s_server.c@ 107850

Last change on this file since 107850 was 104078, checked in by vboxsync, 11 months ago
openssl-3.1.5: Applied and adjusted our OpenSSL changes to 3.1.4. bugref:10638
File size: 120.4 KB

Line
1	/*
2	* Copyright 1995-2024 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
1673	if (rev && socket_type == SOCK_DGRAM) {
1674	BIO_printf(bio_err, "Can't use -rev with DTLS\n");
1675	goto end;
1676	}
1677	#endif
1678
1679	if (stateless && socket_type != SOCK_STREAM) {
1680	BIO_printf(bio_err, "Can only use --stateless with TLS\n");
1681	goto end;
1682	}
1683
1684	#ifdef AF_UNIX
1685	if (socket_family == AF_UNIX && socket_type != SOCK_STREAM) {
1686	BIO_printf(bio_err,
1687	"Can't use unix sockets and datagrams together\n");
1688	goto end;
1689	}
1690	#endif
1691	if (early_data && (www > 0 \|\| rev)) {
1692	BIO_printf(bio_err,
1693	"Can't use -early_data in combination with -www, -WWW, -HTTP, or -rev\n");
1694	goto end;
1695	}
1696
1697	#ifndef OPENSSL_NO_SCTP
1698	if (protocol == IPPROTO_SCTP) {
1699	if (socket_type != SOCK_DGRAM) {
1700	BIO_printf(bio_err, "Can't use -sctp without DTLS\n");
1701	goto end;
1702	}
1703	/* SCTP is unusual. It uses DTLS over a SOCK_STREAM protocol */
1704	socket_type = SOCK_STREAM;
1705	}
1706	#endif
1707
1708	#ifndef OPENSSL_NO_KTLS
1709	if (use_sendfile && www <= 1) {
1710	BIO_printf(bio_err, "Can't use -sendfile without -WWW or -HTTP\n");
1711	goto end;
1712	}
1713	#endif
1714
1715	if (!app_passwd(passarg, dpassarg, &pass, &dpass)) {
1716	BIO_printf(bio_err, "Error getting password\n");
1717	goto end;
1718	}
1719
1720	if (s_key_file == NULL)
1721	s_key_file = s_cert_file;
1722
1723	if (s_key_file2 == NULL)
1724	s_key_file2 = s_cert_file2;
1725
1726	if (!load_excert(&exc))
1727	goto end;
1728
1729	if (nocert == 0) {
1730	s_key = load_key(s_key_file, s_key_format, 0, pass, engine,
1731	"server certificate private key");
1732	if (s_key == NULL)
1733	goto end;
1734
1735	s_cert = load_cert_pass(s_cert_file, s_cert_format, 1, pass,
1736	"server certificate");
1737
1738	if (s_cert == NULL)
1739	goto end;
1740	if (s_chain_file != NULL) {
1741	if (!load_certs(s_chain_file, 0, &s_chain, NULL,
1742	"server certificate chain"))
1743	goto end;
1744	}
1745
1746	if (tlsextcbp.servername != NULL) {
1747	s_key2 = load_key(s_key_file2, s_key_format, 0, pass, engine,
1748	"second server certificate private key");
1749	if (s_key2 == NULL)
1750	goto end;
1751
1752	s_cert2 = load_cert_pass(s_cert_file2, s_cert_format, 1, pass,
1753	"second server certificate");
1754
1755	if (s_cert2 == NULL)
1756	goto end;
1757	}
1758	}
1759	#if !defined(OPENSSL_NO_NEXTPROTONEG)
1760	if (next_proto_neg_in) {
1761	next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1762	if (next_proto.data == NULL)
1763	goto end;
1764	}
1765	#endif
1766	alpn_ctx.data = NULL;
1767	if (alpn_in) {
1768	alpn_ctx.data = next_protos_parse(&alpn_ctx.len, alpn_in);
1769	if (alpn_ctx.data == NULL)
1770	goto end;
1771	}
1772
1773	if (crl_file != NULL) {
1774	X509_CRL *crl;
1775	crl = load_crl(crl_file, crl_format, 0, "CRL");
1776	if (crl == NULL)
1777	goto end;
1778	crls = sk_X509_CRL_new_null();
1779	if (crls == NULL \|\| !sk_X509_CRL_push(crls, crl)) {
1780	BIO_puts(bio_err, "Error adding CRL\n");
1781	ERR_print_errors(bio_err);
1782	X509_CRL_free(crl);
1783	goto end;
1784	}
1785	}
1786
1787	if (s_dcert_file != NULL) {
1788
1789	if (s_dkey_file == NULL)
1790	s_dkey_file = s_dcert_file;
1791
1792	s_dkey = load_key(s_dkey_file, s_dkey_format,
1793	0, dpass, engine, "second certificate private key");
1794	if (s_dkey == NULL)
1795	goto end;
1796
1797	s_dcert = load_cert_pass(s_dcert_file, s_dcert_format, 1, dpass,
1798	"second server certificate");
1799
1800	if (s_dcert == NULL) {
1801	ERR_print_errors(bio_err);
1802	goto end;
1803	}
1804	if (s_dchain_file != NULL) {
1805	if (!load_certs(s_dchain_file, 0, &s_dchain, NULL,
1806	"second server certificate chain"))
1807	goto end;
1808	}
1809
1810	}
1811
1812	if (bio_s_out == NULL) {
1813	if (s_quiet && !s_debug) {
1814	bio_s_out = BIO_new(BIO_s_null());
1815	if (s_msg && bio_s_msg == NULL) {
1816	bio_s_msg = dup_bio_out(FORMAT_TEXT);
1817	if (bio_s_msg == NULL) {
1818	BIO_printf(bio_err, "Out of memory\n");
1819	goto end;
1820	}
1821	}
1822	} else {
1823	bio_s_out = dup_bio_out(FORMAT_TEXT);
1824	}
1825	}
1826
1827	if (bio_s_out == NULL)
1828	goto end;
1829
1830	if (nocert) {
1831	s_cert_file = NULL;
1832	s_key_file = NULL;
1833	s_dcert_file = NULL;
1834	s_dkey_file = NULL;
1835	s_cert_file2 = NULL;
1836	s_key_file2 = NULL;
1837	}
1838
1839	ctx = SSL_CTX_new_ex(app_get0_libctx(), app_get0_propq(), meth);
1840	if (ctx == NULL) {
1841	ERR_print_errors(bio_err);
1842	goto end;
1843	}
1844
1845	SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY);
1846
1847	if (sdebug)
1848	ssl_ctx_security_debug(ctx, sdebug);
1849
1850	if (!config_ctx(cctx, ssl_args, ctx))
1851	goto end;
1852
1853	if (ssl_config) {
1854	if (SSL_CTX_config(ctx, ssl_config) == 0) {
1855	BIO_printf(bio_err, "Error using configuration \"%s\"\n",
1856	ssl_config);
1857	ERR_print_errors(bio_err);
1858	goto end;
1859	}
1860	}
1861	#ifndef OPENSSL_NO_SCTP
1862	if (protocol == IPPROTO_SCTP && sctp_label_bug == 1)
1863	SSL_CTX_set_mode(ctx, SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG);
1864	#endif
1865
1866	if (min_version != 0
1867	&& SSL_CTX_set_min_proto_version(ctx, min_version) == 0)
1868	goto end;
1869	if (max_version != 0
1870	&& SSL_CTX_set_max_proto_version(ctx, max_version) == 0)
1871	goto end;
1872
1873	if (session_id_prefix) {
1874	if (strlen(session_id_prefix) >= 32)
1875	BIO_printf(bio_err,
1876	"warning: id_prefix is too long, only one new session will be possible\n");
1877	if (!SSL_CTX_set_generate_session_id(ctx, generate_session_id)) {
1878	BIO_printf(bio_err, "error setting 'id_prefix'\n");
1879	ERR_print_errors(bio_err);
1880	goto end;
1881	}
1882	BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
1883	}
1884	if (exc != NULL)
1885	ssl_ctx_set_excert(ctx, exc);
1886
1887	if (state)
1888	SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
1889	if (no_cache)
1890	SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
1891	else if (ext_cache)
1892	init_session_cache_ctx(ctx);
1893	else
1894	SSL_CTX_sess_set_cache_size(ctx, 128);
1895
1896	if (async) {
1897	SSL_CTX_set_mode(ctx, SSL_MODE_ASYNC);
1898	}
1899
1900	if (no_ca_names) {
1901	SSL_CTX_set_options(ctx, SSL_OP_DISABLE_TLSEXT_CA_NAMES);
1902	}
1903
1904	if (ignore_unexpected_eof)
1905	SSL_CTX_set_options(ctx, SSL_OP_IGNORE_UNEXPECTED_EOF);
1906
1907	if (max_send_fragment > 0
1908	&& !SSL_CTX_set_max_send_fragment(ctx, max_send_fragment)) {
1909	BIO_printf(bio_err, "%s: Max send fragment size %u is out of permitted range\n",
1910	prog, max_send_fragment);
1911	goto end;
1912	}
1913
1914	if (split_send_fragment > 0
1915	&& !SSL_CTX_set_split_send_fragment(ctx, split_send_fragment)) {
1916	BIO_printf(bio_err, "%s: Split send fragment size %u is out of permitted range\n",
1917	prog, split_send_fragment);
1918	goto end;
1919	}
1920	if (max_pipelines > 0
1921	&& !SSL_CTX_set_max_pipelines(ctx, max_pipelines)) {
1922	BIO_printf(bio_err, "%s: Max pipelines %u is out of permitted range\n",
1923	prog, max_pipelines);
1924	goto end;
1925	}
1926
1927	if (read_buf_len > 0) {
1928	SSL_CTX_set_default_read_buffer_len(ctx, read_buf_len);
1929	}
1930	#ifndef OPENSSL_NO_SRTP
1931	if (srtp_profiles != NULL) {
1932	/* Returns 0 on success! */
1933	if (SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles) != 0) {
1934	BIO_printf(bio_err, "Error setting SRTP profile\n");
1935	ERR_print_errors(bio_err);
1936	goto end;
1937	}
1938	}
1939	#endif
1940
1941	if (!ctx_set_verify_locations(ctx, CAfile, noCAfile, CApath, noCApath,
1942	CAstore, noCAstore)) {
1943	ERR_print_errors(bio_err);
1944	goto end;
1945	}
1946	if (vpmtouched && !SSL_CTX_set1_param(ctx, vpm)) {
1947	BIO_printf(bio_err, "Error setting verify params\n");
1948	ERR_print_errors(bio_err);
1949	goto end;
1950	}
1951
1952	ssl_ctx_add_crls(ctx, crls, 0);
1953
1954	if (!ssl_load_stores(ctx,
1955	vfyCApath, vfyCAfile, vfyCAstore,
1956	chCApath, chCAfile, chCAstore,
1957	crls, crl_download)) {
1958	BIO_printf(bio_err, "Error loading store locations\n");
1959	ERR_print_errors(bio_err);
1960	goto end;
1961	}
1962
1963	if (s_cert2) {
1964	ctx2 = SSL_CTX_new_ex(app_get0_libctx(), app_get0_propq(), meth);
1965	if (ctx2 == NULL) {
1966	ERR_print_errors(bio_err);
1967	goto end;
1968	}
1969	}
1970
1971	if (ctx2 != NULL) {
1972	BIO_printf(bio_s_out, "Setting secondary ctx parameters\n");
1973
1974	if (sdebug)
1975	ssl_ctx_security_debug(ctx2, sdebug);
1976
1977	if (session_id_prefix) {
1978	if (strlen(session_id_prefix) >= 32)
1979	BIO_printf(bio_err,
1980	"warning: id_prefix is too long, only one new session will be possible\n");
1981	if (!SSL_CTX_set_generate_session_id(ctx2, generate_session_id)) {
1982	BIO_printf(bio_err, "error setting 'id_prefix'\n");
1983	ERR_print_errors(bio_err);
1984	goto end;
1985	}
1986	BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
1987	}
1988	if (exc != NULL)
1989	ssl_ctx_set_excert(ctx2, exc);
1990
1991	if (state)
1992	SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback);
1993
1994	if (no_cache)
1995	SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF);
1996	else if (ext_cache)
1997	init_session_cache_ctx(ctx2);
1998	else
1999	SSL_CTX_sess_set_cache_size(ctx2, 128);
2000
2001	if (async)
2002	SSL_CTX_set_mode(ctx2, SSL_MODE_ASYNC);
2003
2004	if (!ctx_set_verify_locations(ctx2, CAfile, noCAfile, CApath,
2005	noCApath, CAstore, noCAstore)) {
2006	ERR_print_errors(bio_err);
2007	goto end;
2008	}
2009	if (vpmtouched && !SSL_CTX_set1_param(ctx2, vpm)) {
2010	BIO_printf(bio_err, "Error setting verify params\n");
2011	ERR_print_errors(bio_err);
2012	goto end;
2013	}
2014
2015	ssl_ctx_add_crls(ctx2, crls, 0);
2016	if (!config_ctx(cctx, ssl_args, ctx2))
2017	goto end;
2018	}
2019	#ifndef OPENSSL_NO_NEXTPROTONEG
2020	if (next_proto.data)
2021	SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb,
2022	&next_proto);
2023	#endif
2024	if (alpn_ctx.data)
2025	SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx);
2026
2027	if (!no_dhe) {
2028	EVP_PKEY *dhpkey = NULL;
2029
2030	if (dhfile != NULL)
2031	dhpkey = load_keyparams(dhfile, FORMAT_UNDEF, 0, "DH", "DH parameters");
2032	else if (s_cert_file != NULL)
2033	dhpkey = load_keyparams_suppress(s_cert_file, FORMAT_UNDEF, 0, "DH",
2034	"DH parameters", 1);
2035
2036	if (dhpkey != NULL) {
2037	BIO_printf(bio_s_out, "Setting temp DH parameters\n");
2038	} else {
2039	BIO_printf(bio_s_out, "Using default temp DH parameters\n");
2040	}
2041	(void)BIO_flush(bio_s_out);
2042
2043	if (dhpkey == NULL) {
2044	SSL_CTX_set_dh_auto(ctx, 1);
2045	} else {
2046	/*
2047	* We need 2 references: one for use by ctx and one for use by
2048	* ctx2
2049	*/
2050	if (!EVP_PKEY_up_ref(dhpkey)) {
2051	EVP_PKEY_free(dhpkey);
2052	goto end;
2053	}
2054	if (!SSL_CTX_set0_tmp_dh_pkey(ctx, dhpkey)) {
2055	BIO_puts(bio_err, "Error setting temp DH parameters\n");
2056	ERR_print_errors(bio_err);
2057	/* Free 2 references */
2058	EVP_PKEY_free(dhpkey);
2059	EVP_PKEY_free(dhpkey);
2060	goto end;
2061	}
2062	}
2063
2064	if (ctx2 != NULL) {
2065	if (dhfile != NULL) {
2066	EVP_PKEY *dhpkey2 = load_keyparams_suppress(s_cert_file2,
2067	FORMAT_UNDEF,
2068	0, "DH",
2069	"DH parameters", 1);
2070
2071	if (dhpkey2 != NULL) {
2072	BIO_printf(bio_s_out, "Setting temp DH parameters\n");
2073	(void)BIO_flush(bio_s_out);
2074
2075	EVP_PKEY_free(dhpkey);
2076	dhpkey = dhpkey2;
2077	}
2078	}
2079	if (dhpkey == NULL) {
2080	SSL_CTX_set_dh_auto(ctx2, 1);
2081	} else if (!SSL_CTX_set0_tmp_dh_pkey(ctx2, dhpkey)) {
2082	BIO_puts(bio_err, "Error setting temp DH parameters\n");
2083	ERR_print_errors(bio_err);
2084	EVP_PKEY_free(dhpkey);
2085	goto end;
2086	}
2087	dhpkey = NULL;
2088	}
2089	EVP_PKEY_free(dhpkey);
2090	}
2091
2092	if (!set_cert_key_stuff(ctx, s_cert, s_key, s_chain, build_chain))
2093	goto end;
2094
2095	if (s_serverinfo_file != NULL
2096	&& !SSL_CTX_use_serverinfo_file(ctx, s_serverinfo_file)) {
2097	ERR_print_errors(bio_err);
2098	goto end;
2099	}
2100
2101	if (ctx2 != NULL
2102	&& !set_cert_key_stuff(ctx2, s_cert2, s_key2, NULL, build_chain))
2103	goto end;
2104
2105	if (s_dcert != NULL) {
2106	if (!set_cert_key_stuff(ctx, s_dcert, s_dkey, s_dchain, build_chain))
2107	goto end;
2108	}
2109
2110	if (no_resume_ephemeral) {
2111	SSL_CTX_set_not_resumable_session_callback(ctx,
2112	not_resumable_sess_cb);
2113
2114	if (ctx2 != NULL)
2115	SSL_CTX_set_not_resumable_session_callback(ctx2,
2116	not_resumable_sess_cb);
2117	}
2118	#ifndef OPENSSL_NO_PSK
2119	if (psk_key != NULL) {
2120	if (s_debug)
2121	BIO_printf(bio_s_out, "PSK key given, setting server callback\n");
2122	SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
2123	}
2124
2125	if (psk_identity_hint != NULL) {
2126	if (min_version == TLS1_3_VERSION) {
2127	BIO_printf(bio_s_out, "PSK warning: there is NO identity hint in TLSv1.3\n");
2128	} else {
2129	if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint)) {
2130	BIO_printf(bio_err, "error setting PSK identity hint to context\n");
2131	ERR_print_errors(bio_err);
2132	goto end;
2133	}
2134	}
2135	}
2136	#endif
2137	if (psksessf != NULL) {
2138	BIO *stmp = BIO_new_file(psksessf, "r");
2139
2140	if (stmp == NULL) {
2141	BIO_printf(bio_err, "Can't open PSK session file %s\n", psksessf);
2142	ERR_print_errors(bio_err);
2143	goto end;
2144	}
2145	psksess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
2146	BIO_free(stmp);
2147	if (psksess == NULL) {
2148	BIO_printf(bio_err, "Can't read PSK session file %s\n", psksessf);
2149	ERR_print_errors(bio_err);
2150	goto end;
2151	}
2152
2153	}
2154
2155	if (psk_key != NULL \|\| psksess != NULL)
2156	SSL_CTX_set_psk_find_session_callback(ctx, psk_find_session_cb);
2157
2158	SSL_CTX_set_verify(ctx, s_server_verify, verify_callback);
2159	if (!SSL_CTX_set_session_id_context(ctx,
2160	(void *)&s_server_session_id_context,
2161	sizeof(s_server_session_id_context))) {
2162	BIO_printf(bio_err, "error setting session id context\n");
2163	ERR_print_errors(bio_err);
2164	goto end;
2165	}
2166
2167	/* Set DTLS cookie generation and verification callbacks */
2168	SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback);
2169	SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback);
2170
2171	/* Set TLS1.3 cookie generation and verification callbacks */
2172	SSL_CTX_set_stateless_cookie_generate_cb(ctx, generate_stateless_cookie_callback);
2173	SSL_CTX_set_stateless_cookie_verify_cb(ctx, verify_stateless_cookie_callback);
2174
2175	if (ctx2 != NULL) {
2176	SSL_CTX_set_verify(ctx2, s_server_verify, verify_callback);
2177	if (!SSL_CTX_set_session_id_context(ctx2,
2178	(void *)&s_server_session_id_context,
2179	sizeof(s_server_session_id_context))) {
2180	BIO_printf(bio_err, "error setting session id context\n");
2181	ERR_print_errors(bio_err);
2182	goto end;
2183	}
2184	tlsextcbp.biodebug = bio_s_out;
2185	SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
2186	SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
2187	SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
2188	SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
2189	}
2190
2191	#ifndef OPENSSL_NO_SRP
2192	if (srp_verifier_file != NULL) {
2193	if (!set_up_srp_verifier_file(ctx, &srp_callback_parm, srpuserseed,
2194	srp_verifier_file))
2195	goto end;
2196	} else
2197	#endif
2198	if (CAfile != NULL) {
2199	SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(CAfile));
2200
2201	if (ctx2)
2202	SSL_CTX_set_client_CA_list(ctx2, SSL_load_client_CA_file(CAfile));
2203	}
2204	#ifndef OPENSSL_NO_OCSP
2205	if (s_tlsextstatus) {
2206	SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
2207	SSL_CTX_set_tlsext_status_arg(ctx, &tlscstatp);
2208	if (ctx2) {
2209	SSL_CTX_set_tlsext_status_cb(ctx2, cert_status_cb);
2210	SSL_CTX_set_tlsext_status_arg(ctx2, &tlscstatp);
2211	}
2212	}
2213	#endif
2214	if (set_keylog_file(ctx, keylog_file))
2215	goto end;
2216
2217	if (max_early_data >= 0)
2218	SSL_CTX_set_max_early_data(ctx, max_early_data);
2219	if (recv_max_early_data >= 0)
2220	SSL_CTX_set_recv_max_early_data(ctx, recv_max_early_data);
2221
2222	if (rev)
2223	server_cb = rev_body;
2224	else if (www)
2225	server_cb = www_body;
2226	else
2227	server_cb = sv_body;
2228	#ifdef AF_UNIX
2229	if (socket_family == AF_UNIX
2230	&& unlink_unix_path)
2231	unlink(host);
2232	#endif
2233	do_server(&accept_socket, host, port, socket_family, socket_type, protocol,
2234	server_cb, context, naccept, bio_s_out);
2235	print_stats(bio_s_out, ctx);
2236	ret = 0;
2237	end:
2238	SSL_CTX_free(ctx);
2239	SSL_SESSION_free(psksess);
2240	set_keylog_file(NULL, NULL);
2241	X509_free(s_cert);
2242	sk_X509_CRL_pop_free(crls, X509_CRL_free);
2243	X509_free(s_dcert);
2244	EVP_PKEY_free(s_key);
2245	EVP_PKEY_free(s_dkey);
2246	sk_X509_pop_free(s_chain, X509_free);
2247	sk_X509_pop_free(s_dchain, X509_free);
2248	OPENSSL_free(pass);
2249	OPENSSL_free(dpass);
2250	OPENSSL_free(host);
2251	OPENSSL_free(port);
2252	X509_VERIFY_PARAM_free(vpm);
2253	free_sessions();
2254	OPENSSL_free(tlscstatp.host);
2255	OPENSSL_free(tlscstatp.port);
2256	OPENSSL_free(tlscstatp.path);
2257	SSL_CTX_free(ctx2);
2258	X509_free(s_cert2);
2259	EVP_PKEY_free(s_key2);
2260	#ifndef OPENSSL_NO_NEXTPROTONEG
2261	OPENSSL_free(next_proto.data);
2262	#endif
2263	OPENSSL_free(alpn_ctx.data);
2264	ssl_excert_free(exc);
2265	sk_OPENSSL_STRING_free(ssl_args);
2266	SSL_CONF_CTX_free(cctx);
2267	release_engine(engine);
2268	BIO_free(bio_s_out);
2269	bio_s_out = NULL;
2270	BIO_free(bio_s_msg);
2271	bio_s_msg = NULL;
2272	#ifdef CHARSET_EBCDIC
2273	BIO_meth_free(methods_ebcdic);
2274	#endif
2275	return ret;
2276	}
2277
2278	static void print_stats(BIO bio, SSL_CTX ssl_ctx)
2279	{
2280	BIO_printf(bio, "%4ld items in the session cache\n",
2281	SSL_CTX_sess_number(ssl_ctx));
2282	BIO_printf(bio, "%4ld client connects (SSL_connect())\n",
2283	SSL_CTX_sess_connect(ssl_ctx));
2284	BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n",
2285	SSL_CTX_sess_connect_renegotiate(ssl_ctx));
2286	BIO_printf(bio, "%4ld client connects that finished\n",
2287	SSL_CTX_sess_connect_good(ssl_ctx));
2288	BIO_printf(bio, "%4ld server accepts (SSL_accept())\n",
2289	SSL_CTX_sess_accept(ssl_ctx));
2290	BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n",
2291	SSL_CTX_sess_accept_renegotiate(ssl_ctx));
2292	BIO_printf(bio, "%4ld server accepts that finished\n",
2293	SSL_CTX_sess_accept_good(ssl_ctx));
2294	BIO_printf(bio, "%4ld session cache hits\n", SSL_CTX_sess_hits(ssl_ctx));
2295	BIO_printf(bio, "%4ld session cache misses\n",
2296	SSL_CTX_sess_misses(ssl_ctx));
2297	BIO_printf(bio, "%4ld session cache timeouts\n",
2298	SSL_CTX_sess_timeouts(ssl_ctx));
2299	BIO_printf(bio, "%4ld callback cache hits\n",
2300	SSL_CTX_sess_cb_hits(ssl_ctx));
2301	BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n",
2302	SSL_CTX_sess_cache_full(ssl_ctx),
2303	SSL_CTX_sess_get_cache_size(ssl_ctx));
2304	}
2305
2306	static long int count_reads_callback(BIO bio, int cmd, const char argp, size_t len,
2307	int argi, long argl, int ret, size_t *processed)
2308	{
2309	unsigned int p_counter = (unsigned int )BIO_get_callback_arg(bio);
2310
2311	switch (cmd) {
2312	case BIO_CB_READ: /* No break here */
2313	case BIO_CB_GETS:
2314	if (p_counter != NULL)
2315	++*p_counter;
2316	break;
2317	default:
2318	break;
2319	}
2320
2321	if (s_debug) {
2322	BIO_set_callback_arg(bio, (char *)bio_s_out);
2323	ret = (int)bio_dump_callback(bio, cmd, argp, len, argi, argl, ret, processed);
2324	BIO_set_callback_arg(bio, (char *)p_counter);
2325	}
2326
2327	return ret;
2328	}
2329
2330	static int sv_body(int s, int stype, int prot, unsigned char *context)
2331	{
2332	char *buf = NULL;
2333	fd_set readfds;
2334	int ret = 1, width;
2335	int k, i;
2336	unsigned long l;
2337	SSL *con = NULL;
2338	BIO *sbio;
2339	struct timeval timeout;
2340	#if !(defined(OPENSSL_SYS_WINDOWS) \|\| defined(OPENSSL_SYS_MSDOS))
2341	struct timeval *timeoutp;
2342	#endif
2343	#ifndef OPENSSL_NO_DTLS
2344	# ifndef OPENSSL_NO_SCTP
2345	int isdtls = (stype == SOCK_DGRAM \|\| prot == IPPROTO_SCTP);
2346	# else
2347	int isdtls = (stype == SOCK_DGRAM);
2348	# endif
2349	#endif
2350
2351	buf = app_malloc(bufsize, "server buffer");
2352	if (s_nbio) {
2353	if (!BIO_socket_nbio(s, 1))
2354	ERR_print_errors(bio_err);
2355	else if (!s_quiet)
2356	BIO_printf(bio_err, "Turned on non blocking io\n");
2357	}
2358
2359	con = SSL_new(ctx);
2360	if (con == NULL) {
2361	ret = -1;
2362	goto err;
2363	}
2364
2365	if (s_tlsextdebug) {
2366	SSL_set_tlsext_debug_callback(con, tlsext_cb);
2367	SSL_set_tlsext_debug_arg(con, bio_s_out);
2368	}
2369
2370	if (context != NULL
2371	&& !SSL_set_session_id_context(con, context,
2372	strlen((char *)context))) {
2373	BIO_printf(bio_err, "Error setting session id context\n");
2374	ret = -1;
2375	goto err;
2376	}
2377
2378	if (!SSL_clear(con)) {
2379	BIO_printf(bio_err, "Error clearing SSL connection\n");
2380	ret = -1;
2381	goto err;
2382	}
2383	#ifndef OPENSSL_NO_DTLS
2384	if (isdtls) {
2385	# ifndef OPENSSL_NO_SCTP
2386	if (prot == IPPROTO_SCTP)
2387	sbio = BIO_new_dgram_sctp(s, BIO_NOCLOSE);
2388	else
2389	# endif
2390	sbio = BIO_new_dgram(s, BIO_NOCLOSE);
2391	if (sbio == NULL) {
2392	BIO_printf(bio_err, "Unable to create BIO\n");
2393	ERR_print_errors(bio_err);
2394	goto err;
2395	}
2396
2397	if (enable_timeouts) {
2398	timeout.tv_sec = 0;
2399	timeout.tv_usec = DGRAM_RCV_TIMEOUT;
2400	BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
2401
2402	timeout.tv_sec = 0;
2403	timeout.tv_usec = DGRAM_SND_TIMEOUT;
2404	BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
2405	}
2406
2407	if (socket_mtu) {
2408	if (socket_mtu < DTLS_get_link_min_mtu(con)) {
2409	BIO_printf(bio_err, "MTU too small. Must be at least %ld\n",
2410	DTLS_get_link_min_mtu(con));
2411	ret = -1;
2412	BIO_free(sbio);
2413	goto err;
2414	}
2415	SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
2416	if (!DTLS_set_link_mtu(con, socket_mtu)) {
2417	BIO_printf(bio_err, "Failed to set MTU\n");
2418	ret = -1;
2419	BIO_free(sbio);
2420	goto err;
2421	}
2422	} else
2423	/* want to do MTU discovery */
2424	BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
2425
2426	# ifndef OPENSSL_NO_SCTP
2427	if (prot != IPPROTO_SCTP)
2428	# endif
2429	/* Turn on cookie exchange. Not necessary for SCTP */
2430	SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
2431	} else
2432	#endif
2433	sbio = BIO_new_socket(s, BIO_NOCLOSE);
2434
2435	if (sbio == NULL) {
2436	BIO_printf(bio_err, "Unable to create BIO\n");
2437	ERR_print_errors(bio_err);
2438	goto err;
2439	}
2440
2441	if (s_nbio_test) {
2442	BIO *test;
2443
2444	test = BIO_new(BIO_f_nbio_test());
2445	if (test == NULL) {
2446	BIO_printf(bio_err, "Unable to create BIO\n");
2447	ret = -1;
2448	BIO_free(sbio);
2449	goto err;
2450	}
2451
2452	sbio = BIO_push(test, sbio);
2453	}
2454
2455	SSL_set_bio(con, sbio, sbio);
2456	SSL_set_accept_state(con);
2457	/* SSL_set_fd(con,s); */
2458
2459	BIO_set_callback_ex(SSL_get_rbio(con), count_reads_callback);
2460	if (s_msg) {
2461	#ifndef OPENSSL_NO_SSL_TRACE
2462	if (s_msg == 2)
2463	SSL_set_msg_callback(con, SSL_trace);
2464	else
2465	#endif
2466	SSL_set_msg_callback(con, msg_cb);
2467	SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
2468	}
2469
2470	if (s_tlsextdebug) {
2471	SSL_set_tlsext_debug_callback(con, tlsext_cb);
2472	SSL_set_tlsext_debug_arg(con, bio_s_out);
2473	}
2474
2475	if (early_data) {
2476	int write_header = 1, edret = SSL_READ_EARLY_DATA_ERROR;
2477	size_t readbytes;
2478
2479	while (edret != SSL_READ_EARLY_DATA_FINISH) {
2480	for (;;) {
2481	edret = SSL_read_early_data(con, buf, bufsize, &readbytes);
2482	if (edret != SSL_READ_EARLY_DATA_ERROR)
2483	break;
2484
2485	switch (SSL_get_error(con, 0)) {
2486	case SSL_ERROR_WANT_WRITE:
2487	case SSL_ERROR_WANT_ASYNC:
2488	case SSL_ERROR_WANT_READ:
2489	/* Just keep trying - busy waiting */
2490	continue;
2491	default:
2492	BIO_printf(bio_err, "Error reading early data\n");
2493	ERR_print_errors(bio_err);
2494	goto err;
2495	}
2496	}
2497	if (readbytes > 0) {
2498	if (write_header) {
2499	BIO_printf(bio_s_out, "Early data received:\n");
2500	write_header = 0;
2501	}
2502	raw_write_stdout(buf, (unsigned int)readbytes);
2503	(void)BIO_flush(bio_s_out);
2504	}
2505	}
2506	if (write_header) {
2507	if (SSL_get_early_data_status(con) == SSL_EARLY_DATA_NOT_SENT)
2508	BIO_printf(bio_s_out, "No early data received\n");
2509	else
2510	BIO_printf(bio_s_out, "Early data was rejected\n");
2511	} else {
2512	BIO_printf(bio_s_out, "\nEnd of early data\n");
2513	}
2514	if (SSL_is_init_finished(con))
2515	print_connection_info(con);
2516	}
2517
2518	if (fileno_stdin() > s)
2519	width = fileno_stdin() + 1;
2520	else
2521	width = s + 1;
2522	for (;;) {
2523	int read_from_terminal;
2524	int read_from_sslcon;
2525
2526	read_from_terminal = 0;
2527	read_from_sslcon = SSL_has_pending(con)
2528	\|\| (async && SSL_waiting_for_async(con));
2529
2530	if (!read_from_sslcon) {
2531	FD_ZERO(&readfds);
2532	#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
2533	openssl_fdset(fileno_stdin(), &readfds);
2534	#endif
2535	openssl_fdset(s, &readfds);
2536	/*
2537	* Note: under VMS with SOCKETSHR the second parameter is
2538	* currently of type (int *) whereas under other systems it is
2539	* (void *) if you don't have a cast it will choke the compiler:
2540	* if you do have a cast then you can either go for (int *) or
2541	* (void *).
2542	*/
2543	#if defined(OPENSSL_SYS_WINDOWS) \|\| defined(OPENSSL_SYS_MSDOS)
2544	/*
2545	* Under DOS (non-djgpp) and Windows we can't select on stdin:
2546	* only on sockets. As a workaround we timeout the select every
2547	* second and check for any keypress. In a proper Windows
2548	* application we wouldn't do this because it is inefficient.
2549	*/
2550	timeout.tv_sec = 1;
2551	timeout.tv_usec = 0;
2552	i = select(width, (void *)&readfds, NULL, NULL, &timeout);
2553	if (has_stdin_waiting())
2554	read_from_terminal = 1;
2555	if ((i < 0) \|\| (!i && !read_from_terminal))
2556	continue;
2557	#else
2558	if (SSL_is_dtls(con) && DTLSv1_get_timeout(con, &timeout))
2559	timeoutp = &timeout;
2560	else
2561	timeoutp = NULL;
2562
2563	i = select(width, (void *)&readfds, NULL, NULL, timeoutp);
2564
2565	if ((SSL_is_dtls(con)) && DTLSv1_handle_timeout(con) > 0)
2566	BIO_printf(bio_err, "TIMEOUT occurred\n");
2567
2568	if (i <= 0)
2569	continue;
2570	if (FD_ISSET(fileno_stdin(), &readfds))
2571	read_from_terminal = 1;
2572	#endif
2573	if (FD_ISSET(s, &readfds))
2574	read_from_sslcon = 1;
2575	}
2576	if (read_from_terminal) {
2577	if (s_crlf) {
2578	int j, lf_num;
2579
2580	i = raw_read_stdin(buf, bufsize / 2);
2581	lf_num = 0;
2582	/* both loops are skipped when i <= 0 */
2583	for (j = 0; j < i; j++)
2584	if (buf[j] == '\n')
2585	lf_num++;
2586	for (j = i - 1; j >= 0; j--) {
2587	buf[j + lf_num] = buf[j];
2588	if (buf[j] == '\n') {
2589	lf_num--;
2590	i++;
2591	buf[j + lf_num] = '\r';
2592	}
2593	}
2594	assert(lf_num == 0);
2595	} else {
2596	i = raw_read_stdin(buf, bufsize);
2597	}
2598
2599	if (!s_quiet && !s_brief) {
2600	if ((i <= 0) \|\| (buf[0] == 'Q')) {
2601	BIO_printf(bio_s_out, "DONE\n");
2602	(void)BIO_flush(bio_s_out);
2603	BIO_closesocket(s);
2604	close_accept_socket();
2605	ret = -11;
2606	goto err;
2607	}
2608	if ((i <= 0) \|\| (buf[0] == 'q')) {
2609	BIO_printf(bio_s_out, "DONE\n");
2610	(void)BIO_flush(bio_s_out);
2611	if (SSL_version(con) != DTLS1_VERSION)
2612	BIO_closesocket(s);
2613	/*
2614	* close_accept_socket(); ret= -11;
2615	*/
2616	goto err;
2617	}
2618	if ((buf[0] == 'r') && ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2619	SSL_renegotiate(con);
2620	i = SSL_do_handshake(con);
2621	printf("SSL_do_handshake -> %d\n", i);
2622	i = 0; /* 13; */
2623	continue;
2624	}
2625	if ((buf[0] == 'R') && ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2626	SSL_set_verify(con,
2627	SSL_VERIFY_PEER \| SSL_VERIFY_CLIENT_ONCE,
2628	NULL);
2629	SSL_renegotiate(con);
2630	i = SSL_do_handshake(con);
2631	printf("SSL_do_handshake -> %d\n", i);
2632	i = 0; /* 13; */
2633	continue;
2634	}
2635	if ((buf[0] == 'K' \|\| buf[0] == 'k')
2636	&& ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2637	SSL_key_update(con, buf[0] == 'K' ?
2638	SSL_KEY_UPDATE_REQUESTED
2639	: SSL_KEY_UPDATE_NOT_REQUESTED);
2640	i = SSL_do_handshake(con);
2641	printf("SSL_do_handshake -> %d\n", i);
2642	i = 0;
2643	continue;
2644	}
2645	if (buf[0] == 'c' && ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2646	SSL_set_verify(con, SSL_VERIFY_PEER, NULL);
2647	i = SSL_verify_client_post_handshake(con);
2648	if (i == 0) {
2649	printf("Failed to initiate request\n");
2650	ERR_print_errors(bio_err);
2651	} else {
2652	i = SSL_do_handshake(con);
2653	printf("SSL_do_handshake -> %d\n", i);
2654	i = 0;
2655	}
2656	continue;
2657	}
2658	if (buf[0] == 'P') {
2659	static const char str[] = "Lets print some clear text\n";
2660	BIO_write(SSL_get_wbio(con), str, sizeof(str) -1);
2661	}
2662	if (buf[0] == 'S') {
2663	print_stats(bio_s_out, SSL_get_SSL_CTX(con));
2664	}
2665	}
2666	#ifdef CHARSET_EBCDIC
2667	ebcdic2ascii(buf, buf, i);
2668	#endif
2669	l = k = 0;
2670	for (;;) {
2671	/* should do a select for the write */
2672	#ifdef RENEG
2673	static count = 0;
2674	if (++count == 100) {
2675	count = 0;
2676	SSL_renegotiate(con);
2677	}
2678	#endif
2679	k = SSL_write(con, &(buf[l]), (unsigned int)i);
2680	#ifndef OPENSSL_NO_SRP
2681	while (SSL_get_error(con, k) == SSL_ERROR_WANT_X509_LOOKUP) {
2682	BIO_printf(bio_s_out, "LOOKUP renego during write\n");
2683
2684	lookup_srp_user(&srp_callback_parm, bio_s_out);
2685
2686	k = SSL_write(con, &(buf[l]), (unsigned int)i);
2687	}
2688	#endif
2689	switch (SSL_get_error(con, k)) {
2690	case SSL_ERROR_NONE:
2691	break;
2692	case SSL_ERROR_WANT_ASYNC:
2693	BIO_printf(bio_s_out, "Write BLOCK (Async)\n");
2694	(void)BIO_flush(bio_s_out);
2695	wait_for_async(con);
2696	break;
2697	case SSL_ERROR_WANT_WRITE:
2698	case SSL_ERROR_WANT_READ:
2699	case SSL_ERROR_WANT_X509_LOOKUP:
2700	BIO_printf(bio_s_out, "Write BLOCK\n");
2701	(void)BIO_flush(bio_s_out);
2702	break;
2703	case SSL_ERROR_WANT_ASYNC_JOB:
2704	/*
2705	* This shouldn't ever happen in s_server. Treat as an error
2706	*/
2707	case SSL_ERROR_SYSCALL:
2708	case SSL_ERROR_SSL:
2709	BIO_printf(bio_s_out, "ERROR\n");
2710	(void)BIO_flush(bio_s_out);
2711	ERR_print_errors(bio_err);
2712	ret = 1;
2713	goto err;
2714	/* break; */
2715	case SSL_ERROR_ZERO_RETURN:
2716	BIO_printf(bio_s_out, "DONE\n");
2717	(void)BIO_flush(bio_s_out);
2718	ret = 1;
2719	goto err;
2720	}
2721	if (k > 0) {
2722	l += k;
2723	i -= k;
2724	}
2725	if (i <= 0)
2726	break;
2727	}
2728	}
2729	if (read_from_sslcon) {
2730	/*
2731	* init_ssl_connection handles all async events itself so if we're
2732	* waiting for async then we shouldn't go back into
2733	* init_ssl_connection
2734	*/
2735	if ((!async \|\| !SSL_waiting_for_async(con))
2736	&& !SSL_is_init_finished(con)) {
2737	/*
2738	* Count number of reads during init_ssl_connection.
2739	* It helps us to distinguish configuration errors from errors
2740	* caused by a client.
2741	*/
2742	unsigned int read_counter = 0;
2743
2744	BIO_set_callback_arg(SSL_get_rbio(con), (char *)&read_counter);
2745	i = init_ssl_connection(con);
2746	BIO_set_callback_arg(SSL_get_rbio(con), NULL);
2747
2748	/*
2749	* If initialization fails without reads, then
2750	* there was a fatal error in configuration.
2751	*/
2752	if (i <= 0 && read_counter == 0) {
2753	ret = -1;
2754	goto err;
2755	}
2756	if (i < 0) {
2757	ret = 0;
2758	goto err;
2759	} else if (i == 0) {
2760	ret = 1;
2761	goto err;
2762	}
2763	} else {
2764	again:
2765	i = SSL_read(con, (char *)buf, bufsize);
2766	#ifndef OPENSSL_NO_SRP
2767	while (SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
2768	BIO_printf(bio_s_out, "LOOKUP renego during read\n");
2769
2770	lookup_srp_user(&srp_callback_parm, bio_s_out);
2771
2772	i = SSL_read(con, (char *)buf, bufsize);
2773	}
2774	#endif
2775	switch (SSL_get_error(con, i)) {
2776	case SSL_ERROR_NONE:
2777	#ifdef CHARSET_EBCDIC
2778	ascii2ebcdic(buf, buf, i);
2779	#endif
2780	raw_write_stdout(buf, (unsigned int)i);
2781	(void)BIO_flush(bio_s_out);
2782	if (SSL_has_pending(con))
2783	goto again;
2784	break;
2785	case SSL_ERROR_WANT_ASYNC:
2786	BIO_printf(bio_s_out, "Read BLOCK (Async)\n");
2787	(void)BIO_flush(bio_s_out);
2788	wait_for_async(con);
2789	break;
2790	case SSL_ERROR_WANT_WRITE:
2791	case SSL_ERROR_WANT_READ:
2792	BIO_printf(bio_s_out, "Read BLOCK\n");
2793	(void)BIO_flush(bio_s_out);
2794	break;
2795	case SSL_ERROR_WANT_ASYNC_JOB:
2796	/*
2797	* This shouldn't ever happen in s_server. Treat as an error
2798	*/
2799	case SSL_ERROR_SYSCALL:
2800	case SSL_ERROR_SSL:
2801	BIO_printf(bio_s_out, "ERROR\n");
2802	(void)BIO_flush(bio_s_out);
2803	ERR_print_errors(bio_err);
2804	ret = 1;
2805	goto err;
2806	case SSL_ERROR_ZERO_RETURN:
2807	BIO_printf(bio_s_out, "DONE\n");
2808	(void)BIO_flush(bio_s_out);
2809	ret = 1;
2810	goto err;
2811	}
2812	}
2813	}
2814	}
2815	err:
2816	if (con != NULL) {
2817	BIO_printf(bio_s_out, "shutting down SSL\n");
2818	do_ssl_shutdown(con);
2819	SSL_free(con);
2820	}
2821	BIO_printf(bio_s_out, "CONNECTION CLOSED\n");
2822	OPENSSL_clear_free(buf, bufsize);
2823	return ret;
2824	}
2825
2826	static void close_accept_socket(void)
2827	{
2828	BIO_printf(bio_err, "shutdown accept socket\n");
2829	if (accept_socket >= 0) {
2830	BIO_closesocket(accept_socket);
2831	}
2832	}
2833
2834	static int is_retryable(SSL *con, int i)
2835	{
2836	int err = SSL_get_error(con, i);
2837
2838	/* If it's not a fatal error, it must be retryable */
2839	return (err != SSL_ERROR_SSL)
2840	&& (err != SSL_ERROR_SYSCALL)
2841	&& (err != SSL_ERROR_ZERO_RETURN);
2842	}
2843
2844	static int init_ssl_connection(SSL *con)
2845	{
2846	int i;
2847	long verify_err;
2848	int retry = 0;
2849
2850	if (dtlslisten \|\| stateless) {
2851	BIO_ADDR *client = NULL;
2852
2853	if (dtlslisten) {
2854	if ((client = BIO_ADDR_new()) == NULL) {
2855	BIO_printf(bio_err, "ERROR - memory\n");
2856	return 0;
2857	}
2858	i = DTLSv1_listen(con, client);
2859	} else {
2860	i = SSL_stateless(con);
2861	}
2862	if (i > 0) {
2863	BIO *wbio;
2864	int fd = -1;
2865
2866	if (dtlslisten) {
2867	wbio = SSL_get_wbio(con);
2868	if (wbio) {
2869	BIO_get_fd(wbio, &fd);
2870	}
2871
2872	if (!wbio \|\| BIO_connect(fd, client, 0) == 0) {
2873	BIO_printf(bio_err, "ERROR - unable to connect\n");
2874	BIO_ADDR_free(client);
2875	return 0;
2876	}
2877
2878	(void)BIO_ctrl_set_connected(wbio, client);
2879	BIO_ADDR_free(client);
2880	dtlslisten = 0;
2881	} else {
2882	stateless = 0;
2883	}
2884	i = SSL_accept(con);
2885	} else {
2886	BIO_ADDR_free(client);
2887	}
2888	} else {
2889	do {
2890	i = SSL_accept(con);
2891
2892	if (i <= 0)
2893	retry = is_retryable(con, i);
2894	#ifdef CERT_CB_TEST_RETRY
2895	{
2896	while (i <= 0
2897	&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP
2898	&& SSL_get_state(con) == TLS_ST_SR_CLNT_HELLO) {
2899	BIO_printf(bio_err,
2900	"LOOKUP from certificate callback during accept\n");
2901	i = SSL_accept(con);
2902	if (i <= 0)
2903	retry = is_retryable(con, i);
2904	}
2905	}
2906	#endif
2907
2908	#ifndef OPENSSL_NO_SRP
2909	while (i <= 0
2910	&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
2911	BIO_printf(bio_s_out, "LOOKUP during accept %s\n",
2912	srp_callback_parm.login);
2913
2914	lookup_srp_user(&srp_callback_parm, bio_s_out);
2915
2916	i = SSL_accept(con);
2917	if (i <= 0)
2918	retry = is_retryable(con, i);
2919	}
2920	#endif
2921	} while (i < 0 && SSL_waiting_for_async(con));
2922	}
2923
2924	if (i <= 0) {
2925	if (((dtlslisten \|\| stateless) && i == 0)
2926	\|\| (!dtlslisten && !stateless && retry)) {
2927	BIO_printf(bio_s_out, "DELAY\n");
2928	return 1;
2929	}
2930
2931	BIO_printf(bio_err, "ERROR\n");
2932
2933	verify_err = SSL_get_verify_result(con);
2934	if (verify_err != X509_V_OK) {
2935	BIO_printf(bio_err, "verify error:%s\n",
2936	X509_verify_cert_error_string(verify_err));
2937	}
2938	/* Always print any error messages */
2939	ERR_print_errors(bio_err);
2940	return 0;
2941	}
2942
2943	print_connection_info(con);
2944	return 1;
2945	}
2946
2947	static void print_connection_info(SSL *con)
2948	{
2949	const char *str;
2950	X509 *peer;
2951	char buf[BUFSIZ];
2952	#if !defined(OPENSSL_NO_NEXTPROTONEG)
2953	const unsigned char *next_proto_neg;
2954	unsigned next_proto_neg_len;
2955	#endif
2956	unsigned char *exportedkeymat;
2957	int i;
2958
2959	if (s_brief)
2960	print_ssl_summary(con);
2961
2962	PEM_write_bio_SSL_SESSION(bio_s_out, SSL_get_session(con));
2963
2964	peer = SSL_get0_peer_certificate(con);
2965	if (peer != NULL) {
2966	BIO_printf(bio_s_out, "Client certificate\n");
2967	PEM_write_bio_X509(bio_s_out, peer);
2968	dump_cert_text(bio_s_out, peer);
2969	peer = NULL;
2970	}
2971
2972	if (SSL_get_shared_ciphers(con, buf, sizeof(buf)) != NULL)
2973	BIO_printf(bio_s_out, "Shared ciphers:%s\n", buf);
2974	str = SSL_CIPHER_get_name(SSL_get_current_cipher(con));
2975	ssl_print_sigalgs(bio_s_out, con);
2976	#ifndef OPENSSL_NO_EC
2977	ssl_print_point_formats(bio_s_out, con);
2978	ssl_print_groups(bio_s_out, con, 0);
2979	#endif
2980	print_ca_names(bio_s_out, con);
2981	BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)");
2982
2983	#if !defined(OPENSSL_NO_NEXTPROTONEG)
2984	SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
2985	if (next_proto_neg) {
2986	BIO_printf(bio_s_out, "NEXTPROTO is ");
2987	BIO_write(bio_s_out, next_proto_neg, next_proto_neg_len);
2988	BIO_printf(bio_s_out, "\n");
2989	}
2990	#endif
2991	#ifndef OPENSSL_NO_SRTP
2992	{
2993	SRTP_PROTECTION_PROFILE *srtp_profile
2994	= SSL_get_selected_srtp_profile(con);
2995
2996	if (srtp_profile)
2997	BIO_printf(bio_s_out, "SRTP Extension negotiated, profile=%s\n",
2998	srtp_profile->name);
2999	}
3000	#endif
3001	if (SSL_session_reused(con))
3002	BIO_printf(bio_s_out, "Reused session-id\n");
3003
3004	ssl_print_secure_renegotiation_notes(bio_s_out, con);
3005
3006	if ((SSL_get_options(con) & SSL_OP_NO_RENEGOTIATION))
3007	BIO_printf(bio_s_out, "Renegotiation is DISABLED\n");
3008
3009	if (keymatexportlabel != NULL) {
3010	BIO_printf(bio_s_out, "Keying material exporter:\n");
3011	BIO_printf(bio_s_out, " Label: '%s'\n", keymatexportlabel);
3012	BIO_printf(bio_s_out, " Length: %i bytes\n", keymatexportlen);
3013	exportedkeymat = app_malloc(keymatexportlen, "export key");
3014	if (SSL_export_keying_material(con, exportedkeymat,
3015	keymatexportlen,
3016	keymatexportlabel,
3017	strlen(keymatexportlabel),
3018	NULL, 0, 0) <= 0) {
3019	BIO_printf(bio_s_out, " Error\n");
3020	} else {
3021	BIO_printf(bio_s_out, " Keying material: ");
3022	for (i = 0; i < keymatexportlen; i++)
3023	BIO_printf(bio_s_out, "%02X", exportedkeymat[i]);
3024	BIO_printf(bio_s_out, "\n");
3025	}
3026	OPENSSL_free(exportedkeymat);
3027	}
3028	#ifndef OPENSSL_NO_KTLS
3029	if (BIO_get_ktls_send(SSL_get_wbio(con)))
3030	BIO_printf(bio_err, "Using Kernel TLS for sending\n");
3031	if (BIO_get_ktls_recv(SSL_get_rbio(con)))
3032	BIO_printf(bio_err, "Using Kernel TLS for receiving\n");
3033	#endif
3034
3035	(void)BIO_flush(bio_s_out);
3036	}
3037
3038	static int www_body(int s, int stype, int prot, unsigned char *context)
3039	{
3040	char *buf = NULL;
3041	int ret = 1;
3042	int i, j, k, dot;
3043	SSL *con;
3044	const SSL_CIPHER *c;
3045	BIO io, ssl_bio, *sbio;
3046	#ifdef RENEG
3047	int total_bytes = 0;
3048	#endif
3049	int width;
3050	#ifndef OPENSSL_NO_KTLS
3051	int use_sendfile_for_req = use_sendfile;
3052	#endif
3053	fd_set readfds;
3054	const char *opmode;
3055	#ifdef CHARSET_EBCDIC
3056	BIO *filter;
3057	#endif
3058
3059	/* Set width for a select call if needed */
3060	width = s + 1;
3061
3062	/* as we use BIO_gets(), and it always null terminates data, we need
3063	* to allocate 1 byte longer buffer to fit the full 2^14 byte record */
3064	buf = app_malloc(bufsize + 1, "server www buffer");
3065	io = BIO_new(BIO_f_buffer());
3066	ssl_bio = BIO_new(BIO_f_ssl());
3067	if ((io == NULL) \|\| (ssl_bio == NULL))
3068	goto err;
3069
3070	if (s_nbio) {
3071	if (!BIO_socket_nbio(s, 1))
3072	ERR_print_errors(bio_err);
3073	else if (!s_quiet)
3074	BIO_printf(bio_err, "Turned on non blocking io\n");
3075	}
3076
3077	/* lets make the output buffer a reasonable size */
3078	if (BIO_set_write_buffer_size(io, bufsize) <= 0)
3079	goto err;
3080
3081	if ((con = SSL_new(ctx)) == NULL)
3082	goto err;
3083
3084	if (s_tlsextdebug) {
3085	SSL_set_tlsext_debug_callback(con, tlsext_cb);
3086	SSL_set_tlsext_debug_arg(con, bio_s_out);
3087	}
3088
3089	if (context != NULL
3090	&& !SSL_set_session_id_context(con, context,
3091	strlen((char *)context))) {
3092	SSL_free(con);
3093	goto err;
3094	}
3095
3096	sbio = BIO_new_socket(s, BIO_NOCLOSE);
3097	if (sbio == NULL) {
3098	SSL_free(con);
3099	goto err;
3100	}
3101
3102	if (s_nbio_test) {
3103	BIO *test;
3104
3105	test = BIO_new(BIO_f_nbio_test());
3106	if (test == NULL) {
3107	SSL_free(con);
3108	BIO_free(sbio);
3109	goto err;
3110	}
3111
3112	sbio = BIO_push(test, sbio);
3113	}
3114	SSL_set_bio(con, sbio, sbio);
3115	SSL_set_accept_state(con);
3116
3117	/* No need to free \|con\| after this. Done by BIO_free(ssl_bio) */
3118	BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
3119	BIO_push(io, ssl_bio);
3120	ssl_bio = NULL;
3121	#ifdef CHARSET_EBCDIC
3122	filter = BIO_new(BIO_f_ebcdic_filter());
3123	if (filter == NULL)
3124	goto err;
3125
3126	io = BIO_push(filter, io);
3127	#endif
3128
3129	if (s_debug) {
3130	BIO_set_callback_ex(SSL_get_rbio(con), bio_dump_callback);
3131	BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
3132	}
3133	if (s_msg) {
3134	#ifndef OPENSSL_NO_SSL_TRACE
3135	if (s_msg == 2)
3136	SSL_set_msg_callback(con, SSL_trace);
3137	else
3138	#endif
3139	SSL_set_msg_callback(con, msg_cb);
3140	SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
3141	}
3142
3143	for (;;) {
3144	i = BIO_gets(io, buf, bufsize + 1);
3145	if (i < 0) { /* error */
3146	if (!BIO_should_retry(io) && !SSL_waiting_for_async(con)) {
3147	if (!s_quiet)
3148	ERR_print_errors(bio_err);
3149	goto err;
3150	} else {
3151	BIO_printf(bio_s_out, "read R BLOCK\n");
3152	#ifndef OPENSSL_NO_SRP
3153	if (BIO_should_io_special(io)
3154	&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3155	BIO_printf(bio_s_out, "LOOKUP renego during read\n");
3156
3157	lookup_srp_user(&srp_callback_parm, bio_s_out);
3158
3159	continue;
3160	}
3161	#endif
3162	ossl_sleep(1000);
3163	continue;
3164	}
3165	} else if (i == 0) { /* end of input */
3166	ret = 1;
3167	goto end;
3168	}
3169
3170	/* else we have data */
3171	if (((www == 1) && (strncmp("GET ", buf, 4) == 0)) \|\|
3172	((www == 2) && (strncmp("GET /stats ", buf, 11) == 0))) {
3173	char *p;
3174	X509 *peer = NULL;
3175	STACK_OF(SSL_CIPHER) *sk;
3176	static const char *space = " ";
3177
3178	if (www == 1 && strncmp("GET /reneg", buf, 10) == 0) {
3179	if (strncmp("GET /renegcert", buf, 14) == 0)
3180	SSL_set_verify(con,
3181	SSL_VERIFY_PEER \| SSL_VERIFY_CLIENT_ONCE,
3182	NULL);
3183	i = SSL_renegotiate(con);
3184	BIO_printf(bio_s_out, "SSL_renegotiate -> %d\n", i);
3185	/* Send the HelloRequest */
3186	i = SSL_do_handshake(con);
3187	if (i <= 0) {
3188	BIO_printf(bio_s_out, "SSL_do_handshake() Retval %d\n",
3189	SSL_get_error(con, i));
3190	ERR_print_errors(bio_err);
3191	goto err;
3192	}
3193	/* Wait for a ClientHello to come back */
3194	FD_ZERO(&readfds);
3195	openssl_fdset(s, &readfds);
3196	i = select(width, (void *)&readfds, NULL, NULL, NULL);
3197	if (i <= 0 \|\| !FD_ISSET(s, &readfds)) {
3198	BIO_printf(bio_s_out,
3199	"Error waiting for client response\n");
3200	ERR_print_errors(bio_err);
3201	goto err;
3202	}
3203	/*
3204	* We're not actually expecting any data here and we ignore
3205	* any that is sent. This is just to force the handshake that
3206	* we're expecting to come from the client. If they haven't
3207	* sent one there's not much we can do.
3208	*/
3209	BIO_gets(io, buf, bufsize + 1);
3210	}
3211
3212	BIO_puts(io,
3213	"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
3214	BIO_puts(io, "<HTML><BODY BGCOLOR=\"#ffffff\">\n");
3215	BIO_puts(io, "<pre>\n");
3216	/* BIO_puts(io, OpenSSL_version(OPENSSL_VERSION)); */
3217	BIO_puts(io, "\n");
3218	for (i = 0; i < local_argc; i++) {
3219	const char *myp;
3220	for (myp = local_argv[i]; *myp; myp++)
3221	switch (*myp) {
3222	case '<':
3223	BIO_puts(io, "<");
3224	break;
3225	case '>':
3226	BIO_puts(io, ">");
3227	break;
3228	case '&':
3229	BIO_puts(io, "&");
3230	break;
3231	default:
3232	BIO_write(io, myp, 1);
3233	break;
3234	}
3235	BIO_write(io, " ", 1);
3236	}
3237	BIO_puts(io, "\n");
3238
3239	ssl_print_secure_renegotiation_notes(io, con);
3240
3241	/*
3242	* The following is evil and should not really be done
3243	*/
3244	BIO_printf(io, "Ciphers supported in s_server binary\n");
3245	sk = SSL_get_ciphers(con);
3246	j = sk_SSL_CIPHER_num(sk);
3247	for (i = 0; i < j; i++) {
3248	c = sk_SSL_CIPHER_value(sk, i);
3249	BIO_printf(io, "%-11s:%-25s ",
3250	SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
3251	if ((((i + 1) % 2) == 0) && (i + 1 != j))
3252	BIO_puts(io, "\n");
3253	}
3254	BIO_puts(io, "\n");
3255	p = SSL_get_shared_ciphers(con, buf, bufsize);
3256	if (p != NULL) {
3257	BIO_printf(io,
3258	"---\nCiphers common between both SSL end points:\n");
3259	j = i = 0;
3260	while (*p) {
3261	if (*p == ':') {
3262	BIO_write(io, space, 26 - j);
3263	i++;
3264	j = 0;
3265	BIO_write(io, ((i % 3) ? " " : "\n"), 1);
3266	} else {
3267	BIO_write(io, p, 1);
3268	j++;
3269	}
3270	p++;
3271	}
3272	BIO_puts(io, "\n");
3273	}
3274	ssl_print_sigalgs(io, con);
3275	#ifndef OPENSSL_NO_EC
3276	ssl_print_groups(io, con, 0);
3277	#endif
3278	print_ca_names(io, con);
3279	BIO_printf(io, (SSL_session_reused(con)
3280	? "---\nReused, " : "---\nNew, "));
3281	c = SSL_get_current_cipher(con);
3282	BIO_printf(io, "%s, Cipher is %s\n",
3283	SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
3284	SSL_SESSION_print(io, SSL_get_session(con));
3285	BIO_printf(io, "---\n");
3286	print_stats(io, SSL_get_SSL_CTX(con));
3287	BIO_printf(io, "---\n");
3288	peer = SSL_get0_peer_certificate(con);
3289	if (peer != NULL) {
3290	BIO_printf(io, "Client certificate\n");
3291	X509_print(io, peer);
3292	PEM_write_bio_X509(io, peer);
3293	peer = NULL;
3294	} else {
3295	BIO_puts(io, "no client certificate available\n");
3296	}
3297	BIO_puts(io, "</pre></BODY></HTML>\r\n\r\n");
3298	break;
3299	} else if ((www == 2 \|\| www == 3)
3300	&& (strncmp("GET /", buf, 5) == 0)) {
3301	BIO *file;
3302	char p, e;
3303	static const char *text =
3304	"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
3305
3306	/* skip the '/' */
3307	p = &(buf[5]);
3308
3309	dot = 1;
3310	for (e = p; *e != '\0'; e++) {
3311	if (e[0] == ' ')
3312	break;
3313
3314	if (e[0] == ':') {
3315	/* Windows drive. We treat this the same way as ".." */
3316	dot = -1;
3317	break;
3318	}
3319
3320	switch (dot) {
3321	case 1:
3322	dot = (e[0] == '.') ? 2 : 0;
3323	break;
3324	case 2:
3325	dot = (e[0] == '.') ? 3 : 0;
3326	break;
3327	case 3:
3328	dot = (e[0] == '/' \|\| e[0] == '\\') ? -1 : 0;
3329	break;
3330	}
3331	if (dot == 0)
3332	dot = (e[0] == '/' \|\| e[0] == '\\') ? 1 : 0;
3333	}
3334	dot = (dot == 3) \|\| (dot == -1); /* filename contains ".."
3335	* component */
3336
3337	if (*e == '\0') {
3338	BIO_puts(io, text);
3339	BIO_printf(io, "'%s' is an invalid file name\r\n", p);
3340	break;
3341	}
3342	*e = '\0';
3343
3344	if (dot) {
3345	BIO_puts(io, text);
3346	BIO_printf(io, "'%s' contains '..' or ':'\r\n", p);
3347	break;
3348	}
3349
3350	if (p == '/' \|\| p == '\\') {
3351	BIO_puts(io, text);
3352	BIO_printf(io, "'%s' is an invalid path\r\n", p);
3353	break;
3354	}
3355
3356	/* if a directory, do the index thang */
3357	if (app_isdir(p) > 0) {
3358	BIO_puts(io, text);
3359	BIO_printf(io, "'%s' is a directory\r\n", p);
3360	break;
3361	}
3362
3363	opmode = (http_server_binmode == 1) ? "rb" : "r";
3364	if ((file = BIO_new_file(p, opmode)) == NULL) {
3365	BIO_puts(io, text);
3366	BIO_printf(io, "Error opening '%s' mode='%s'\r\n", p, opmode);
3367	ERR_print_errors(io);
3368	break;
3369	}
3370
3371	if (!s_quiet)
3372	BIO_printf(bio_err, "FILE:%s\n", p);
3373
3374	if (www == 2) {
3375	i = strlen(p);
3376	if (((i > 5) && (strcmp(&(p[i - 5]), ".html") == 0)) \|\|
3377	((i > 4) && (strcmp(&(p[i - 4]), ".php") == 0)) \|\|
3378	((i > 4) && (strcmp(&(p[i - 4]), ".htm") == 0)))
3379	BIO_puts(io,
3380	"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
3381	else
3382	BIO_puts(io,
3383	"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
3384	}
3385	/* send the file */
3386	#ifndef OPENSSL_NO_KTLS
3387	if (use_sendfile_for_req && !BIO_get_ktls_send(SSL_get_wbio(con))) {
3388	BIO_printf(bio_err, "Warning: sendfile requested but KTLS is not available\n");
3389	use_sendfile_for_req = 0;
3390	}
3391	if (use_sendfile_for_req) {
3392	FILE *fp = NULL;
3393	int fd;
3394	struct stat st;
3395	off_t offset = 0;
3396	size_t filesize;
3397
3398	BIO_get_fp(file, &fp);
3399	fd = fileno(fp);
3400	if (fstat(fd, &st) < 0) {
3401	BIO_printf(io, "Error fstat '%s'\r\n", p);
3402	ERR_print_errors(io);
3403	goto write_error;
3404	}
3405
3406	filesize = st.st_size;
3407	if (((int)BIO_flush(io)) < 0)
3408	goto write_error;
3409
3410	for (;;) {
3411	i = SSL_sendfile(con, fd, offset, filesize, 0);
3412	if (i < 0) {
3413	BIO_printf(io, "Error SSL_sendfile '%s'\r\n", p);
3414	ERR_print_errors(io);
3415	break;
3416	} else {
3417	offset += i;
3418	filesize -= i;
3419	}
3420
3421	if (filesize <= 0) {
3422	if (!s_quiet)
3423	BIO_printf(bio_err, "KTLS SENDFILE '%s' OK\n", p);
3424
3425	break;
3426	}
3427	}
3428	} else
3429	#endif
3430	{
3431	for (;;) {
3432	i = BIO_read(file, buf, bufsize);
3433	if (i <= 0)
3434	break;
3435
3436	#ifdef RENEG
3437	total_bytes += i;
3438	BIO_printf(bio_err, "%d\n", i);
3439	if (total_bytes > 3 * 1024) {
3440	total_bytes = 0;
3441	BIO_printf(bio_err, "RENEGOTIATE\n");
3442	SSL_renegotiate(con);
3443	}
3444	#endif
3445
3446	for (j = 0; j < i;) {
3447	#ifdef RENEG
3448	static count = 0;
3449	if (++count == 13)
3450	SSL_renegotiate(con);
3451	#endif
3452	k = BIO_write(io, &(buf[j]), i - j);
3453	if (k <= 0) {
3454	if (!BIO_should_retry(io)
3455	&& !SSL_waiting_for_async(con)) {
3456	goto write_error;
3457	} else {
3458	BIO_printf(bio_s_out, "rwrite W BLOCK\n");
3459	}
3460	} else {
3461	j += k;
3462	}
3463	}
3464	}
3465	}
3466	write_error:
3467	BIO_free(file);
3468	break;
3469	}
3470	}
3471
3472	for (;;) {
3473	i = (int)BIO_flush(io);
3474	if (i <= 0) {
3475	if (!BIO_should_retry(io))
3476	break;
3477	} else
3478	break;
3479	}
3480	end:
3481	/* make sure we re-use sessions */
3482	do_ssl_shutdown(con);
3483
3484	err:
3485	OPENSSL_free(buf);
3486	BIO_free(ssl_bio);
3487	BIO_free_all(io);
3488	return ret;
3489	}
3490
3491	static int rev_body(int s, int stype, int prot, unsigned char *context)
3492	{
3493	char *buf = NULL;
3494	int i;
3495	int ret = 1;
3496	SSL *con;
3497	BIO io, ssl_bio, *sbio;
3498	#ifdef CHARSET_EBCDIC
3499	BIO *filter;
3500	#endif
3501
3502	/* as we use BIO_gets(), and it always null terminates data, we need
3503	* to allocate 1 byte longer buffer to fit the full 2^14 byte record */
3504	buf = app_malloc(bufsize + 1, "server rev buffer");
3505	io = BIO_new(BIO_f_buffer());
3506	ssl_bio = BIO_new(BIO_f_ssl());
3507	if ((io == NULL) \|\| (ssl_bio == NULL))
3508	goto err;
3509
3510	/* lets make the output buffer a reasonable size */
3511	if (BIO_set_write_buffer_size(io, bufsize) <= 0)
3512	goto err;
3513
3514	if ((con = SSL_new(ctx)) == NULL)
3515	goto err;
3516
3517	if (s_tlsextdebug) {
3518	SSL_set_tlsext_debug_callback(con, tlsext_cb);
3519	SSL_set_tlsext_debug_arg(con, bio_s_out);
3520	}
3521	if (context != NULL
3522	&& !SSL_set_session_id_context(con, context,
3523	strlen((char *)context))) {
3524	SSL_free(con);
3525	ERR_print_errors(bio_err);
3526	goto err;
3527	}
3528
3529	sbio = BIO_new_socket(s, BIO_NOCLOSE);
3530	if (sbio == NULL) {
3531	SSL_free(con);
3532	ERR_print_errors(bio_err);
3533	goto err;
3534	}
3535
3536	SSL_set_bio(con, sbio, sbio);
3537	SSL_set_accept_state(con);
3538
3539	/* No need to free \|con\| after this. Done by BIO_free(ssl_bio) */
3540	BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
3541	BIO_push(io, ssl_bio);
3542	ssl_bio = NULL;
3543	#ifdef CHARSET_EBCDIC
3544	filter = BIO_new(BIO_f_ebcdic_filter());
3545	if (filter == NULL)
3546	goto err;
3547
3548	io = BIO_push(filter, io);
3549	#endif
3550
3551	if (s_debug) {
3552	BIO_set_callback_ex(SSL_get_rbio(con), bio_dump_callback);
3553	BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
3554	}
3555	if (s_msg) {
3556	#ifndef OPENSSL_NO_SSL_TRACE
3557	if (s_msg == 2)
3558	SSL_set_msg_callback(con, SSL_trace);
3559	else
3560	#endif
3561	SSL_set_msg_callback(con, msg_cb);
3562	SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
3563	}
3564
3565	for (;;) {
3566	i = BIO_do_handshake(io);
3567	if (i > 0)
3568	break;
3569	if (!BIO_should_retry(io)) {
3570	BIO_puts(bio_err, "CONNECTION FAILURE\n");
3571	ERR_print_errors(bio_err);
3572	goto end;
3573	}
3574	#ifndef OPENSSL_NO_SRP
3575	if (BIO_should_io_special(io)
3576	&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3577	BIO_printf(bio_s_out, "LOOKUP renego during accept\n");
3578
3579	lookup_srp_user(&srp_callback_parm, bio_s_out);
3580
3581	continue;
3582	}
3583	#endif
3584	}
3585	BIO_printf(bio_err, "CONNECTION ESTABLISHED\n");
3586	print_ssl_summary(con);
3587
3588	for (;;) {
3589	i = BIO_gets(io, buf, bufsize + 1);
3590	if (i < 0) { /* error */
3591	if (!BIO_should_retry(io)) {
3592	if (!s_quiet)
3593	ERR_print_errors(bio_err);
3594	goto err;
3595	} else {
3596	BIO_printf(bio_s_out, "read R BLOCK\n");
3597	#ifndef OPENSSL_NO_SRP
3598	if (BIO_should_io_special(io)
3599	&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3600	BIO_printf(bio_s_out, "LOOKUP renego during read\n");
3601
3602	lookup_srp_user(&srp_callback_parm, bio_s_out);
3603
3604	continue;
3605	}
3606	#endif
3607	ossl_sleep(1000);
3608	continue;
3609	}
3610	} else if (i == 0) { /* end of input */
3611	ret = 1;
3612	BIO_printf(bio_err, "CONNECTION CLOSED\n");
3613	goto end;
3614	} else {
3615	char *p = buf + i - 1;
3616	while (i && (p == '\n' \|\| p == '\r')) {
3617	p--;
3618	i--;
3619	}
3620	if (!s_ign_eof && (i == 5) && (strncmp(buf, "CLOSE", 5) == 0)) {
3621	ret = 1;
3622	BIO_printf(bio_err, "CONNECTION CLOSED\n");
3623	goto end;
3624	}
3625	BUF_reverse((unsigned char *)buf, NULL, i);
3626	buf[i] = '\n';
3627	BIO_write(io, buf, i + 1);
3628	for (;;) {
3629	i = BIO_flush(io);
3630	if (i > 0)
3631	break;
3632	if (!BIO_should_retry(io))
3633	goto end;
3634	}
3635	}
3636	}
3637	end:
3638	/* make sure we re-use sessions */
3639	do_ssl_shutdown(con);
3640
3641	err:
3642
3643	OPENSSL_free(buf);
3644	BIO_free(ssl_bio);
3645	BIO_free_all(io);
3646	return ret;
3647	}
3648
3649	#define MAX_SESSION_ID_ATTEMPTS 10
3650	static int generate_session_id(SSL ssl, unsigned char id,
3651	unsigned int *id_len)
3652	{
3653	unsigned int count = 0;
3654	unsigned int session_id_prefix_len = strlen(session_id_prefix);
3655
3656	do {
3657	if (RAND_bytes(id, *id_len) <= 0)
3658	return 0;
3659	/*
3660	* Prefix the session_id with the required prefix. NB: If our prefix
3661	* is too long, clip it - but there will be worse effects anyway, eg.
3662	* the server could only possibly create 1 session ID (ie. the
3663	* prefix!) so all future session negotiations will fail due to
3664	* conflicts.
3665	*/
3666	memcpy(id, session_id_prefix,
3667	(session_id_prefix_len < *id_len) ?
3668	session_id_prefix_len : *id_len);
3669	}
3670	while (SSL_has_matching_session_id(ssl, id, *id_len) &&
3671	(++count < MAX_SESSION_ID_ATTEMPTS));
3672	if (count >= MAX_SESSION_ID_ATTEMPTS)
3673	return 0;
3674	return 1;
3675	}
3676
3677	/*
3678	* By default s_server uses an in-memory cache which caches SSL_SESSION
3679	* structures without any serialization. This hides some bugs which only
3680	* become apparent in deployed servers. By implementing a basic external
3681	* session cache some issues can be debugged using s_server.
3682	*/
3683
3684	typedef struct simple_ssl_session_st {
3685	unsigned char *id;
3686	unsigned int idlen;
3687	unsigned char *der;
3688	int derlen;
3689	struct simple_ssl_session_st *next;
3690	} simple_ssl_session;
3691
3692	static simple_ssl_session *first = NULL;
3693
3694	static int add_session(SSL ssl, SSL_SESSION session)
3695	{
3696	simple_ssl_session sess = app_malloc(sizeof(sess), "get session");
3697	unsigned char *p;
3698
3699	SSL_SESSION_get_id(session, &sess->idlen);
3700	sess->derlen = i2d_SSL_SESSION(session, NULL);
3701	if (sess->derlen < 0) {
3702	BIO_printf(bio_err, "Error encoding session\n");
3703	OPENSSL_free(sess);
3704	return 0;
3705	}
3706
3707	sess->id = OPENSSL_memdup(SSL_SESSION_get_id(session, NULL), sess->idlen);
3708	sess->der = app_malloc(sess->derlen, "get session buffer");
3709	if (!sess->id) {
3710	BIO_printf(bio_err, "Out of memory adding to external cache\n");
3711	OPENSSL_free(sess->id);
3712	OPENSSL_free(sess->der);
3713	OPENSSL_free(sess);
3714	return 0;
3715	}
3716	p = sess->der;
3717
3718	/* Assume it still works. */
3719	if (i2d_SSL_SESSION(session, &p) != sess->derlen) {
3720	BIO_printf(bio_err, "Unexpected session encoding length\n");
3721	OPENSSL_free(sess->id);
3722	OPENSSL_free(sess->der);
3723	OPENSSL_free(sess);
3724	return 0;
3725	}
3726
3727	sess->next = first;
3728	first = sess;
3729	BIO_printf(bio_err, "New session added to external cache\n");
3730	return 0;
3731	}
3732
3733	static SSL_SESSION get_session(SSL ssl, const unsigned char *id, int idlen,
3734	int *do_copy)
3735	{
3736	simple_ssl_session *sess;
3737	*do_copy = 0;
3738	for (sess = first; sess; sess = sess->next) {
3739	if (idlen == (int)sess->idlen && !memcmp(sess->id, id, idlen)) {
3740	const unsigned char *p = sess->der;
3741	BIO_printf(bio_err, "Lookup session: cache hit\n");
3742	return d2i_SSL_SESSION(NULL, &p, sess->derlen);
3743	}
3744	}
3745	BIO_printf(bio_err, "Lookup session: cache miss\n");
3746	return NULL;
3747	}
3748
3749	static void del_session(SSL_CTX sctx, SSL_SESSION session)
3750	{
3751	simple_ssl_session sess, prev = NULL;
3752	const unsigned char *id;
3753	unsigned int idlen;
3754	id = SSL_SESSION_get_id(session, &idlen);
3755	for (sess = first; sess; sess = sess->next) {
3756	if (idlen == sess->idlen && !memcmp(sess->id, id, idlen)) {
3757	if (prev)
3758	prev->next = sess->next;
3759	else
3760	first = sess->next;
3761	OPENSSL_free(sess->id);
3762	OPENSSL_free(sess->der);
3763	OPENSSL_free(sess);
3764	return;
3765	}
3766	prev = sess;
3767	}
3768	}
3769
3770	static void init_session_cache_ctx(SSL_CTX *sctx)
3771	{
3772	SSL_CTX_set_session_cache_mode(sctx,
3773	SSL_SESS_CACHE_NO_INTERNAL \|
3774	SSL_SESS_CACHE_SERVER);
3775	SSL_CTX_sess_set_new_cb(sctx, add_session);
3776	SSL_CTX_sess_set_get_cb(sctx, get_session);
3777	SSL_CTX_sess_set_remove_cb(sctx, del_session);
3778	}
3779
3780	static void free_sessions(void)
3781	{
3782	simple_ssl_session sess, tsess;
3783	for (sess = first; sess;) {
3784	OPENSSL_free(sess->id);
3785	OPENSSL_free(sess->der);
3786	tsess = sess;
3787	sess = sess->next;
3788	OPENSSL_free(tsess);
3789	}
3790	first = NULL;
3791	}
3792
3793	#endif /* OPENSSL_NO_SOCK */

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source: vbox/trunk/src/libs/openssl-3.1.7/apps/s_server.c@ 107850

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