s_server.c@ 100948

最後變更在這個檔案從100948是 100487,由 vboxsync 提交於 21 月前
openssl-3.0.9: Applied and adjusted our OpenSSL changes we made to 3.0.7. bugref:10484
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1	/*
2	* Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
3	* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4	* Copyright 2005 Nokia. All rights reserved.
5	*
6	* Licensed under the Apache License 2.0 (the "License"). You may not use
7	* this file except in compliance with the License. You can obtain a copy
8	* in the file LICENSE in the source distribution or at
9	* https://www.openssl.org/source/license.html
10	*/
11
12	#include <ctype.h>
13	#include <stdio.h>
14	#include <stdlib.h>
15	#include <string.h>
16	#if defined(_WIN32)
17	/* Included before async.h to avoid some warnings */
18	# include <windows.h>
19	#endif
20
21	#include <openssl/e_os2.h>
22	#include <openssl/async.h>
23	#include <openssl/ssl.h>
24	#include <openssl/decoder.h>
25
26	#ifndef OPENSSL_NO_SOCK
27
28	/*
29	* With IPv6, it looks like Digital has mixed up the proper order of
30	* recursive header file inclusion, resulting in the compiler complaining
31	* that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is
32	* needed to have fileno() declared correctly... So let's define u_int
33	*/
34	#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
35	# define __U_INT
36	typedef unsigned int u_int;
37	#endif
38
39	#include <openssl/bn.h>
40	#include "apps.h"
41	#include "progs.h"
42	#include <openssl/err.h>
43	#include <openssl/pem.h>
44	#include <openssl/x509.h>
45	#include <openssl/ssl.h>
46	#include <openssl/rand.h>
47	#include <openssl/ocsp.h>
48	#ifndef OPENSSL_NO_DH
49	# include <openssl/dh.h>
50	#endif
51	#include <openssl/rsa.h>
52	#include "s_apps.h"
53	#include "timeouts.h"
54	#ifdef CHARSET_EBCDIC
55	#include <openssl/ebcdic.h>
56	#endif
57	#include "internal/sockets.h"
58
59	static int not_resumable_sess_cb(SSL *s, int is_forward_secure);
60	static int sv_body(int s, int stype, int prot, unsigned char *context);
61	static int www_body(int s, int stype, int prot, unsigned char *context);
62	static int rev_body(int s, int stype, int prot, unsigned char *context);
63	static void close_accept_socket(void);
64	static int init_ssl_connection(SSL *s);
65	static void print_stats(BIO bp, SSL_CTX ctx);
66	static int generate_session_id(SSL ssl, unsigned char id,
67	unsigned int *id_len);
68	static void init_session_cache_ctx(SSL_CTX *sctx);
69	static void free_sessions(void);
70	static void print_connection_info(SSL *con);
71
72	static const int bufsize = 16 * 1024;
73	static int accept_socket = -1;
74
75	#define TEST_CERT "server.pem"
76	#define TEST_CERT2 "server2.pem"
77
78	static int s_nbio = 0;
79	static int s_nbio_test = 0;
80	static int s_crlf = 0;
81	static SSL_CTX *ctx = NULL;
82	static SSL_CTX *ctx2 = NULL;
83	static int www = 0;
84
85	static BIO *bio_s_out = NULL;
86	static BIO *bio_s_msg = NULL;
87	static int s_debug = 0;
88	static int s_tlsextdebug = 0;
89	static int s_msg = 0;
90	static int s_quiet = 0;
91	static int s_ign_eof = 0;
92	static int s_brief = 0;
93
94	static char *keymatexportlabel = NULL;
95	static int keymatexportlen = 20;
96
97	static int async = 0;
98
99	static int use_sendfile = 0;
100
101	static const char *session_id_prefix = NULL;
102
103	#ifndef OPENSSL_NO_DTLS
104	static int enable_timeouts = 0;
105	static long socket_mtu;
106	#endif
107
108	/*
109	* We define this but make it always be 0 in no-dtls builds to simplify the
110	* code.
111	*/
112	static int dtlslisten = 0;
113	static int stateless = 0;
114
115	static int early_data = 0;
116	static SSL_SESSION *psksess = NULL;
117
118	static char *psk_identity = "Client_identity";
119	char psk_key = NULL; / by default PSK is not used */
120
121	static char http_server_binmode = 0; /* for now: 0/1 = default/binary */
122
123	#ifndef OPENSSL_NO_PSK
124	static unsigned int psk_server_cb(SSL ssl, const char identity,
125	unsigned char *psk,
126	unsigned int max_psk_len)
127	{
128	long key_len = 0;
129	unsigned char *key;
130
131	if (s_debug)
132	BIO_printf(bio_s_out, "psk_server_cb\n");
133
134	if (!SSL_is_dtls(ssl) && SSL_version(ssl) >= TLS1_3_VERSION) {
135	/*
136	* This callback is designed for use in (D)TLSv1.2 (or below). It is
137	* possible to use a single callback for all protocol versions - but it
138	* is preferred to use a dedicated callback for TLSv1.3. For TLSv1.3 we
139	* have psk_find_session_cb.
140	*/
141	return 0;
142	}
143
144	if (identity == NULL) {
145	BIO_printf(bio_err, "Error: client did not send PSK identity\n");
146	goto out_err;
147	}
148	if (s_debug)
149	BIO_printf(bio_s_out, "identity_len=%d identity=%s\n",
150	(int)strlen(identity), identity);
151
152	/* here we could lookup the given identity e.g. from a database */
153	if (strcmp(identity, psk_identity) != 0) {
154	BIO_printf(bio_s_out, "PSK warning: client identity not what we expected"
155	" (got '%s' expected '%s')\n", identity, psk_identity);
156	} else {
157	if (s_debug)
158	BIO_printf(bio_s_out, "PSK client identity found\n");
159	}
160
161	/* convert the PSK key to binary */
162	key = OPENSSL_hexstr2buf(psk_key, &key_len);
163	if (key == NULL) {
164	BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
165	psk_key);
166	return 0;
167	}
168	if (key_len > (int)max_psk_len) {
169	BIO_printf(bio_err,
170	"psk buffer of callback is too small (%d) for key (%ld)\n",
171	max_psk_len, key_len);
172	OPENSSL_free(key);
173	return 0;
174	}
175
176	memcpy(psk, key, key_len);
177	OPENSSL_free(key);
178
179	if (s_debug)
180	BIO_printf(bio_s_out, "fetched PSK len=%ld\n", key_len);
181	return key_len;
182	out_err:
183	if (s_debug)
184	BIO_printf(bio_err, "Error in PSK server callback\n");
185	(void)BIO_flush(bio_err);
186	(void)BIO_flush(bio_s_out);
187	return 0;
188	}
189	#endif
190
191	static int psk_find_session_cb(SSL ssl, const unsigned char identity,
192	size_t identity_len, SSL_SESSION **sess)
193	{
194	SSL_SESSION *tmpsess = NULL;
195	unsigned char *key;
196	long key_len;
197	const SSL_CIPHER *cipher = NULL;
198
199	if (strlen(psk_identity) != identity_len
200	\|\| memcmp(psk_identity, identity, identity_len) != 0) {
201	*sess = NULL;
202	return 1;
203	}
204
205	if (psksess != NULL) {
206	SSL_SESSION_up_ref(psksess);
207	*sess = psksess;
208	return 1;
209	}
210
211	key = OPENSSL_hexstr2buf(psk_key, &key_len);
212	if (key == NULL) {
213	BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
214	psk_key);
215	return 0;
216	}
217
218	/* We default to SHA256 */
219	cipher = SSL_CIPHER_find(ssl, tls13_aes128gcmsha256_id);
220	if (cipher == NULL) {
221	BIO_printf(bio_err, "Error finding suitable ciphersuite\n");
222	OPENSSL_free(key);
223	return 0;
224	}
225
226	tmpsess = SSL_SESSION_new();
227	if (tmpsess == NULL
228	\|\| !SSL_SESSION_set1_master_key(tmpsess, key, key_len)
229	\|\| !SSL_SESSION_set_cipher(tmpsess, cipher)
230	\|\| !SSL_SESSION_set_protocol_version(tmpsess, SSL_version(ssl))) {
231	OPENSSL_free(key);
232	SSL_SESSION_free(tmpsess);
233	return 0;
234	}
235	OPENSSL_free(key);
236	*sess = tmpsess;
237
238	return 1;
239	}
240
241	#ifndef OPENSSL_NO_SRP
242	static srpsrvparm srp_callback_parm;
243	#endif
244
245	static int local_argc = 0;
246	static char **local_argv;
247
248	#ifdef CHARSET_EBCDIC
249	static int ebcdic_new(BIO *bi);
250	static int ebcdic_free(BIO *a);
251	static int ebcdic_read(BIO b, char out, int outl);
252	static int ebcdic_write(BIO b, const char in, int inl);
253	static long ebcdic_ctrl(BIO b, int cmd, long num, void ptr);
254	static int ebcdic_gets(BIO bp, char buf, int size);
255	static int ebcdic_puts(BIO bp, const char str);
256
257	# define BIO_TYPE_EBCDIC_FILTER (18\|0x0200)
258	static BIO_METHOD *methods_ebcdic = NULL;
259
260	/* This struct is "unwarranted chumminess with the compiler." */
261	typedef struct {
262	size_t alloced;
263	char buff[1];
264	} EBCDIC_OUTBUFF;
265
266	static const BIO_METHOD *BIO_f_ebcdic_filter()
267	{
268	if (methods_ebcdic == NULL) {
269	methods_ebcdic = BIO_meth_new(BIO_TYPE_EBCDIC_FILTER,
270	"EBCDIC/ASCII filter");
271	if (methods_ebcdic == NULL
272	\|\| !BIO_meth_set_write(methods_ebcdic, ebcdic_write)
273	\|\| !BIO_meth_set_read(methods_ebcdic, ebcdic_read)
274	\|\| !BIO_meth_set_puts(methods_ebcdic, ebcdic_puts)
275	\|\| !BIO_meth_set_gets(methods_ebcdic, ebcdic_gets)
276	\|\| !BIO_meth_set_ctrl(methods_ebcdic, ebcdic_ctrl)
277	\|\| !BIO_meth_set_create(methods_ebcdic, ebcdic_new)
278	\|\| !BIO_meth_set_destroy(methods_ebcdic, ebcdic_free))
279	return NULL;
280	}
281	return methods_ebcdic;
282	}
283
284	static int ebcdic_new(BIO *bi)
285	{
286	EBCDIC_OUTBUFF *wbuf;
287
288	wbuf = app_malloc(sizeof(*wbuf) + 1024, "ebcdic wbuf");
289	wbuf->alloced = 1024;
290	wbuf->buff[0] = '\0';
291
292	BIO_set_data(bi, wbuf);
293	BIO_set_init(bi, 1);
294	return 1;
295	}
296
297	static int ebcdic_free(BIO *a)
298	{
299	EBCDIC_OUTBUFF *wbuf;
300
301	if (a == NULL)
302	return 0;
303	wbuf = BIO_get_data(a);
304	OPENSSL_free(wbuf);
305	BIO_set_data(a, NULL);
306	BIO_set_init(a, 0);
307
308	return 1;
309	}
310
311	static int ebcdic_read(BIO b, char out, int outl)
312	{
313	int ret = 0;
314	BIO *next = BIO_next(b);
315
316	if (out == NULL \|\| outl == 0)
317	return 0;
318	if (next == NULL)
319	return 0;
320
321	ret = BIO_read(next, out, outl);
322	if (ret > 0)
323	ascii2ebcdic(out, out, ret);
324	return ret;
325	}
326
327	static int ebcdic_write(BIO b, const char in, int inl)
328	{
329	EBCDIC_OUTBUFF *wbuf;
330	BIO *next = BIO_next(b);
331	int ret = 0;
332	int num;
333
334	if ((in == NULL) \|\| (inl <= 0))
335	return 0;
336	if (next == NULL)
337	return 0;
338
339	wbuf = (EBCDIC_OUTBUFF *) BIO_get_data(b);
340
341	if (inl > (num = wbuf->alloced)) {
342	num = num + num; /* double the size */
343	if (num < inl)
344	num = inl;
345	OPENSSL_free(wbuf);
346	wbuf = app_malloc(sizeof(*wbuf) + num, "grow ebcdic wbuf");
347
348	wbuf->alloced = num;
349	wbuf->buff[0] = '\0';
350
351	BIO_set_data(b, wbuf);
352	}
353
354	ebcdic2ascii(wbuf->buff, in, inl);
355
356	ret = BIO_write(next, wbuf->buff, inl);
357
358	return ret;
359	}
360
361	static long ebcdic_ctrl(BIO b, int cmd, long num, void ptr)
362	{
363	long ret;
364	BIO *next = BIO_next(b);
365
366	if (next == NULL)
367	return 0;
368	switch (cmd) {
369	case BIO_CTRL_DUP:
370	ret = 0L;
371	break;
372	default:
373	ret = BIO_ctrl(next, cmd, num, ptr);
374	break;
375	}
376	return ret;
377	}
378
379	static int ebcdic_gets(BIO bp, char buf, int size)
380	{
381	int i, ret = 0;
382	BIO *next = BIO_next(bp);
383
384	if (next == NULL)
385	return 0;
386	/* return(BIO_gets(bp->next_bio,buf,size));*/
387	for (i = 0; i < size - 1; ++i) {
388	ret = ebcdic_read(bp, &buf[i], 1);
389	if (ret <= 0)
390	break;
391	else if (buf[i] == '\n') {
392	++i;
393	break;
394	}
395	}
396	if (i < size)
397	buf[i] = '\0';
398	return (ret < 0 && i == 0) ? ret : i;
399	}
400
401	static int ebcdic_puts(BIO bp, const char str)
402	{
403	if (BIO_next(bp) == NULL)
404	return 0;
405	return ebcdic_write(bp, str, strlen(str));
406	}
407	#endif
408
409	/* This is a context that we pass to callbacks */
410	typedef struct tlsextctx_st {
411	char *servername;
412	BIO *biodebug;
413	int extension_error;
414	} tlsextctx;
415
416	static int ssl_servername_cb(SSL s, int ad, void *arg)
417	{
418	tlsextctx p = (tlsextctx ) arg;
419	const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
420
421	if (servername != NULL && p->biodebug != NULL) {
422	const char *cp = servername;
423	unsigned char uc;
424
425	BIO_printf(p->biodebug, "Hostname in TLS extension: \"");
426	while ((uc = *cp++) != 0)
427	BIO_printf(p->biodebug,
428	(((uc) & ~127) == 0) && isprint(uc) ? "%c" : "\\x%02x", uc);
429	BIO_printf(p->biodebug, "\"\n");
430	}
431
432	if (p->servername == NULL)
433	return SSL_TLSEXT_ERR_NOACK;
434
435	if (servername != NULL) {
436	if (OPENSSL_strcasecmp(servername, p->servername))
437	return p->extension_error;
438	if (ctx2 != NULL) {
439	BIO_printf(p->biodebug, "Switching server context.\n");
440	SSL_set_SSL_CTX(s, ctx2);
441	}
442	}
443	return SSL_TLSEXT_ERR_OK;
444	}
445
446	/* Structure passed to cert status callback */
447	typedef struct tlsextstatusctx_st {
448	int timeout;
449	/* File to load OCSP Response from (or NULL if no file) */
450	char *respin;
451	/* Default responder to use */
452	char host, path, *port;
453	char proxy, no_proxy;
454	int use_ssl;
455	int verbose;
456	} tlsextstatusctx;
457
458	static tlsextstatusctx tlscstatp = { -1 };
459
460	#ifndef OPENSSL_NO_OCSP
461
462	/*
463	* Helper function to get an OCSP_RESPONSE from a responder. This is a
464	* simplified version. It examines certificates each time and makes one OCSP
465	* responder query for each request. A full version would store details such as
466	* the OCSP certificate IDs and minimise the number of OCSP responses by caching
467	* them until they were considered "expired".
468	*/
469	static int get_ocsp_resp_from_responder(SSL s, tlsextstatusctx srctx,
470	OCSP_RESPONSE **resp)
471	{
472	char host = NULL, port = NULL, *path = NULL;
473	char proxy = NULL, no_proxy = NULL;
474	int use_ssl;
475	STACK_OF(OPENSSL_STRING) *aia = NULL;
476	X509 *x = NULL;
477	X509_STORE_CTX *inctx = NULL;
478	X509_OBJECT *obj;
479	OCSP_REQUEST *req = NULL;
480	OCSP_CERTID *id = NULL;
481	STACK_OF(X509_EXTENSION) *exts;
482	int ret = SSL_TLSEXT_ERR_NOACK;
483	int i;
484
485	/* Build up OCSP query from server certificate */
486	x = SSL_get_certificate(s);
487	aia = X509_get1_ocsp(x);
488	if (aia != NULL) {
489	if (!OSSL_HTTP_parse_url(sk_OPENSSL_STRING_value(aia, 0), &use_ssl,
490	NULL, &host, &port, NULL, &path, NULL, NULL)) {
491	BIO_puts(bio_err, "cert_status: can't parse AIA URL\n");
492	goto err;
493	}
494	if (srctx->verbose)
495	BIO_printf(bio_err, "cert_status: AIA URL: %s\n",
496	sk_OPENSSL_STRING_value(aia, 0));
497	} else {
498	if (srctx->host == NULL) {
499	BIO_puts(bio_err,
500	"cert_status: no AIA and no default responder URL\n");
501	goto done;
502	}
503	host = srctx->host;
504	path = srctx->path;
505	port = srctx->port;
506	use_ssl = srctx->use_ssl;
507	}
508	proxy = srctx->proxy;
509	no_proxy = srctx->no_proxy;
510
511	inctx = X509_STORE_CTX_new();
512	if (inctx == NULL)
513	goto err;
514	if (!X509_STORE_CTX_init(inctx,
515	SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
516	NULL, NULL))
517	goto err;
518	obj = X509_STORE_CTX_get_obj_by_subject(inctx, X509_LU_X509,
519	X509_get_issuer_name(x));
520	if (obj == NULL) {
521	BIO_puts(bio_err, "cert_status: Can't retrieve issuer certificate.\n");
522	goto done;
523	}
524	id = OCSP_cert_to_id(NULL, x, X509_OBJECT_get0_X509(obj));
525	X509_OBJECT_free(obj);
526	if (id == NULL)
527	goto err;
528	req = OCSP_REQUEST_new();
529	if (req == NULL)
530	goto err;
531	if (!OCSP_request_add0_id(req, id))
532	goto err;
533	id = NULL;
534	/* Add any extensions to the request */
535	SSL_get_tlsext_status_exts(s, &exts);
536	for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
537	X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
538	if (!OCSP_REQUEST_add_ext(req, ext, -1))
539	goto err;
540	}
541	*resp = process_responder(req, host, port, path, proxy, no_proxy,
542	use_ssl, NULL /* headers */, srctx->timeout);
543	if (*resp == NULL) {
544	BIO_puts(bio_err, "cert_status: error querying responder\n");
545	goto done;
546	}
547
548	ret = SSL_TLSEXT_ERR_OK;
549	goto done;
550
551	err:
552	ret = SSL_TLSEXT_ERR_ALERT_FATAL;
553	done:
554	/*
555	* If we parsed aia we need to free; otherwise they were copied and we
556	* don't
557	*/
558	if (aia != NULL) {
559	OPENSSL_free(host);
560	OPENSSL_free(path);
561	OPENSSL_free(port);
562	X509_email_free(aia);
563	}
564	OCSP_CERTID_free(id);
565	OCSP_REQUEST_free(req);
566	X509_STORE_CTX_free(inctx);
567	return ret;
568	}
569
570	/*
571	* Certificate Status callback. This is called when a client includes a
572	* certificate status request extension. The response is either obtained from a
573	* file, or from an OCSP responder.
574	*/
575	static int cert_status_cb(SSL s, void arg)
576	{
577	tlsextstatusctx *srctx = arg;
578	OCSP_RESPONSE *resp = NULL;
579	unsigned char *rspder = NULL;
580	int rspderlen;
581	int ret = SSL_TLSEXT_ERR_ALERT_FATAL;
582
583	if (srctx->verbose)
584	BIO_puts(bio_err, "cert_status: callback called\n");
585
586	if (srctx->respin != NULL) {
587	BIO *derbio = bio_open_default(srctx->respin, 'r', FORMAT_ASN1);
588	if (derbio == NULL) {
589	BIO_puts(bio_err, "cert_status: Cannot open OCSP response file\n");
590	goto err;
591	}
592	resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
593	BIO_free(derbio);
594	if (resp == NULL) {
595	BIO_puts(bio_err, "cert_status: Error reading OCSP response\n");
596	goto err;
597	}
598	} else {
599	ret = get_ocsp_resp_from_responder(s, srctx, &resp);
600	if (ret != SSL_TLSEXT_ERR_OK)
601	goto err;
602	}
603
604	rspderlen = i2d_OCSP_RESPONSE(resp, &rspder);
605	if (rspderlen <= 0)
606	goto err;
607
608	SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen);
609	if (srctx->verbose) {
610	BIO_puts(bio_err, "cert_status: ocsp response sent:\n");
611	OCSP_RESPONSE_print(bio_err, resp, 2);
612	}
613
614	ret = SSL_TLSEXT_ERR_OK;
615
616	err:
617	if (ret != SSL_TLSEXT_ERR_OK)
618	ERR_print_errors(bio_err);
619
620	OCSP_RESPONSE_free(resp);
621
622	return ret;
623	}
624	#endif
625
626	#ifndef OPENSSL_NO_NEXTPROTONEG
627	/* This is the context that we pass to next_proto_cb */
628	typedef struct tlsextnextprotoctx_st {
629	unsigned char *data;
630	size_t len;
631	} tlsextnextprotoctx;
632
633	static int next_proto_cb(SSL s, const unsigned char *data,
634	unsigned int len, void arg)
635	{
636	tlsextnextprotoctx *next_proto = arg;
637
638	*data = next_proto->data;
639	*len = next_proto->len;
640
641	return SSL_TLSEXT_ERR_OK;
642	}
643	#endif /* ndef OPENSSL_NO_NEXTPROTONEG */
644
645	/* This the context that we pass to alpn_cb */
646	typedef struct tlsextalpnctx_st {
647	unsigned char *data;
648	size_t len;
649	} tlsextalpnctx;
650
651	static int alpn_cb(SSL s, const unsigned char out, unsigned char outlen,
652	const unsigned char in, unsigned int inlen, void arg)
653	{
654	tlsextalpnctx *alpn_ctx = arg;
655
656	if (!s_quiet) {
657	/* We can assume that \|in\| is syntactically valid. */
658	unsigned int i;
659	BIO_printf(bio_s_out, "ALPN protocols advertised by the client: ");
660	for (i = 0; i < inlen;) {
661	if (i)
662	BIO_write(bio_s_out, ", ", 2);
663	BIO_write(bio_s_out, &in[i + 1], in[i]);
664	i += in[i] + 1;
665	}
666	BIO_write(bio_s_out, "\n", 1);
667	}
668
669	if (SSL_select_next_proto
670	((unsigned char **)out, outlen, alpn_ctx->data, alpn_ctx->len, in,
671	inlen) != OPENSSL_NPN_NEGOTIATED) {
672	return SSL_TLSEXT_ERR_ALERT_FATAL;
673	}
674
675	if (!s_quiet) {
676	BIO_printf(bio_s_out, "ALPN protocols selected: ");
677	BIO_write(bio_s_out, out, outlen);
678	BIO_write(bio_s_out, "\n", 1);
679	}
680
681	return SSL_TLSEXT_ERR_OK;
682	}
683
684	static int not_resumable_sess_cb(SSL *s, int is_forward_secure)
685	{
686	/* disable resumption for sessions with forward secure ciphers */
687	return is_forward_secure;
688	}
689
690	typedef enum OPTION_choice {
691	OPT_COMMON,
692	OPT_ENGINE,
693	OPT_4, OPT_6, OPT_ACCEPT, OPT_PORT, OPT_UNIX, OPT_UNLINK, OPT_NACCEPT,
694	OPT_VERIFY, OPT_NAMEOPT, OPT_UPPER_V_VERIFY, OPT_CONTEXT, OPT_CERT, OPT_CRL,
695	OPT_CRL_DOWNLOAD, OPT_SERVERINFO, OPT_CERTFORM, OPT_KEY, OPT_KEYFORM,
696	OPT_PASS, OPT_CERT_CHAIN, OPT_DHPARAM, OPT_DCERTFORM, OPT_DCERT,
697	OPT_DKEYFORM, OPT_DPASS, OPT_DKEY, OPT_DCERT_CHAIN, OPT_NOCERT,
698	OPT_CAPATH, OPT_NOCAPATH, OPT_CHAINCAPATH, OPT_VERIFYCAPATH, OPT_NO_CACHE,
699	OPT_EXT_CACHE, OPT_CRLFORM, OPT_VERIFY_RET_ERROR, OPT_VERIFY_QUIET,
700	OPT_BUILD_CHAIN, OPT_CAFILE, OPT_NOCAFILE, OPT_CHAINCAFILE,
701	OPT_VERIFYCAFILE,
702	OPT_CASTORE, OPT_NOCASTORE, OPT_CHAINCASTORE, OPT_VERIFYCASTORE,
703	OPT_NBIO, OPT_NBIO_TEST, OPT_IGN_EOF, OPT_NO_IGN_EOF,
704	OPT_DEBUG, OPT_TLSEXTDEBUG, OPT_STATUS, OPT_STATUS_VERBOSE,
705	OPT_STATUS_TIMEOUT, OPT_PROXY, OPT_NO_PROXY, OPT_STATUS_URL,
706	OPT_STATUS_FILE, OPT_MSG, OPT_MSGFILE,
707	OPT_TRACE, OPT_SECURITY_DEBUG, OPT_SECURITY_DEBUG_VERBOSE, OPT_STATE,
708	OPT_CRLF, OPT_QUIET, OPT_BRIEF, OPT_NO_DHE,
709	OPT_NO_RESUME_EPHEMERAL, OPT_PSK_IDENTITY, OPT_PSK_HINT, OPT_PSK,
710	OPT_PSK_SESS, OPT_SRPVFILE, OPT_SRPUSERSEED, OPT_REV, OPT_WWW,
711	OPT_UPPER_WWW, OPT_HTTP, OPT_ASYNC, OPT_SSL_CONFIG,
712	OPT_MAX_SEND_FRAG, OPT_SPLIT_SEND_FRAG, OPT_MAX_PIPELINES, OPT_READ_BUF,
713	OPT_SSL3, OPT_TLS1_3, OPT_TLS1_2, OPT_TLS1_1, OPT_TLS1, OPT_DTLS, OPT_DTLS1,
714	OPT_DTLS1_2, OPT_SCTP, OPT_TIMEOUT, OPT_MTU, OPT_LISTEN, OPT_STATELESS,
715	OPT_ID_PREFIX, OPT_SERVERNAME, OPT_SERVERNAME_FATAL,
716	OPT_CERT2, OPT_KEY2, OPT_NEXTPROTONEG, OPT_ALPN, OPT_SENDFILE,
717	OPT_SRTP_PROFILES, OPT_KEYMATEXPORT, OPT_KEYMATEXPORTLEN,
718	OPT_KEYLOG_FILE, OPT_MAX_EARLY, OPT_RECV_MAX_EARLY, OPT_EARLY_DATA,
719	OPT_S_NUM_TICKETS, OPT_ANTI_REPLAY, OPT_NO_ANTI_REPLAY, OPT_SCTP_LABEL_BUG,
720	OPT_HTTP_SERVER_BINMODE, OPT_NOCANAMES, OPT_IGNORE_UNEXPECTED_EOF,
721	OPT_R_ENUM,
722	OPT_S_ENUM,
723	OPT_V_ENUM,
724	OPT_X_ENUM,
725	OPT_PROV_ENUM
726	} OPTION_CHOICE;
727
728	const OPTIONS s_server_options[] = {
729	OPT_SECTION("General"),
730	{"help", OPT_HELP, '-', "Display this summary"},
731	{"ssl_config", OPT_SSL_CONFIG, 's',
732	"Configure SSL_CTX using the given configuration value"},
733	#ifndef OPENSSL_NO_SSL_TRACE
734	{"trace", OPT_TRACE, '-', "trace protocol messages"},
735	#endif
736	#ifndef OPENSSL_NO_ENGINE
737	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
738	#endif
739
740	OPT_SECTION("Network"),
741	{"port", OPT_PORT, 'p',
742	"TCP/IP port to listen on for connections (default is " PORT ")"},
743	{"accept", OPT_ACCEPT, 's',
744	"TCP/IP optional host and port to listen on for connections (default is *:" PORT ")"},
745	#ifdef AF_UNIX
746	{"unix", OPT_UNIX, 's', "Unix domain socket to accept on"},
747	{"unlink", OPT_UNLINK, '-', "For -unix, unlink existing socket first"},
748	#endif
749	{"4", OPT_4, '-', "Use IPv4 only"},
750	{"6", OPT_6, '-', "Use IPv6 only"},
751
752	OPT_SECTION("Identity"),
753	{"context", OPT_CONTEXT, 's', "Set session ID context"},
754	{"CAfile", OPT_CAFILE, '<', "PEM format file of CA's"},
755	{"CApath", OPT_CAPATH, '/', "PEM format directory of CA's"},
756	{"CAstore", OPT_CASTORE, ':', "URI to store of CA's"},
757	{"no-CAfile", OPT_NOCAFILE, '-',
758	"Do not load the default certificates file"},
759	{"no-CApath", OPT_NOCAPATH, '-',
760	"Do not load certificates from the default certificates directory"},
761	{"no-CAstore", OPT_NOCASTORE, '-',
762	"Do not load certificates from the default certificates store URI"},
763	{"nocert", OPT_NOCERT, '-', "Don't use any certificates (Anon-DH)"},
764	{"verify", OPT_VERIFY, 'n', "Turn on peer certificate verification"},
765	{"Verify", OPT_UPPER_V_VERIFY, 'n',
766	"Turn on peer certificate verification, must have a cert"},
767	{"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
768	{"cert", OPT_CERT, '<', "Server certificate file to use; default " TEST_CERT},
769	{"cert2", OPT_CERT2, '<',
770	"Certificate file to use for servername; default " TEST_CERT2},
771	{"certform", OPT_CERTFORM, 'F',
772	"Server certificate file format (PEM/DER/P12); has no effect"},
773	{"cert_chain", OPT_CERT_CHAIN, '<',
774	"Server certificate chain file in PEM format"},
775	{"build_chain", OPT_BUILD_CHAIN, '-', "Build server certificate chain"},
776	{"serverinfo", OPT_SERVERINFO, 's',
777	"PEM serverinfo file for certificate"},
778	{"key", OPT_KEY, 's',
779	"Private key file to use; default is -cert file or else" TEST_CERT},
780	{"key2", OPT_KEY2, '<',
781	"-Private Key file to use for servername if not in -cert2"},
782	{"keyform", OPT_KEYFORM, 'f', "Key format (ENGINE, other values ignored)"},
783	{"pass", OPT_PASS, 's', "Private key and cert file pass phrase source"},
784	{"dcert", OPT_DCERT, '<',
785	"Second server certificate file to use (usually for DSA)"},
786	{"dcertform", OPT_DCERTFORM, 'F',
787	"Second server certificate file format (PEM/DER/P12); has no effect"},
788	{"dcert_chain", OPT_DCERT_CHAIN, '<',
789	"second server certificate chain file in PEM format"},
790	{"dkey", OPT_DKEY, '<',
791	"Second private key file to use (usually for DSA)"},
792	{"dkeyform", OPT_DKEYFORM, 'F',
793	"Second key file format (ENGINE, other values ignored)"},
794	{"dpass", OPT_DPASS, 's',
795	"Second private key and cert file pass phrase source"},
796	{"dhparam", OPT_DHPARAM, '<', "DH parameters file to use"},
797	{"servername", OPT_SERVERNAME, 's',
798	"Servername for HostName TLS extension"},
799	{"servername_fatal", OPT_SERVERNAME_FATAL, '-',
800	"On servername mismatch send fatal alert (default warning alert)"},
801	{"nbio_test", OPT_NBIO_TEST, '-', "Test with the non-blocking test bio"},
802	{"crlf", OPT_CRLF, '-', "Convert LF from terminal into CRLF"},
803	{"quiet", OPT_QUIET, '-', "No server output"},
804	{"no_resume_ephemeral", OPT_NO_RESUME_EPHEMERAL, '-',
805	"Disable caching and tickets if ephemeral (EC)DH is used"},
806	{"www", OPT_WWW, '-', "Respond to a 'GET /' with a status page"},
807	{"WWW", OPT_UPPER_WWW, '-', "Respond to a 'GET with the file ./path"},
808	{"ignore_unexpected_eof", OPT_IGNORE_UNEXPECTED_EOF, '-',
809	"Do not treat lack of close_notify from a peer as an error"},
810	{"tlsextdebug", OPT_TLSEXTDEBUG, '-',
811	"Hex dump of all TLS extensions received"},
812	{"HTTP", OPT_HTTP, '-', "Like -WWW but ./path includes HTTP headers"},
813	{"id_prefix", OPT_ID_PREFIX, 's',
814	"Generate SSL/TLS session IDs prefixed by arg"},
815	{"keymatexport", OPT_KEYMATEXPORT, 's',
816	"Export keying material using label"},
817	{"keymatexportlen", OPT_KEYMATEXPORTLEN, 'p',
818	"Export len bytes of keying material; default 20"},
819	{"CRL", OPT_CRL, '<', "CRL file to use"},
820	{"CRLform", OPT_CRLFORM, 'F', "CRL file format (PEM or DER); default PEM"},
821	{"crl_download", OPT_CRL_DOWNLOAD, '-',
822	"Download CRLs from distribution points in certificate CDP entries"},
823	{"chainCAfile", OPT_CHAINCAFILE, '<',
824	"CA file for certificate chain (PEM format)"},
825	{"chainCApath", OPT_CHAINCAPATH, '/',
826	"use dir as certificate store path to build CA certificate chain"},
827	{"chainCAstore", OPT_CHAINCASTORE, ':',
828	"use URI as certificate store to build CA certificate chain"},
829	{"verifyCAfile", OPT_VERIFYCAFILE, '<',
830	"CA file for certificate verification (PEM format)"},
831	{"verifyCApath", OPT_VERIFYCAPATH, '/',
832	"use dir as certificate store path to verify CA certificate"},
833	{"verifyCAstore", OPT_VERIFYCASTORE, ':',
834	"use URI as certificate store to verify CA certificate"},
835	{"no_cache", OPT_NO_CACHE, '-', "Disable session cache"},
836	{"ext_cache", OPT_EXT_CACHE, '-',
837	"Disable internal cache, set up and use external cache"},
838	{"verify_return_error", OPT_VERIFY_RET_ERROR, '-',
839	"Close connection on verification error"},
840	{"verify_quiet", OPT_VERIFY_QUIET, '-',
841	"No verify output except verify errors"},
842	{"ign_eof", OPT_IGN_EOF, '-', "Ignore input EOF (default when -quiet)"},
843	{"no_ign_eof", OPT_NO_IGN_EOF, '-', "Do not ignore input EOF"},
844
845	#ifndef OPENSSL_NO_OCSP
846	OPT_SECTION("OCSP"),
847	{"status", OPT_STATUS, '-', "Request certificate status from server"},
848	{"status_verbose", OPT_STATUS_VERBOSE, '-',
849	"Print more output in certificate status callback"},
850	{"status_timeout", OPT_STATUS_TIMEOUT, 'n',
851	"Status request responder timeout"},
852	{"status_url", OPT_STATUS_URL, 's', "Status request fallback URL"},
853	{"proxy", OPT_PROXY, 's',
854	"[http[s]://]host[:port][/path] of HTTP(S) proxy to use; path is ignored"},
855	{"no_proxy", OPT_NO_PROXY, 's',
856	"List of addresses of servers not to use HTTP(S) proxy for"},
857	{OPT_MORE_STR, 0, 0,
858	"Default from environment variable 'no_proxy', else 'NO_PROXY', else none"},
859	{"status_file", OPT_STATUS_FILE, '<',
860	"File containing DER encoded OCSP Response"},
861	#endif
862
863	OPT_SECTION("Debug"),
864	{"security_debug", OPT_SECURITY_DEBUG, '-',
865	"Print output from SSL/TLS security framework"},
866	{"security_debug_verbose", OPT_SECURITY_DEBUG_VERBOSE, '-',
867	"Print more output from SSL/TLS security framework"},
868	{"brief", OPT_BRIEF, '-',
869	"Restrict output to brief summary of connection parameters"},
870	{"rev", OPT_REV, '-',
871	"act as an echo server that sends back received text reversed"},
872	{"debug", OPT_DEBUG, '-', "Print more output"},
873	{"msg", OPT_MSG, '-', "Show protocol messages"},
874	{"msgfile", OPT_MSGFILE, '>',
875	"File to send output of -msg or -trace, instead of stdout"},
876	{"state", OPT_STATE, '-', "Print the SSL states"},
877	{"async", OPT_ASYNC, '-', "Operate in asynchronous mode"},
878	{"max_pipelines", OPT_MAX_PIPELINES, 'p',
879	"Maximum number of encrypt/decrypt pipelines to be used"},
880	{"naccept", OPT_NACCEPT, 'p', "Terminate after #num connections"},
881	{"keylogfile", OPT_KEYLOG_FILE, '>', "Write TLS secrets to file"},
882
883	OPT_SECTION("Network"),
884	{"nbio", OPT_NBIO, '-', "Use non-blocking IO"},
885	{"timeout", OPT_TIMEOUT, '-', "Enable timeouts"},
886	{"mtu", OPT_MTU, 'p', "Set link-layer MTU"},
887	{"read_buf", OPT_READ_BUF, 'p',
888	"Default read buffer size to be used for connections"},
889	{"split_send_frag", OPT_SPLIT_SEND_FRAG, 'p',
890	"Size used to split data for encrypt pipelines"},
891	{"max_send_frag", OPT_MAX_SEND_FRAG, 'p', "Maximum Size of send frames "},
892
893	OPT_SECTION("Server identity"),
894	{"psk_identity", OPT_PSK_IDENTITY, 's', "PSK identity to expect"},
895	#ifndef OPENSSL_NO_PSK
896	{"psk_hint", OPT_PSK_HINT, 's', "PSK identity hint to use"},
897	#endif
898	{"psk", OPT_PSK, 's', "PSK in hex (without 0x)"},
899	{"psk_session", OPT_PSK_SESS, '<', "File to read PSK SSL session from"},
900	#ifndef OPENSSL_NO_SRP
901	{"srpvfile", OPT_SRPVFILE, '<', "(deprecated) The verifier file for SRP"},
902	{"srpuserseed", OPT_SRPUSERSEED, 's',
903	"(deprecated) A seed string for a default user salt"},
904	#endif
905
906	OPT_SECTION("Protocol and version"),
907	{"max_early_data", OPT_MAX_EARLY, 'n',
908	"The maximum number of bytes of early data as advertised in tickets"},
909	{"recv_max_early_data", OPT_RECV_MAX_EARLY, 'n',
910	"The maximum number of bytes of early data (hard limit)"},
911	{"early_data", OPT_EARLY_DATA, '-', "Attempt to read early data"},
912	{"num_tickets", OPT_S_NUM_TICKETS, 'n',
913	"The number of TLSv1.3 session tickets that a server will automatically issue" },
914	{"anti_replay", OPT_ANTI_REPLAY, '-', "Switch on anti-replay protection (default)"},
915	{"no_anti_replay", OPT_NO_ANTI_REPLAY, '-', "Switch off anti-replay protection"},
916	{"http_server_binmode", OPT_HTTP_SERVER_BINMODE, '-', "opening files in binary mode when acting as http server (-WWW and -HTTP)"},
917	{"no_ca_names", OPT_NOCANAMES, '-',
918	"Disable TLS Extension CA Names"},
919	{"stateless", OPT_STATELESS, '-', "Require TLSv1.3 cookies"},
920	#ifndef OPENSSL_NO_SSL3
921	{"ssl3", OPT_SSL3, '-', "Just talk SSLv3"},
922	#endif
923	#ifndef OPENSSL_NO_TLS1
924	{"tls1", OPT_TLS1, '-', "Just talk TLSv1"},
925	#endif
926	#ifndef OPENSSL_NO_TLS1_1
927	{"tls1_1", OPT_TLS1_1, '-', "Just talk TLSv1.1"},
928	#endif
929	#ifndef OPENSSL_NO_TLS1_2
930	{"tls1_2", OPT_TLS1_2, '-', "just talk TLSv1.2"},
931	#endif
932	#ifndef OPENSSL_NO_TLS1_3
933	{"tls1_3", OPT_TLS1_3, '-', "just talk TLSv1.3"},
934	#endif
935	#ifndef OPENSSL_NO_DTLS
936	{"dtls", OPT_DTLS, '-', "Use any DTLS version"},
937	{"listen", OPT_LISTEN, '-',
938	"Listen for a DTLS ClientHello with a cookie and then connect"},
939	#endif
940	#ifndef OPENSSL_NO_DTLS1
941	{"dtls1", OPT_DTLS1, '-', "Just talk DTLSv1"},
942	#endif
943	#ifndef OPENSSL_NO_DTLS1_2
944	{"dtls1_2", OPT_DTLS1_2, '-', "Just talk DTLSv1.2"},
945	#endif
946	#ifndef OPENSSL_NO_SCTP
947	{"sctp", OPT_SCTP, '-', "Use SCTP"},
948	{"sctp_label_bug", OPT_SCTP_LABEL_BUG, '-', "Enable SCTP label length bug"},
949	#endif
950	#ifndef OPENSSL_NO_SRTP
951	{"use_srtp", OPT_SRTP_PROFILES, 's',
952	"Offer SRTP key management with a colon-separated profile list"},
953	#endif
954	{"no_dhe", OPT_NO_DHE, '-', "Disable ephemeral DH"},
955	#ifndef OPENSSL_NO_NEXTPROTONEG
956	{"nextprotoneg", OPT_NEXTPROTONEG, 's',
957	"Set the advertised protocols for the NPN extension (comma-separated list)"},
958	#endif
959	{"alpn", OPT_ALPN, 's',
960	"Set the advertised protocols for the ALPN extension (comma-separated list)"},
961	#ifndef OPENSSL_NO_KTLS
962	{"sendfile", OPT_SENDFILE, '-', "Use sendfile to response file with -WWW"},
963	#endif
964
965	OPT_R_OPTIONS,
966	OPT_S_OPTIONS,
967	OPT_V_OPTIONS,
968	OPT_X_OPTIONS,
969	OPT_PROV_OPTIONS,
970	{NULL}
971	};
972
973	#define IS_PROT_FLAG(o) \
974	(o == OPT_SSL3 \|\| o == OPT_TLS1 \|\| o == OPT_TLS1_1 \|\| o == OPT_TLS1_2 \
975	\|\| o == OPT_TLS1_3 \|\| o == OPT_DTLS \|\| o == OPT_DTLS1 \|\| o == OPT_DTLS1_2)
976
977	int s_server_main(int argc, char *argv[])
978	{
979	ENGINE *engine = NULL;
980	EVP_PKEY s_key = NULL, s_dkey = NULL;
981	SSL_CONF_CTX *cctx = NULL;
982	const SSL_METHOD *meth = TLS_server_method();
983	SSL_EXCERT *exc = NULL;
984	STACK_OF(OPENSSL_STRING) *ssl_args = NULL;
985	STACK_OF(X509) s_chain = NULL, s_dchain = NULL;
986	STACK_OF(X509_CRL) *crls = NULL;
987	X509 s_cert = NULL, s_dcert = NULL;
988	X509_VERIFY_PARAM *vpm = NULL;
989	const char CApath = NULL, CAfile = NULL, *CAstore = NULL;
990	const char chCApath = NULL, chCAfile = NULL, *chCAstore = NULL;
991	char dpassarg = NULL, dpass = NULL;
992	char passarg = NULL, pass = NULL;
993	char vfyCApath = NULL, vfyCAfile = NULL, *vfyCAstore = NULL;
994	char crl_file = NULL, prog;
995	#ifdef AF_UNIX
996	int unlink_unix_path = 0;
997	#endif
998	do_server_cb server_cb;
999	int vpmtouched = 0, build_chain = 0, no_cache = 0, ext_cache = 0;
1000	char *dhfile = NULL;
1001	int no_dhe = 0;
1002	int nocert = 0, ret = 1;
1003	int noCApath = 0, noCAfile = 0, noCAstore = 0;
1004	int s_cert_format = FORMAT_UNDEF, s_key_format = FORMAT_UNDEF;
1005	int s_dcert_format = FORMAT_UNDEF, s_dkey_format = FORMAT_UNDEF;
1006	int rev = 0, naccept = -1, sdebug = 0;
1007	int socket_family = AF_UNSPEC, socket_type = SOCK_STREAM, protocol = 0;
1008	int state = 0, crl_format = FORMAT_UNDEF, crl_download = 0;
1009	char *host = NULL;
1010	char *port = NULL;
1011	unsigned char *context = NULL;
1012	OPTION_CHOICE o;
1013	EVP_PKEY *s_key2 = NULL;
1014	X509 *s_cert2 = NULL;
1015	tlsextctx tlsextcbp = { NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING };
1016	const char *ssl_config = NULL;
1017	int read_buf_len = 0;
1018	#ifndef OPENSSL_NO_NEXTPROTONEG
1019	const char *next_proto_neg_in = NULL;
1020	tlsextnextprotoctx next_proto = { NULL, 0 };
1021	#endif
1022	const char *alpn_in = NULL;
1023	tlsextalpnctx alpn_ctx = { NULL, 0 };
1024	#ifndef OPENSSL_NO_PSK
1025	/* by default do not send a PSK identity hint */
1026	char *psk_identity_hint = NULL;
1027	#endif
1028	char *p;
1029	#ifndef OPENSSL_NO_SRP
1030	char *srpuserseed = NULL;
1031	char *srp_verifier_file = NULL;
1032	#endif
1033	#ifndef OPENSSL_NO_SRTP
1034	char *srtp_profiles = NULL;
1035	#endif
1036	int min_version = 0, max_version = 0, prot_opt = 0, no_prot_opt = 0;
1037	int s_server_verify = SSL_VERIFY_NONE;
1038	int s_server_session_id_context = 1; /* anything will do */
1039	const char s_cert_file = TEST_CERT, s_key_file = NULL, *s_chain_file = NULL;
1040	const char s_cert_file2 = TEST_CERT2, s_key_file2 = NULL;
1041	char s_dcert_file = NULL, s_dkey_file = NULL, *s_dchain_file = NULL;
1042	#ifndef OPENSSL_NO_OCSP
1043	int s_tlsextstatus = 0;
1044	#endif
1045	int no_resume_ephemeral = 0;
1046	unsigned int max_send_fragment = 0;
1047	unsigned int split_send_fragment = 0, max_pipelines = 0;
1048	const char *s_serverinfo_file = NULL;
1049	const char *keylog_file = NULL;
1050	int max_early_data = -1, recv_max_early_data = -1;
1051	char *psksessf = NULL;
1052	int no_ca_names = 0;
1053	#ifndef OPENSSL_NO_SCTP
1054	int sctp_label_bug = 0;
1055	#endif
1056	int ignore_unexpected_eof = 0;
1057
1058	/* Init of few remaining global variables */
1059	local_argc = argc;
1060	local_argv = argv;
1061
1062	ctx = ctx2 = NULL;
1063	s_nbio = s_nbio_test = 0;
1064	www = 0;
1065	bio_s_out = NULL;
1066	s_debug = 0;
1067	s_msg = 0;
1068	s_quiet = 0;
1069	s_brief = 0;
1070	async = 0;
1071	use_sendfile = 0;
1072
1073	port = OPENSSL_strdup(PORT);
1074	cctx = SSL_CONF_CTX_new();
1075	vpm = X509_VERIFY_PARAM_new();
1076	if (port == NULL \|\| cctx == NULL \|\| vpm == NULL)
1077	goto end;
1078	SSL_CONF_CTX_set_flags(cctx,
1079	SSL_CONF_FLAG_SERVER \| SSL_CONF_FLAG_CMDLINE);
1080
1081	prog = opt_init(argc, argv, s_server_options);
1082	while ((o = opt_next()) != OPT_EOF) {
1083	if (IS_PROT_FLAG(o) && ++prot_opt > 1) {
1084	BIO_printf(bio_err, "Cannot supply multiple protocol flags\n");
1085	goto end;
1086	}
1087	if (IS_NO_PROT_FLAG(o))
1088	no_prot_opt++;
1089	if (prot_opt == 1 && no_prot_opt) {
1090	BIO_printf(bio_err,
1091	"Cannot supply both a protocol flag and '-no_<prot>'\n");
1092	goto end;
1093	}
1094	switch (o) {
1095	case OPT_EOF:
1096	case OPT_ERR:
1097	opthelp:
1098	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
1099	goto end;
1100	case OPT_HELP:
1101	opt_help(s_server_options);
1102	ret = 0;
1103	goto end;
1104
1105	case OPT_4:
1106	#ifdef AF_UNIX
1107	if (socket_family == AF_UNIX) {
1108	OPENSSL_free(host); host = NULL;
1109	OPENSSL_free(port); port = NULL;
1110	}
1111	#endif
1112	socket_family = AF_INET;
1113	break;
1114	case OPT_6:
1115	if (1) {
1116	#ifdef AF_INET6
1117	#ifdef AF_UNIX
1118	if (socket_family == AF_UNIX) {
1119	OPENSSL_free(host); host = NULL;
1120	OPENSSL_free(port); port = NULL;
1121	}
1122	#endif
1123	socket_family = AF_INET6;
1124	} else {
1125	#endif
1126	BIO_printf(bio_err, "%s: IPv6 domain sockets unsupported\n", prog);
1127	goto end;
1128	}
1129	break;
1130	case OPT_PORT:
1131	#ifdef AF_UNIX
1132	if (socket_family == AF_UNIX) {
1133	socket_family = AF_UNSPEC;
1134	}
1135	#endif
1136	OPENSSL_free(port); port = NULL;
1137	OPENSSL_free(host); host = NULL;
1138	if (BIO_parse_hostserv(opt_arg(), NULL, &port, BIO_PARSE_PRIO_SERV) < 1) {
1139	BIO_printf(bio_err,
1140	"%s: -port argument malformed or ambiguous\n",
1141	port);
1142	goto end;
1143	}
1144	break;
1145	case OPT_ACCEPT:
1146	#ifdef AF_UNIX
1147	if (socket_family == AF_UNIX) {
1148	socket_family = AF_UNSPEC;
1149	}
1150	#endif
1151	OPENSSL_free(port); port = NULL;
1152	OPENSSL_free(host); host = NULL;
1153	if (BIO_parse_hostserv(opt_arg(), &host, &port, BIO_PARSE_PRIO_SERV) < 1) {
1154	BIO_printf(bio_err,
1155	"%s: -accept argument malformed or ambiguous\n",
1156	port);
1157	goto end;
1158	}
1159	break;
1160	#ifdef AF_UNIX
1161	case OPT_UNIX:
1162	socket_family = AF_UNIX;
1163	OPENSSL_free(host); host = OPENSSL_strdup(opt_arg());
1164	if (host == NULL)
1165	goto end;
1166	OPENSSL_free(port); port = NULL;
1167	break;
1168	case OPT_UNLINK:
1169	unlink_unix_path = 1;
1170	break;
1171	#endif
1172	case OPT_NACCEPT:
1173	naccept = atol(opt_arg());
1174	break;
1175	case OPT_VERIFY:
1176	s_server_verify = SSL_VERIFY_PEER \| SSL_VERIFY_CLIENT_ONCE;
1177	verify_args.depth = atoi(opt_arg());
1178	if (!s_quiet)
1179	BIO_printf(bio_err, "verify depth is %d\n", verify_args.depth);
1180	break;
1181	case OPT_UPPER_V_VERIFY:
1182	s_server_verify =
1183	SSL_VERIFY_PEER \| SSL_VERIFY_FAIL_IF_NO_PEER_CERT \|
1184	SSL_VERIFY_CLIENT_ONCE;
1185	verify_args.depth = atoi(opt_arg());
1186	if (!s_quiet)
1187	BIO_printf(bio_err,
1188	"verify depth is %d, must return a certificate\n",
1189	verify_args.depth);
1190	break;
1191	case OPT_CONTEXT:
1192	context = (unsigned char *)opt_arg();
1193	break;
1194	case OPT_CERT:
1195	s_cert_file = opt_arg();
1196	break;
1197	case OPT_NAMEOPT:
1198	if (!set_nameopt(opt_arg()))
1199	goto end;
1200	break;
1201	case OPT_CRL:
1202	crl_file = opt_arg();
1203	break;
1204	case OPT_CRL_DOWNLOAD:
1205	crl_download = 1;
1206	break;
1207	case OPT_SERVERINFO:
1208	s_serverinfo_file = opt_arg();
1209	break;
1210	case OPT_CERTFORM:
1211	if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_cert_format))
1212	goto opthelp;
1213	break;
1214	case OPT_KEY:
1215	s_key_file = opt_arg();
1216	break;
1217	case OPT_KEYFORM:
1218	if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_key_format))
1219	goto opthelp;
1220	break;
1221	case OPT_PASS:
1222	passarg = opt_arg();
1223	break;
1224	case OPT_CERT_CHAIN:
1225	s_chain_file = opt_arg();
1226	break;
1227	case OPT_DHPARAM:
1228	dhfile = opt_arg();
1229	break;
1230	case OPT_DCERTFORM:
1231	if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_dcert_format))
1232	goto opthelp;
1233	break;
1234	case OPT_DCERT:
1235	s_dcert_file = opt_arg();
1236	break;
1237	case OPT_DKEYFORM:
1238	if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_dkey_format))
1239	goto opthelp;
1240	break;
1241	case OPT_DPASS:
1242	dpassarg = opt_arg();
1243	break;
1244	case OPT_DKEY:
1245	s_dkey_file = opt_arg();
1246	break;
1247	case OPT_DCERT_CHAIN:
1248	s_dchain_file = opt_arg();
1249	break;
1250	case OPT_NOCERT:
1251	nocert = 1;
1252	break;
1253	case OPT_CAPATH:
1254	CApath = opt_arg();
1255	break;
1256	case OPT_NOCAPATH:
1257	noCApath = 1;
1258	break;
1259	case OPT_CHAINCAPATH:
1260	chCApath = opt_arg();
1261	break;
1262	case OPT_VERIFYCAPATH:
1263	vfyCApath = opt_arg();
1264	break;
1265	case OPT_CASTORE:
1266	CAstore = opt_arg();
1267	break;
1268	case OPT_NOCASTORE:
1269	noCAstore = 1;
1270	break;
1271	case OPT_CHAINCASTORE:
1272	chCAstore = opt_arg();
1273	break;
1274	case OPT_VERIFYCASTORE:
1275	vfyCAstore = opt_arg();
1276	break;
1277	case OPT_NO_CACHE:
1278	no_cache = 1;
1279	break;
1280	case OPT_EXT_CACHE:
1281	ext_cache = 1;
1282	break;
1283	case OPT_CRLFORM:
1284	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &crl_format))
1285	goto opthelp;
1286	break;
1287	case OPT_S_CASES:
1288	case OPT_S_NUM_TICKETS:
1289	case OPT_ANTI_REPLAY:
1290	case OPT_NO_ANTI_REPLAY:
1291	if (ssl_args == NULL)
1292	ssl_args = sk_OPENSSL_STRING_new_null();
1293	if (ssl_args == NULL
1294	\|\| !sk_OPENSSL_STRING_push(ssl_args, opt_flag())
1295	\|\| !sk_OPENSSL_STRING_push(ssl_args, opt_arg())) {
1296	BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
1297	goto end;
1298	}
1299	break;
1300	case OPT_V_CASES:
1301	if (!opt_verify(o, vpm))
1302	goto end;
1303	vpmtouched++;
1304	break;
1305	case OPT_X_CASES:
1306	if (!args_excert(o, &exc))
1307	goto end;
1308	break;
1309	case OPT_VERIFY_RET_ERROR:
1310	verify_args.return_error = 1;
1311	break;
1312	case OPT_VERIFY_QUIET:
1313	verify_args.quiet = 1;
1314	break;
1315	case OPT_BUILD_CHAIN:
1316	build_chain = 1;
1317	break;
1318	case OPT_CAFILE:
1319	CAfile = opt_arg();
1320	break;
1321	case OPT_NOCAFILE:
1322	noCAfile = 1;
1323	break;
1324	case OPT_CHAINCAFILE:
1325	chCAfile = opt_arg();
1326	break;
1327	case OPT_VERIFYCAFILE:
1328	vfyCAfile = opt_arg();
1329	break;
1330	case OPT_NBIO:
1331	s_nbio = 1;
1332	break;
1333	case OPT_NBIO_TEST:
1334	s_nbio = s_nbio_test = 1;
1335	break;
1336	case OPT_IGN_EOF:
1337	s_ign_eof = 1;
1338	break;
1339	case OPT_NO_IGN_EOF:
1340	s_ign_eof = 0;
1341	break;
1342	case OPT_DEBUG:
1343	s_debug = 1;
1344	break;
1345	case OPT_TLSEXTDEBUG:
1346	s_tlsextdebug = 1;
1347	break;
1348	case OPT_STATUS:
1349	#ifndef OPENSSL_NO_OCSP
1350	s_tlsextstatus = 1;
1351	#endif
1352	break;
1353	case OPT_STATUS_VERBOSE:
1354	#ifndef OPENSSL_NO_OCSP
1355	s_tlsextstatus = tlscstatp.verbose = 1;
1356	#endif
1357	break;
1358	case OPT_STATUS_TIMEOUT:
1359	#ifndef OPENSSL_NO_OCSP
1360	s_tlsextstatus = 1;
1361	tlscstatp.timeout = atoi(opt_arg());
1362	#endif
1363	break;
1364	case OPT_PROXY:
1365	#ifndef OPENSSL_NO_OCSP
1366	tlscstatp.proxy = opt_arg();
1367	#endif
1368	break;
1369	case OPT_NO_PROXY:
1370	#ifndef OPENSSL_NO_OCSP
1371	tlscstatp.no_proxy = opt_arg();
1372	#endif
1373	break;
1374	case OPT_STATUS_URL:
1375	#ifndef OPENSSL_NO_OCSP
1376	s_tlsextstatus = 1;
1377	if (!OSSL_HTTP_parse_url(opt_arg(), &tlscstatp.use_ssl, NULL,
1378	&tlscstatp.host, &tlscstatp.port, NULL,
1379	&tlscstatp.path, NULL, NULL)) {
1380	BIO_printf(bio_err, "Error parsing -status_url argument\n");
1381	goto end;
1382	}
1383	#endif
1384	break;
1385	case OPT_STATUS_FILE:
1386	#ifndef OPENSSL_NO_OCSP
1387	s_tlsextstatus = 1;
1388	tlscstatp.respin = opt_arg();
1389	#endif
1390	break;
1391	case OPT_MSG:
1392	s_msg = 1;
1393	break;
1394	case OPT_MSGFILE:
1395	bio_s_msg = BIO_new_file(opt_arg(), "w");
1396	if (bio_s_msg == NULL) {
1397	BIO_printf(bio_err, "Error writing file %s\n", opt_arg());
1398	goto end;
1399	}
1400	break;
1401	case OPT_TRACE:
1402	#ifndef OPENSSL_NO_SSL_TRACE
1403	s_msg = 2;
1404	#endif
1405	break;
1406	case OPT_SECURITY_DEBUG:
1407	sdebug = 1;
1408	break;
1409	case OPT_SECURITY_DEBUG_VERBOSE:
1410	sdebug = 2;
1411	break;
1412	case OPT_STATE:
1413	state = 1;
1414	break;
1415	case OPT_CRLF:
1416	s_crlf = 1;
1417	break;
1418	case OPT_QUIET:
1419	s_quiet = 1;
1420	break;
1421	case OPT_BRIEF:
1422	s_quiet = s_brief = verify_args.quiet = 1;
1423	break;
1424	case OPT_NO_DHE:
1425	no_dhe = 1;
1426	break;
1427	case OPT_NO_RESUME_EPHEMERAL:
1428	no_resume_ephemeral = 1;
1429	break;
1430	case OPT_PSK_IDENTITY:
1431	psk_identity = opt_arg();
1432	break;
1433	case OPT_PSK_HINT:
1434	#ifndef OPENSSL_NO_PSK
1435	psk_identity_hint = opt_arg();
1436	#endif
1437	break;
1438	case OPT_PSK:
1439	for (p = psk_key = opt_arg(); *p; p++) {
1440	if (isxdigit(_UC(*p)))
1441	continue;
1442	BIO_printf(bio_err, "Not a hex number '%s'\n", psk_key);
1443	goto end;
1444	}
1445	break;
1446	case OPT_PSK_SESS:
1447	psksessf = opt_arg();
1448	break;
1449	case OPT_SRPVFILE:
1450	#ifndef OPENSSL_NO_SRP
1451	srp_verifier_file = opt_arg();
1452	if (min_version < TLS1_VERSION)
1453	min_version = TLS1_VERSION;
1454	#endif
1455	break;
1456	case OPT_SRPUSERSEED:
1457	#ifndef OPENSSL_NO_SRP
1458	srpuserseed = opt_arg();
1459	if (min_version < TLS1_VERSION)
1460	min_version = TLS1_VERSION;
1461	#endif
1462	break;
1463	case OPT_REV:
1464	rev = 1;
1465	break;
1466	case OPT_WWW:
1467	www = 1;
1468	break;
1469	case OPT_UPPER_WWW:
1470	www = 2;
1471	break;
1472	case OPT_HTTP:
1473	www = 3;
1474	break;
1475	case OPT_SSL_CONFIG:
1476	ssl_config = opt_arg();
1477	break;
1478	case OPT_SSL3:
1479	min_version = SSL3_VERSION;
1480	max_version = SSL3_VERSION;
1481	break;
1482	case OPT_TLS1_3:
1483	min_version = TLS1_3_VERSION;
1484	max_version = TLS1_3_VERSION;
1485	break;
1486	case OPT_TLS1_2:
1487	min_version = TLS1_2_VERSION;
1488	max_version = TLS1_2_VERSION;
1489	break;
1490	case OPT_TLS1_1:
1491	min_version = TLS1_1_VERSION;
1492	max_version = TLS1_1_VERSION;
1493	break;
1494	case OPT_TLS1:
1495	min_version = TLS1_VERSION;
1496	max_version = TLS1_VERSION;
1497	break;
1498	case OPT_DTLS:
1499	#ifndef OPENSSL_NO_DTLS
1500	meth = DTLS_server_method();
1501	socket_type = SOCK_DGRAM;
1502	#endif
1503	break;
1504	case OPT_DTLS1:
1505	#ifndef OPENSSL_NO_DTLS
1506	meth = DTLS_server_method();
1507	min_version = DTLS1_VERSION;
1508	max_version = DTLS1_VERSION;
1509	socket_type = SOCK_DGRAM;
1510	#endif
1511	break;
1512	case OPT_DTLS1_2:
1513	#ifndef OPENSSL_NO_DTLS
1514	meth = DTLS_server_method();
1515	min_version = DTLS1_2_VERSION;
1516	max_version = DTLS1_2_VERSION;
1517	socket_type = SOCK_DGRAM;
1518	#endif
1519	break;
1520	case OPT_SCTP:
1521	#ifndef OPENSSL_NO_SCTP
1522	protocol = IPPROTO_SCTP;
1523	#endif
1524	break;
1525	case OPT_SCTP_LABEL_BUG:
1526	#ifndef OPENSSL_NO_SCTP
1527	sctp_label_bug = 1;
1528	#endif
1529	break;
1530	case OPT_TIMEOUT:
1531	#ifndef OPENSSL_NO_DTLS
1532	enable_timeouts = 1;
1533	#endif
1534	break;
1535	case OPT_MTU:
1536	#ifndef OPENSSL_NO_DTLS
1537	socket_mtu = atol(opt_arg());
1538	#endif
1539	break;
1540	case OPT_LISTEN:
1541	#ifndef OPENSSL_NO_DTLS
1542	dtlslisten = 1;
1543	#endif
1544	break;
1545	case OPT_STATELESS:
1546	stateless = 1;
1547	break;
1548	case OPT_ID_PREFIX:
1549	session_id_prefix = opt_arg();
1550	break;
1551	case OPT_ENGINE:
1552	#ifndef OPENSSL_NO_ENGINE
1553	engine = setup_engine(opt_arg(), s_debug);
1554	#endif
1555	break;
1556	case OPT_R_CASES:
1557	if (!opt_rand(o))
1558	goto end;
1559	break;
1560	case OPT_PROV_CASES:
1561	if (!opt_provider(o))
1562	goto end;
1563	break;
1564	case OPT_SERVERNAME:
1565	tlsextcbp.servername = opt_arg();
1566	break;
1567	case OPT_SERVERNAME_FATAL:
1568	tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL;
1569	break;
1570	case OPT_CERT2:
1571	s_cert_file2 = opt_arg();
1572	break;
1573	case OPT_KEY2:
1574	s_key_file2 = opt_arg();
1575	break;
1576	case OPT_NEXTPROTONEG:
1577	# ifndef OPENSSL_NO_NEXTPROTONEG
1578	next_proto_neg_in = opt_arg();
1579	#endif
1580	break;
1581	case OPT_ALPN:
1582	alpn_in = opt_arg();
1583	break;
1584	case OPT_SRTP_PROFILES:
1585	#ifndef OPENSSL_NO_SRTP
1586	srtp_profiles = opt_arg();
1587	#endif
1588	break;
1589	case OPT_KEYMATEXPORT:
1590	keymatexportlabel = opt_arg();
1591	break;
1592	case OPT_KEYMATEXPORTLEN:
1593	keymatexportlen = atoi(opt_arg());
1594	break;
1595	case OPT_ASYNC:
1596	async = 1;
1597	break;
1598	case OPT_MAX_SEND_FRAG:
1599	max_send_fragment = atoi(opt_arg());
1600	break;
1601	case OPT_SPLIT_SEND_FRAG:
1602	split_send_fragment = atoi(opt_arg());
1603	break;
1604	case OPT_MAX_PIPELINES:
1605	max_pipelines = atoi(opt_arg());
1606	break;
1607	case OPT_READ_BUF:
1608	read_buf_len = atoi(opt_arg());
1609	break;
1610	case OPT_KEYLOG_FILE:
1611	keylog_file = opt_arg();
1612	break;
1613	case OPT_MAX_EARLY:
1614	max_early_data = atoi(opt_arg());
1615	if (max_early_data < 0) {
1616	BIO_printf(bio_err, "Invalid value for max_early_data\n");
1617	goto end;
1618	}
1619	break;
1620	case OPT_RECV_MAX_EARLY:
1621	recv_max_early_data = atoi(opt_arg());
1622	if (recv_max_early_data < 0) {
1623	BIO_printf(bio_err, "Invalid value for recv_max_early_data\n");
1624	goto end;
1625	}
1626	break;
1627	case OPT_EARLY_DATA:
1628	early_data = 1;
1629	if (max_early_data == -1)
1630	max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
1631	break;
1632	case OPT_HTTP_SERVER_BINMODE:
1633	http_server_binmode = 1;
1634	break;
1635	case OPT_NOCANAMES:
1636	no_ca_names = 1;
1637	break;
1638	case OPT_SENDFILE:
1639	#ifndef OPENSSL_NO_KTLS
1640	use_sendfile = 1;
1641	#endif
1642	break;
1643	case OPT_IGNORE_UNEXPECTED_EOF:
1644	ignore_unexpected_eof = 1;
1645	break;
1646	}
1647	}
1648
1649	/* No extra arguments. */
1650	argc = opt_num_rest();
1651	if (argc != 0)
1652	goto opthelp;
1653
1654	if (!app_RAND_load())
1655	goto end;
1656
1657	#ifndef OPENSSL_NO_NEXTPROTONEG
1658	if (min_version == TLS1_3_VERSION && next_proto_neg_in != NULL) {
1659	BIO_printf(bio_err, "Cannot supply -nextprotoneg with TLSv1.3\n");
1660	goto opthelp;
1661	}
1662	#endif
1663	#ifndef OPENSSL_NO_DTLS
1664	if (www && socket_type == SOCK_DGRAM) {
1665	BIO_printf(bio_err, "Can't use -HTTP, -www or -WWW with DTLS\n");
1666	goto end;
1667	}
1668
1669	if (dtlslisten && socket_type != SOCK_DGRAM) {
1670	BIO_printf(bio_err, "Can only use -listen with DTLS\n");
1671	goto end;
1672	}
1673	#endif
1674
1675	if (stateless && socket_type != SOCK_STREAM) {
1676	BIO_printf(bio_err, "Can only use --stateless with TLS\n");
1677	goto end;
1678	}
1679
1680	#ifdef AF_UNIX
1681	if (socket_family == AF_UNIX && socket_type != SOCK_STREAM) {
1682	BIO_printf(bio_err,
1683	"Can't use unix sockets and datagrams together\n");
1684	goto end;
1685	}
1686	#endif
1687	if (early_data && (www > 0 \|\| rev)) {
1688	BIO_printf(bio_err,
1689	"Can't use -early_data in combination with -www, -WWW, -HTTP, or -rev\n");
1690	goto end;
1691	}
1692
1693	#ifndef OPENSSL_NO_SCTP
1694	if (protocol == IPPROTO_SCTP) {
1695	if (socket_type != SOCK_DGRAM) {
1696	BIO_printf(bio_err, "Can't use -sctp without DTLS\n");
1697	goto end;
1698	}
1699	/* SCTP is unusual. It uses DTLS over a SOCK_STREAM protocol */
1700	socket_type = SOCK_STREAM;
1701	}
1702	#endif
1703
1704	#ifndef OPENSSL_NO_KTLS
1705	if (use_sendfile && www <= 1) {
1706	BIO_printf(bio_err, "Can't use -sendfile without -WWW or -HTTP\n");
1707	goto end;
1708	}
1709	#endif
1710
1711	if (!app_passwd(passarg, dpassarg, &pass, &dpass)) {
1712	BIO_printf(bio_err, "Error getting password\n");
1713	goto end;
1714	}
1715
1716	if (s_key_file == NULL)
1717	s_key_file = s_cert_file;
1718
1719	if (s_key_file2 == NULL)
1720	s_key_file2 = s_cert_file2;
1721
1722	if (!load_excert(&exc))
1723	goto end;
1724
1725	if (nocert == 0) {
1726	s_key = load_key(s_key_file, s_key_format, 0, pass, engine,
1727	"server certificate private key");
1728	if (s_key == NULL)
1729	goto end;
1730
1731	s_cert = load_cert_pass(s_cert_file, s_cert_format, 1, pass,
1732	"server certificate");
1733
1734	if (s_cert == NULL)
1735	goto end;
1736	if (s_chain_file != NULL) {
1737	if (!load_certs(s_chain_file, 0, &s_chain, NULL,
1738	"server certificate chain"))
1739	goto end;
1740	}
1741
1742	if (tlsextcbp.servername != NULL) {
1743	s_key2 = load_key(s_key_file2, s_key_format, 0, pass, engine,
1744	"second server certificate private key");
1745	if (s_key2 == NULL)
1746	goto end;
1747
1748	s_cert2 = load_cert_pass(s_cert_file2, s_cert_format, 1, pass,
1749	"second server certificate");
1750
1751	if (s_cert2 == NULL)
1752	goto end;
1753	}
1754	}
1755	#if !defined(OPENSSL_NO_NEXTPROTONEG)
1756	if (next_proto_neg_in) {
1757	next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1758	if (next_proto.data == NULL)
1759	goto end;
1760	}
1761	#endif
1762	alpn_ctx.data = NULL;
1763	if (alpn_in) {
1764	alpn_ctx.data = next_protos_parse(&alpn_ctx.len, alpn_in);
1765	if (alpn_ctx.data == NULL)
1766	goto end;
1767	}
1768
1769	if (crl_file != NULL) {
1770	X509_CRL *crl;
1771	crl = load_crl(crl_file, crl_format, 0, "CRL");
1772	if (crl == NULL)
1773	goto end;
1774	crls = sk_X509_CRL_new_null();
1775	if (crls == NULL \|\| !sk_X509_CRL_push(crls, crl)) {
1776	BIO_puts(bio_err, "Error adding CRL\n");
1777	ERR_print_errors(bio_err);
1778	X509_CRL_free(crl);
1779	goto end;
1780	}
1781	}
1782
1783	if (s_dcert_file != NULL) {
1784
1785	if (s_dkey_file == NULL)
1786	s_dkey_file = s_dcert_file;
1787
1788	s_dkey = load_key(s_dkey_file, s_dkey_format,
1789	0, dpass, engine, "second certificate private key");
1790	if (s_dkey == NULL)
1791	goto end;
1792
1793	s_dcert = load_cert_pass(s_dcert_file, s_dcert_format, 1, dpass,
1794	"second server certificate");
1795
1796	if (s_dcert == NULL) {
1797	ERR_print_errors(bio_err);
1798	goto end;
1799	}
1800	if (s_dchain_file != NULL) {
1801	if (!load_certs(s_dchain_file, 0, &s_dchain, NULL,
1802	"second server certificate chain"))
1803	goto end;
1804	}
1805
1806	}
1807
1808	if (bio_s_out == NULL) {
1809	if (s_quiet && !s_debug) {
1810	bio_s_out = BIO_new(BIO_s_null());
1811	if (s_msg && bio_s_msg == NULL) {
1812	bio_s_msg = dup_bio_out(FORMAT_TEXT);
1813	if (bio_s_msg == NULL) {
1814	BIO_printf(bio_err, "Out of memory\n");
1815	goto end;
1816	}
1817	}
1818	} else {
1819	bio_s_out = dup_bio_out(FORMAT_TEXT);
1820	}
1821	}
1822
1823	if (bio_s_out == NULL)
1824	goto end;
1825
1826	if (nocert) {
1827	s_cert_file = NULL;
1828	s_key_file = NULL;
1829	s_dcert_file = NULL;
1830	s_dkey_file = NULL;
1831	s_cert_file2 = NULL;
1832	s_key_file2 = NULL;
1833	}
1834
1835	ctx = SSL_CTX_new_ex(app_get0_libctx(), app_get0_propq(), meth);
1836	if (ctx == NULL) {
1837	ERR_print_errors(bio_err);
1838	goto end;
1839	}
1840
1841	SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY);
1842
1843	if (sdebug)
1844	ssl_ctx_security_debug(ctx, sdebug);
1845
1846	if (!config_ctx(cctx, ssl_args, ctx))
1847	goto end;
1848
1849	if (ssl_config) {
1850	if (SSL_CTX_config(ctx, ssl_config) == 0) {
1851	BIO_printf(bio_err, "Error using configuration \"%s\"\n",
1852	ssl_config);
1853	ERR_print_errors(bio_err);
1854	goto end;
1855	}
1856	}
1857	#ifndef OPENSSL_NO_SCTP
1858	if (protocol == IPPROTO_SCTP && sctp_label_bug == 1)
1859	SSL_CTX_set_mode(ctx, SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG);
1860	#endif
1861
1862	if (min_version != 0
1863	&& SSL_CTX_set_min_proto_version(ctx, min_version) == 0)
1864	goto end;
1865	if (max_version != 0
1866	&& SSL_CTX_set_max_proto_version(ctx, max_version) == 0)
1867	goto end;
1868
1869	if (session_id_prefix) {
1870	if (strlen(session_id_prefix) >= 32)
1871	BIO_printf(bio_err,
1872	"warning: id_prefix is too long, only one new session will be possible\n");
1873	if (!SSL_CTX_set_generate_session_id(ctx, generate_session_id)) {
1874	BIO_printf(bio_err, "error setting 'id_prefix'\n");
1875	ERR_print_errors(bio_err);
1876	goto end;
1877	}
1878	BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
1879	}
1880	if (exc != NULL)
1881	ssl_ctx_set_excert(ctx, exc);
1882
1883	if (state)
1884	SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
1885	if (no_cache)
1886	SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
1887	else if (ext_cache)
1888	init_session_cache_ctx(ctx);
1889	else
1890	SSL_CTX_sess_set_cache_size(ctx, 128);
1891
1892	if (async) {
1893	SSL_CTX_set_mode(ctx, SSL_MODE_ASYNC);
1894	}
1895
1896	if (no_ca_names) {
1897	SSL_CTX_set_options(ctx, SSL_OP_DISABLE_TLSEXT_CA_NAMES);
1898	}
1899
1900	if (ignore_unexpected_eof)
1901	SSL_CTX_set_options(ctx, SSL_OP_IGNORE_UNEXPECTED_EOF);
1902
1903	if (max_send_fragment > 0
1904	&& !SSL_CTX_set_max_send_fragment(ctx, max_send_fragment)) {
1905	BIO_printf(bio_err, "%s: Max send fragment size %u is out of permitted range\n",
1906	prog, max_send_fragment);
1907	goto end;
1908	}
1909
1910	if (split_send_fragment > 0
1911	&& !SSL_CTX_set_split_send_fragment(ctx, split_send_fragment)) {
1912	BIO_printf(bio_err, "%s: Split send fragment size %u is out of permitted range\n",
1913	prog, split_send_fragment);
1914	goto end;
1915	}
1916	if (max_pipelines > 0
1917	&& !SSL_CTX_set_max_pipelines(ctx, max_pipelines)) {
1918	BIO_printf(bio_err, "%s: Max pipelines %u is out of permitted range\n",
1919	prog, max_pipelines);
1920	goto end;
1921	}
1922
1923	if (read_buf_len > 0) {
1924	SSL_CTX_set_default_read_buffer_len(ctx, read_buf_len);
1925	}
1926	#ifndef OPENSSL_NO_SRTP
1927	if (srtp_profiles != NULL) {
1928	/* Returns 0 on success! */
1929	if (SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles) != 0) {
1930	BIO_printf(bio_err, "Error setting SRTP profile\n");
1931	ERR_print_errors(bio_err);
1932	goto end;
1933	}
1934	}
1935	#endif
1936
1937	if (!ctx_set_verify_locations(ctx, CAfile, noCAfile, CApath, noCApath,
1938	CAstore, noCAstore)) {
1939	ERR_print_errors(bio_err);
1940	goto end;
1941	}
1942	if (vpmtouched && !SSL_CTX_set1_param(ctx, vpm)) {
1943	BIO_printf(bio_err, "Error setting verify params\n");
1944	ERR_print_errors(bio_err);
1945	goto end;
1946	}
1947
1948	ssl_ctx_add_crls(ctx, crls, 0);
1949
1950	if (!ssl_load_stores(ctx,
1951	vfyCApath, vfyCAfile, vfyCAstore,
1952	chCApath, chCAfile, chCAstore,
1953	crls, crl_download)) {
1954	BIO_printf(bio_err, "Error loading store locations\n");
1955	ERR_print_errors(bio_err);
1956	goto end;
1957	}
1958
1959	if (s_cert2) {
1960	ctx2 = SSL_CTX_new_ex(app_get0_libctx(), app_get0_propq(), meth);
1961	if (ctx2 == NULL) {
1962	ERR_print_errors(bio_err);
1963	goto end;
1964	}
1965	}
1966
1967	if (ctx2 != NULL) {
1968	BIO_printf(bio_s_out, "Setting secondary ctx parameters\n");
1969
1970	if (sdebug)
1971	ssl_ctx_security_debug(ctx2, sdebug);
1972
1973	if (session_id_prefix) {
1974	if (strlen(session_id_prefix) >= 32)
1975	BIO_printf(bio_err,
1976	"warning: id_prefix is too long, only one new session will be possible\n");
1977	if (!SSL_CTX_set_generate_session_id(ctx2, generate_session_id)) {
1978	BIO_printf(bio_err, "error setting 'id_prefix'\n");
1979	ERR_print_errors(bio_err);
1980	goto end;
1981	}
1982	BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
1983	}
1984	if (exc != NULL)
1985	ssl_ctx_set_excert(ctx2, exc);
1986
1987	if (state)
1988	SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback);
1989
1990	if (no_cache)
1991	SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF);
1992	else if (ext_cache)
1993	init_session_cache_ctx(ctx2);
1994	else
1995	SSL_CTX_sess_set_cache_size(ctx2, 128);
1996
1997	if (async)
1998	SSL_CTX_set_mode(ctx2, SSL_MODE_ASYNC);
1999
2000	if (!ctx_set_verify_locations(ctx2, CAfile, noCAfile, CApath,
2001	noCApath, CAstore, noCAstore)) {
2002	ERR_print_errors(bio_err);
2003	goto end;
2004	}
2005	if (vpmtouched && !SSL_CTX_set1_param(ctx2, vpm)) {
2006	BIO_printf(bio_err, "Error setting verify params\n");
2007	ERR_print_errors(bio_err);
2008	goto end;
2009	}
2010
2011	ssl_ctx_add_crls(ctx2, crls, 0);
2012	if (!config_ctx(cctx, ssl_args, ctx2))
2013	goto end;
2014	}
2015	#ifndef OPENSSL_NO_NEXTPROTONEG
2016	if (next_proto.data)
2017	SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb,
2018	&next_proto);
2019	#endif
2020	if (alpn_ctx.data)
2021	SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx);
2022
2023	if (!no_dhe) {
2024	EVP_PKEY *dhpkey = NULL;
2025
2026	if (dhfile != NULL)
2027	dhpkey = load_keyparams(dhfile, FORMAT_UNDEF, 0, "DH", "DH parameters");
2028	else if (s_cert_file != NULL)
2029	dhpkey = load_keyparams_suppress(s_cert_file, FORMAT_UNDEF, 0, "DH",
2030	"DH parameters", 1);
2031
2032	if (dhpkey != NULL) {
2033	BIO_printf(bio_s_out, "Setting temp DH parameters\n");
2034	} else {
2035	BIO_printf(bio_s_out, "Using default temp DH parameters\n");
2036	}
2037	(void)BIO_flush(bio_s_out);
2038
2039	if (dhpkey == NULL) {
2040	SSL_CTX_set_dh_auto(ctx, 1);
2041	} else {
2042	/*
2043	* We need 2 references: one for use by ctx and one for use by
2044	* ctx2
2045	*/
2046	if (!EVP_PKEY_up_ref(dhpkey)) {
2047	EVP_PKEY_free(dhpkey);
2048	goto end;
2049	}
2050	if (!SSL_CTX_set0_tmp_dh_pkey(ctx, dhpkey)) {
2051	BIO_puts(bio_err, "Error setting temp DH parameters\n");
2052	ERR_print_errors(bio_err);
2053	/* Free 2 references */
2054	EVP_PKEY_free(dhpkey);
2055	EVP_PKEY_free(dhpkey);
2056	goto end;
2057	}
2058	}
2059
2060	if (ctx2 != NULL) {
2061	if (dhfile != NULL) {
2062	EVP_PKEY *dhpkey2 = load_keyparams_suppress(s_cert_file2,
2063	FORMAT_UNDEF,
2064	0, "DH",
2065	"DH parameters", 1);
2066
2067	if (dhpkey2 != NULL) {
2068	BIO_printf(bio_s_out, "Setting temp DH parameters\n");
2069	(void)BIO_flush(bio_s_out);
2070
2071	EVP_PKEY_free(dhpkey);
2072	dhpkey = dhpkey2;
2073	}
2074	}
2075	if (dhpkey == NULL) {
2076	SSL_CTX_set_dh_auto(ctx2, 1);
2077	} else if (!SSL_CTX_set0_tmp_dh_pkey(ctx2, dhpkey)) {
2078	BIO_puts(bio_err, "Error setting temp DH parameters\n");
2079	ERR_print_errors(bio_err);
2080	EVP_PKEY_free(dhpkey);
2081	goto end;
2082	}
2083	dhpkey = NULL;
2084	}
2085	EVP_PKEY_free(dhpkey);
2086	}
2087
2088	if (!set_cert_key_stuff(ctx, s_cert, s_key, s_chain, build_chain))
2089	goto end;
2090
2091	if (s_serverinfo_file != NULL
2092	&& !SSL_CTX_use_serverinfo_file(ctx, s_serverinfo_file)) {
2093	ERR_print_errors(bio_err);
2094	goto end;
2095	}
2096
2097	if (ctx2 != NULL
2098	&& !set_cert_key_stuff(ctx2, s_cert2, s_key2, NULL, build_chain))
2099	goto end;
2100
2101	if (s_dcert != NULL) {
2102	if (!set_cert_key_stuff(ctx, s_dcert, s_dkey, s_dchain, build_chain))
2103	goto end;
2104	}
2105
2106	if (no_resume_ephemeral) {
2107	SSL_CTX_set_not_resumable_session_callback(ctx,
2108	not_resumable_sess_cb);
2109
2110	if (ctx2 != NULL)
2111	SSL_CTX_set_not_resumable_session_callback(ctx2,
2112	not_resumable_sess_cb);
2113	}
2114	#ifndef OPENSSL_NO_PSK
2115	if (psk_key != NULL) {
2116	if (s_debug)
2117	BIO_printf(bio_s_out, "PSK key given, setting server callback\n");
2118	SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
2119	}
2120
2121	if (psk_identity_hint != NULL) {
2122	if (min_version == TLS1_3_VERSION) {
2123	BIO_printf(bio_s_out, "PSK warning: there is NO identity hint in TLSv1.3\n");
2124	} else {
2125	if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint)) {
2126	BIO_printf(bio_err, "error setting PSK identity hint to context\n");
2127	ERR_print_errors(bio_err);
2128	goto end;
2129	}
2130	}
2131	}
2132	#endif
2133	if (psksessf != NULL) {
2134	BIO *stmp = BIO_new_file(psksessf, "r");
2135
2136	if (stmp == NULL) {
2137	BIO_printf(bio_err, "Can't open PSK session file %s\n", psksessf);
2138	ERR_print_errors(bio_err);
2139	goto end;
2140	}
2141	psksess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
2142	BIO_free(stmp);
2143	if (psksess == NULL) {
2144	BIO_printf(bio_err, "Can't read PSK session file %s\n", psksessf);
2145	ERR_print_errors(bio_err);
2146	goto end;
2147	}
2148
2149	}
2150
2151	if (psk_key != NULL \|\| psksess != NULL)
2152	SSL_CTX_set_psk_find_session_callback(ctx, psk_find_session_cb);
2153
2154	SSL_CTX_set_verify(ctx, s_server_verify, verify_callback);
2155	if (!SSL_CTX_set_session_id_context(ctx,
2156	(void *)&s_server_session_id_context,
2157	sizeof(s_server_session_id_context))) {
2158	BIO_printf(bio_err, "error setting session id context\n");
2159	ERR_print_errors(bio_err);
2160	goto end;
2161	}
2162
2163	/* Set DTLS cookie generation and verification callbacks */
2164	SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback);
2165	SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback);
2166
2167	/* Set TLS1.3 cookie generation and verification callbacks */
2168	SSL_CTX_set_stateless_cookie_generate_cb(ctx, generate_stateless_cookie_callback);
2169	SSL_CTX_set_stateless_cookie_verify_cb(ctx, verify_stateless_cookie_callback);
2170
2171	if (ctx2 != NULL) {
2172	SSL_CTX_set_verify(ctx2, s_server_verify, verify_callback);
2173	if (!SSL_CTX_set_session_id_context(ctx2,
2174	(void *)&s_server_session_id_context,
2175	sizeof(s_server_session_id_context))) {
2176	BIO_printf(bio_err, "error setting session id context\n");
2177	ERR_print_errors(bio_err);
2178	goto end;
2179	}
2180	tlsextcbp.biodebug = bio_s_out;
2181	SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
2182	SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
2183	SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
2184	SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
2185	}
2186
2187	#ifndef OPENSSL_NO_SRP
2188	if (srp_verifier_file != NULL) {
2189	if (!set_up_srp_verifier_file(ctx, &srp_callback_parm, srpuserseed,
2190	srp_verifier_file))
2191	goto end;
2192	} else
2193	#endif
2194	if (CAfile != NULL) {
2195	SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(CAfile));
2196
2197	if (ctx2)
2198	SSL_CTX_set_client_CA_list(ctx2, SSL_load_client_CA_file(CAfile));
2199	}
2200	#ifndef OPENSSL_NO_OCSP
2201	if (s_tlsextstatus) {
2202	SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
2203	SSL_CTX_set_tlsext_status_arg(ctx, &tlscstatp);
2204	if (ctx2) {
2205	SSL_CTX_set_tlsext_status_cb(ctx2, cert_status_cb);
2206	SSL_CTX_set_tlsext_status_arg(ctx2, &tlscstatp);
2207	}
2208	}
2209	#endif
2210	if (set_keylog_file(ctx, keylog_file))
2211	goto end;
2212
2213	if (max_early_data >= 0)
2214	SSL_CTX_set_max_early_data(ctx, max_early_data);
2215	if (recv_max_early_data >= 0)
2216	SSL_CTX_set_recv_max_early_data(ctx, recv_max_early_data);
2217
2218	if (rev)
2219	server_cb = rev_body;
2220	else if (www)
2221	server_cb = www_body;
2222	else
2223	server_cb = sv_body;
2224	#ifdef AF_UNIX
2225	if (socket_family == AF_UNIX
2226	&& unlink_unix_path)
2227	unlink(host);
2228	#endif
2229	do_server(&accept_socket, host, port, socket_family, socket_type, protocol,
2230	server_cb, context, naccept, bio_s_out);
2231	print_stats(bio_s_out, ctx);
2232	ret = 0;
2233	end:
2234	SSL_CTX_free(ctx);
2235	SSL_SESSION_free(psksess);
2236	set_keylog_file(NULL, NULL);
2237	X509_free(s_cert);
2238	sk_X509_CRL_pop_free(crls, X509_CRL_free);
2239	X509_free(s_dcert);
2240	EVP_PKEY_free(s_key);
2241	EVP_PKEY_free(s_dkey);
2242	sk_X509_pop_free(s_chain, X509_free);
2243	sk_X509_pop_free(s_dchain, X509_free);
2244	OPENSSL_free(pass);
2245	OPENSSL_free(dpass);
2246	OPENSSL_free(host);
2247	OPENSSL_free(port);
2248	X509_VERIFY_PARAM_free(vpm);
2249	free_sessions();
2250	OPENSSL_free(tlscstatp.host);
2251	OPENSSL_free(tlscstatp.port);
2252	OPENSSL_free(tlscstatp.path);
2253	SSL_CTX_free(ctx2);
2254	X509_free(s_cert2);
2255	EVP_PKEY_free(s_key2);
2256	#ifndef OPENSSL_NO_NEXTPROTONEG
2257	OPENSSL_free(next_proto.data);
2258	#endif
2259	OPENSSL_free(alpn_ctx.data);
2260	ssl_excert_free(exc);
2261	sk_OPENSSL_STRING_free(ssl_args);
2262	SSL_CONF_CTX_free(cctx);
2263	release_engine(engine);
2264	BIO_free(bio_s_out);
2265	bio_s_out = NULL;
2266	BIO_free(bio_s_msg);
2267	bio_s_msg = NULL;
2268	#ifdef CHARSET_EBCDIC
2269	BIO_meth_free(methods_ebcdic);
2270	#endif
2271	return ret;
2272	}
2273
2274	static void print_stats(BIO bio, SSL_CTX ssl_ctx)
2275	{
2276	BIO_printf(bio, "%4ld items in the session cache\n",
2277	SSL_CTX_sess_number(ssl_ctx));
2278	BIO_printf(bio, "%4ld client connects (SSL_connect())\n",
2279	SSL_CTX_sess_connect(ssl_ctx));
2280	BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n",
2281	SSL_CTX_sess_connect_renegotiate(ssl_ctx));
2282	BIO_printf(bio, "%4ld client connects that finished\n",
2283	SSL_CTX_sess_connect_good(ssl_ctx));
2284	BIO_printf(bio, "%4ld server accepts (SSL_accept())\n",
2285	SSL_CTX_sess_accept(ssl_ctx));
2286	BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n",
2287	SSL_CTX_sess_accept_renegotiate(ssl_ctx));
2288	BIO_printf(bio, "%4ld server accepts that finished\n",
2289	SSL_CTX_sess_accept_good(ssl_ctx));
2290	BIO_printf(bio, "%4ld session cache hits\n", SSL_CTX_sess_hits(ssl_ctx));
2291	BIO_printf(bio, "%4ld session cache misses\n",
2292	SSL_CTX_sess_misses(ssl_ctx));
2293	BIO_printf(bio, "%4ld session cache timeouts\n",
2294	SSL_CTX_sess_timeouts(ssl_ctx));
2295	BIO_printf(bio, "%4ld callback cache hits\n",
2296	SSL_CTX_sess_cb_hits(ssl_ctx));
2297	BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n",
2298	SSL_CTX_sess_cache_full(ssl_ctx),
2299	SSL_CTX_sess_get_cache_size(ssl_ctx));
2300	}
2301
2302	static long int count_reads_callback(BIO bio, int cmd, const char argp, size_t len,
2303	int argi, long argl, int ret, size_t *processed)
2304	{
2305	unsigned int p_counter = (unsigned int )BIO_get_callback_arg(bio);
2306
2307	switch (cmd) {
2308	case BIO_CB_READ: /* No break here */
2309	case BIO_CB_GETS:
2310	if (p_counter != NULL)
2311	++*p_counter;
2312	break;
2313	default:
2314	break;
2315	}
2316
2317	if (s_debug) {
2318	BIO_set_callback_arg(bio, (char *)bio_s_out);
2319	ret = (int)bio_dump_callback(bio, cmd, argp, len, argi, argl, ret, processed);
2320	BIO_set_callback_arg(bio, (char *)p_counter);
2321	}
2322
2323	return ret;
2324	}
2325
2326	static int sv_body(int s, int stype, int prot, unsigned char *context)
2327	{
2328	char *buf = NULL;
2329	fd_set readfds;
2330	int ret = 1, width;
2331	int k, i;
2332	unsigned long l;
2333	SSL *con = NULL;
2334	BIO *sbio;
2335	struct timeval timeout;
2336	#if !(defined(OPENSSL_SYS_WINDOWS) \|\| defined(OPENSSL_SYS_MSDOS))
2337	struct timeval *timeoutp;
2338	#endif
2339	#ifndef OPENSSL_NO_DTLS
2340	# ifndef OPENSSL_NO_SCTP
2341	int isdtls = (stype == SOCK_DGRAM \|\| prot == IPPROTO_SCTP);
2342	# else
2343	int isdtls = (stype == SOCK_DGRAM);
2344	# endif
2345	#endif
2346
2347	buf = app_malloc(bufsize, "server buffer");
2348	if (s_nbio) {
2349	if (!BIO_socket_nbio(s, 1))
2350	ERR_print_errors(bio_err);
2351	else if (!s_quiet)
2352	BIO_printf(bio_err, "Turned on non blocking io\n");
2353	}
2354
2355	con = SSL_new(ctx);
2356	if (con == NULL) {
2357	ret = -1;
2358	goto err;
2359	}
2360
2361	if (s_tlsextdebug) {
2362	SSL_set_tlsext_debug_callback(con, tlsext_cb);
2363	SSL_set_tlsext_debug_arg(con, bio_s_out);
2364	}
2365
2366	if (context != NULL
2367	&& !SSL_set_session_id_context(con, context,
2368	strlen((char *)context))) {
2369	BIO_printf(bio_err, "Error setting session id context\n");
2370	ret = -1;
2371	goto err;
2372	}
2373
2374	if (!SSL_clear(con)) {
2375	BIO_printf(bio_err, "Error clearing SSL connection\n");
2376	ret = -1;
2377	goto err;
2378	}
2379	#ifndef OPENSSL_NO_DTLS
2380	if (isdtls) {
2381	# ifndef OPENSSL_NO_SCTP
2382	if (prot == IPPROTO_SCTP)
2383	sbio = BIO_new_dgram_sctp(s, BIO_NOCLOSE);
2384	else
2385	# endif
2386	sbio = BIO_new_dgram(s, BIO_NOCLOSE);
2387	if (sbio == NULL) {
2388	BIO_printf(bio_err, "Unable to create BIO\n");
2389	ERR_print_errors(bio_err);
2390	goto err;
2391	}
2392
2393	if (enable_timeouts) {
2394	timeout.tv_sec = 0;
2395	timeout.tv_usec = DGRAM_RCV_TIMEOUT;
2396	BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
2397
2398	timeout.tv_sec = 0;
2399	timeout.tv_usec = DGRAM_SND_TIMEOUT;
2400	BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
2401	}
2402
2403	if (socket_mtu) {
2404	if (socket_mtu < DTLS_get_link_min_mtu(con)) {
2405	BIO_printf(bio_err, "MTU too small. Must be at least %ld\n",
2406	DTLS_get_link_min_mtu(con));
2407	ret = -1;
2408	BIO_free(sbio);
2409	goto err;
2410	}
2411	SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
2412	if (!DTLS_set_link_mtu(con, socket_mtu)) {
2413	BIO_printf(bio_err, "Failed to set MTU\n");
2414	ret = -1;
2415	BIO_free(sbio);
2416	goto err;
2417	}
2418	} else
2419	/* want to do MTU discovery */
2420	BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
2421
2422	# ifndef OPENSSL_NO_SCTP
2423	if (prot != IPPROTO_SCTP)
2424	# endif
2425	/* Turn on cookie exchange. Not necessary for SCTP */
2426	SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
2427	} else
2428	#endif
2429	sbio = BIO_new_socket(s, BIO_NOCLOSE);
2430
2431	if (sbio == NULL) {
2432	BIO_printf(bio_err, "Unable to create BIO\n");
2433	ERR_print_errors(bio_err);
2434	goto err;
2435	}
2436
2437	if (s_nbio_test) {
2438	BIO *test;
2439
2440	test = BIO_new(BIO_f_nbio_test());
2441	if (test == NULL) {
2442	BIO_printf(bio_err, "Unable to create BIO\n");
2443	ret = -1;
2444	BIO_free(sbio);
2445	goto err;
2446	}
2447
2448	sbio = BIO_push(test, sbio);
2449	}
2450
2451	SSL_set_bio(con, sbio, sbio);
2452	SSL_set_accept_state(con);
2453	/* SSL_set_fd(con,s); */
2454
2455	BIO_set_callback_ex(SSL_get_rbio(con), count_reads_callback);
2456	if (s_msg) {
2457	#ifndef OPENSSL_NO_SSL_TRACE
2458	if (s_msg == 2)
2459	SSL_set_msg_callback(con, SSL_trace);
2460	else
2461	#endif
2462	SSL_set_msg_callback(con, msg_cb);
2463	SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
2464	}
2465
2466	if (s_tlsextdebug) {
2467	SSL_set_tlsext_debug_callback(con, tlsext_cb);
2468	SSL_set_tlsext_debug_arg(con, bio_s_out);
2469	}
2470
2471	if (early_data) {
2472	int write_header = 1, edret = SSL_READ_EARLY_DATA_ERROR;
2473	size_t readbytes;
2474
2475	while (edret != SSL_READ_EARLY_DATA_FINISH) {
2476	for (;;) {
2477	edret = SSL_read_early_data(con, buf, bufsize, &readbytes);
2478	if (edret != SSL_READ_EARLY_DATA_ERROR)
2479	break;
2480
2481	switch (SSL_get_error(con, 0)) {
2482	case SSL_ERROR_WANT_WRITE:
2483	case SSL_ERROR_WANT_ASYNC:
2484	case SSL_ERROR_WANT_READ:
2485	/* Just keep trying - busy waiting */
2486	continue;
2487	default:
2488	BIO_printf(bio_err, "Error reading early data\n");
2489	ERR_print_errors(bio_err);
2490	goto err;
2491	}
2492	}
2493	if (readbytes > 0) {
2494	if (write_header) {
2495	BIO_printf(bio_s_out, "Early data received:\n");
2496	write_header = 0;
2497	}
2498	raw_write_stdout(buf, (unsigned int)readbytes);
2499	(void)BIO_flush(bio_s_out);
2500	}
2501	}
2502	if (write_header) {
2503	if (SSL_get_early_data_status(con) == SSL_EARLY_DATA_NOT_SENT)
2504	BIO_printf(bio_s_out, "No early data received\n");
2505	else
2506	BIO_printf(bio_s_out, "Early data was rejected\n");
2507	} else {
2508	BIO_printf(bio_s_out, "\nEnd of early data\n");
2509	}
2510	if (SSL_is_init_finished(con))
2511	print_connection_info(con);
2512	}
2513
2514	if (fileno_stdin() > s)
2515	width = fileno_stdin() + 1;
2516	else
2517	width = s + 1;
2518	for (;;) {
2519	int read_from_terminal;
2520	int read_from_sslcon;
2521
2522	read_from_terminal = 0;
2523	read_from_sslcon = SSL_has_pending(con)
2524	\|\| (async && SSL_waiting_for_async(con));
2525
2526	if (!read_from_sslcon) {
2527	FD_ZERO(&readfds);
2528	#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
2529	openssl_fdset(fileno_stdin(), &readfds);
2530	#endif
2531	openssl_fdset(s, &readfds);
2532	/*
2533	* Note: under VMS with SOCKETSHR the second parameter is
2534	* currently of type (int *) whereas under other systems it is
2535	* (void *) if you don't have a cast it will choke the compiler:
2536	* if you do have a cast then you can either go for (int *) or
2537	* (void *).
2538	*/
2539	#if defined(OPENSSL_SYS_WINDOWS) \|\| defined(OPENSSL_SYS_MSDOS)
2540	/*
2541	* Under DOS (non-djgpp) and Windows we can't select on stdin:
2542	* only on sockets. As a workaround we timeout the select every
2543	* second and check for any keypress. In a proper Windows
2544	* application we wouldn't do this because it is inefficient.
2545	*/
2546	timeout.tv_sec = 1;
2547	timeout.tv_usec = 0;
2548	i = select(width, (void *)&readfds, NULL, NULL, &timeout);
2549	if (has_stdin_waiting())
2550	read_from_terminal = 1;
2551	if ((i < 0) \|\| (!i && !read_from_terminal))
2552	continue;
2553	#else
2554	if (SSL_is_dtls(con) && DTLSv1_get_timeout(con, &timeout))
2555	timeoutp = &timeout;
2556	else
2557	timeoutp = NULL;
2558
2559	i = select(width, (void *)&readfds, NULL, NULL, timeoutp);
2560
2561	if ((SSL_is_dtls(con)) && DTLSv1_handle_timeout(con) > 0)
2562	BIO_printf(bio_err, "TIMEOUT occurred\n");
2563
2564	if (i <= 0)
2565	continue;
2566	if (FD_ISSET(fileno_stdin(), &readfds))
2567	read_from_terminal = 1;
2568	#endif
2569	if (FD_ISSET(s, &readfds))
2570	read_from_sslcon = 1;
2571	}
2572	if (read_from_terminal) {
2573	if (s_crlf) {
2574	int j, lf_num;
2575
2576	i = raw_read_stdin(buf, bufsize / 2);
2577	lf_num = 0;
2578	/* both loops are skipped when i <= 0 */
2579	for (j = 0; j < i; j++)
2580	if (buf[j] == '\n')
2581	lf_num++;
2582	for (j = i - 1; j >= 0; j--) {
2583	buf[j + lf_num] = buf[j];
2584	if (buf[j] == '\n') {
2585	lf_num--;
2586	i++;
2587	buf[j + lf_num] = '\r';
2588	}
2589	}
2590	assert(lf_num == 0);
2591	} else {
2592	i = raw_read_stdin(buf, bufsize);
2593	}
2594
2595	if (!s_quiet && !s_brief) {
2596	if ((i <= 0) \|\| (buf[0] == 'Q')) {
2597	BIO_printf(bio_s_out, "DONE\n");
2598	(void)BIO_flush(bio_s_out);
2599	BIO_closesocket(s);
2600	close_accept_socket();
2601	ret = -11;
2602	goto err;
2603	}
2604	if ((i <= 0) \|\| (buf[0] == 'q')) {
2605	BIO_printf(bio_s_out, "DONE\n");
2606	(void)BIO_flush(bio_s_out);
2607	if (SSL_version(con) != DTLS1_VERSION)
2608	BIO_closesocket(s);
2609	/*
2610	* close_accept_socket(); ret= -11;
2611	*/
2612	goto err;
2613	}
2614	if ((buf[0] == 'r') && ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2615	SSL_renegotiate(con);
2616	i = SSL_do_handshake(con);
2617	printf("SSL_do_handshake -> %d\n", i);
2618	i = 0; /* 13; */
2619	continue;
2620	}
2621	if ((buf[0] == 'R') && ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2622	SSL_set_verify(con,
2623	SSL_VERIFY_PEER \| SSL_VERIFY_CLIENT_ONCE,
2624	NULL);
2625	SSL_renegotiate(con);
2626	i = SSL_do_handshake(con);
2627	printf("SSL_do_handshake -> %d\n", i);
2628	i = 0; /* 13; */
2629	continue;
2630	}
2631	if ((buf[0] == 'K' \|\| buf[0] == 'k')
2632	&& ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2633	SSL_key_update(con, buf[0] == 'K' ?
2634	SSL_KEY_UPDATE_REQUESTED
2635	: SSL_KEY_UPDATE_NOT_REQUESTED);
2636	i = SSL_do_handshake(con);
2637	printf("SSL_do_handshake -> %d\n", i);
2638	i = 0;
2639	continue;
2640	}
2641	if (buf[0] == 'c' && ((buf[1] == '\n') \|\| (buf[1] == '\r'))) {
2642	SSL_set_verify(con, SSL_VERIFY_PEER, NULL);
2643	i = SSL_verify_client_post_handshake(con);
2644	if (i == 0) {
2645	printf("Failed to initiate request\n");
2646	ERR_print_errors(bio_err);
2647	} else {
2648	i = SSL_do_handshake(con);
2649	printf("SSL_do_handshake -> %d\n", i);
2650	i = 0;
2651	}
2652	continue;
2653	}
2654	if (buf[0] == 'P') {
2655	static const char str[] = "Lets print some clear text\n";
2656	BIO_write(SSL_get_wbio(con), str, sizeof(str) -1);
2657	}
2658	if (buf[0] == 'S') {
2659	print_stats(bio_s_out, SSL_get_SSL_CTX(con));
2660	}
2661	}
2662	#ifdef CHARSET_EBCDIC
2663	ebcdic2ascii(buf, buf, i);
2664	#endif
2665	l = k = 0;
2666	for (;;) {
2667	/* should do a select for the write */
2668	#ifdef RENEG
2669	static count = 0;
2670	if (++count == 100) {
2671	count = 0;
2672	SSL_renegotiate(con);
2673	}
2674	#endif
2675	k = SSL_write(con, &(buf[l]), (unsigned int)i);
2676	#ifndef OPENSSL_NO_SRP
2677	while (SSL_get_error(con, k) == SSL_ERROR_WANT_X509_LOOKUP) {
2678	BIO_printf(bio_s_out, "LOOKUP renego during write\n");
2679
2680	lookup_srp_user(&srp_callback_parm, bio_s_out);
2681
2682	k = SSL_write(con, &(buf[l]), (unsigned int)i);
2683	}
2684	#endif
2685	switch (SSL_get_error(con, k)) {
2686	case SSL_ERROR_NONE:
2687	break;
2688	case SSL_ERROR_WANT_ASYNC:
2689	BIO_printf(bio_s_out, "Write BLOCK (Async)\n");
2690	(void)BIO_flush(bio_s_out);
2691	wait_for_async(con);
2692	break;
2693	case SSL_ERROR_WANT_WRITE:
2694	case SSL_ERROR_WANT_READ:
2695	case SSL_ERROR_WANT_X509_LOOKUP:
2696	BIO_printf(bio_s_out, "Write BLOCK\n");
2697	(void)BIO_flush(bio_s_out);
2698	break;
2699	case SSL_ERROR_WANT_ASYNC_JOB:
2700	/*
2701	* This shouldn't ever happen in s_server. Treat as an error
2702	*/
2703	case SSL_ERROR_SYSCALL:
2704	case SSL_ERROR_SSL:
2705	BIO_printf(bio_s_out, "ERROR\n");
2706	(void)BIO_flush(bio_s_out);
2707	ERR_print_errors(bio_err);
2708	ret = 1;
2709	goto err;
2710	/* break; */
2711	case SSL_ERROR_ZERO_RETURN:
2712	BIO_printf(bio_s_out, "DONE\n");
2713	(void)BIO_flush(bio_s_out);
2714	ret = 1;
2715	goto err;
2716	}
2717	if (k > 0) {
2718	l += k;
2719	i -= k;
2720	}
2721	if (i <= 0)
2722	break;
2723	}
2724	}
2725	if (read_from_sslcon) {
2726	/*
2727	* init_ssl_connection handles all async events itself so if we're
2728	* waiting for async then we shouldn't go back into
2729	* init_ssl_connection
2730	*/
2731	if ((!async \|\| !SSL_waiting_for_async(con))
2732	&& !SSL_is_init_finished(con)) {
2733	/*
2734	* Count number of reads during init_ssl_connection.
2735	* It helps us to distinguish configuration errors from errors
2736	* caused by a client.
2737	*/
2738	unsigned int read_counter = 0;
2739
2740	BIO_set_callback_arg(SSL_get_rbio(con), (char *)&read_counter);
2741	i = init_ssl_connection(con);
2742	BIO_set_callback_arg(SSL_get_rbio(con), NULL);
2743
2744	/*
2745	* If initialization fails without reads, then
2746	* there was a fatal error in configuration.
2747	*/
2748	if (i <= 0 && read_counter == 0) {
2749	ret = -1;
2750	goto err;
2751	}
2752	if (i < 0) {
2753	ret = 0;
2754	goto err;
2755	} else if (i == 0) {
2756	ret = 1;
2757	goto err;
2758	}
2759	} else {
2760	again:
2761	i = SSL_read(con, (char *)buf, bufsize);
2762	#ifndef OPENSSL_NO_SRP
2763	while (SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
2764	BIO_printf(bio_s_out, "LOOKUP renego during read\n");
2765
2766	lookup_srp_user(&srp_callback_parm, bio_s_out);
2767
2768	i = SSL_read(con, (char *)buf, bufsize);
2769	}
2770	#endif
2771	switch (SSL_get_error(con, i)) {
2772	case SSL_ERROR_NONE:
2773	#ifdef CHARSET_EBCDIC
2774	ascii2ebcdic(buf, buf, i);
2775	#endif
2776	raw_write_stdout(buf, (unsigned int)i);
2777	(void)BIO_flush(bio_s_out);
2778	if (SSL_has_pending(con))
2779	goto again;
2780	break;
2781	case SSL_ERROR_WANT_ASYNC:
2782	BIO_printf(bio_s_out, "Read BLOCK (Async)\n");
2783	(void)BIO_flush(bio_s_out);
2784	wait_for_async(con);
2785	break;
2786	case SSL_ERROR_WANT_WRITE:
2787	case SSL_ERROR_WANT_READ:
2788	BIO_printf(bio_s_out, "Read BLOCK\n");
2789	(void)BIO_flush(bio_s_out);
2790	break;
2791	case SSL_ERROR_WANT_ASYNC_JOB:
2792	/*
2793	* This shouldn't ever happen in s_server. Treat as an error
2794	*/
2795	case SSL_ERROR_SYSCALL:
2796	case SSL_ERROR_SSL:
2797	BIO_printf(bio_s_out, "ERROR\n");
2798	(void)BIO_flush(bio_s_out);
2799	ERR_print_errors(bio_err);
2800	ret = 1;
2801	goto err;
2802	case SSL_ERROR_ZERO_RETURN:
2803	BIO_printf(bio_s_out, "DONE\n");
2804	(void)BIO_flush(bio_s_out);
2805	ret = 1;
2806	goto err;
2807	}
2808	}
2809	}
2810	}
2811	err:
2812	if (con != NULL) {
2813	BIO_printf(bio_s_out, "shutting down SSL\n");
2814	do_ssl_shutdown(con);
2815	SSL_free(con);
2816	}
2817	BIO_printf(bio_s_out, "CONNECTION CLOSED\n");
2818	OPENSSL_clear_free(buf, bufsize);
2819	return ret;
2820	}
2821
2822	static void close_accept_socket(void)
2823	{
2824	BIO_printf(bio_err, "shutdown accept socket\n");
2825	if (accept_socket >= 0) {
2826	BIO_closesocket(accept_socket);
2827	}
2828	}
2829
2830	static int is_retryable(SSL *con, int i)
2831	{
2832	int err = SSL_get_error(con, i);
2833
2834	/* If it's not a fatal error, it must be retryable */
2835	return (err != SSL_ERROR_SSL)
2836	&& (err != SSL_ERROR_SYSCALL)
2837	&& (err != SSL_ERROR_ZERO_RETURN);
2838	}
2839
2840	static int init_ssl_connection(SSL *con)
2841	{
2842	int i;
2843	long verify_err;
2844	int retry = 0;
2845
2846	if (dtlslisten \|\| stateless) {
2847	BIO_ADDR *client = NULL;
2848
2849	if (dtlslisten) {
2850	if ((client = BIO_ADDR_new()) == NULL) {
2851	BIO_printf(bio_err, "ERROR - memory\n");
2852	return 0;
2853	}
2854	i = DTLSv1_listen(con, client);
2855	} else {
2856	i = SSL_stateless(con);
2857	}
2858	if (i > 0) {
2859	BIO *wbio;
2860	int fd = -1;
2861
2862	if (dtlslisten) {
2863	wbio = SSL_get_wbio(con);
2864	if (wbio) {
2865	BIO_get_fd(wbio, &fd);
2866	}
2867
2868	if (!wbio \|\| BIO_connect(fd, client, 0) == 0) {
2869	BIO_printf(bio_err, "ERROR - unable to connect\n");
2870	BIO_ADDR_free(client);
2871	return 0;
2872	}
2873
2874	(void)BIO_ctrl_set_connected(wbio, client);
2875	BIO_ADDR_free(client);
2876	dtlslisten = 0;
2877	} else {
2878	stateless = 0;
2879	}
2880	i = SSL_accept(con);
2881	} else {
2882	BIO_ADDR_free(client);
2883	}
2884	} else {
2885	do {
2886	i = SSL_accept(con);
2887
2888	if (i <= 0)
2889	retry = is_retryable(con, i);
2890	#ifdef CERT_CB_TEST_RETRY
2891	{
2892	while (i <= 0
2893	&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP
2894	&& SSL_get_state(con) == TLS_ST_SR_CLNT_HELLO) {
2895	BIO_printf(bio_err,
2896	"LOOKUP from certificate callback during accept\n");
2897	i = SSL_accept(con);
2898	if (i <= 0)
2899	retry = is_retryable(con, i);
2900	}
2901	}
2902	#endif
2903
2904	#ifndef OPENSSL_NO_SRP
2905	while (i <= 0
2906	&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
2907	BIO_printf(bio_s_out, "LOOKUP during accept %s\n",
2908	srp_callback_parm.login);
2909
2910	lookup_srp_user(&srp_callback_parm, bio_s_out);
2911
2912	i = SSL_accept(con);
2913	if (i <= 0)
2914	retry = is_retryable(con, i);
2915	}
2916	#endif
2917	} while (i < 0 && SSL_waiting_for_async(con));
2918	}
2919
2920	if (i <= 0) {
2921	if (((dtlslisten \|\| stateless) && i == 0)
2922	\|\| (!dtlslisten && !stateless && retry)) {
2923	BIO_printf(bio_s_out, "DELAY\n");
2924	return 1;
2925	}
2926
2927	BIO_printf(bio_err, "ERROR\n");
2928
2929	verify_err = SSL_get_verify_result(con);
2930	if (verify_err != X509_V_OK) {
2931	BIO_printf(bio_err, "verify error:%s\n",
2932	X509_verify_cert_error_string(verify_err));
2933	}
2934	/* Always print any error messages */
2935	ERR_print_errors(bio_err);
2936	return 0;
2937	}
2938
2939	print_connection_info(con);
2940	return 1;
2941	}
2942
2943	static void print_connection_info(SSL *con)
2944	{
2945	const char *str;
2946	X509 *peer;
2947	char buf[BUFSIZ];
2948	#if !defined(OPENSSL_NO_NEXTPROTONEG)
2949	const unsigned char *next_proto_neg;
2950	unsigned next_proto_neg_len;
2951	#endif
2952	unsigned char *exportedkeymat;
2953	int i;
2954
2955	if (s_brief)
2956	print_ssl_summary(con);
2957
2958	PEM_write_bio_SSL_SESSION(bio_s_out, SSL_get_session(con));
2959
2960	peer = SSL_get0_peer_certificate(con);
2961	if (peer != NULL) {
2962	BIO_printf(bio_s_out, "Client certificate\n");
2963	PEM_write_bio_X509(bio_s_out, peer);
2964	dump_cert_text(bio_s_out, peer);
2965	peer = NULL;
2966	}
2967
2968	if (SSL_get_shared_ciphers(con, buf, sizeof(buf)) != NULL)
2969	BIO_printf(bio_s_out, "Shared ciphers:%s\n", buf);
2970	str = SSL_CIPHER_get_name(SSL_get_current_cipher(con));
2971	ssl_print_sigalgs(bio_s_out, con);
2972	#ifndef OPENSSL_NO_EC
2973	ssl_print_point_formats(bio_s_out, con);
2974	ssl_print_groups(bio_s_out, con, 0);
2975	#endif
2976	print_ca_names(bio_s_out, con);
2977	BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)");
2978
2979	#if !defined(OPENSSL_NO_NEXTPROTONEG)
2980	SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
2981	if (next_proto_neg) {
2982	BIO_printf(bio_s_out, "NEXTPROTO is ");
2983	BIO_write(bio_s_out, next_proto_neg, next_proto_neg_len);
2984	BIO_printf(bio_s_out, "\n");
2985	}
2986	#endif
2987	#ifndef OPENSSL_NO_SRTP
2988	{
2989	SRTP_PROTECTION_PROFILE *srtp_profile
2990	= SSL_get_selected_srtp_profile(con);
2991
2992	if (srtp_profile)
2993	BIO_printf(bio_s_out, "SRTP Extension negotiated, profile=%s\n",
2994	srtp_profile->name);
2995	}
2996	#endif
2997	if (SSL_session_reused(con))
2998	BIO_printf(bio_s_out, "Reused session-id\n");
2999	BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n",
3000	SSL_get_secure_renegotiation_support(con) ? "" : " NOT");
3001	if ((SSL_get_options(con) & SSL_OP_NO_RENEGOTIATION))
3002	BIO_printf(bio_s_out, "Renegotiation is DISABLED\n");
3003
3004	if (keymatexportlabel != NULL) {
3005	BIO_printf(bio_s_out, "Keying material exporter:\n");
3006	BIO_printf(bio_s_out, " Label: '%s'\n", keymatexportlabel);
3007	BIO_printf(bio_s_out, " Length: %i bytes\n", keymatexportlen);
3008	exportedkeymat = app_malloc(keymatexportlen, "export key");
3009	if (SSL_export_keying_material(con, exportedkeymat,
3010	keymatexportlen,
3011	keymatexportlabel,
3012	strlen(keymatexportlabel),
3013	NULL, 0, 0) <= 0) {
3014	BIO_printf(bio_s_out, " Error\n");
3015	} else {
3016	BIO_printf(bio_s_out, " Keying material: ");
3017	for (i = 0; i < keymatexportlen; i++)
3018	BIO_printf(bio_s_out, "%02X", exportedkeymat[i]);
3019	BIO_printf(bio_s_out, "\n");
3020	}
3021	OPENSSL_free(exportedkeymat);
3022	}
3023	#ifndef OPENSSL_NO_KTLS
3024	if (BIO_get_ktls_send(SSL_get_wbio(con)))
3025	BIO_printf(bio_err, "Using Kernel TLS for sending\n");
3026	if (BIO_get_ktls_recv(SSL_get_rbio(con)))
3027	BIO_printf(bio_err, "Using Kernel TLS for receiving\n");
3028	#endif
3029
3030	(void)BIO_flush(bio_s_out);
3031	}
3032
3033	static int www_body(int s, int stype, int prot, unsigned char *context)
3034	{
3035	char *buf = NULL;
3036	int ret = 1;
3037	int i, j, k, dot;
3038	SSL *con;
3039	const SSL_CIPHER *c;
3040	BIO io, ssl_bio, *sbio;
3041	#ifdef RENEG
3042	int total_bytes = 0;
3043	#endif
3044	int width;
3045	#ifndef OPENSSL_NO_KTLS
3046	int use_sendfile_for_req = use_sendfile;
3047	#endif
3048	fd_set readfds;
3049	const char *opmode;
3050	#ifdef CHARSET_EBCDIC
3051	BIO *filter;
3052	#endif
3053
3054	/* Set width for a select call if needed */
3055	width = s + 1;
3056
3057	/* as we use BIO_gets(), and it always null terminates data, we need
3058	* to allocate 1 byte longer buffer to fit the full 2^14 byte record */
3059	buf = app_malloc(bufsize + 1, "server www buffer");
3060	io = BIO_new(BIO_f_buffer());
3061	ssl_bio = BIO_new(BIO_f_ssl());
3062	if ((io == NULL) \|\| (ssl_bio == NULL))
3063	goto err;
3064
3065	if (s_nbio) {
3066	if (!BIO_socket_nbio(s, 1))
3067	ERR_print_errors(bio_err);
3068	else if (!s_quiet)
3069	BIO_printf(bio_err, "Turned on non blocking io\n");
3070	}
3071
3072	/* lets make the output buffer a reasonable size */
3073	if (BIO_set_write_buffer_size(io, bufsize) <= 0)
3074	goto err;
3075
3076	if ((con = SSL_new(ctx)) == NULL)
3077	goto err;
3078
3079	if (s_tlsextdebug) {
3080	SSL_set_tlsext_debug_callback(con, tlsext_cb);
3081	SSL_set_tlsext_debug_arg(con, bio_s_out);
3082	}
3083
3084	if (context != NULL
3085	&& !SSL_set_session_id_context(con, context,
3086	strlen((char *)context))) {
3087	SSL_free(con);
3088	goto err;
3089	}
3090
3091	sbio = BIO_new_socket(s, BIO_NOCLOSE);
3092	if (sbio == NULL) {
3093	SSL_free(con);
3094	goto err;
3095	}
3096
3097	if (s_nbio_test) {
3098	BIO *test;
3099
3100	test = BIO_new(BIO_f_nbio_test());
3101	if (test == NULL) {
3102	SSL_free(con);
3103	BIO_free(sbio);
3104	goto err;
3105	}
3106
3107	sbio = BIO_push(test, sbio);
3108	}
3109	SSL_set_bio(con, sbio, sbio);
3110	SSL_set_accept_state(con);
3111
3112	/* No need to free \|con\| after this. Done by BIO_free(ssl_bio) */
3113	BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
3114	BIO_push(io, ssl_bio);
3115	ssl_bio = NULL;
3116	#ifdef CHARSET_EBCDIC
3117	filter = BIO_new(BIO_f_ebcdic_filter());
3118	if (filter == NULL)
3119	goto err;
3120
3121	io = BIO_push(filter, io);
3122	#endif
3123
3124	if (s_debug) {
3125	BIO_set_callback_ex(SSL_get_rbio(con), bio_dump_callback);
3126	BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
3127	}
3128	if (s_msg) {
3129	#ifndef OPENSSL_NO_SSL_TRACE
3130	if (s_msg == 2)
3131	SSL_set_msg_callback(con, SSL_trace);
3132	else
3133	#endif
3134	SSL_set_msg_callback(con, msg_cb);
3135	SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
3136	}
3137
3138	for (;;) {
3139	i = BIO_gets(io, buf, bufsize + 1);
3140	if (i < 0) { /* error */
3141	if (!BIO_should_retry(io) && !SSL_waiting_for_async(con)) {
3142	if (!s_quiet)
3143	ERR_print_errors(bio_err);
3144	goto err;
3145	} else {
3146	BIO_printf(bio_s_out, "read R BLOCK\n");
3147	#ifndef OPENSSL_NO_SRP
3148	if (BIO_should_io_special(io)
3149	&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3150	BIO_printf(bio_s_out, "LOOKUP renego during read\n");
3151
3152	lookup_srp_user(&srp_callback_parm, bio_s_out);
3153
3154	continue;
3155	}
3156	#endif
3157	ossl_sleep(1000);
3158	continue;
3159	}
3160	} else if (i == 0) { /* end of input */
3161	ret = 1;
3162	goto end;
3163	}
3164
3165	/* else we have data */
3166	if (((www == 1) && (strncmp("GET ", buf, 4) == 0)) \|\|
3167	((www == 2) && (strncmp("GET /stats ", buf, 11) == 0))) {
3168	char *p;
3169	X509 *peer = NULL;
3170	STACK_OF(SSL_CIPHER) *sk;
3171	static const char *space = " ";
3172
3173	if (www == 1 && strncmp("GET /reneg", buf, 10) == 0) {
3174	if (strncmp("GET /renegcert", buf, 14) == 0)
3175	SSL_set_verify(con,
3176	SSL_VERIFY_PEER \| SSL_VERIFY_CLIENT_ONCE,
3177	NULL);
3178	i = SSL_renegotiate(con);
3179	BIO_printf(bio_s_out, "SSL_renegotiate -> %d\n", i);
3180	/* Send the HelloRequest */
3181	i = SSL_do_handshake(con);
3182	if (i <= 0) {
3183	BIO_printf(bio_s_out, "SSL_do_handshake() Retval %d\n",
3184	SSL_get_error(con, i));
3185	ERR_print_errors(bio_err);
3186	goto err;
3187	}
3188	/* Wait for a ClientHello to come back */
3189	FD_ZERO(&readfds);
3190	openssl_fdset(s, &readfds);
3191	i = select(width, (void *)&readfds, NULL, NULL, NULL);
3192	if (i <= 0 \|\| !FD_ISSET(s, &readfds)) {
3193	BIO_printf(bio_s_out,
3194	"Error waiting for client response\n");
3195	ERR_print_errors(bio_err);
3196	goto err;
3197	}
3198	/*
3199	* We're not actually expecting any data here and we ignore
3200	* any that is sent. This is just to force the handshake that
3201	* we're expecting to come from the client. If they haven't
3202	* sent one there's not much we can do.
3203	*/
3204	BIO_gets(io, buf, bufsize + 1);
3205	}
3206
3207	BIO_puts(io,
3208	"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
3209	BIO_puts(io, "<HTML><BODY BGCOLOR=\"#ffffff\">\n");
3210	BIO_puts(io, "<pre>\n");
3211	/* BIO_puts(io, OpenSSL_version(OPENSSL_VERSION)); */
3212	BIO_puts(io, "\n");
3213	for (i = 0; i < local_argc; i++) {
3214	const char *myp;
3215	for (myp = local_argv[i]; *myp; myp++)
3216	switch (*myp) {
3217	case '<':
3218	BIO_puts(io, "<");
3219	break;
3220	case '>':
3221	BIO_puts(io, ">");
3222	break;
3223	case '&':
3224	BIO_puts(io, "&");
3225	break;
3226	default:
3227	BIO_write(io, myp, 1);
3228	break;
3229	}
3230	BIO_write(io, " ", 1);
3231	}
3232	BIO_puts(io, "\n");
3233
3234	BIO_printf(io,
3235	"Secure Renegotiation IS%s supported\n",
3236	SSL_get_secure_renegotiation_support(con) ?
3237	"" : " NOT");
3238
3239	/*
3240	* The following is evil and should not really be done
3241	*/
3242	BIO_printf(io, "Ciphers supported in s_server binary\n");
3243	sk = SSL_get_ciphers(con);
3244	j = sk_SSL_CIPHER_num(sk);
3245	for (i = 0; i < j; i++) {
3246	c = sk_SSL_CIPHER_value(sk, i);
3247	BIO_printf(io, "%-11s:%-25s ",
3248	SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
3249	if ((((i + 1) % 2) == 0) && (i + 1 != j))
3250	BIO_puts(io, "\n");
3251	}
3252	BIO_puts(io, "\n");
3253	p = SSL_get_shared_ciphers(con, buf, bufsize);
3254	if (p != NULL) {
3255	BIO_printf(io,
3256	"---\nCiphers common between both SSL end points:\n");
3257	j = i = 0;
3258	while (*p) {
3259	if (*p == ':') {
3260	BIO_write(io, space, 26 - j);
3261	i++;
3262	j = 0;
3263	BIO_write(io, ((i % 3) ? " " : "\n"), 1);
3264	} else {
3265	BIO_write(io, p, 1);
3266	j++;
3267	}
3268	p++;
3269	}
3270	BIO_puts(io, "\n");
3271	}
3272	ssl_print_sigalgs(io, con);
3273	#ifndef OPENSSL_NO_EC
3274	ssl_print_groups(io, con, 0);
3275	#endif
3276	print_ca_names(io, con);
3277	BIO_printf(io, (SSL_session_reused(con)
3278	? "---\nReused, " : "---\nNew, "));
3279	c = SSL_get_current_cipher(con);
3280	BIO_printf(io, "%s, Cipher is %s\n",
3281	SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
3282	SSL_SESSION_print(io, SSL_get_session(con));
3283	BIO_printf(io, "---\n");
3284	print_stats(io, SSL_get_SSL_CTX(con));
3285	BIO_printf(io, "---\n");
3286	peer = SSL_get0_peer_certificate(con);
3287	if (peer != NULL) {
3288	BIO_printf(io, "Client certificate\n");
3289	X509_print(io, peer);
3290	PEM_write_bio_X509(io, peer);
3291	peer = NULL;
3292	} else {
3293	BIO_puts(io, "no client certificate available\n");
3294	}
3295	BIO_puts(io, "</pre></BODY></HTML>\r\n\r\n");
3296	break;
3297	} else if ((www == 2 \|\| www == 3)
3298	&& (strncmp("GET /", buf, 5) == 0)) {
3299	BIO *file;
3300	char p, e;
3301	static const char *text =
3302	"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
3303
3304	/* skip the '/' */
3305	p = &(buf[5]);
3306
3307	dot = 1;
3308	for (e = p; *e != '\0'; e++) {
3309	if (e[0] == ' ')
3310	break;
3311
3312	if (e[0] == ':') {
3313	/* Windows drive. We treat this the same way as ".." */
3314	dot = -1;
3315	break;
3316	}
3317
3318	switch (dot) {
3319	case 1:
3320	dot = (e[0] == '.') ? 2 : 0;
3321	break;
3322	case 2:
3323	dot = (e[0] == '.') ? 3 : 0;
3324	break;
3325	case 3:
3326	dot = (e[0] == '/' \|\| e[0] == '\\') ? -1 : 0;
3327	break;
3328	}
3329	if (dot == 0)
3330	dot = (e[0] == '/' \|\| e[0] == '\\') ? 1 : 0;
3331	}
3332	dot = (dot == 3) \|\| (dot == -1); /* filename contains ".."
3333	* component */
3334
3335	if (*e == '\0') {
3336	BIO_puts(io, text);
3337	BIO_printf(io, "'%s' is an invalid file name\r\n", p);
3338	break;
3339	}
3340	*e = '\0';
3341
3342	if (dot) {
3343	BIO_puts(io, text);
3344	BIO_printf(io, "'%s' contains '..' or ':'\r\n", p);
3345	break;
3346	}
3347
3348	if (p == '/' \|\| p == '\\') {
3349	BIO_puts(io, text);
3350	BIO_printf(io, "'%s' is an invalid path\r\n", p);
3351	break;
3352	}
3353
3354	/* if a directory, do the index thang */
3355	if (app_isdir(p) > 0) {
3356	BIO_puts(io, text);
3357	BIO_printf(io, "'%s' is a directory\r\n", p);
3358	break;
3359	}
3360
3361	opmode = (http_server_binmode == 1) ? "rb" : "r";
3362	if ((file = BIO_new_file(p, opmode)) == NULL) {
3363	BIO_puts(io, text);
3364	BIO_printf(io, "Error opening '%s' mode='%s'\r\n", p, opmode);
3365	ERR_print_errors(io);
3366	break;
3367	}
3368
3369	if (!s_quiet)
3370	BIO_printf(bio_err, "FILE:%s\n", p);
3371
3372	if (www == 2) {
3373	i = strlen(p);
3374	if (((i > 5) && (strcmp(&(p[i - 5]), ".html") == 0)) \|\|
3375	((i > 4) && (strcmp(&(p[i - 4]), ".php") == 0)) \|\|
3376	((i > 4) && (strcmp(&(p[i - 4]), ".htm") == 0)))
3377	BIO_puts(io,
3378	"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
3379	else
3380	BIO_puts(io,
3381	"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
3382	}
3383	/* send the file */
3384	#ifndef OPENSSL_NO_KTLS
3385	if (use_sendfile_for_req && !BIO_get_ktls_send(SSL_get_wbio(con))) {
3386	BIO_printf(bio_err, "Warning: sendfile requested but KTLS is not available\n");
3387	use_sendfile_for_req = 0;
3388	}
3389	if (use_sendfile_for_req) {
3390	FILE *fp = NULL;
3391	int fd;
3392	struct stat st;
3393	off_t offset = 0;
3394	size_t filesize;
3395
3396	BIO_get_fp(file, &fp);
3397	fd = fileno(fp);
3398	if (fstat(fd, &st) < 0) {
3399	BIO_printf(io, "Error fstat '%s'\r\n", p);
3400	ERR_print_errors(io);
3401	goto write_error;
3402	}
3403
3404	filesize = st.st_size;
3405	if (((int)BIO_flush(io)) < 0)
3406	goto write_error;
3407
3408	for (;;) {
3409	i = SSL_sendfile(con, fd, offset, filesize, 0);
3410	if (i < 0) {
3411	BIO_printf(io, "Error SSL_sendfile '%s'\r\n", p);
3412	ERR_print_errors(io);
3413	break;
3414	} else {
3415	offset += i;
3416	filesize -= i;
3417	}
3418
3419	if (filesize <= 0) {
3420	if (!s_quiet)
3421	BIO_printf(bio_err, "KTLS SENDFILE '%s' OK\n", p);
3422
3423	break;
3424	}
3425	}
3426	} else
3427	#endif
3428	{
3429	for (;;) {
3430	i = BIO_read(file, buf, bufsize);
3431	if (i <= 0)
3432	break;
3433
3434	#ifdef RENEG
3435	total_bytes += i;
3436	BIO_printf(bio_err, "%d\n", i);
3437	if (total_bytes > 3 * 1024) {
3438	total_bytes = 0;
3439	BIO_printf(bio_err, "RENEGOTIATE\n");
3440	SSL_renegotiate(con);
3441	}
3442	#endif
3443
3444	for (j = 0; j < i;) {
3445	#ifdef RENEG
3446	static count = 0;
3447	if (++count == 13)
3448	SSL_renegotiate(con);
3449	#endif
3450	k = BIO_write(io, &(buf[j]), i - j);
3451	if (k <= 0) {
3452	if (!BIO_should_retry(io)
3453	&& !SSL_waiting_for_async(con)) {
3454	goto write_error;
3455	} else {
3456	BIO_printf(bio_s_out, "rwrite W BLOCK\n");
3457	}
3458	} else {
3459	j += k;
3460	}
3461	}
3462	}
3463	}
3464	write_error:
3465	BIO_free(file);
3466	break;
3467	}
3468	}
3469
3470	for (;;) {
3471	i = (int)BIO_flush(io);
3472	if (i <= 0) {
3473	if (!BIO_should_retry(io))
3474	break;
3475	} else
3476	break;
3477	}
3478	end:
3479	/* make sure we re-use sessions */
3480	do_ssl_shutdown(con);
3481
3482	err:
3483	OPENSSL_free(buf);
3484	BIO_free(ssl_bio);
3485	BIO_free_all(io);
3486	return ret;
3487	}
3488
3489	static int rev_body(int s, int stype, int prot, unsigned char *context)
3490	{
3491	char *buf = NULL;
3492	int i;
3493	int ret = 1;
3494	SSL *con;
3495	BIO io, ssl_bio, *sbio;
3496	#ifdef CHARSET_EBCDIC
3497	BIO *filter;
3498	#endif
3499
3500	/* as we use BIO_gets(), and it always null terminates data, we need
3501	* to allocate 1 byte longer buffer to fit the full 2^14 byte record */
3502	buf = app_malloc(bufsize + 1, "server rev buffer");
3503	io = BIO_new(BIO_f_buffer());
3504	ssl_bio = BIO_new(BIO_f_ssl());
3505	if ((io == NULL) \|\| (ssl_bio == NULL))
3506	goto err;
3507
3508	/* lets make the output buffer a reasonable size */
3509	if (BIO_set_write_buffer_size(io, bufsize) <= 0)
3510	goto err;
3511
3512	if ((con = SSL_new(ctx)) == NULL)
3513	goto err;
3514
3515	if (s_tlsextdebug) {
3516	SSL_set_tlsext_debug_callback(con, tlsext_cb);
3517	SSL_set_tlsext_debug_arg(con, bio_s_out);
3518	}
3519	if (context != NULL
3520	&& !SSL_set_session_id_context(con, context,
3521	strlen((char *)context))) {
3522	SSL_free(con);
3523	ERR_print_errors(bio_err);
3524	goto err;
3525	}
3526
3527	sbio = BIO_new_socket(s, BIO_NOCLOSE);
3528	if (sbio == NULL) {
3529	SSL_free(con);
3530	ERR_print_errors(bio_err);
3531	goto err;
3532	}
3533
3534	SSL_set_bio(con, sbio, sbio);
3535	SSL_set_accept_state(con);
3536
3537	/* No need to free \|con\| after this. Done by BIO_free(ssl_bio) */
3538	BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
3539	BIO_push(io, ssl_bio);
3540	ssl_bio = NULL;
3541	#ifdef CHARSET_EBCDIC
3542	filter = BIO_new(BIO_f_ebcdic_filter());
3543	if (filter == NULL)
3544	goto err;
3545
3546	io = BIO_push(filter, io);
3547	#endif
3548
3549	if (s_debug) {
3550	BIO_set_callback_ex(SSL_get_rbio(con), bio_dump_callback);
3551	BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
3552	}
3553	if (s_msg) {
3554	#ifndef OPENSSL_NO_SSL_TRACE
3555	if (s_msg == 2)
3556	SSL_set_msg_callback(con, SSL_trace);
3557	else
3558	#endif
3559	SSL_set_msg_callback(con, msg_cb);
3560	SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
3561	}
3562
3563	for (;;) {
3564	i = BIO_do_handshake(io);
3565	if (i > 0)
3566	break;
3567	if (!BIO_should_retry(io)) {
3568	BIO_puts(bio_err, "CONNECTION FAILURE\n");
3569	ERR_print_errors(bio_err);
3570	goto end;
3571	}
3572	#ifndef OPENSSL_NO_SRP
3573	if (BIO_should_io_special(io)
3574	&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3575	BIO_printf(bio_s_out, "LOOKUP renego during accept\n");
3576
3577	lookup_srp_user(&srp_callback_parm, bio_s_out);
3578
3579	continue;
3580	}
3581	#endif
3582	}
3583	BIO_printf(bio_err, "CONNECTION ESTABLISHED\n");
3584	print_ssl_summary(con);
3585
3586	for (;;) {
3587	i = BIO_gets(io, buf, bufsize + 1);
3588	if (i < 0) { /* error */
3589	if (!BIO_should_retry(io)) {
3590	if (!s_quiet)
3591	ERR_print_errors(bio_err);
3592	goto err;
3593	} else {
3594	BIO_printf(bio_s_out, "read R BLOCK\n");
3595	#ifndef OPENSSL_NO_SRP
3596	if (BIO_should_io_special(io)
3597	&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
3598	BIO_printf(bio_s_out, "LOOKUP renego during read\n");
3599
3600	lookup_srp_user(&srp_callback_parm, bio_s_out);
3601
3602	continue;
3603	}
3604	#endif
3605	ossl_sleep(1000);
3606	continue;
3607	}
3608	} else if (i == 0) { /* end of input */
3609	ret = 1;
3610	BIO_printf(bio_err, "CONNECTION CLOSED\n");
3611	goto end;
3612	} else {
3613	char *p = buf + i - 1;
3614	while (i && (p == '\n' \|\| p == '\r')) {
3615	p--;
3616	i--;
3617	}
3618	if (!s_ign_eof && (i == 5) && (strncmp(buf, "CLOSE", 5) == 0)) {
3619	ret = 1;
3620	BIO_printf(bio_err, "CONNECTION CLOSED\n");
3621	goto end;
3622	}
3623	BUF_reverse((unsigned char *)buf, NULL, i);
3624	buf[i] = '\n';
3625	BIO_write(io, buf, i + 1);
3626	for (;;) {
3627	i = BIO_flush(io);
3628	if (i > 0)
3629	break;
3630	if (!BIO_should_retry(io))
3631	goto end;
3632	}
3633	}
3634	}
3635	end:
3636	/* make sure we re-use sessions */
3637	do_ssl_shutdown(con);
3638
3639	err:
3640
3641	OPENSSL_free(buf);
3642	BIO_free(ssl_bio);
3643	BIO_free_all(io);
3644	return ret;
3645	}
3646
3647	#define MAX_SESSION_ID_ATTEMPTS 10
3648	static int generate_session_id(SSL ssl, unsigned char id,
3649	unsigned int *id_len)
3650	{
3651	unsigned int count = 0;
3652	unsigned int session_id_prefix_len = strlen(session_id_prefix);
3653
3654	do {
3655	if (RAND_bytes(id, *id_len) <= 0)
3656	return 0;
3657	/*
3658	* Prefix the session_id with the required prefix. NB: If our prefix
3659	* is too long, clip it - but there will be worse effects anyway, eg.
3660	* the server could only possibly create 1 session ID (ie. the
3661	* prefix!) so all future session negotiations will fail due to
3662	* conflicts.
3663	*/
3664	memcpy(id, session_id_prefix,
3665	(session_id_prefix_len < *id_len) ?
3666	session_id_prefix_len : *id_len);
3667	}
3668	while (SSL_has_matching_session_id(ssl, id, *id_len) &&
3669	(++count < MAX_SESSION_ID_ATTEMPTS));
3670	if (count >= MAX_SESSION_ID_ATTEMPTS)
3671	return 0;
3672	return 1;
3673	}
3674
3675	/*
3676	* By default s_server uses an in-memory cache which caches SSL_SESSION
3677	* structures without any serialization. This hides some bugs which only
3678	* become apparent in deployed servers. By implementing a basic external
3679	* session cache some issues can be debugged using s_server.
3680	*/
3681
3682	typedef struct simple_ssl_session_st {
3683	unsigned char *id;
3684	unsigned int idlen;
3685	unsigned char *der;
3686	int derlen;
3687	struct simple_ssl_session_st *next;
3688	} simple_ssl_session;
3689
3690	static simple_ssl_session *first = NULL;
3691
3692	static int add_session(SSL ssl, SSL_SESSION session)
3693	{
3694	simple_ssl_session sess = app_malloc(sizeof(sess), "get session");
3695	unsigned char *p;
3696
3697	SSL_SESSION_get_id(session, &sess->idlen);
3698	sess->derlen = i2d_SSL_SESSION(session, NULL);
3699	if (sess->derlen < 0) {
3700	BIO_printf(bio_err, "Error encoding session\n");
3701	OPENSSL_free(sess);
3702	return 0;
3703	}
3704
3705	sess->id = OPENSSL_memdup(SSL_SESSION_get_id(session, NULL), sess->idlen);
3706	sess->der = app_malloc(sess->derlen, "get session buffer");
3707	if (!sess->id) {
3708	BIO_printf(bio_err, "Out of memory adding to external cache\n");
3709	OPENSSL_free(sess->id);
3710	OPENSSL_free(sess->der);
3711	OPENSSL_free(sess);
3712	return 0;
3713	}
3714	p = sess->der;
3715
3716	/* Assume it still works. */
3717	if (i2d_SSL_SESSION(session, &p) != sess->derlen) {
3718	BIO_printf(bio_err, "Unexpected session encoding length\n");
3719	OPENSSL_free(sess->id);
3720	OPENSSL_free(sess->der);
3721	OPENSSL_free(sess);
3722	return 0;
3723	}
3724
3725	sess->next = first;
3726	first = sess;
3727	BIO_printf(bio_err, "New session added to external cache\n");
3728	return 0;
3729	}
3730
3731	static SSL_SESSION get_session(SSL ssl, const unsigned char *id, int idlen,
3732	int *do_copy)
3733	{
3734	simple_ssl_session *sess;
3735	*do_copy = 0;
3736	for (sess = first; sess; sess = sess->next) {
3737	if (idlen == (int)sess->idlen && !memcmp(sess->id, id, idlen)) {
3738	const unsigned char *p = sess->der;
3739	BIO_printf(bio_err, "Lookup session: cache hit\n");
3740	return d2i_SSL_SESSION(NULL, &p, sess->derlen);
3741	}
3742	}
3743	BIO_printf(bio_err, "Lookup session: cache miss\n");
3744	return NULL;
3745	}
3746
3747	static void del_session(SSL_CTX sctx, SSL_SESSION session)
3748	{
3749	simple_ssl_session sess, prev = NULL;
3750	const unsigned char *id;
3751	unsigned int idlen;
3752	id = SSL_SESSION_get_id(session, &idlen);
3753	for (sess = first; sess; sess = sess->next) {
3754	if (idlen == sess->idlen && !memcmp(sess->id, id, idlen)) {
3755	if (prev)
3756	prev->next = sess->next;
3757	else
3758	first = sess->next;
3759	OPENSSL_free(sess->id);
3760	OPENSSL_free(sess->der);
3761	OPENSSL_free(sess);
3762	return;
3763	}
3764	prev = sess;
3765	}
3766	}
3767
3768	static void init_session_cache_ctx(SSL_CTX *sctx)
3769	{
3770	SSL_CTX_set_session_cache_mode(sctx,
3771	SSL_SESS_CACHE_NO_INTERNAL \|
3772	SSL_SESS_CACHE_SERVER);
3773	SSL_CTX_sess_set_new_cb(sctx, add_session);
3774	SSL_CTX_sess_set_get_cb(sctx, get_session);
3775	SSL_CTX_sess_set_remove_cb(sctx, del_session);
3776	}
3777
3778	static void free_sessions(void)
3779	{
3780	simple_ssl_session sess, tsess;
3781	for (sess = first; sess;) {
3782	OPENSSL_free(sess->id);
3783	OPENSSL_free(sess->der);
3784	tsess = sess;
3785	sess = sess->next;
3786	OPENSSL_free(tsess);
3787	}
3788	first = NULL;
3789	}
3790
3791	#endif /* OPENSSL_NO_SOCK */

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