2986	#ifndef OPENSSL_NO_SRTP
2987	{
2988	SRTP_PROTECTION_PROFILE *srtp_profile
2989	= SSL_get_selected_srtp_profile(con);
2990
2991	if (srtp_profile)
2992	BIO_printf(bio_s_out, "SRTP Extension negotiated, profile=%s\n",
2993	srtp_profile->name);
2994	}
2995	#endif
2996	if (SSL_session_reused(con))
2997	BIO_printf(bio_s_out, "Reused session-id\n");
2998
2999	ssl_print_secure_renegotiation_notes(bio_s_out, con);
3000
3001	if ((SSL_get_options(con) & SSL_OP_NO_RENEGOTIATION))
3002	BIO_printf(bio_s_out, "Renegotiation is DISABLED\n");
3003
3004	if (keymatexportlabel != NULL) {
3005	BIO_printf(bio_s_out, "Keying material exporter:\n");
3006	BIO_printf(bio_s_out, " Label: '%s'\n", keymatexportlabel);
3007	BIO_printf(bio_s_out, " Length: %i bytes\n", keymatexportlen);
3008	exportedkeymat = app_malloc(keymatexportlen, "export key");
3009	if (SSL_export_keying_material(con, exportedkeymat,
3010	keymatexportlen,
3011	keymatexportlabel,
3012	strlen(keymatexportlabel),
3013	NULL, 0, 0) <= 0) {
3014	BIO_printf(bio_s_out, " Error\n");
3015	} else {
3016	BIO_printf(bio_s_out, " Keying material: ");
3017	for (i = 0; i < keymatexportlen; i++)
3018	BIO_printf(bio_s_out, "%02X", exportedkeymat[i]);
3019	BIO_printf(bio_s_out, "\n");
3020	}
3021	OPENSSL_free(exportedkeymat);
3022	}
3023	#ifndef OPENSSL_NO_KTLS
3024	if (BIO_get_ktls_send(SSL_get_wbio(con)))
3025	BIO_printf(bio_err, "Using Kernel TLS for sending\n");
3026	if (BIO_get_ktls_recv(SSL_get_rbio(con)))
3027	BIO_printf(bio_err, "Using Kernel TLS for receiving\n");
3028	#endif
3029
3030	(void)BIO_flush(bio_s_out);
3031	}
3032
3033	static int www_body(int s, int stype, int prot, unsigned char *context)
3034	{
3035	char *buf = NULL;
3036	int ret = 1;
3037	int i, j, k, dot;
3038	SSL *con;
3039	const SSL_CIPHER *c;
3040	BIO io, ssl_bio, *sbio;
3041	#ifdef RENEG
3042	int total_bytes = 0;
3043	#endif
3044	int width;
3045	#ifndef OPENSSL_NO_KTLS
3046	int use_sendfile_for_req = use_sendfile;
3047	#endif
3048	fd_set readfds;
3049	const char *opmode;
3050	#ifdef CHARSET_EBCDIC
3051	BIO *filter;
3052	#endif
3053
3054	/* Set width for a select call if needed */
3055	width = s + 1;
3056
3057	/* as we use BIO_gets(), and it always null terminates data, we need
3058	* to allocate 1 byte longer buffer to fit the full 2^14 byte record */
3059	buf = app_malloc(bufsize + 1, "server www buffer");
3060	io = BIO_new(BIO_f_buffer());
3061	ssl_bio = BIO_new(BIO_f_ssl());
3062	if ((io == NULL) \|\| (ssl_bio == NULL))
3063	goto err;
3064
3065	if (s_nbio) {
3066	if (!BIO_socket_nbio(s, 1))
3067	ERR_print_errors(bio_err);
3068	else if (!s_quiet)
3069	BIO_printf(bio_err, "Turned on non blocking io\n");
3070	}
3071
3072	/* lets make the output buffer a reasonable size */
3073	if (BIO_set_write_buffer_size(io, bufsize) <= 0)
3074	goto err;
3075
3076	if ((con = SSL_new(ctx)) == NULL)
3077	goto err;
3078
3079	if (s_tlsextdebug) {
3080	SSL_set_tlsext_debug_callback(con, tlsext_cb);
3081	SSL_set_tlsext_debug_arg(con, bio_s_out);
3082	}
3083
3084	if (context != NULL
3085	&& !SSL_set_session_id_context(con, context,
3086	strlen((char *)context))) {
3087	SSL_free(con);
3088	goto err;
3089	}
3090
3091	sbio = BIO_new_socket(s, BIO_NOCLOSE);
3092	if (sbio == NULL) {
3093	SSL_free(con);
3094	goto err;
3095	}
3096
3097	if (s_nbio_test) {
3098	BIO *test;
3099
3100	test = BIO_new(BIO_f_nbio_test());
3101	if (test == NULL) {
3102	SSL_free(con);
3103	BIO_free(sbio);
3104	goto err;
3105	}
3106
3107	sbio = BIO_push(test, sbio);
3108	}
3109	SSL_set_bio(con, sbio, sbio);
3110	SSL_set_accept_state(con);
3111
3112	/* No need to free \|con\| after this. Done by BIO_free(ssl_bio) */
3113	BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
3114	BIO_push(io, ssl_bio);
3115	ssl_bio = NULL;
3116	#ifdef CHARSET_EBCDIC
3117	filter = BIO_new(BIO_f_ebcdic_filter());
3118	if (filter == NULL)
3119	goto err;
3120
3121	io = BIO_push(filter, io);
3122	#endif
3123
3124	if (s_debug) {
3125	BIO_set_callback_ex(SSL_get_rbio(con), bio_dump_callback);
3126	BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
3127	}
3128	if (s_msg) {
3129	#ifndef OPENSSL_NO_SSL_TRACE
3130	if (s_msg == 2)
3131	SSL_set_msg_callback(con, SSL_trace);
3132	else
3133	#endif
3134	SSL_set_msg_callback(con, msg_cb);
3135	SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
3136	}
3137
3138	for (;;) {
3139	i = BIO_gets(io, buf, bufsize + 1);
3140	if (i < 0) { /* error */
3141	if (!BIO_should_retry(io) && !SSL_waiting_for_async(con)) {
3142	if (!s_quiet)
3143	ERR_print_errors(bio_err);
3144	goto err;
3145	} else {
3146	BIO_printf(bio_s_out, "read R BLOCK\n");
3147	#ifndef OPENSSL_NO_SRP
3148	if (BIO_should_io_special(io)
3149	&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3150	BIO_printf(bio_s_out, "LOOKUP renego during read\n");
3151
3152	lookup_srp_user(&srp_callback_parm, bio_s_out);
3153
3154	continue;
3155	}
3156	#endif
3157	ossl_sleep(1000);
3158	continue;
3159	}
3160	} else if (i == 0) { /* end of input */
3161	ret = 1;
3162	goto end;
3163	}
3164
3165	/* else we have data */
3166	if (((www == 1) && (strncmp("GET ", buf, 4) == 0)) \|\|
3167	((www == 2) && (strncmp("GET /stats ", buf, 11) == 0))) {
3168	char *p;
3169	X509 *peer = NULL;
3170	STACK_OF(SSL_CIPHER) *sk;
3171	static const char *space = " ";
3172
3173	if (www == 1 && strncmp("GET /reneg", buf, 10) == 0) {
3174	if (strncmp("GET /renegcert", buf, 14) == 0)
3175	SSL_set_verify(con,
3176	SSL_VERIFY_PEER \| SSL_VERIFY_CLIENT_ONCE,
3177	NULL);
3178	i = SSL_renegotiate(con);
3179	BIO_printf(bio_s_out, "SSL_renegotiate -> %d\n", i);
3180	/* Send the HelloRequest */
3181	i = SSL_do_handshake(con);
3182	if (i <= 0) {
3183	BIO_printf(bio_s_out, "SSL_do_handshake() Retval %d\n",
3184	SSL_get_error(con, i));
3185	ERR_print_errors(bio_err);
3186	goto err;
3187	}
3188	/* Wait for a ClientHello to come back */
3189	FD_ZERO(&readfds);
3190	openssl_fdset(s, &readfds);
3191	i = select(width, (void *)&readfds, NULL, NULL, NULL);
3192	if (i <= 0 \|\| !FD_ISSET(s, &readfds)) {
3193	BIO_printf(bio_s_out,
3194	"Error waiting for client response\n");
3195	ERR_print_errors(bio_err);
3196	goto err;
3197	}
3198	/*
3199	* We're not actually expecting any data here and we ignore
3200	* any that is sent. This is just to force the handshake that
3201	* we're expecting to come from the client. If they haven't
3202	* sent one there's not much we can do.
3203	*/
3204	BIO_gets(io, buf, bufsize + 1);
3205	}
3206
3207	BIO_puts(io,
3208	"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
3209	BIO_puts(io, "<HTML><BODY BGCOLOR=\"#ffffff\">\n");
3210	BIO_puts(io, "<pre>\n");
3211	/* BIO_puts(io, OpenSSL_version(OPENSSL_VERSION)); */
3212	BIO_puts(io, "\n");
3213	for (i = 0; i < local_argc; i++) {
3214	const char *myp;
3215	for (myp = local_argv[i]; *myp; myp++)
3216	switch (*myp) {
3217	case '<':
3218	BIO_puts(io, "<");
3219	break;
3220	case '>':
3221	BIO_puts(io, ">");
3222	break;
3223	case '&':
3224	BIO_puts(io, "&");
3225	break;
3226	default:
3227	BIO_write(io, myp, 1);
3228	break;
3229	}
3230	BIO_write(io, " ", 1);
3231	}
3232	BIO_puts(io, "\n");
3233
3234	ssl_print_secure_renegotiation_notes(io, con);
3235
3236	/*
3237	* The following is evil and should not really be done
3238	*/
3239	BIO_printf(io, "Ciphers supported in s_server binary\n");
3240	sk = SSL_get_ciphers(con);
3241	j = sk_SSL_CIPHER_num(sk);
3242	for (i = 0; i < j; i++) {
3243	c = sk_SSL_CIPHER_value(sk, i);
3244	BIO_printf(io, "%-11s:%-25s ",
3245	SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
3246	if ((((i + 1) % 2) == 0) && (i + 1 != j))
3247	BIO_puts(io, "\n");
3248	}
3249	BIO_puts(io, "\n");
3250	p = SSL_get_shared_ciphers(con, buf, bufsize);
3251	if (p != NULL) {
3252	BIO_printf(io,
3253	"---\nCiphers common between both SSL end points:\n");
3254	j = i = 0;
3255	while (*p) {
3256	if (*p == ':') {
3257	BIO_write(io, space, 26 - j);
3258	i++;
3259	j = 0;
3260	BIO_write(io, ((i % 3) ? " " : "\n"), 1);
3261	} else {
3262	BIO_write(io, p, 1);
3263	j++;
3264	}
3265	p++;
3266	}
3267	BIO_puts(io, "\n");
3268	}
3269	ssl_print_sigalgs(io, con);
3270	#ifndef OPENSSL_NO_EC
3271	ssl_print_groups(io, con, 0);
3272	#endif
3273	print_ca_names(io, con);
3274	BIO_printf(io, (SSL_session_reused(con)
3275	? "---\nReused, " : "---\nNew, "));
3276	c = SSL_get_current_cipher(con);
3277	BIO_printf(io, "%s, Cipher is %s\n",
3278	SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
3279	SSL_SESSION_print(io, SSL_get_session(con));
3280	BIO_printf(io, "---\n");
3281	print_stats(io, SSL_get_SSL_CTX(con));
3282	BIO_printf(io, "---\n");
3283	peer = SSL_get0_peer_certificate(con);
3284	if (peer != NULL) {
3285	BIO_printf(io, "Client certificate\n");
3286	X509_print(io, peer);
3287	PEM_write_bio_X509(io, peer);
3288	peer = NULL;
3289	} else {
3290	BIO_puts(io, "no client certificate available\n");
3291	}
3292	BIO_puts(io, "</pre></BODY></HTML>\r\n\r\n");
3293	break;
3294	} else if ((www == 2 \|\| www == 3)
3295	&& (strncmp("GET /", buf, 5) == 0)) {
3296	BIO *file;
3297	char p, e;
3298	static const char *text =
3299	"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
3300
3301	/* skip the '/' */
3302	p = &(buf[5]);
3303
3304	dot = 1;
3305	for (e = p; *e != '\0'; e++) {
3306	if (e[0] == ' ')
3307	break;
3308
3309	if (e[0] == ':') {
3310	/* Windows drive. We treat this the same way as ".." */
3311	dot = -1;
3312	break;
3313	}
3314
3315	switch (dot) {
3316	case 1:
3317	dot = (e[0] == '.') ? 2 : 0;
3318	break;
3319	case 2:
3320	dot = (e[0] == '.') ? 3 : 0;
3321	break;
3322	case 3:
3323	dot = (e[0] == '/' \|\| e[0] == '\\') ? -1 : 0;
3324	break;
3325	}
3326	if (dot == 0)
3327	dot = (e[0] == '/' \|\| e[0] == '\\') ? 1 : 0;
3328	}
3329	dot = (dot == 3) \|\| (dot == -1); /* filename contains ".."
3330	* component */
3331
3332	if (*e == '\0') {
3333	BIO_puts(io, text);
3334	BIO_printf(io, "'%s' is an invalid file name\r\n", p);
3335	break;
3336	}
3337	*e = '\0';
3338
3339	if (dot) {
3340	BIO_puts(io, text);
3341	BIO_printf(io, "'%s' contains '..' or ':'\r\n", p);
3342	break;
3343	}
3344
3345	if (p == '/' \|\| p == '\\') {
3346	BIO_puts(io, text);
3347	BIO_printf(io, "'%s' is an invalid path\r\n", p);
3348	break;
3349	}
3350
3351	/* if a directory, do the index thang */
3352	if (app_isdir(p) > 0) {
3353	BIO_puts(io, text);
3354	BIO_printf(io, "'%s' is a directory\r\n", p);
3355	break;
3356	}
3357
3358	opmode = (http_server_binmode == 1) ? "rb" : "r";
3359	if ((file = BIO_new_file(p, opmode)) == NULL) {
3360	BIO_puts(io, text);
3361	BIO_printf(io, "Error opening '%s' mode='%s'\r\n", p, opmode);
3362	ERR_print_errors(io);
3363	break;
3364	}
3365
3366	if (!s_quiet)
3367	BIO_printf(bio_err, "FILE:%s\n", p);
3368
3369	if (www == 2) {
3370	i = strlen(p);
3371	if (((i > 5) && (strcmp(&(p[i - 5]), ".html") == 0)) \|\|
3372	((i > 4) && (strcmp(&(p[i - 4]), ".php") == 0)) \|\|
3373	((i > 4) && (strcmp(&(p[i - 4]), ".htm") == 0)))
3374	BIO_puts(io,
3375	"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
3376	else
3377	BIO_puts(io,
3378	"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
3379	}
3380	/* send the file */
3381	#ifndef OPENSSL_NO_KTLS
3382	if (use_sendfile_for_req && !BIO_get_ktls_send(SSL_get_wbio(con))) {
3383	BIO_printf(bio_err, "Warning: sendfile requested but KTLS is not available\n");
3384	use_sendfile_for_req = 0;
3385	}
3386	if (use_sendfile_for_req) {
3387	FILE *fp = NULL;
3388	int fd;
3389	struct stat st;
3390	off_t offset = 0;
3391	size_t filesize;
3392
3393	BIO_get_fp(file, &fp);
3394	fd = fileno(fp);
3395	if (fstat(fd, &st) < 0) {
3396	BIO_printf(io, "Error fstat '%s'\r\n", p);
3397	ERR_print_errors(io);
3398	goto write_error;
3399	}
3400
3401	filesize = st.st_size;
3402	if (((int)BIO_flush(io)) < 0)
3403	goto write_error;
3404
3405	for (;;) {
3406	i = SSL_sendfile(con, fd, offset, filesize, 0);
3407	if (i < 0) {
3408	BIO_printf(io, "Error SSL_sendfile '%s'\r\n", p);
3409	ERR_print_errors(io);
3410	break;
3411	} else {
3412	offset += i;
3413	filesize -= i;
3414	}
3415
3416	if (filesize <= 0) {
3417	if (!s_quiet)
3418	BIO_printf(bio_err, "KTLS SENDFILE '%s' OK\n", p);
3419
3420	break;
3421	}
3422	}
3423	} else
3424	#endif
3425	{
3426	for (;;) {
3427	i = BIO_read(file, buf, bufsize);
3428	if (i <= 0)
3429	break;
3430
3431	#ifdef RENEG
3432	total_bytes += i;
3433	BIO_printf(bio_err, "%d\n", i);
3434	if (total_bytes > 3 * 1024) {
3435	total_bytes = 0;
3436	BIO_printf(bio_err, "RENEGOTIATE\n");
3437	SSL_renegotiate(con);
3438	}
3439	#endif
3440
3441	for (j = 0; j < i;) {
3442	#ifdef RENEG
3443	static count = 0;
3444	if (++count == 13)
3445	SSL_renegotiate(con);
3446	#endif
3447	k = BIO_write(io, &(buf[j]), i - j);
3448	if (k <= 0) {
3449	if (!BIO_should_retry(io)
3450	&& !SSL_waiting_for_async(con)) {
3451	goto write_error;
3452	} else {
3453	BIO_printf(bio_s_out, "rwrite W BLOCK\n");
3454	}
3455	} else {
3456	j += k;
3457	}
3458	}
3459	}
3460	}
3461	write_error:
3462	BIO_free(file);
3463	break;
3464	}
3465	}
3466
3467	for (;;) {
3468	i = (int)BIO_flush(io);
3469	if (i <= 0) {
3470	if (!BIO_should_retry(io))
3471	break;
3472	} else
3473	break;
3474	}
3475	end:
3476	/* make sure we re-use sessions */
3477	do_ssl_shutdown(con);
3478
3479	err:
3480	OPENSSL_free(buf);
3481	BIO_free(ssl_bio);
3482	BIO_free_all(io);
3483	return ret;
3484	}
3485
3486	static int rev_body(int s, int stype, int prot, unsigned char *context)
3487	{
3488	char *buf = NULL;
3489	int i;
3490	int ret = 1;
3491	SSL *con;
3492	BIO io, ssl_bio, *sbio;
3493	#ifdef CHARSET_EBCDIC
3494	BIO *filter;
3495	#endif
3496
3497	/* as we use BIO_gets(), and it always null terminates data, we need
3498	* to allocate 1 byte longer buffer to fit the full 2^14 byte record */
3499	buf = app_malloc(bufsize + 1, "server rev buffer");
3500	io = BIO_new(BIO_f_buffer());
3501	ssl_bio = BIO_new(BIO_f_ssl());
3502	if ((io == NULL) \|\| (ssl_bio == NULL))
3503	goto err;
3504
3505	/* lets make the output buffer a reasonable size */
3506	if (BIO_set_write_buffer_size(io, bufsize) <= 0)
3507	goto err;
3508
3509	if ((con = SSL_new(ctx)) == NULL)
3510	goto err;
3511
3512	if (s_tlsextdebug) {
3513	SSL_set_tlsext_debug_callback(con, tlsext_cb);
3514	SSL_set_tlsext_debug_arg(con, bio_s_out);
3515	}
3516	if (context != NULL
3517	&& !SSL_set_session_id_context(con, context,
3518	strlen((char *)context))) {
3519	SSL_free(con);
3520	ERR_print_errors(bio_err);
3521	goto err;
3522	}
3523
3524	sbio = BIO_new_socket(s, BIO_NOCLOSE);
3525	if (sbio == NULL) {
3526	SSL_free(con);
3527	ERR_print_errors(bio_err);
3528	goto err;
3529	}
3530
3531	SSL_set_bio(con, sbio, sbio);
3532	SSL_set_accept_state(con);
3533
3534	/* No need to free \|con\| after this. Done by BIO_free(ssl_bio) */
3535	BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
3536	BIO_push(io, ssl_bio);
3537	ssl_bio = NULL;
3538	#ifdef CHARSET_EBCDIC
3539	filter = BIO_new(BIO_f_ebcdic_filter());
3540	if (filter == NULL)
3541	goto err;
3542
3543	io = BIO_push(filter, io);
3544	#endif
3545
3546	if (s_debug) {
3547	BIO_set_callback_ex(SSL_get_rbio(con), bio_dump_callback);
3548	BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
3549	}
3550	if (s_msg) {
3551	#ifndef OPENSSL_NO_SSL_TRACE
3552	if (s_msg == 2)
3553	SSL_set_msg_callback(con, SSL_trace);
3554	else
3555	#endif
3556	SSL_set_msg_callback(con, msg_cb);
3557	SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
3558	}
3559
3560	for (;;) {
3561	i = BIO_do_handshake(io);
3562	if (i > 0)
3563	break;
3564	if (!BIO_should_retry(io)) {
3565	BIO_puts(bio_err, "CONNECTION FAILURE\n");
3566	ERR_print_errors(bio_err);
3567	goto end;
3568	}
3569	#ifndef OPENSSL_NO_SRP
3570	if (BIO_should_io_special(io)
3571	&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3572	BIO_printf(bio_s_out, "LOOKUP renego during accept\n");
3573
3574	lookup_srp_user(&srp_callback_parm, bio_s_out);
3575
3576	continue;
3577	}
3578	#endif
3579	}
3580	BIO_printf(bio_err, "CONNECTION ESTABLISHED\n");
3581	print_ssl_summary(con);
3582
3583	for (;;) {
3584	i = BIO_gets(io, buf, bufsize + 1);
3585	if (i < 0) { /* error */
3586	if (!BIO_should_retry(io)) {
3587	if (!s_quiet)
3588	ERR_print_errors(bio_err);
3589	goto err;
3590	} else {
3591	BIO_printf(bio_s_out, "read R BLOCK\n");
3592	#ifndef OPENSSL_NO_SRP
3593	if (BIO_should_io_special(io)
3594	&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3595	BIO_printf(bio_s_out, "LOOKUP renego during read\n");
3596
3597	lookup_srp_user(&srp_callback_parm, bio_s_out);
3598
3599	continue;
3600	}
3601	#endif
3602	ossl_sleep(1000);
3603	continue;
3604	}
3605	} else if (i == 0) { /* end of input */
3606	ret = 1;
3607	BIO_printf(bio_err, "CONNECTION CLOSED\n");
3608	goto end;
3609	} else {
3610	char *p = buf + i - 1;
3611	while (i && (p == '\n' \|\| p == '\r')) {
3612	p--;
3613	i--;
3614	}
3615	if (!s_ign_eof && (i == 5) && (strncmp(buf, "CLOSE", 5) == 0)) {
3616	ret = 1;
3617	BIO_printf(bio_err, "CONNECTION CLOSED\n");
3618	goto end;
3619	}
3620	BUF_reverse((unsigned char *)buf, NULL, i);
3621	buf[i] = '\n';
3622	BIO_write(io, buf, i + 1);
3623	for (;;) {
3624	i = BIO_flush(io);
3625	if (i > 0)
3626	break;
3627	if (!BIO_should_retry(io))
3628	goto end;
3629	}
3630	}
3631	}
3632	end:
3633	/* make sure we re-use sessions */
3634	do_ssl_shutdown(con);
3635
3636	err:
3637
3638	OPENSSL_free(buf);
3639	BIO_free(ssl_bio);
3640	BIO_free_all(io);
3641	return ret;
3642	}
3643
3644	#define MAX_SESSION_ID_ATTEMPTS 10
3645	static int generate_session_id(SSL ssl, unsigned char id,
3646	unsigned int *id_len)
3647	{
3648	unsigned int count = 0;
3649	unsigned int session_id_prefix_len = strlen(session_id_prefix);
3650
3651	do {
3652	if (RAND_bytes(id, *id_len) <= 0)
3653	return 0;
3654	/*
3655	* Prefix the session_id with the required prefix. NB: If our prefix
3656	* is too long, clip it - but there will be worse effects anyway, eg.
3657	* the server could only possibly create 1 session ID (ie. the
3658	* prefix!) so all future session negotiations will fail due to
3659	* conflicts.
3660	*/
3661	memcpy(id, session_id_prefix,
3662	(session_id_prefix_len < *id_len) ?
3663	session_id_prefix_len : *id_len);
3664	}
3665	while (SSL_has_matching_session_id(ssl, id, *id_len) &&
3666	(++count < MAX_SESSION_ID_ATTEMPTS));
3667	if (count >= MAX_SESSION_ID_ATTEMPTS)
3668	return 0;
3669	return 1;
3670	}
3671
3672	/*
3673	* By default s_server uses an in-memory cache which caches SSL_SESSION
3674	* structures without any serialization. This hides some bugs which only
3675	* become apparent in deployed servers. By implementing a basic external
3676	* session cache some issues can be debugged using s_server.
3677	*/
3678
3679	typedef struct simple_ssl_session_st {
3680	unsigned char *id;
3681	unsigned int idlen;
3682	unsigned char *der;
3683	int derlen;
3684	struct simple_ssl_session_st *next;
3685	} simple_ssl_session;
3686
3687	static simple_ssl_session *first = NULL;
3688
3689	static int add_session(SSL ssl, SSL_SESSION session)
3690	{
3691	simple_ssl_session sess = app_malloc(sizeof(sess), "get session");
3692	unsigned char *p;
3693
3694	SSL_SESSION_get_id(session, &sess->idlen);
3695	sess->derlen = i2d_SSL_SESSION(session, NULL);
3696	if (sess->derlen < 0) {
3697	BIO_printf(bio_err, "Error encoding session\n");
3698	OPENSSL_free(sess);
3699	return 0;
3700	}
3701
3702	sess->id = OPENSSL_memdup(SSL_SESSION_get_id(session, NULL), sess->idlen);
3703	sess->der = app_malloc(sess->derlen, "get session buffer");
3704	if (!sess->id) {
3705	BIO_printf(bio_err, "Out of memory adding to external cache\n");
3706	OPENSSL_free(sess->id);
3707	OPENSSL_free(sess->der);
3708	OPENSSL_free(sess);
3709	return 0;
3710	}
3711	p = sess->der;
3712
3713	/* Assume it still works. */
3714	if (i2d_SSL_SESSION(session, &p) != sess->derlen) {
3715	BIO_printf(bio_err, "Unexpected session encoding length\n");
3716	OPENSSL_free(sess->id);
3717	OPENSSL_free(sess->der);
3718	OPENSSL_free(sess);
3719	return 0;
3720	}
3721
3722	sess->next = first;
3723	first = sess;
3724	BIO_printf(bio_err, "New session added to external cache\n");
3725	return 0;
3726	}
3727
3728	static SSL_SESSION get_session(SSL ssl, const unsigned char *id, int idlen,
3729	int *do_copy)
3730	{
3731	simple_ssl_session *sess;
3732	*do_copy = 0;
3733	for (sess = first; sess; sess = sess->next) {
3734	if (idlen == (int)sess->idlen && !memcmp(sess->id, id, idlen)) {
3735	const unsigned char *p = sess->der;
3736	BIO_printf(bio_err, "Lookup session: cache hit\n");
3737	return d2i_SSL_SESSION(NULL, &p, sess->derlen);
3738	}
3739	}
3740	BIO_printf(bio_err, "Lookup session: cache miss\n");
3741	return NULL;
3742	}
3743
3744	static void del_session(SSL_CTX sctx, SSL_SESSION session)
3745	{
3746	simple_ssl_session sess, prev = NULL;
3747	const unsigned char *id;
3748	unsigned int idlen;
3749	id = SSL_SESSION_get_id(session, &idlen);
3750	for (sess = first; sess; sess = sess->next) {
3751	if (idlen == sess->idlen && !memcmp(sess->id, id, idlen)) {
3752	if (prev)
3753	prev->next = sess->next;
3754	else
3755	first = sess->next;
3756	OPENSSL_free(sess->id);
3757	OPENSSL_free(sess->der);
3758	OPENSSL_free(sess);
3759	return;
3760	}
3761	prev = sess;
3762	}
3763	}
3764
3765	static void init_session_cache_ctx(SSL_CTX *sctx)
3766	{
3767	SSL_CTX_set_session_cache_mode(sctx,
3768	SSL_SESS_CACHE_NO_INTERNAL \|
3769	SSL_SESS_CACHE_SERVER);
3770	SSL_CTX_sess_set_new_cb(sctx, add_session);
3771	SSL_CTX_sess_set_get_cb(sctx, get_session);
3772	SSL_CTX_sess_set_remove_cb(sctx, del_session);
3773	}
3774
3775	static void free_sessions(void)
3776	{
3777	simple_ssl_session sess, tsess;
3778	for (sess = first; sess;) {
3779	OPENSSL_free(sess->id);
3780	OPENSSL_free(sess->der);
3781	tsess = sess;
3782	sess = sess->next;
3783	OPENSSL_free(tsess);
3784	}
3785	first = NULL;
3786	}
3787
3788	#endif /* OPENSSL_NO_SOCK */

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source: vbox/trunk/src/libs/openssl-3.1.3/apps/s_server.c@ 102210

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