ssltestlib.c@ 105945

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openssl-3.1.7: Applied and adjusted our OpenSSL changes to 3.1.7. bugref:10757
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1	/*
2	* Copyright 2016-2024 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	/*
11	* We need access to the deprecated low level ENGINE APIs for legacy purposes
12	* when the deprecated calls are not hidden
13	*/
14	#ifndef OPENSSL_NO_DEPRECATED_3_0
15	# define OPENSSL_SUPPRESS_DEPRECATED
16	#endif
17
18	#include <string.h>
19
20	#include <openssl/engine.h>
21	#include "internal/nelem.h"
22	#include "ssltestlib.h"
23	#include "../testutil.h"
24	#include "internal/e_os.h" /* for ossl_sleep() etc. */
25
26	#ifdef OPENSSL_SYS_UNIX
27	# include <unistd.h>
28	# ifndef OPENSSL_NO_KTLS
29	# include <netinet/in.h>
30	# include <netinet/in.h>
31	# include <arpa/inet.h>
32	# include <sys/socket.h>
33	# include <unistd.h>
34	# include <fcntl.h>
35	# endif
36	#endif
37
38	static int tls_dump_new(BIO *bi);
39	static int tls_dump_free(BIO *a);
40	static int tls_dump_read(BIO b, char out, int outl);
41	static int tls_dump_write(BIO b, const char in, int inl);
42	static long tls_dump_ctrl(BIO b, int cmd, long num, void ptr);
43	static int tls_dump_gets(BIO bp, char buf, int size);
44	static int tls_dump_puts(BIO bp, const char str);
45
46	/* Choose a sufficiently large type likely to be unused for this custom BIO */
47	#define BIO_TYPE_TLS_DUMP_FILTER (0x80 \| BIO_TYPE_FILTER)
48	#define BIO_TYPE_MEMPACKET_TEST 0x81
49	#define BIO_TYPE_ALWAYS_RETRY 0x82
50
51	static BIO_METHOD *method_tls_dump = NULL;
52	static BIO_METHOD *meth_mem = NULL;
53	static BIO_METHOD *meth_always_retry = NULL;
54	static int retry_err = -1;
55
56	/* Note: Not thread safe! */
57	const BIO_METHOD *bio_f_tls_dump_filter(void)
58	{
59	if (method_tls_dump == NULL) {
60	method_tls_dump = BIO_meth_new(BIO_TYPE_TLS_DUMP_FILTER,
61	"TLS dump filter");
62	if ( method_tls_dump == NULL
63	\|\| !BIO_meth_set_write(method_tls_dump, tls_dump_write)
64	\|\| !BIO_meth_set_read(method_tls_dump, tls_dump_read)
65	\|\| !BIO_meth_set_puts(method_tls_dump, tls_dump_puts)
66	\|\| !BIO_meth_set_gets(method_tls_dump, tls_dump_gets)
67	\|\| !BIO_meth_set_ctrl(method_tls_dump, tls_dump_ctrl)
68	\|\| !BIO_meth_set_create(method_tls_dump, tls_dump_new)
69	\|\| !BIO_meth_set_destroy(method_tls_dump, tls_dump_free))
70	return NULL;
71	}
72	return method_tls_dump;
73	}
74
75	void bio_f_tls_dump_filter_free(void)
76	{
77	BIO_meth_free(method_tls_dump);
78	}
79
80	static int tls_dump_new(BIO *bio)
81	{
82	BIO_set_init(bio, 1);
83	return 1;
84	}
85
86	static int tls_dump_free(BIO *bio)
87	{
88	BIO_set_init(bio, 0);
89
90	return 1;
91	}
92
93	static void copy_flags(BIO *bio)
94	{
95	int flags;
96	BIO *next = BIO_next(bio);
97
98	flags = BIO_test_flags(next, BIO_FLAGS_SHOULD_RETRY \| BIO_FLAGS_RWS);
99	BIO_clear_flags(bio, BIO_FLAGS_SHOULD_RETRY \| BIO_FLAGS_RWS);
100	BIO_set_flags(bio, flags);
101	}
102
103	#define RECORD_CONTENT_TYPE 0
104	#define RECORD_VERSION_HI 1
105	#define RECORD_VERSION_LO 2
106	#define RECORD_EPOCH_HI 3
107	#define RECORD_EPOCH_LO 4
108	#define RECORD_SEQUENCE_START 5
109	#define RECORD_SEQUENCE_END 10
110	#define RECORD_LEN_HI 11
111	#define RECORD_LEN_LO 12
112
113	#define MSG_TYPE 0
114	#define MSG_LEN_HI 1
115	#define MSG_LEN_MID 2
116	#define MSG_LEN_LO 3
117	#define MSG_SEQ_HI 4
118	#define MSG_SEQ_LO 5
119	#define MSG_FRAG_OFF_HI 6
120	#define MSG_FRAG_OFF_MID 7
121	#define MSG_FRAG_OFF_LO 8
122	#define MSG_FRAG_LEN_HI 9
123	#define MSG_FRAG_LEN_MID 10
124	#define MSG_FRAG_LEN_LO 11
125
126
127	static void dump_data(const char *data, int len)
128	{
129	int rem, i, content, reclen, msglen, fragoff, fraglen, epoch;
130	unsigned char *rec;
131
132	printf("---- START OF PACKET ----\n");
133
134	rem = len;
135	rec = (unsigned char *)data;
136
137	while (rem > 0) {
138	if (rem != len)
139	printf("*\n");
140	printf("*---- START OF RECORD ----\n");
141	if (rem < DTLS1_RT_HEADER_LENGTH) {
142	printf("*---- RECORD TRUNCATED ----\n");
143	break;
144	}
145	content = rec[RECORD_CONTENT_TYPE];
146	printf("** Record Content-type: %d\n", content);
147	printf("** Record Version: %02x%02x\n",
148	rec[RECORD_VERSION_HI], rec[RECORD_VERSION_LO]);
149	epoch = (rec[RECORD_EPOCH_HI] << 8) \| rec[RECORD_EPOCH_LO];
150	printf("** Record Epoch: %d\n", epoch);
151	printf("** Record Sequence: ");
152	for (i = RECORD_SEQUENCE_START; i <= RECORD_SEQUENCE_END; i++)
153	printf("%02x", rec[i]);
154	reclen = (rec[RECORD_LEN_HI] << 8) \| rec[RECORD_LEN_LO];
155	printf("\n** Record Length: %d\n", reclen);
156
157	/* Now look at message */
158	rec += DTLS1_RT_HEADER_LENGTH;
159	rem -= DTLS1_RT_HEADER_LENGTH;
160	if (content == SSL3_RT_HANDSHAKE) {
161	printf("**---- START OF HANDSHAKE MESSAGE FRAGMENT ----\n");
162	if (epoch > 0) {
163	printf("**---- HANDSHAKE MESSAGE FRAGMENT ENCRYPTED ----\n");
164	} else if (rem < DTLS1_HM_HEADER_LENGTH
165	\|\| reclen < DTLS1_HM_HEADER_LENGTH) {
166	printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
167	} else {
168	printf("*** Message Type: %d\n", rec[MSG_TYPE]);
169	msglen = (rec[MSG_LEN_HI] << 16) \| (rec[MSG_LEN_MID] << 8)
170	\| rec[MSG_LEN_LO];
171	printf("*** Message Length: %d\n", msglen);
172	printf("*** Message sequence: %d\n",
173	(rec[MSG_SEQ_HI] << 8) \| rec[MSG_SEQ_LO]);
174	fragoff = (rec[MSG_FRAG_OFF_HI] << 16)
175	\| (rec[MSG_FRAG_OFF_MID] << 8)
176	\| rec[MSG_FRAG_OFF_LO];
177	printf("*** Message Fragment offset: %d\n", fragoff);
178	fraglen = (rec[MSG_FRAG_LEN_HI] << 16)
179	\| (rec[MSG_FRAG_LEN_MID] << 8)
180	\| rec[MSG_FRAG_LEN_LO];
181	printf("*** Message Fragment len: %d\n", fraglen);
182	if (fragoff + fraglen > msglen)
183	printf("***---- HANDSHAKE MESSAGE FRAGMENT INVALID ----\n");
184	else if (reclen < fraglen)
185	printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
186	else
187	printf("**---- END OF HANDSHAKE MESSAGE FRAGMENT ----\n");
188	}
189	}
190	if (rem < reclen) {
191	printf("*---- RECORD TRUNCATED ----\n");
192	rem = 0;
193	} else {
194	rec += reclen;
195	rem -= reclen;
196	printf("*---- END OF RECORD ----\n");
197	}
198	}
199	printf("---- END OF PACKET ----\n\n");
200	fflush(stdout);
201	}
202
203	static int tls_dump_read(BIO bio, char out, int outl)
204	{
205	int ret;
206	BIO *next = BIO_next(bio);
207
208	ret = BIO_read(next, out, outl);
209	copy_flags(bio);
210
211	if (ret > 0) {
212	dump_data(out, ret);
213	}
214
215	return ret;
216	}
217
218	static int tls_dump_write(BIO bio, const char in, int inl)
219	{
220	int ret;
221	BIO *next = BIO_next(bio);
222
223	ret = BIO_write(next, in, inl);
224	copy_flags(bio);
225
226	return ret;
227	}
228
229	static long tls_dump_ctrl(BIO bio, int cmd, long num, void ptr)
230	{
231	long ret;
232	BIO *next = BIO_next(bio);
233
234	if (next == NULL)
235	return 0;
236
237	switch (cmd) {
238	case BIO_CTRL_DUP:
239	ret = 0L;
240	break;
241	default:
242	ret = BIO_ctrl(next, cmd, num, ptr);
243	break;
244	}
245	return ret;
246	}
247
248	static int tls_dump_gets(BIO bio, char buf, int size)
249	{
250	/* We don't support this - not needed anyway */
251	return -1;
252	}
253
254	static int tls_dump_puts(BIO bio, const char str)
255	{
256	return tls_dump_write(bio, str, strlen(str));
257	}
258
259
260	struct mempacket_st {
261	unsigned char *data;
262	int len;
263	unsigned int num;
264	unsigned int type;
265	};
266
267	static void mempacket_free(MEMPACKET *pkt)
268	{
269	if (pkt->data != NULL)
270	OPENSSL_free(pkt->data);
271	OPENSSL_free(pkt);
272	}
273
274	typedef struct mempacket_test_ctx_st {
275	STACK_OF(MEMPACKET) *pkts;
276	unsigned int epoch;
277	unsigned int currrec;
278	unsigned int currpkt;
279	unsigned int lastpkt;
280	unsigned int injected;
281	unsigned int noinject;
282	unsigned int dropepoch;
283	int droprec;
284	int duprec;
285	} MEMPACKET_TEST_CTX;
286
287	static int mempacket_test_new(BIO *bi);
288	static int mempacket_test_free(BIO *a);
289	static int mempacket_test_read(BIO b, char out, int outl);
290	static int mempacket_test_write(BIO b, const char in, int inl);
291	static long mempacket_test_ctrl(BIO b, int cmd, long num, void ptr);
292	static int mempacket_test_gets(BIO bp, char buf, int size);
293	static int mempacket_test_puts(BIO bp, const char str);
294
295	const BIO_METHOD *bio_s_mempacket_test(void)
296	{
297	if (meth_mem == NULL) {
298	if (!TEST_ptr(meth_mem = BIO_meth_new(BIO_TYPE_MEMPACKET_TEST,
299	"Mem Packet Test"))
300	\|\| !TEST_true(BIO_meth_set_write(meth_mem, mempacket_test_write))
301	\|\| !TEST_true(BIO_meth_set_read(meth_mem, mempacket_test_read))
302	\|\| !TEST_true(BIO_meth_set_puts(meth_mem, mempacket_test_puts))
303	\|\| !TEST_true(BIO_meth_set_gets(meth_mem, mempacket_test_gets))
304	\|\| !TEST_true(BIO_meth_set_ctrl(meth_mem, mempacket_test_ctrl))
305	\|\| !TEST_true(BIO_meth_set_create(meth_mem, mempacket_test_new))
306	\|\| !TEST_true(BIO_meth_set_destroy(meth_mem, mempacket_test_free)))
307	return NULL;
308	}
309	return meth_mem;
310	}
311
312	void bio_s_mempacket_test_free(void)
313	{
314	BIO_meth_free(meth_mem);
315	}
316
317	static int mempacket_test_new(BIO *bio)
318	{
319	MEMPACKET_TEST_CTX *ctx;
320
321	if (!TEST_ptr(ctx = OPENSSL_zalloc(sizeof(*ctx))))
322	return 0;
323	if (!TEST_ptr(ctx->pkts = sk_MEMPACKET_new_null())) {
324	OPENSSL_free(ctx);
325	return 0;
326	}
327	ctx->dropepoch = 0;
328	ctx->droprec = -1;
329	BIO_set_init(bio, 1);
330	BIO_set_data(bio, ctx);
331	return 1;
332	}
333
334	static int mempacket_test_free(BIO *bio)
335	{
336	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
337
338	sk_MEMPACKET_pop_free(ctx->pkts, mempacket_free);
339	OPENSSL_free(ctx);
340	BIO_set_data(bio, NULL);
341	BIO_set_init(bio, 0);
342	return 1;
343	}
344
345	/* Record Header values */
346	#define EPOCH_HI 3
347	#define EPOCH_LO 4
348	#define RECORD_SEQUENCE 10
349	#define RECORD_LEN_HI 11
350	#define RECORD_LEN_LO 12
351
352	#define STANDARD_PACKET 0
353
354	static int mempacket_test_read(BIO bio, char out, int outl)
355	{
356	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
357	MEMPACKET *thispkt;
358	unsigned char *rec;
359	int rem;
360	unsigned int seq, offset, len, epoch;
361
362	BIO_clear_retry_flags(bio);
363	if ((thispkt = sk_MEMPACKET_value(ctx->pkts, 0)) == NULL
364	\|\| thispkt->num != ctx->currpkt) {
365	/* Probably run out of data */
366	BIO_set_retry_read(bio);
367	return -1;
368	}
369	(void)sk_MEMPACKET_shift(ctx->pkts);
370	ctx->currpkt++;
371
372	if (outl > thispkt->len)
373	outl = thispkt->len;
374
375	if (thispkt->type != INJECT_PACKET_IGNORE_REC_SEQ
376	&& (ctx->injected \|\| ctx->droprec >= 0)) {
377	/*
378	* Overwrite the record sequence number. We strictly number them in
379	* the order received. Since we are actually a reliable transport
380	* we know that there won't be any re-ordering. We overwrite to deal
381	* with any packets that have been injected
382	*/
383	for (rem = thispkt->len, rec = thispkt->data; rem > 0; rem -= len) {
384	if (rem < DTLS1_RT_HEADER_LENGTH)
385	return -1;
386	epoch = (rec[EPOCH_HI] << 8) \| rec[EPOCH_LO];
387	if (epoch != ctx->epoch) {
388	ctx->epoch = epoch;
389	ctx->currrec = 0;
390	}
391	seq = ctx->currrec;
392	offset = 0;
393	do {
394	rec[RECORD_SEQUENCE - offset] = seq & 0xFF;
395	seq >>= 8;
396	offset++;
397	} while (seq > 0);
398
399	len = ((rec[RECORD_LEN_HI] << 8) \| rec[RECORD_LEN_LO])
400	+ DTLS1_RT_HEADER_LENGTH;
401	if (rem < (int)len)
402	return -1;
403	if (ctx->droprec == (int)ctx->currrec && ctx->dropepoch == epoch) {
404	if (rem > (int)len)
405	memmove(rec, rec + len, rem - len);
406	outl -= len;
407	ctx->droprec = -1;
408	if (outl == 0)
409	BIO_set_retry_read(bio);
410	} else {
411	rec += len;
412	}
413
414	ctx->currrec++;
415	}
416	}
417
418	memcpy(out, thispkt->data, outl);
419	mempacket_free(thispkt);
420	return outl;
421	}
422
423	/*
424	* Look for records from different epochs in the last datagram and swap them
425	* around
426	*/
427	int mempacket_swap_epoch(BIO *bio)
428	{
429	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
430	MEMPACKET *thispkt;
431	int rem, len, prevlen = 0, pktnum;
432	unsigned char rec, prevrec = NULL, *tmp;
433	unsigned int epoch;
434	int numpkts = sk_MEMPACKET_num(ctx->pkts);
435
436	if (numpkts <= 0)
437	return 0;
438
439	/*
440	* If there are multiple packets we only look in the last one. This should
441	* always be the one where any epoch change occurs.
442	*/
443	thispkt = sk_MEMPACKET_value(ctx->pkts, numpkts - 1);
444	if (thispkt == NULL)
445	return 0;
446
447	for (rem = thispkt->len, rec = thispkt->data; rem > 0; rem -= len, rec += len) {
448	if (rem < DTLS1_RT_HEADER_LENGTH)
449	return 0;
450	epoch = (rec[EPOCH_HI] << 8) \| rec[EPOCH_LO];
451	len = ((rec[RECORD_LEN_HI] << 8) \| rec[RECORD_LEN_LO])
452	+ DTLS1_RT_HEADER_LENGTH;
453	if (rem < len)
454	return 0;
455
456	/* Assumes the epoch change does not happen on the first record */
457	if (epoch != ctx->epoch) {
458	if (prevrec == NULL)
459	return 0;
460
461	/*
462	* We found 2 records with different epochs. Take a copy of the
463	* earlier record
464	*/
465	tmp = OPENSSL_malloc(prevlen);
466	if (tmp == NULL)
467	return 0;
468
469	memcpy(tmp, prevrec, prevlen);
470	/*
471	* Move everything from this record onwards, including any trailing
472	* records, and overwrite the earlier record
473	*/
474	memmove(prevrec, rec, rem);
475	thispkt->len -= prevlen;
476	pktnum = thispkt->num;
477
478	/*
479	* Create a new packet for the earlier record that we took out and
480	* add it to the end of the packet list.
481	*/
482	thispkt = OPENSSL_malloc(sizeof(*thispkt));
483	if (thispkt == NULL) {
484	OPENSSL_free(tmp);
485	return 0;
486	}
487	thispkt->type = INJECT_PACKET;
488	thispkt->data = tmp;
489	thispkt->len = prevlen;
490	thispkt->num = pktnum + 1;
491	if (sk_MEMPACKET_insert(ctx->pkts, thispkt, numpkts) <= 0) {
492	OPENSSL_free(tmp);
493	OPENSSL_free(thispkt);
494	return 0;
495	}
496
497	return 1;
498	}
499	prevrec = rec;
500	prevlen = len;
501	}
502
503	return 0;
504	}
505
506	/* Move packet from position s to position d in the list (d < s) */
507	int mempacket_move_packet(BIO *bio, int d, int s)
508	{
509	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
510	MEMPACKET *thispkt;
511	int numpkts = sk_MEMPACKET_num(ctx->pkts);
512	int i;
513
514	if (d >= s)
515	return 0;
516
517	/* We need at least s + 1 packets to be able to swap them */
518	if (numpkts <= s)
519	return 0;
520
521	/* Get the packet at position s */
522	thispkt = sk_MEMPACKET_value(ctx->pkts, s);
523	if (thispkt == NULL)
524	return 0;
525
526	/* Remove and re-add it */
527	if (sk_MEMPACKET_delete(ctx->pkts, s) != thispkt)
528	return 0;
529
530	thispkt->num -= (s - d);
531	if (sk_MEMPACKET_insert(ctx->pkts, thispkt, d) <= 0)
532	return 0;
533
534	/* Increment the packet numbers for moved packets */
535	for (i = d + 1; i <= s; i++) {
536	thispkt = sk_MEMPACKET_value(ctx->pkts, i);
537	thispkt->num++;
538	}
539	return 1;
540	}
541
542	int mempacket_test_inject(BIO bio, const char in, int inl, int pktnum,
543	int type)
544	{
545	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
546	MEMPACKET thispkt = NULL, looppkt, nextpkt, allpkts[3];
547	int i, duprec;
548	const unsigned char inu = (const unsigned char )in;
549	size_t len = ((inu[RECORD_LEN_HI] << 8) \| inu[RECORD_LEN_LO])
550	+ DTLS1_RT_HEADER_LENGTH;
551
552	if (ctx == NULL)
553	return -1;
554
555	if ((size_t)inl < len)
556	return -1;
557
558	if ((size_t)inl == len)
559	duprec = 0;
560	else
561	duprec = ctx->duprec > 0;
562
563	/* We don't support arbitrary injection when duplicating records */
564	if (duprec && pktnum != -1)
565	return -1;
566
567	/* We only allow injection before we've started writing any data */
568	if (pktnum >= 0) {
569	if (ctx->noinject)
570	return -1;
571	ctx->injected = 1;
572	} else {
573	ctx->noinject = 1;
574	}
575
576	for (i = 0; i < (duprec ? 3 : 1); i++) {
577	if (!TEST_ptr(allpkts[i] = OPENSSL_malloc(sizeof(*thispkt))))
578	goto err;
579	thispkt = allpkts[i];
580
581	if (!TEST_ptr(thispkt->data = OPENSSL_malloc(inl)))
582	goto err;
583	/*
584	* If we are duplicating the packet, we duplicate it three times. The
585	* first two times we drop the first record if there are more than one.
586	* In this way we know that libssl will not be able to make progress
587	* until it receives the last packet, and hence will be forced to
588	* buffer these records.
589	*/
590	if (duprec && i != 2) {
591	memcpy(thispkt->data, in + len, inl - len);
592	thispkt->len = inl - len;
593	} else {
594	memcpy(thispkt->data, in, inl);
595	thispkt->len = inl;
596	}
597	thispkt->num = (pktnum >= 0) ? (unsigned int)pktnum : ctx->lastpkt + i;
598	thispkt->type = type;
599	}
600
601	for (i = 0; i < sk_MEMPACKET_num(ctx->pkts); i++) {
602	if (!TEST_ptr(looppkt = sk_MEMPACKET_value(ctx->pkts, i)))
603	goto err;
604	/* Check if we found the right place to insert this packet */
605	if (looppkt->num > thispkt->num) {
606	if (sk_MEMPACKET_insert(ctx->pkts, thispkt, i) == 0)
607	goto err;
608	/* If we're doing up front injection then we're done */
609	if (pktnum >= 0)
610	return inl;
611	/*
612	* We need to do some accounting on lastpkt. We increment it first,
613	* but it might now equal the value of injected packets, so we need
614	* to skip over those
615	*/
616	ctx->lastpkt++;
617	do {
618	i++;
619	nextpkt = sk_MEMPACKET_value(ctx->pkts, i);
620	if (nextpkt != NULL && nextpkt->num == ctx->lastpkt)
621	ctx->lastpkt++;
622	else
623	return inl;
624	} while(1);
625	} else if (looppkt->num == thispkt->num) {
626	if (!ctx->noinject) {
627	/* We injected two packets with the same packet number! */
628	goto err;
629	}
630	ctx->lastpkt++;
631	thispkt->num++;
632	}
633	}
634	/*
635	* We didn't find any packets with a packet number equal to or greater than
636	* this one, so we just add it onto the end
637	*/
638	for (i = 0; i < (duprec ? 3 : 1); i++) {
639	thispkt = allpkts[i];
640	if (!sk_MEMPACKET_push(ctx->pkts, thispkt))
641	goto err;
642
643	if (pktnum < 0)
644	ctx->lastpkt++;
645	}
646
647	return inl;
648
649	err:
650	for (i = 0; i < (ctx->duprec > 0 ? 3 : 1); i++)
651	mempacket_free(allpkts[i]);
652	return -1;
653	}
654
655	static int mempacket_test_write(BIO bio, const char in, int inl)
656	{
657	return mempacket_test_inject(bio, in, inl, -1, STANDARD_PACKET);
658	}
659
660	static long mempacket_test_ctrl(BIO bio, int cmd, long num, void ptr)
661	{
662	long ret = 1;
663	MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
664	MEMPACKET *thispkt;
665
666	switch (cmd) {
667	case BIO_CTRL_EOF:
668	ret = (long)(sk_MEMPACKET_num(ctx->pkts) == 0);
669	break;
670	case BIO_CTRL_GET_CLOSE:
671	ret = BIO_get_shutdown(bio);
672	break;
673	case BIO_CTRL_SET_CLOSE:
674	BIO_set_shutdown(bio, (int)num);
675	break;
676	case BIO_CTRL_WPENDING:
677	ret = 0L;
678	break;
679	case BIO_CTRL_PENDING:
680	thispkt = sk_MEMPACKET_value(ctx->pkts, 0);
681	if (thispkt == NULL)
682	ret = 0;
683	else
684	ret = thispkt->len;
685	break;
686	case BIO_CTRL_FLUSH:
687	ret = 1;
688	break;
689	case MEMPACKET_CTRL_SET_DROP_EPOCH:
690	ctx->dropepoch = (unsigned int)num;
691	break;
692	case MEMPACKET_CTRL_SET_DROP_REC:
693	ctx->droprec = (int)num;
694	break;
695	case MEMPACKET_CTRL_GET_DROP_REC:
696	ret = ctx->droprec;
697	break;
698	case MEMPACKET_CTRL_SET_DUPLICATE_REC:
699	ctx->duprec = (int)num;
700	break;
701	case BIO_CTRL_RESET:
702	case BIO_CTRL_DUP:
703	case BIO_CTRL_PUSH:
704	case BIO_CTRL_POP:
705	default:
706	ret = 0;
707	break;
708	}
709	return ret;
710	}
711
712	static int mempacket_test_gets(BIO bio, char buf, int size)
713	{
714	/* We don't support this - not needed anyway */
715	return -1;
716	}
717
718	static int mempacket_test_puts(BIO bio, const char str)
719	{
720	return mempacket_test_write(bio, str, strlen(str));
721	}
722
723	static int always_retry_new(BIO *bi);
724	static int always_retry_free(BIO *a);
725	static int always_retry_read(BIO b, char out, int outl);
726	static int always_retry_write(BIO b, const char in, int inl);
727	static long always_retry_ctrl(BIO b, int cmd, long num, void ptr);
728	static int always_retry_gets(BIO bp, char buf, int size);
729	static int always_retry_puts(BIO bp, const char str);
730
731	const BIO_METHOD *bio_s_always_retry(void)
732	{
733	if (meth_always_retry == NULL) {
734	if (!TEST_ptr(meth_always_retry = BIO_meth_new(BIO_TYPE_ALWAYS_RETRY,
735	"Always Retry"))
736	\|\| !TEST_true(BIO_meth_set_write(meth_always_retry,
737	always_retry_write))
738	\|\| !TEST_true(BIO_meth_set_read(meth_always_retry,
739	always_retry_read))
740	\|\| !TEST_true(BIO_meth_set_puts(meth_always_retry,
741	always_retry_puts))
742	\|\| !TEST_true(BIO_meth_set_gets(meth_always_retry,
743	always_retry_gets))
744	\|\| !TEST_true(BIO_meth_set_ctrl(meth_always_retry,
745	always_retry_ctrl))
746	\|\| !TEST_true(BIO_meth_set_create(meth_always_retry,
747	always_retry_new))
748	\|\| !TEST_true(BIO_meth_set_destroy(meth_always_retry,
749	always_retry_free)))
750	return NULL;
751	}
752	return meth_always_retry;
753	}
754
755	void bio_s_always_retry_free(void)
756	{
757	BIO_meth_free(meth_always_retry);
758	}
759
760	static int always_retry_new(BIO *bio)
761	{
762	BIO_set_init(bio, 1);
763	return 1;
764	}
765
766	static int always_retry_free(BIO *bio)
767	{
768	BIO_set_data(bio, NULL);
769	BIO_set_init(bio, 0);
770	return 1;
771	}
772
773	void set_always_retry_err_val(int err)
774	{
775	retry_err = err;
776	}
777
778	static int always_retry_read(BIO bio, char out, int outl)
779	{
780	BIO_set_retry_read(bio);
781	return retry_err;
782	}
783
784	static int always_retry_write(BIO bio, const char in, int inl)
785	{
786	BIO_set_retry_write(bio);
787	return retry_err;
788	}
789
790	static long always_retry_ctrl(BIO bio, int cmd, long num, void ptr)
791	{
792	long ret = 1;
793
794	switch (cmd) {
795	case BIO_CTRL_FLUSH:
796	BIO_set_retry_write(bio);
797	/* fall through */
798	case BIO_CTRL_EOF:
799	case BIO_CTRL_RESET:
800	case BIO_CTRL_DUP:
801	case BIO_CTRL_PUSH:
802	case BIO_CTRL_POP:
803	default:
804	ret = 0;
805	break;
806	}
807	return ret;
808	}
809
810	static int always_retry_gets(BIO bio, char buf, int size)
811	{
812	BIO_set_retry_read(bio);
813	return retry_err;
814	}
815
816	static int always_retry_puts(BIO bio, const char str)
817	{
818	BIO_set_retry_write(bio);
819	return retry_err;
820	}
821
822	int create_ssl_ctx_pair(OSSL_LIB_CTX libctx, const SSL_METHOD sm,
823	const SSL_METHOD *cm, int min_proto_version,
824	int max_proto_version, SSL_CTX sctx, SSL_CTX cctx,
825	char certfile, char privkeyfile)
826	{
827	SSL_CTX *serverctx = NULL;
828	SSL_CTX *clientctx = NULL;
829
830	if (sctx != NULL) {
831	if (*sctx != NULL)
832	serverctx = *sctx;
833	else if (!TEST_ptr(serverctx = SSL_CTX_new_ex(libctx, NULL, sm))
834	\|\| !TEST_true(SSL_CTX_set_options(serverctx,
835	SSL_OP_ALLOW_CLIENT_RENEGOTIATION)))
836	goto err;
837	}
838
839	if (cctx != NULL) {
840	if (*cctx != NULL)
841	clientctx = *cctx;
842	else if (!TEST_ptr(clientctx = SSL_CTX_new_ex(libctx, NULL, cm)))
843	goto err;
844	}
845
846	#if !defined(OPENSSL_NO_TLS1_3) \
847	&& defined(OPENSSL_NO_EC) \
848	&& defined(OPENSSL_NO_DH)
849	/*
850	* There are no usable built-in TLSv1.3 groups if ec and dh are both
851	* disabled
852	*/
853	if (max_proto_version == 0
854	&& (sm == TLS_server_method() \|\| cm == TLS_client_method()))
855	max_proto_version = TLS1_2_VERSION;
856	#endif
857
858	if (serverctx != NULL
859	&& ((min_proto_version > 0
860	&& !TEST_true(SSL_CTX_set_min_proto_version(serverctx,
861	min_proto_version)))
862	\|\| (max_proto_version > 0
863	&& !TEST_true(SSL_CTX_set_max_proto_version(serverctx,
864	max_proto_version)))))
865	goto err;
866	if (clientctx != NULL
867	&& ((min_proto_version > 0
868	&& !TEST_true(SSL_CTX_set_min_proto_version(clientctx,
869	min_proto_version)))
870	\|\| (max_proto_version > 0
871	&& !TEST_true(SSL_CTX_set_max_proto_version(clientctx,
872	max_proto_version)))))
873	goto err;
874
875	if (serverctx != NULL && certfile != NULL && privkeyfile != NULL) {
876	if (!TEST_int_eq(SSL_CTX_use_certificate_file(serverctx, certfile,
877	SSL_FILETYPE_PEM), 1)
878	\|\| !TEST_int_eq(SSL_CTX_use_PrivateKey_file(serverctx,
879	privkeyfile,
880	SSL_FILETYPE_PEM), 1)
881	\|\| !TEST_int_eq(SSL_CTX_check_private_key(serverctx), 1))
882	goto err;
883	}
884
885	if (sctx != NULL)
886	*sctx = serverctx;
887	if (cctx != NULL)
888	*cctx = clientctx;
889	return 1;
890
891	err:
892	if (sctx != NULL && *sctx == NULL)
893	SSL_CTX_free(serverctx);
894	if (cctx != NULL && *cctx == NULL)
895	SSL_CTX_free(clientctx);
896	return 0;
897	}
898
899	#define MAXLOOPS 1000000
900
901	#if !defined(OPENSSL_NO_KTLS) && !defined(OPENSSL_NO_SOCK)
902	static int set_nb(int fd)
903	{
904	int flags;
905
906	flags = fcntl(fd,F_GETFL,0);
907	if (flags == -1)
908	return flags;
909	flags = fcntl(fd, F_SETFL, flags \| O_NONBLOCK);
910	return flags;
911	}
912
913	int create_test_sockets(int cfdp, int sfdp)
914	{
915	struct sockaddr_in sin;
916	const char *host = "127.0.0.1";
917	int cfd_connected = 0, ret = 0;
918	socklen_t slen = sizeof(sin);
919	int afd = -1, cfd = -1, sfd = -1;
920
921	memset ((char *) &sin, 0, sizeof(sin));
922	sin.sin_family = AF_INET;
923	sin.sin_addr.s_addr = inet_addr(host);
924
925	afd = socket(AF_INET, SOCK_STREAM, 0);
926	if (afd < 0)
927	return 0;
928
929	if (bind(afd, (struct sockaddr*)&sin, sizeof(sin)) < 0)
930	goto out;
931
932	if (getsockname(afd, (struct sockaddr*)&sin, &slen) < 0)
933	goto out;
934
935	if (listen(afd, 1) < 0)
936	goto out;
937
938	cfd = socket(AF_INET, SOCK_STREAM, 0);
939	if (cfd < 0)
940	goto out;
941
942	if (set_nb(afd) == -1)
943	goto out;
944
945	while (sfd == -1 \|\| !cfd_connected ) {
946	sfd = accept(afd, NULL, 0);
947	if (sfd == -1 && errno != EAGAIN)
948	goto out;
949
950	if (!cfd_connected && connect(cfd, (struct sockaddr*)&sin, sizeof(sin)) < 0)
951	goto out;
952	else
953	cfd_connected = 1;
954	}
955
956	if (set_nb(cfd) == -1 \|\| set_nb(sfd) == -1)
957	goto out;
958	ret = 1;
959	*cfdp = cfd;
960	*sfdp = sfd;
961	goto success;
962
963	out:
964	if (cfd != -1)
965	close(cfd);
966	if (sfd != -1)
967	close(sfd);
968	success:
969	if (afd != -1)
970	close(afd);
971	return ret;
972	}
973
974	int create_ssl_objects2(SSL_CTX serverctx, SSL_CTX clientctx, SSL **sssl,
975	SSL **cssl, int sfd, int cfd)
976	{
977	SSL serverssl = NULL, clientssl = NULL;
978	BIO s_to_c_bio = NULL, c_to_s_bio = NULL;
979
980	if (*sssl != NULL)
981	serverssl = *sssl;
982	else if (!TEST_ptr(serverssl = SSL_new(serverctx)))
983	goto error;
984	if (*cssl != NULL)
985	clientssl = *cssl;
986	else if (!TEST_ptr(clientssl = SSL_new(clientctx)))
987	goto error;
988
989	if (!TEST_ptr(s_to_c_bio = BIO_new_socket(sfd, BIO_NOCLOSE))
990	\|\| !TEST_ptr(c_to_s_bio = BIO_new_socket(cfd, BIO_NOCLOSE)))
991	goto error;
992
993	SSL_set_bio(clientssl, c_to_s_bio, c_to_s_bio);
994	SSL_set_bio(serverssl, s_to_c_bio, s_to_c_bio);
995	*sssl = serverssl;
996	*cssl = clientssl;
997	return 1;
998
999	error:
1000	SSL_free(serverssl);
1001	SSL_free(clientssl);
1002	BIO_free(s_to_c_bio);
1003	BIO_free(c_to_s_bio);
1004	return 0;
1005	}
1006	#endif
1007
1008	/*
1009	* NOTE: Transfers control of the BIOs - this function will free them on error
1010	*/
1011	int create_ssl_objects(SSL_CTX serverctx, SSL_CTX clientctx, SSL **sssl,
1012	SSL *cssl, BIO s_to_c_fbio, BIO *c_to_s_fbio)
1013	{
1014	SSL serverssl = NULL, clientssl = NULL;
1015	BIO s_to_c_bio = NULL, c_to_s_bio = NULL;
1016
1017	if (*sssl != NULL)
1018	serverssl = *sssl;
1019	else if (!TEST_ptr(serverssl = SSL_new(serverctx)))
1020	goto error;
1021	if (*cssl != NULL)
1022	clientssl = *cssl;
1023	else if (!TEST_ptr(clientssl = SSL_new(clientctx)))
1024	goto error;
1025
1026	if (SSL_is_dtls(clientssl)) {
1027	if (!TEST_ptr(s_to_c_bio = BIO_new(bio_s_mempacket_test()))
1028	\|\| !TEST_ptr(c_to_s_bio = BIO_new(bio_s_mempacket_test())))
1029	goto error;
1030	} else {
1031	if (!TEST_ptr(s_to_c_bio = BIO_new(BIO_s_mem()))
1032	\|\| !TEST_ptr(c_to_s_bio = BIO_new(BIO_s_mem())))
1033	goto error;
1034	}
1035
1036	if (s_to_c_fbio != NULL
1037	&& !TEST_ptr(s_to_c_bio = BIO_push(s_to_c_fbio, s_to_c_bio)))
1038	goto error;
1039	if (c_to_s_fbio != NULL
1040	&& !TEST_ptr(c_to_s_bio = BIO_push(c_to_s_fbio, c_to_s_bio)))
1041	goto error;
1042
1043	/* Set Non-blocking IO behaviour */
1044	BIO_set_mem_eof_return(s_to_c_bio, -1);
1045	BIO_set_mem_eof_return(c_to_s_bio, -1);
1046
1047	/* Up ref these as we are passing them to two SSL objects */
1048	SSL_set_bio(serverssl, c_to_s_bio, s_to_c_bio);
1049	BIO_up_ref(s_to_c_bio);
1050	BIO_up_ref(c_to_s_bio);
1051	SSL_set_bio(clientssl, s_to_c_bio, c_to_s_bio);
1052	*sssl = serverssl;
1053	*cssl = clientssl;
1054	return 1;
1055
1056	error:
1057	SSL_free(serverssl);
1058	SSL_free(clientssl);
1059	BIO_free(s_to_c_bio);
1060	BIO_free(c_to_s_bio);
1061	BIO_free(s_to_c_fbio);
1062	BIO_free(c_to_s_fbio);
1063
1064	return 0;
1065	}
1066
1067	/*
1068	* Create an SSL connection, but does not read any post-handshake
1069	* NewSessionTicket messages.
1070	* If \|read\| is set and we're using DTLS then we will attempt to SSL_read on
1071	* the connection once we've completed one half of it, to ensure any retransmits
1072	* get triggered.
1073	* We stop the connection attempt (and return a failure value) if either peer
1074	* has SSL_get_error() return the value in the \|want\| parameter. The connection
1075	* attempt could be restarted by a subsequent call to this function.
1076	*/
1077	int create_bare_ssl_connection(SSL serverssl, SSL clientssl, int want,
1078	int read)
1079	{
1080	int retc = -1, rets = -1, err, abortctr = 0;
1081	int clienterr = 0, servererr = 0;
1082	int isdtls = SSL_is_dtls(serverssl);
1083
1084	do {
1085	err = SSL_ERROR_WANT_WRITE;
1086	while (!clienterr && retc <= 0 && err == SSL_ERROR_WANT_WRITE) {
1087	retc = SSL_connect(clientssl);
1088	if (retc <= 0)
1089	err = SSL_get_error(clientssl, retc);
1090	}
1091
1092	if (!clienterr && retc <= 0 && err != SSL_ERROR_WANT_READ) {
1093	TEST_info("SSL_connect() failed %d, %d", retc, err);
1094	if (want != SSL_ERROR_SSL)
1095	TEST_openssl_errors();
1096	clienterr = 1;
1097	}
1098	if (want != SSL_ERROR_NONE && err == want)
1099	return 0;
1100
1101	err = SSL_ERROR_WANT_WRITE;
1102	while (!servererr && rets <= 0 && err == SSL_ERROR_WANT_WRITE) {
1103	rets = SSL_accept(serverssl);
1104	if (rets <= 0)
1105	err = SSL_get_error(serverssl, rets);
1106	}
1107
1108	if (!servererr && rets <= 0
1109	&& err != SSL_ERROR_WANT_READ
1110	&& err != SSL_ERROR_WANT_X509_LOOKUP) {
1111	TEST_info("SSL_accept() failed %d, %d", rets, err);
1112	if (want != SSL_ERROR_SSL)
1113	TEST_openssl_errors();
1114	servererr = 1;
1115	}
1116	if (want != SSL_ERROR_NONE && err == want)
1117	return 0;
1118	if (clienterr && servererr)
1119	return 0;
1120	if (isdtls && read) {
1121	unsigned char buf[20];
1122
1123	/* Trigger any retransmits that may be appropriate */
1124	if (rets > 0 && retc <= 0) {
1125	if (SSL_read(serverssl, buf, sizeof(buf)) > 0) {
1126	/* We don't expect this to succeed! */
1127	TEST_info("Unexpected SSL_read() success!");
1128	return 0;
1129	}
1130	}
1131	if (retc > 0 && rets <= 0) {
1132	if (SSL_read(clientssl, buf, sizeof(buf)) > 0) {
1133	/* We don't expect this to succeed! */
1134	TEST_info("Unexpected SSL_read() success!");
1135	return 0;
1136	}
1137	}
1138	}
1139	if (++abortctr == MAXLOOPS) {
1140	TEST_info("No progress made");
1141	return 0;
1142	}
1143	if (isdtls && abortctr <= 50 && (abortctr % 10) == 0) {
1144	/*
1145	* It looks like we're just spinning. Pause for a short period to
1146	* give the DTLS timer a chance to do something. We only do this for
1147	* the first few times to prevent hangs.
1148	*/
1149	ossl_sleep(50);
1150	}
1151	} while (retc <=0 \|\| rets <= 0);
1152
1153	return 1;
1154	}
1155
1156	/*
1157	* Create an SSL connection including any post handshake NewSessionTicket
1158	* messages.
1159	*/
1160	int create_ssl_connection(SSL serverssl, SSL clientssl, int want)
1161	{
1162	int i;
1163	unsigned char buf;
1164	size_t readbytes;
1165
1166	if (!create_bare_ssl_connection(serverssl, clientssl, want, 1))
1167	return 0;
1168
1169	/*
1170	* We attempt to read some data on the client side which we expect to fail.
1171	* This will ensure we have received the NewSessionTicket in TLSv1.3 where
1172	* appropriate. We do this twice because there are 2 NewSessionTickets.
1173	*/
1174	for (i = 0; i < 2; i++) {
1175	if (SSL_read_ex(clientssl, &buf, sizeof(buf), &readbytes) > 0) {
1176	if (!TEST_ulong_eq(readbytes, 0))
1177	return 0;
1178	} else if (!TEST_int_eq(SSL_get_error(clientssl, 0),
1179	SSL_ERROR_WANT_READ)) {
1180	return 0;
1181	}
1182	}
1183
1184	return 1;
1185	}
1186
1187	void shutdown_ssl_connection(SSL serverssl, SSL clientssl)
1188	{
1189	SSL_shutdown(clientssl);
1190	SSL_shutdown(serverssl);
1191	SSL_free(serverssl);
1192	SSL_free(clientssl);
1193	}
1194
1195	ENGINE *load_dasync(void)
1196	{
1197	#if !defined(OPENSSL_NO_TLS1_2) && !defined(OPENSSL_NO_DYNAMIC_ENGINE)
1198	ENGINE *e;
1199
1200	if (!TEST_ptr(e = ENGINE_by_id("dasync")))
1201	return NULL;
1202
1203	if (!TEST_true(ENGINE_init(e))) {
1204	ENGINE_free(e);
1205	return NULL;
1206	}
1207
1208	if (!TEST_true(ENGINE_register_ciphers(e))) {
1209	ENGINE_free(e);
1210	return NULL;
1211	}
1212
1213	return e;
1214	#else
1215	return NULL;
1216	#endif
1217	}

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