ssltestlib.c@ 104605

最後變更在這個檔案從104605是 104078,由 vboxsync 提交於 11 月前
openssl-3.1.5: Applied and adjusted our OpenSSL changes to 3.1.4. bugref:10638
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1	/*
2	* Copyright 2016-2023 The OpenSSL Project Authors. All Rights Reserved.
3	*
4	* Licensed under the Apache License 2.0 (the "License"). You may not use
5	* this file except in compliance with the License. You can obtain a copy
6	* in the file LICENSE in the source distribution or at
7	* https://www.openssl.org/source/license.html
8	*/
9
10	#include <string.h>
11
12	#include "internal/nelem.h"
13	#include "ssltestlib.h"
14	#include "../testutil.h"
15	#include "internal/e_os.h" /* for ossl_sleep() etc. */
16
17	#ifdef OPENSSL_SYS_UNIX
18	# include <unistd.h>
19	# ifndef OPENSSL_NO_KTLS
20	# include <netinet/in.h>
21	# include <netinet/in.h>
22	# include <arpa/inet.h>
23	# include <sys/socket.h>
24	# include <unistd.h>
25	# include <fcntl.h>
26	# endif
27	#endif
28
29	static int tls_dump_new(BIO *bi);
30	static int tls_dump_free(BIO *a);
31	static int tls_dump_read(BIO b, char out, int outl);
32	static int tls_dump_write(BIO b, const char in, int inl);
33	static long tls_dump_ctrl(BIO b, int cmd, long num, void ptr);
34	static int tls_dump_gets(BIO bp, char buf, int size);
35	static int tls_dump_puts(BIO bp, const char str);
36
37	/* Choose a sufficiently large type likely to be unused for this custom BIO */
38	#define BIO_TYPE_TLS_DUMP_FILTER (0x80 \| BIO_TYPE_FILTER)
39	#define BIO_TYPE_MEMPACKET_TEST 0x81
40	#define BIO_TYPE_ALWAYS_RETRY 0x82
41
42	static BIO_METHOD *method_tls_dump = NULL;
43	static BIO_METHOD *meth_mem = NULL;
44	static BIO_METHOD *meth_always_retry = NULL;
45	static int retry_err = -1;
46
47	/* Note: Not thread safe! */
48	const BIO_METHOD *bio_f_tls_dump_filter(void)
49	{
50	if (method_tls_dump == NULL) {
51	method_tls_dump = BIO_meth_new(BIO_TYPE_TLS_DUMP_FILTER,
52	"TLS dump filter");
53	if ( method_tls_dump == NULL
54	\|\| !BIO_meth_set_write(method_tls_dump, tls_dump_write)
55	\|\| !BIO_meth_set_read(method_tls_dump, tls_dump_read)
56	\|\| !BIO_meth_set_puts(method_tls_dump, tls_dump_puts)
57	\|\| !BIO_meth_set_gets(method_tls_dump, tls_dump_gets)
58	\|\| !BIO_meth_set_ctrl(method_tls_dump, tls_dump_ctrl)
59	\|\| !BIO_meth_set_create(method_tls_dump, tls_dump_new)
60	\|\| !BIO_meth_set_destroy(method_tls_dump, tls_dump_free))
61	return NULL;
62	}
63	return method_tls_dump;
64	}
65
66	void bio_f_tls_dump_filter_free(void)
67	{
68	BIO_meth_free(method_tls_dump);
69	}
70
71	static int tls_dump_new(BIO *bio)
72	{
73	BIO_set_init(bio, 1);
74	return 1;
75	}
76
77	static int tls_dump_free(BIO *bio)
78	{
79	BIO_set_init(bio, 0);
80
81	return 1;
82	}
83
84	static void copy_flags(BIO *bio)
85	{
86	int flags;
87	BIO *next = BIO_next(bio);
88
89	flags = BIO_test_flags(next, BIO_FLAGS_SHOULD_RETRY \| BIO_FLAGS_RWS);
90	BIO_clear_flags(bio, BIO_FLAGS_SHOULD_RETRY \| BIO_FLAGS_RWS);
91	BIO_set_flags(bio, flags);
92	}
93
94	#define RECORD_CONTENT_TYPE 0
95	#define RECORD_VERSION_HI 1
96	#define RECORD_VERSION_LO 2
97	#define RECORD_EPOCH_HI 3
98	#define RECORD_EPOCH_LO 4
99	#define RECORD_SEQUENCE_START 5
100	#define RECORD_SEQUENCE_END 10
101	#define RECORD_LEN_HI 11
102	#define RECORD_LEN_LO 12
103
104	#define MSG_TYPE 0
105	#define MSG_LEN_HI 1
106	#define MSG_LEN_MID 2
107	#define MSG_LEN_LO 3
108	#define MSG_SEQ_HI 4
109	#define MSG_SEQ_LO 5
110	#define MSG_FRAG_OFF_HI 6
111	#define MSG_FRAG_OFF_MID 7
112	#define MSG_FRAG_OFF_LO 8
113	#define MSG_FRAG_LEN_HI 9
114	#define MSG_FRAG_LEN_MID 10
115	#define MSG_FRAG_LEN_LO 11
116
117
118	static void dump_data(const char *data, int len)
119	{
120	int rem, i, content, reclen, msglen, fragoff, fraglen, epoch;
121	unsigned char *rec;
122
123	printf("---- START OF PACKET ----\n");
124
125	rem = len;
126	rec = (unsigned char *)data;
127
128	while (rem > 0) {
129	if (rem != len)
130	printf("*\n");
131	printf("*---- START OF RECORD ----\n");
132	if (rem < DTLS1_RT_HEADER_LENGTH) {
133	printf("*---- RECORD TRUNCATED ----\n");
134	break;
135	}
136	content = rec[RECORD_CONTENT_TYPE];
137	printf("** Record Content-type: %d\n", content);
138	printf("** Record Version: %02x%02x\n",
139	rec[RECORD_VERSION_HI], rec[RECORD_VERSION_LO]);
140	epoch = (rec[RECORD_EPOCH_HI] << 8) \| rec[RECORD_EPOCH_LO];
141	printf("** Record Epoch: %d\n", epoch);
142	printf("** Record Sequence: ");
143	for (i = RECORD_SEQUENCE_START; i <= RECORD_SEQUENCE_END; i++)
144	printf("%02x", rec[i]);
145	reclen = (rec[RECORD_LEN_HI] << 8) \| rec[RECORD_LEN_LO];
146	printf("\n** Record Length: %d\n", reclen);
147
148	/* Now look at message */
149	rec += DTLS1_RT_HEADER_LENGTH;
150	rem -= DTLS1_RT_HEADER_LENGTH;
151	if (content == SSL3_RT_HANDSHAKE) {
152	printf("**---- START OF HANDSHAKE MESSAGE FRAGMENT ----\n");
153	if (epoch > 0) {
154	printf("**---- HANDSHAKE MESSAGE FRAGMENT ENCRYPTED ----\n");
155	} else if (rem < DTLS1_HM_HEADER_LENGTH
156	\|\| reclen < DTLS1_HM_HEADER_LENGTH) {
157	printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
158	} else {
159	printf("*** Message Type: %d\n", rec[MSG_TYPE]);
160	msglen = (rec[MSG_LEN_HI] << 16) \| (rec[MSG_LEN_MID] << 8)
161	\| rec[MSG_LEN_LO];
162	printf("*** Message Length: %d\n", msglen);
163	printf("*** Message sequence: %d\n",
164	(rec[MSG_SEQ_HI] << 8) \| rec[MSG_SEQ_LO]);
165	fragoff = (rec[MSG_FRAG_OFF_HI] << 16)
166	\| (rec[MSG_FRAG_OFF_MID] << 8)
167	\| rec[MSG_FRAG_OFF_LO];
168	printf("*** Message Fragment offset: %d\n", fragoff);
169	fraglen = (rec[MSG_FRAG_LEN_HI] << 16)
170	\| (rec[MSG_FRAG_LEN_MID] << 8)
171	\| rec[MSG_FRAG_LEN_LO];
172	printf("*** Message Fragment len: %d\n", fraglen);
173	if (fragoff + fraglen > msglen)
174	printf("***---- HANDSHAKE MESSAGE FRAGMENT INVALID ----\n");
175	else if (reclen < fraglen)
176	printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
177	else
178	printf("**---- END OF HANDSHAKE MESSAGE FRAGMENT ----\n");
179	}
180	}
181	if (rem < reclen) {
182	printf("*---- RECORD TRUNCATED ----\n");
183	rem = 0;
184	} else {
185	rec += reclen;
186	rem -= reclen;
187	printf("*---- END OF RECORD ----\n");
188	}
189	}
190	printf("---- END OF PACKET ----\n\n");
191	fflush(stdout);
192	}
193
194	static int tls_dump_read(BIO bio, char out, int outl)
195	{
196	int ret;
197	BIO *next = BIO_next(bio);
198
199	ret = BIO_read(next, out, outl);
200	copy_flags(bio);
201
202	if (ret > 0) {
203	dump_data(out, ret);
204	}
205
206	return ret;
207	}
208
209	static int tls_dump_write(BIO bio, const char in, int inl)
210	{
211	int ret;
212	BIO *next = BIO_next(bio);
213
214	ret = BIO_write(next, in, inl);
215	copy_flags(bio);
216
217	return ret;
218	}
219
220	static long tls_dump_ctrl(BIO bio, int cmd, long num, void ptr)
221	{
222	long ret;
223	BIO *next = BIO_next(bio);
224
225	if (next == NULL)
226	return 0;
227
228	switch (cmd) {
229	case BIO_CTRL_DUP:
230	ret = 0L;
231	break;
232	default:
233	ret = BIO_ctrl(next, cmd, num, ptr);
234	break;
235	}
236	return ret;
237	}
238
239	static int tls_dump_gets(BIO bio, char buf, int size)
240	{
241	/* We don't support this - not needed anyway */
242	return -1;
243	}
244
245	static int tls_dump_puts(BIO bio, const char str)
246	{
247	return tls_dump_write(bio, str, strlen(str));
248	}
249
250
251	struct mempacket_st {
252	unsigned char *data;
253	int len;
254	unsigned int num;
255	unsigned int type;
256	};
257
258	static void mempacket_free(MEMPACKET *pkt)
259	{
260	if (pkt->data != NULL)
261	OPENSSL_free(pkt->data);
262	OPENSSL_free(pkt);
263	}
264
265	typedef struct mempacket_test_ctx_st {
266	STACK_OF(MEMPACKET) *pkts;
267	unsigned int epoch;
268	unsigned int currrec;
269	unsigned int currpkt;
270	unsigned int lastpkt;
271	unsigned int injected;
272	unsigned int noinject;
273	unsigned int dropepoch;
274	int droprec;
275	int duprec;
276	} MEMPACKET_TEST_CTX;
277
278	static int mempacket_test_new(BIO *bi);
279	static int mempacket_test_free(BIO *a);
280	static int mempacket_test_read(BIO b, char out, int outl);
281	static int mempacket_test_write(BIO b, const char in, int inl);
282	static long mempacket_test_ctrl(BIO b, int cmd, long num, void ptr);
283	static int mempacket_test_gets(BIO bp, char buf, int size);
284	static int mempacket_test_puts(BIO bp, const char str);
285
286	const BIO_METHOD *bio_s_mempacket_test(void)
287	{
288	if (meth_mem == NULL) {
289	if (!TEST_ptr(meth_mem = BIO_meth_new(BIO_TYPE_MEMPACKET_TEST,
290	"Mem Packet Test"))
291	\|\| !TEST_true(BIO_meth_set_write(meth_mem, mempacket_test_write))
292	\|\| !TEST_true(BIO_meth_set_read(meth_mem, mempacket_test_read))
293	\|\| !TEST_true(BIO_meth_set_puts(meth_mem, mempacket_test_puts))
294	\|\| !TEST_true(BIO_meth_set_gets(meth_mem, mempacket_test_gets))
295	\|\| !TEST_true(BIO_meth_set_ctrl(meth_mem, mempacket_test_ctrl))
296	\|\| !TEST_true(BIO_meth_set_create(meth_mem, mempacket_test_new))
297	\|\| !TEST_true(BIO_meth_set_destroy(meth_mem, mempacket_test_free)))
298	return NULL;
299	}
300	return meth_mem;
301	}
302
303	void bio_s_mempacket_test_free(void)
304	{
305	BIO_meth_free(meth_mem);
306	}
307
308	static int mempacket_test_new(BIO *bio)
309	{
310	MEMPACKET_TEST_CTX *ctx;
311
312	if (!TEST_ptr(ctx = OPENSSL_zalloc(sizeof(*ctx))))
313	return 0;
314	if (!TEST_ptr(ctx->pkts = sk_MEMPACKET_new_null())) {
315	OPENSSL_free(ctx);
316	return 0;
317	}
318	ctx->dropepoch = 0;
319	ctx->droprec = -1;
320	BIO_set_init(bio, 1);
321	BIO_set_data(bio, ctx);
322	return 1;
323	}
324
325	static int mempacket_test_free(BIO *bio)
326	{
327	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
328
329	sk_MEMPACKET_pop_free(ctx->pkts, mempacket_free);
330	OPENSSL_free(ctx);
331	BIO_set_data(bio, NULL);
332	BIO_set_init(bio, 0);
333	return 1;
334	}
335
336	/* Record Header values */
337	#define EPOCH_HI 3
338	#define EPOCH_LO 4
339	#define RECORD_SEQUENCE 10
340	#define RECORD_LEN_HI 11
341	#define RECORD_LEN_LO 12
342
343	#define STANDARD_PACKET 0
344
345	static int mempacket_test_read(BIO bio, char out, int outl)
346	{
347	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
348	MEMPACKET *thispkt;
349	unsigned char *rec;
350	int rem;
351	unsigned int seq, offset, len, epoch;
352
353	BIO_clear_retry_flags(bio);
354	if ((thispkt = sk_MEMPACKET_value(ctx->pkts, 0)) == NULL
355	\|\| thispkt->num != ctx->currpkt) {
356	/* Probably run out of data */
357	BIO_set_retry_read(bio);
358	return -1;
359	}
360	(void)sk_MEMPACKET_shift(ctx->pkts);
361	ctx->currpkt++;
362
363	if (outl > thispkt->len)
364	outl = thispkt->len;
365
366	if (thispkt->type != INJECT_PACKET_IGNORE_REC_SEQ
367	&& (ctx->injected \|\| ctx->droprec >= 0)) {
368	/*
369	* Overwrite the record sequence number. We strictly number them in
370	* the order received. Since we are actually a reliable transport
371	* we know that there won't be any re-ordering. We overwrite to deal
372	* with any packets that have been injected
373	*/
374	for (rem = thispkt->len, rec = thispkt->data; rem > 0; rem -= len) {
375	if (rem < DTLS1_RT_HEADER_LENGTH)
376	return -1;
377	epoch = (rec[EPOCH_HI] << 8) \| rec[EPOCH_LO];
378	if (epoch != ctx->epoch) {
379	ctx->epoch = epoch;
380	ctx->currrec = 0;
381	}
382	seq = ctx->currrec;
383	offset = 0;
384	do {
385	rec[RECORD_SEQUENCE - offset] = seq & 0xFF;
386	seq >>= 8;
387	offset++;
388	} while (seq > 0);
389
390	len = ((rec[RECORD_LEN_HI] << 8) \| rec[RECORD_LEN_LO])
391	+ DTLS1_RT_HEADER_LENGTH;
392	if (rem < (int)len)
393	return -1;
394	if (ctx->droprec == (int)ctx->currrec && ctx->dropepoch == epoch) {
395	if (rem > (int)len)
396	memmove(rec, rec + len, rem - len);
397	outl -= len;
398	ctx->droprec = -1;
399	if (outl == 0)
400	BIO_set_retry_read(bio);
401	} else {
402	rec += len;
403	}
404
405	ctx->currrec++;
406	}
407	}
408
409	memcpy(out, thispkt->data, outl);
410	mempacket_free(thispkt);
411	return outl;
412	}
413
414	/*
415	* Look for records from different epochs in the last datagram and swap them
416	* around
417	*/
418	int mempacket_swap_epoch(BIO *bio)
419	{
420	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
421	MEMPACKET *thispkt;
422	int rem, len, prevlen = 0, pktnum;
423	unsigned char rec, prevrec = NULL, *tmp;
424	unsigned int epoch;
425	int numpkts = sk_MEMPACKET_num(ctx->pkts);
426
427	if (numpkts <= 0)
428	return 0;
429
430	/*
431	* If there are multiple packets we only look in the last one. This should
432	* always be the one where any epoch change occurs.
433	*/
434	thispkt = sk_MEMPACKET_value(ctx->pkts, numpkts - 1);
435	if (thispkt == NULL)
436	return 0;
437
438	for (rem = thispkt->len, rec = thispkt->data; rem > 0; rem -= len, rec += len) {
439	if (rem < DTLS1_RT_HEADER_LENGTH)
440	return 0;
441	epoch = (rec[EPOCH_HI] << 8) \| rec[EPOCH_LO];
442	len = ((rec[RECORD_LEN_HI] << 8) \| rec[RECORD_LEN_LO])
443	+ DTLS1_RT_HEADER_LENGTH;
444	if (rem < len)
445	return 0;
446
447	/* Assumes the epoch change does not happen on the first record */
448	if (epoch != ctx->epoch) {
449	if (prevrec == NULL)
450	return 0;
451
452	/*
453	* We found 2 records with different epochs. Take a copy of the
454	* earlier record
455	*/
456	tmp = OPENSSL_malloc(prevlen);
457	if (tmp == NULL)
458	return 0;
459
460	memcpy(tmp, prevrec, prevlen);
461	/*
462	* Move everything from this record onwards, including any trailing
463	* records, and overwrite the earlier record
464	*/
465	memmove(prevrec, rec, rem);
466	thispkt->len -= prevlen;
467	pktnum = thispkt->num;
468
469	/*
470	* Create a new packet for the earlier record that we took out and
471	* add it to the end of the packet list.
472	*/
473	thispkt = OPENSSL_malloc(sizeof(*thispkt));
474	if (thispkt == NULL) {
475	OPENSSL_free(tmp);
476	return 0;
477	}
478	thispkt->type = INJECT_PACKET;
479	thispkt->data = tmp;
480	thispkt->len = prevlen;
481	thispkt->num = pktnum + 1;
482	if (sk_MEMPACKET_insert(ctx->pkts, thispkt, numpkts) <= 0) {
483	OPENSSL_free(tmp);
484	OPENSSL_free(thispkt);
485	return 0;
486	}
487
488	return 1;
489	}
490	prevrec = rec;
491	prevlen = len;
492	}
493
494	return 0;
495	}
496
497	/* Move packet from position s to position d in the list (d < s) */
498	int mempacket_move_packet(BIO *bio, int d, int s)
499	{
500	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
501	MEMPACKET *thispkt;
502	int numpkts = sk_MEMPACKET_num(ctx->pkts);
503	int i;
504
505	if (d >= s)
506	return 0;
507
508	/* We need at least s + 1 packets to be able to swap them */
509	if (numpkts <= s)
510	return 0;
511
512	/* Get the packet at position s */
513	thispkt = sk_MEMPACKET_value(ctx->pkts, s);
514	if (thispkt == NULL)
515	return 0;
516
517	/* Remove and re-add it */
518	if (sk_MEMPACKET_delete(ctx->pkts, s) != thispkt)
519	return 0;
520
521	thispkt->num -= (s - d);
522	if (sk_MEMPACKET_insert(ctx->pkts, thispkt, d) <= 0)
523	return 0;
524
525	/* Increment the packet numbers for moved packets */
526	for (i = d + 1; i <= s; i++) {
527	thispkt = sk_MEMPACKET_value(ctx->pkts, i);
528	thispkt->num++;
529	}
530	return 1;
531	}
532
533	int mempacket_test_inject(BIO bio, const char in, int inl, int pktnum,
534	int type)
535	{
536	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
537	MEMPACKET thispkt = NULL, looppkt, nextpkt, allpkts[3];
538	int i, duprec;
539	const unsigned char inu = (const unsigned char )in;
540	size_t len = ((inu[RECORD_LEN_HI] << 8) \| inu[RECORD_LEN_LO])
541	+ DTLS1_RT_HEADER_LENGTH;
542
543	if (ctx == NULL)
544	return -1;
545
546	if ((size_t)inl < len)
547	return -1;
548
549	if ((size_t)inl == len)
550	duprec = 0;
551	else
552	duprec = ctx->duprec > 0;
553
554	/* We don't support arbitrary injection when duplicating records */
555	if (duprec && pktnum != -1)
556	return -1;
557
558	/* We only allow injection before we've started writing any data */
559	if (pktnum >= 0) {
560	if (ctx->noinject)
561	return -1;
562	ctx->injected = 1;
563	} else {
564	ctx->noinject = 1;
565	}
566
567	for (i = 0; i < (duprec ? 3 : 1); i++) {
568	if (!TEST_ptr(allpkts[i] = OPENSSL_malloc(sizeof(*thispkt))))
569	goto err;
570	thispkt = allpkts[i];
571
572	if (!TEST_ptr(thispkt->data = OPENSSL_malloc(inl)))
573	goto err;
574	/*
575	* If we are duplicating the packet, we duplicate it three times. The
576	* first two times we drop the first record if there are more than one.
577	* In this way we know that libssl will not be able to make progress
578	* until it receives the last packet, and hence will be forced to
579	* buffer these records.
580	*/
581	if (duprec && i != 2) {
582	memcpy(thispkt->data, in + len, inl - len);
583	thispkt->len = inl - len;
584	} else {
585	memcpy(thispkt->data, in, inl);
586	thispkt->len = inl;
587	}
588	thispkt->num = (pktnum >= 0) ? (unsigned int)pktnum : ctx->lastpkt + i;
589	thispkt->type = type;
590	}
591
592	for (i = 0; i < sk_MEMPACKET_num(ctx->pkts); i++) {
593	if (!TEST_ptr(looppkt = sk_MEMPACKET_value(ctx->pkts, i)))
594	goto err;
595	/* Check if we found the right place to insert this packet */
596	if (looppkt->num > thispkt->num) {
597	if (sk_MEMPACKET_insert(ctx->pkts, thispkt, i) == 0)
598	goto err;
599	/* If we're doing up front injection then we're done */
600	if (pktnum >= 0)
601	return inl;
602	/*
603	* We need to do some accounting on lastpkt. We increment it first,
604	* but it might now equal the value of injected packets, so we need
605	* to skip over those
606	*/
607	ctx->lastpkt++;
608	do {
609	i++;
610	nextpkt = sk_MEMPACKET_value(ctx->pkts, i);
611	if (nextpkt != NULL && nextpkt->num == ctx->lastpkt)
612	ctx->lastpkt++;
613	else
614	return inl;
615	} while(1);
616	} else if (looppkt->num == thispkt->num) {
617	if (!ctx->noinject) {
618	/* We injected two packets with the same packet number! */
619	goto err;
620	}
621	ctx->lastpkt++;
622	thispkt->num++;
623	}
624	}
625	/*
626	* We didn't find any packets with a packet number equal to or greater than
627	* this one, so we just add it onto the end
628	*/
629	for (i = 0; i < (duprec ? 3 : 1); i++) {
630	thispkt = allpkts[i];
631	if (!sk_MEMPACKET_push(ctx->pkts, thispkt))
632	goto err;
633
634	if (pktnum < 0)
635	ctx->lastpkt++;
636	}
637
638	return inl;
639
640	err:
641	for (i = 0; i < (ctx->duprec > 0 ? 3 : 1); i++)
642	mempacket_free(allpkts[i]);
643	return -1;
644	}
645
646	static int mempacket_test_write(BIO bio, const char in, int inl)
647	{
648	return mempacket_test_inject(bio, in, inl, -1, STANDARD_PACKET);
649	}
650
651	static long mempacket_test_ctrl(BIO bio, int cmd, long num, void ptr)
652	{
653	long ret = 1;
654	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
655	MEMPACKET *thispkt;
656
657	switch (cmd) {
658	case BIO_CTRL_EOF:
659	ret = (long)(sk_MEMPACKET_num(ctx->pkts) == 0);
660	break;
661	case BIO_CTRL_GET_CLOSE:
662	ret = BIO_get_shutdown(bio);
663	break;
664	case BIO_CTRL_SET_CLOSE:
665	BIO_set_shutdown(bio, (int)num);
666	break;
667	case BIO_CTRL_WPENDING:
668	ret = 0L;
669	break;
670	case BIO_CTRL_PENDING:
671	thispkt = sk_MEMPACKET_value(ctx->pkts, 0);
672	if (thispkt == NULL)
673	ret = 0;
674	else
675	ret = thispkt->len;
676	break;
677	case BIO_CTRL_FLUSH:
678	ret = 1;
679	break;
680	case MEMPACKET_CTRL_SET_DROP_EPOCH:
681	ctx->dropepoch = (unsigned int)num;
682	break;
683	case MEMPACKET_CTRL_SET_DROP_REC:
684	ctx->droprec = (int)num;
685	break;
686	case MEMPACKET_CTRL_GET_DROP_REC:
687	ret = ctx->droprec;
688	break;
689	case MEMPACKET_CTRL_SET_DUPLICATE_REC:
690	ctx->duprec = (int)num;
691	break;
692	case BIO_CTRL_RESET:
693	case BIO_CTRL_DUP:
694	case BIO_CTRL_PUSH:
695	case BIO_CTRL_POP:
696	default:
697	ret = 0;
698	break;
699	}
700	return ret;
701	}
702
703	static int mempacket_test_gets(BIO bio, char buf, int size)
704	{
705	/* We don't support this - not needed anyway */
706	return -1;
707	}
708
709	static int mempacket_test_puts(BIO bio, const char str)
710	{
711	return mempacket_test_write(bio, str, strlen(str));
712	}
713
714	static int always_retry_new(BIO *bi);
715	static int always_retry_free(BIO *a);
716	static int always_retry_read(BIO b, char out, int outl);
717	static int always_retry_write(BIO b, const char in, int inl);
718	static long always_retry_ctrl(BIO b, int cmd, long num, void ptr);
719	static int always_retry_gets(BIO bp, char buf, int size);
720	static int always_retry_puts(BIO bp, const char str);
721
722	const BIO_METHOD *bio_s_always_retry(void)
723	{
724	if (meth_always_retry == NULL) {
725	if (!TEST_ptr(meth_always_retry = BIO_meth_new(BIO_TYPE_ALWAYS_RETRY,
726	"Always Retry"))
727	\|\| !TEST_true(BIO_meth_set_write(meth_always_retry,
728	always_retry_write))
729	\|\| !TEST_true(BIO_meth_set_read(meth_always_retry,
730	always_retry_read))
731	\|\| !TEST_true(BIO_meth_set_puts(meth_always_retry,
732	always_retry_puts))
733	\|\| !TEST_true(BIO_meth_set_gets(meth_always_retry,
734	always_retry_gets))
735	\|\| !TEST_true(BIO_meth_set_ctrl(meth_always_retry,
736	always_retry_ctrl))
737	\|\| !TEST_true(BIO_meth_set_create(meth_always_retry,
738	always_retry_new))
739	\|\| !TEST_true(BIO_meth_set_destroy(meth_always_retry,
740	always_retry_free)))
741	return NULL;
742	}
743	return meth_always_retry;
744	}
745
746	void bio_s_always_retry_free(void)
747	{
748	BIO_meth_free(meth_always_retry);
749	}
750
751	static int always_retry_new(BIO *bio)
752	{
753	BIO_set_init(bio, 1);
754	return 1;
755	}
756
757	static int always_retry_free(BIO *bio)
758	{
759	BIO_set_data(bio, NULL);
760	BIO_set_init(bio, 0);
761	return 1;
762	}
763
764	void set_always_retry_err_val(int err)
765	{
766	retry_err = err;
767	}
768
769	static int always_retry_read(BIO bio, char out, int outl)
770	{
771	BIO_set_retry_read(bio);
772	return retry_err;
773	}
774
775	static int always_retry_write(BIO bio, const char in, int inl)
776	{
777	BIO_set_retry_write(bio);
778	return retry_err;
779	}
780
781	static long always_retry_ctrl(BIO bio, int cmd, long num, void ptr)
782	{
783	long ret = 1;
784
785	switch (cmd) {
786	case BIO_CTRL_FLUSH:
787	BIO_set_retry_write(bio);
788	/* fall through */
789	case BIO_CTRL_EOF:
790	case BIO_CTRL_RESET:
791	case BIO_CTRL_DUP:
792	case BIO_CTRL_PUSH:
793	case BIO_CTRL_POP:
794	default:
795	ret = 0;
796	break;
797	}
798	return ret;
799	}
800
801	static int always_retry_gets(BIO bio, char buf, int size)
802	{
803	BIO_set_retry_read(bio);
804	return retry_err;
805	}
806
807	static int always_retry_puts(BIO bio, const char str)
808	{
809	BIO_set_retry_write(bio);
810	return retry_err;
811	}
812
813	int create_ssl_ctx_pair(OSSL_LIB_CTX libctx, const SSL_METHOD sm,
814	const SSL_METHOD *cm, int min_proto_version,
815	int max_proto_version, SSL_CTX sctx, SSL_CTX cctx,
816	char certfile, char privkeyfile)
817	{
818	SSL_CTX *serverctx = NULL;
819	SSL_CTX *clientctx = NULL;
820
821	if (sctx != NULL) {
822	if (*sctx != NULL)
823	serverctx = *sctx;
824	else if (!TEST_ptr(serverctx = SSL_CTX_new_ex(libctx, NULL, sm))
825	\|\| !TEST_true(SSL_CTX_set_options(serverctx,
826	SSL_OP_ALLOW_CLIENT_RENEGOTIATION)))
827	goto err;
828	}
829
830	if (cctx != NULL) {
831	if (*cctx != NULL)
832	clientctx = *cctx;
833	else if (!TEST_ptr(clientctx = SSL_CTX_new_ex(libctx, NULL, cm)))
834	goto err;
835	}
836
837	#if !defined(OPENSSL_NO_TLS1_3) \
838	&& defined(OPENSSL_NO_EC) \
839	&& defined(OPENSSL_NO_DH)
840	/*
841	* There are no usable built-in TLSv1.3 groups if ec and dh are both
842	* disabled
843	*/
844	if (max_proto_version == 0
845	&& (sm == TLS_server_method() \|\| cm == TLS_client_method()))
846	max_proto_version = TLS1_2_VERSION;
847	#endif
848
849	if (serverctx != NULL
850	&& ((min_proto_version > 0
851	&& !TEST_true(SSL_CTX_set_min_proto_version(serverctx,
852	min_proto_version)))
853	\|\| (max_proto_version > 0
854	&& !TEST_true(SSL_CTX_set_max_proto_version(serverctx,
855	max_proto_version)))))
856	goto err;
857	if (clientctx != NULL
858	&& ((min_proto_version > 0
859	&& !TEST_true(SSL_CTX_set_min_proto_version(clientctx,
860	min_proto_version)))
861	\|\| (max_proto_version > 0
862	&& !TEST_true(SSL_CTX_set_max_proto_version(clientctx,
863	max_proto_version)))))
864	goto err;
865
866	if (serverctx != NULL && certfile != NULL && privkeyfile != NULL) {
867	if (!TEST_int_eq(SSL_CTX_use_certificate_file(serverctx, certfile,
868	SSL_FILETYPE_PEM), 1)
869	\|\| !TEST_int_eq(SSL_CTX_use_PrivateKey_file(serverctx,
870	privkeyfile,
871	SSL_FILETYPE_PEM), 1)
872	\|\| !TEST_int_eq(SSL_CTX_check_private_key(serverctx), 1))
873	goto err;
874	}
875
876	if (sctx != NULL)
877	*sctx = serverctx;
878	if (cctx != NULL)
879	*cctx = clientctx;
880	return 1;
881
882	err:
883	if (sctx != NULL && *sctx == NULL)
884	SSL_CTX_free(serverctx);
885	if (cctx != NULL && *cctx == NULL)
886	SSL_CTX_free(clientctx);
887	return 0;
888	}
889
890	#define MAXLOOPS 1000000
891
892	#if !defined(OPENSSL_NO_KTLS) && !defined(OPENSSL_NO_SOCK)
893	static int set_nb(int fd)
894	{
895	int flags;
896
897	flags = fcntl(fd,F_GETFL,0);
898	if (flags == -1)
899	return flags;
900	flags = fcntl(fd, F_SETFL, flags \| O_NONBLOCK);
901	return flags;
902	}
903
904	int create_test_sockets(int cfdp, int sfdp)
905	{
906	struct sockaddr_in sin;
907	const char *host = "127.0.0.1";
908	int cfd_connected = 0, ret = 0;
909	socklen_t slen = sizeof(sin);
910	int afd = -1, cfd = -1, sfd = -1;
911
912	memset ((char *) &sin, 0, sizeof(sin));
913	sin.sin_family = AF_INET;
914	sin.sin_addr.s_addr = inet_addr(host);
915
916	afd = socket(AF_INET, SOCK_STREAM, 0);
917	if (afd < 0)
918	return 0;
919
920	if (bind(afd, (struct sockaddr*)&sin, sizeof(sin)) < 0)
921	goto out;
922
923	if (getsockname(afd, (struct sockaddr*)&sin, &slen) < 0)
924	goto out;
925
926	if (listen(afd, 1) < 0)
927	goto out;
928
929	cfd = socket(AF_INET, SOCK_STREAM, 0);
930	if (cfd < 0)
931	goto out;
932
933	if (set_nb(afd) == -1)
934	goto out;
935
936	while (sfd == -1 \|\| !cfd_connected ) {
937	sfd = accept(afd, NULL, 0);
938	if (sfd == -1 && errno != EAGAIN)
939	goto out;
940
941	if (!cfd_connected && connect(cfd, (struct sockaddr*)&sin, sizeof(sin)) < 0)
942	goto out;
943	else
944	cfd_connected = 1;
945	}
946
947	if (set_nb(cfd) == -1 \|\| set_nb(sfd) == -1)
948	goto out;
949	ret = 1;
950	*cfdp = cfd;
951	*sfdp = sfd;
952	goto success;
953
954	out:
955	if (cfd != -1)
956	close(cfd);
957	if (sfd != -1)
958	close(sfd);
959	success:
960	if (afd != -1)
961	close(afd);
962	return ret;
963	}
964
965	int create_ssl_objects2(SSL_CTX serverctx, SSL_CTX clientctx, SSL **sssl,
966	SSL **cssl, int sfd, int cfd)
967	{
968	SSL serverssl = NULL, clientssl = NULL;
969	BIO s_to_c_bio = NULL, c_to_s_bio = NULL;
970
971	if (*sssl != NULL)
972	serverssl = *sssl;
973	else if (!TEST_ptr(serverssl = SSL_new(serverctx)))
974	goto error;
975	if (*cssl != NULL)
976	clientssl = *cssl;
977	else if (!TEST_ptr(clientssl = SSL_new(clientctx)))
978	goto error;
979
980	if (!TEST_ptr(s_to_c_bio = BIO_new_socket(sfd, BIO_NOCLOSE))
981	\|\| !TEST_ptr(c_to_s_bio = BIO_new_socket(cfd, BIO_NOCLOSE)))
982	goto error;
983
984	SSL_set_bio(clientssl, c_to_s_bio, c_to_s_bio);
985	SSL_set_bio(serverssl, s_to_c_bio, s_to_c_bio);
986	*sssl = serverssl;
987	*cssl = clientssl;
988	return 1;
989
990	error:
991	SSL_free(serverssl);
992	SSL_free(clientssl);
993	BIO_free(s_to_c_bio);
994	BIO_free(c_to_s_bio);
995	return 0;
996	}
997	#endif
998
999	/*
1000	* NOTE: Transfers control of the BIOs - this function will free them on error
1001	*/
1002	int create_ssl_objects(SSL_CTX serverctx, SSL_CTX clientctx, SSL **sssl,
1003	SSL *cssl, BIO s_to_c_fbio, BIO *c_to_s_fbio)
1004	{
1005	SSL serverssl = NULL, clientssl = NULL;
1006	BIO s_to_c_bio = NULL, c_to_s_bio = NULL;
1007
1008	if (*sssl != NULL)
1009	serverssl = *sssl;
1010	else if (!TEST_ptr(serverssl = SSL_new(serverctx)))
1011	goto error;
1012	if (*cssl != NULL)
1013	clientssl = *cssl;
1014	else if (!TEST_ptr(clientssl = SSL_new(clientctx)))
1015	goto error;
1016
1017	if (SSL_is_dtls(clientssl)) {
1018	if (!TEST_ptr(s_to_c_bio = BIO_new(bio_s_mempacket_test()))
1019	\|\| !TEST_ptr(c_to_s_bio = BIO_new(bio_s_mempacket_test())))
1020	goto error;
1021	} else {
1022	if (!TEST_ptr(s_to_c_bio = BIO_new(BIO_s_mem()))
1023	\|\| !TEST_ptr(c_to_s_bio = BIO_new(BIO_s_mem())))
1024	goto error;
1025	}
1026
1027	if (s_to_c_fbio != NULL
1028	&& !TEST_ptr(s_to_c_bio = BIO_push(s_to_c_fbio, s_to_c_bio)))
1029	goto error;
1030	if (c_to_s_fbio != NULL
1031	&& !TEST_ptr(c_to_s_bio = BIO_push(c_to_s_fbio, c_to_s_bio)))
1032	goto error;
1033
1034	/* Set Non-blocking IO behaviour */
1035	BIO_set_mem_eof_return(s_to_c_bio, -1);
1036	BIO_set_mem_eof_return(c_to_s_bio, -1);
1037
1038	/* Up ref these as we are passing them to two SSL objects */
1039	SSL_set_bio(serverssl, c_to_s_bio, s_to_c_bio);
1040	BIO_up_ref(s_to_c_bio);
1041	BIO_up_ref(c_to_s_bio);
1042	SSL_set_bio(clientssl, s_to_c_bio, c_to_s_bio);
1043	*sssl = serverssl;
1044	*cssl = clientssl;
1045	return 1;
1046
1047	error:
1048	SSL_free(serverssl);
1049	SSL_free(clientssl);
1050	BIO_free(s_to_c_bio);
1051	BIO_free(c_to_s_bio);
1052	BIO_free(s_to_c_fbio);
1053	BIO_free(c_to_s_fbio);
1054
1055	return 0;
1056	}
1057
1058	/*
1059	* Create an SSL connection, but does not read any post-handshake
1060	* NewSessionTicket messages.
1061	* If \|read\| is set and we're using DTLS then we will attempt to SSL_read on
1062	* the connection once we've completed one half of it, to ensure any retransmits
1063	* get triggered.
1064	* We stop the connection attempt (and return a failure value) if either peer
1065	* has SSL_get_error() return the value in the \|want\| parameter. The connection
1066	* attempt could be restarted by a subsequent call to this function.
1067	*/
1068	int create_bare_ssl_connection(SSL serverssl, SSL clientssl, int want,
1069	int read)
1070	{
1071	int retc = -1, rets = -1, err, abortctr = 0;
1072	int clienterr = 0, servererr = 0;
1073	int isdtls = SSL_is_dtls(serverssl);
1074
1075	do {
1076	err = SSL_ERROR_WANT_WRITE;
1077	while (!clienterr && retc <= 0 && err == SSL_ERROR_WANT_WRITE) {
1078	retc = SSL_connect(clientssl);
1079	if (retc <= 0)
1080	err = SSL_get_error(clientssl, retc);
1081	}
1082
1083	if (!clienterr && retc <= 0 && err != SSL_ERROR_WANT_READ) {
1084	TEST_info("SSL_connect() failed %d, %d", retc, err);
1085	if (want != SSL_ERROR_SSL)
1086	TEST_openssl_errors();
1087	clienterr = 1;
1088	}
1089	if (want != SSL_ERROR_NONE && err == want)
1090	return 0;
1091
1092	err = SSL_ERROR_WANT_WRITE;
1093	while (!servererr && rets <= 0 && err == SSL_ERROR_WANT_WRITE) {
1094	rets = SSL_accept(serverssl);
1095	if (rets <= 0)
1096	err = SSL_get_error(serverssl, rets);
1097	}
1098
1099	if (!servererr && rets <= 0
1100	&& err != SSL_ERROR_WANT_READ
1101	&& err != SSL_ERROR_WANT_X509_LOOKUP) {
1102	TEST_info("SSL_accept() failed %d, %d", rets, err);
1103	if (want != SSL_ERROR_SSL)
1104	TEST_openssl_errors();
1105	servererr = 1;
1106	}
1107	if (want != SSL_ERROR_NONE && err == want)
1108	return 0;
1109	if (clienterr && servererr)
1110	return 0;
1111	if (isdtls && read) {
1112	unsigned char buf[20];
1113
1114	/* Trigger any retransmits that may be appropriate */
1115	if (rets > 0 && retc <= 0) {
1116	if (SSL_read(serverssl, buf, sizeof(buf)) > 0) {
1117	/* We don't expect this to succeed! */
1118	TEST_info("Unexpected SSL_read() success!");
1119	return 0;
1120	}
1121	}
1122	if (retc > 0 && rets <= 0) {
1123	if (SSL_read(clientssl, buf, sizeof(buf)) > 0) {
1124	/* We don't expect this to succeed! */
1125	TEST_info("Unexpected SSL_read() success!");
1126	return 0;
1127	}
1128	}
1129	}
1130	if (++abortctr == MAXLOOPS) {
1131	TEST_info("No progress made");
1132	return 0;
1133	}
1134	if (isdtls && abortctr <= 50 && (abortctr % 10) == 0) {
1135	/*
1136	* It looks like we're just spinning. Pause for a short period to
1137	* give the DTLS timer a chance to do something. We only do this for
1138	* the first few times to prevent hangs.
1139	*/
1140	ossl_sleep(50);
1141	}
1142	} while (retc <=0 \|\| rets <= 0);
1143
1144	return 1;
1145	}
1146
1147	/*
1148	* Create an SSL connection including any post handshake NewSessionTicket
1149	* messages.
1150	*/
1151	int create_ssl_connection(SSL serverssl, SSL clientssl, int want)
1152	{
1153	int i;
1154	unsigned char buf;
1155	size_t readbytes;
1156
1157	if (!create_bare_ssl_connection(serverssl, clientssl, want, 1))
1158	return 0;
1159
1160	/*
1161	* We attempt to read some data on the client side which we expect to fail.
1162	* This will ensure we have received the NewSessionTicket in TLSv1.3 where
1163	* appropriate. We do this twice because there are 2 NewSessionTickets.
1164	*/
1165	for (i = 0; i < 2; i++) {
1166	if (SSL_read_ex(clientssl, &buf, sizeof(buf), &readbytes) > 0) {
1167	if (!TEST_ulong_eq(readbytes, 0))
1168	return 0;
1169	} else if (!TEST_int_eq(SSL_get_error(clientssl, 0),
1170	SSL_ERROR_WANT_READ)) {
1171	return 0;
1172	}
1173	}
1174
1175	return 1;
1176	}
1177
1178	void shutdown_ssl_connection(SSL serverssl, SSL clientssl)
1179	{
1180	SSL_shutdown(clientssl);
1181	SSL_shutdown(serverssl);
1182	SSL_free(serverssl);
1183	SSL_free(clientssl);
1184	}

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