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 #include <string.h>
11 #include <openssl/buffer.h>
12 #include <openssl/rand.h>
13 #include "internal/packet_quic.h"
14 #include "testutil.h"
15
16 static const unsigned char simple1[] = { 0xff };
17 static const unsigned char simple2[] = { 0x01, 0xff };
18 static const unsigned char simple3[] = { 0x00, 0x00, 0x00, 0x01, 0xff };
19 static const unsigned char nestedsub[] = { 0x03, 0xff, 0x01, 0xff };
20 static const unsigned char seqsub[] = { 0x01, 0xff, 0x01, 0xff };
21 static const unsigned char empty[] = { 0x00 };
22 static const unsigned char alloc[] = { 0x02, 0xfe, 0xff };
23 static const unsigned char submem[] = { 0x03, 0x02, 0xfe, 0xff };
24 static const unsigned char fixed[] = { 0xff, 0xff, 0xff };
25 static const unsigned char simpleder[] = {
26 0xfc, 0x04, 0x00, 0x01, 0x02, 0x03, 0xff, 0xfe, 0xfd
27 };
28
29 #ifndef OPENSSL_NO_QUIC
30
31 /* QUIC sub-packet with 4-byte length prefix, containing a 1-byte vlint */
32 static const unsigned char quic1[] = { 0x80, 0x00, 0x00, 0x01, 0x09 };
33 /* QUIC sub-packet with 1-byte length prefix, containing a 1-byte vlint */
34 static const unsigned char quic2[] = { 0x01, 0x09 };
35 /* QUIC sub-packet with 2-byte length prefix, containing a 2-byte vlint */
36 static const unsigned char quic3[] = { 0x40, 0x02, 0x40, 0x41 };
37 /* QUIC sub-packet with 8-byte length prefix, containing a 4-byte vlint */
38 static const unsigned char quic4[] = {
39 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
40 0x80, 0x01, 0x3c, 0x6a
41 };
42 /* QUIC sub-packet with 8-byte length prefix, containing a 8-byte vlint */
43 static const unsigned char quic5[] = {
44 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08,
45 0xef, 0x77, 0x21, 0x3f, 0x3f, 0x50, 0x5b, 0xa5
46 };
47 /* QUIC sub-packet, length known up-front */
48 static const unsigned char quic6[] = { 0x03, 0x55, 0x66, 0x77 };
49 /* Nested and sequential sub-packets with length prefixes */
50 static const unsigned char quic7[] = {
51 0x07, 0x80, 0x00, 0x00, 0x08, 0x65, 0x14, 0x40, 0x01, 0x05,
52 0x40, 0x01, 0x11, 0x40, 0x01, 0x12, 0x40, 0x01, 0x13
53 };
54
55 #endif
56
57 static BUF_MEM *buf;
58
cleanup(WPACKET * pkt)59 static int cleanup(WPACKET *pkt)
60 {
61 WPACKET_cleanup(pkt);
62 return 0;
63 }
64
test_WPACKET_init(void)65 static int test_WPACKET_init(void)
66 {
67 WPACKET pkt;
68 int i;
69 size_t written;
70 unsigned char sbuf[3];
71
72 if (!TEST_true(WPACKET_init(&pkt, buf))
73 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
74 /* Closing a top level WPACKET should fail */
75 || !TEST_false(WPACKET_close(&pkt))
76 /* Finishing a top level WPACKET should succeed */
77 || !TEST_true(WPACKET_finish(&pkt))
78 /*
79 * Can't call close or finish on a WPACKET that's already
80 * finished.
81 */
82 || !TEST_false(WPACKET_close(&pkt))
83 || !TEST_false(WPACKET_finish(&pkt))
84 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
85 || !TEST_mem_eq(buf->data, written, simple1, sizeof(simple1)))
86 return cleanup(&pkt);
87
88 /* Now try with a one byte length prefix */
89 if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
90 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
91 || !TEST_true(WPACKET_finish(&pkt))
92 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
93 || !TEST_mem_eq(buf->data, written, simple2, sizeof(simple2)))
94 return cleanup(&pkt);
95
96 /* And a longer length prefix */
97 if (!TEST_true(WPACKET_init_len(&pkt, buf, 4))
98 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
99 || !TEST_true(WPACKET_finish(&pkt))
100 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
101 || !TEST_mem_eq(buf->data, written, simple3, sizeof(simple3)))
102 return cleanup(&pkt);
103
104 if (!TEST_true(WPACKET_init_len(&pkt, buf, 1)))
105 return cleanup(&pkt);
106 for (i = 1; i < 257; i++) {
107 /*
108 * Putting more bytes in than fit for the size of the length prefix
109 * should fail
110 */
111 if (!TEST_int_eq(WPACKET_put_bytes_u8(&pkt, 0xff), i < 256))
112 return cleanup(&pkt);
113 }
114 if (!TEST_true(WPACKET_finish(&pkt)))
115 return cleanup(&pkt);
116
117 /* Test initialising from a fixed size buffer */
118 if (!TEST_true(WPACKET_init_static_len(&pkt, sbuf, sizeof(sbuf), 0))
119 /* Adding 3 bytes should succeed */
120 || !TEST_true(WPACKET_put_bytes_u24(&pkt, 0xffffff))
121 /* Adding 1 more byte should fail */
122 || !TEST_false(WPACKET_put_bytes_u8(&pkt, 0xff))
123 /* Finishing the top level WPACKET should succeed */
124 || !TEST_true(WPACKET_finish(&pkt))
125 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
126 || !TEST_mem_eq(sbuf, written, fixed, sizeof(sbuf))
127 /* Initialise with 1 len byte */
128 || !TEST_true(WPACKET_init_static_len(&pkt, sbuf, sizeof(sbuf), 1))
129 /* Adding 2 bytes should succeed */
130 || !TEST_true(WPACKET_put_bytes_u16(&pkt, 0xfeff))
131 /* Adding 1 more byte should fail */
132 || !TEST_false(WPACKET_put_bytes_u8(&pkt, 0xff))
133 || !TEST_true(WPACKET_finish(&pkt))
134 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
135 || !TEST_mem_eq(sbuf, written, alloc, sizeof(alloc)))
136 return cleanup(&pkt);
137
138 return 1;
139 }
140
test_WPACKET_set_max_size(void)141 static int test_WPACKET_set_max_size(void)
142 {
143 WPACKET pkt;
144 size_t written;
145
146 if (!TEST_true(WPACKET_init(&pkt, buf))
147 /*
148 * No previous lenbytes set so we should be ok to set the max
149 * possible max size
150 */
151 || !TEST_true(WPACKET_set_max_size(&pkt, SIZE_MAX))
152 /* We should be able to set it smaller too */
153 || !TEST_true(WPACKET_set_max_size(&pkt, SIZE_MAX -1))
154 /* And setting it bigger again should be ok */
155 || !TEST_true(WPACKET_set_max_size(&pkt, SIZE_MAX))
156 || !TEST_true(WPACKET_finish(&pkt)))
157 return cleanup(&pkt);
158
159 if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
160 /*
161 * Should fail because we already consumed 1 byte with the
162 * length
163 */
164 || !TEST_false(WPACKET_set_max_size(&pkt, 0))
165 /*
166 * Max size can't be bigger than biggest that will fit in
167 * lenbytes
168 */
169 || !TEST_false(WPACKET_set_max_size(&pkt, 0x0101))
170 /* It can be the same as the maximum possible size */
171 || !TEST_true(WPACKET_set_max_size(&pkt, 0x0100))
172 /* Or it can be less */
173 || !TEST_true(WPACKET_set_max_size(&pkt, 0x01))
174 /* Should fail because packet is already filled */
175 || !TEST_false(WPACKET_put_bytes_u8(&pkt, 0xff))
176 /* You can't put in more bytes than max size */
177 || !TEST_true(WPACKET_set_max_size(&pkt, 0x02))
178 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
179 || !TEST_false(WPACKET_put_bytes_u8(&pkt, 0xff))
180 || !TEST_true(WPACKET_finish(&pkt))
181 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
182 || !TEST_mem_eq(buf->data, written, simple2, sizeof(simple2)))
183 return cleanup(&pkt);
184
185 return 1;
186 }
187
test_WPACKET_start_sub_packet(void)188 static int test_WPACKET_start_sub_packet(void)
189 {
190 WPACKET pkt;
191 size_t written;
192 size_t len;
193
194 if (!TEST_true(WPACKET_init(&pkt, buf))
195 || !TEST_true(WPACKET_start_sub_packet(&pkt))
196 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
197 /* Can't finish because we have a sub packet */
198 || !TEST_false(WPACKET_finish(&pkt))
199 || !TEST_true(WPACKET_close(&pkt))
200 /* Sub packet is closed so can't close again */
201 || !TEST_false(WPACKET_close(&pkt))
202 /* Now a top level so finish should succeed */
203 || !TEST_true(WPACKET_finish(&pkt))
204 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
205 || !TEST_mem_eq(buf->data, written, simple1, sizeof(simple1)))
206 return cleanup(&pkt);
207
208 /* Single sub-packet with length prefix */
209 if (!TEST_true(WPACKET_init(&pkt, buf))
210 || !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
211 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
212 || !TEST_true(WPACKET_close(&pkt))
213 || !TEST_true(WPACKET_finish(&pkt))
214 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
215 || !TEST_mem_eq(buf->data, written, simple2, sizeof(simple2)))
216 return cleanup(&pkt);
217
218 /* Nested sub-packets with length prefixes */
219 if (!TEST_true(WPACKET_init(&pkt, buf))
220 || !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
221 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
222 || !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
223 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
224 || !TEST_true(WPACKET_get_length(&pkt, &len))
225 || !TEST_size_t_eq(len, 1)
226 || !TEST_true(WPACKET_close(&pkt))
227 || !TEST_true(WPACKET_get_length(&pkt, &len))
228 || !TEST_size_t_eq(len, 3)
229 || !TEST_true(WPACKET_close(&pkt))
230 || !TEST_true(WPACKET_finish(&pkt))
231 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
232 || !TEST_mem_eq(buf->data, written, nestedsub, sizeof(nestedsub)))
233 return cleanup(&pkt);
234
235 /* Sequential sub-packets with length prefixes */
236 if (!TEST_true(WPACKET_init(&pkt, buf))
237 || !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
238 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
239 || !TEST_true(WPACKET_close(&pkt))
240 || !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
241 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
242 || !TEST_true(WPACKET_close(&pkt))
243 || !TEST_true(WPACKET_finish(&pkt))
244 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
245 || !TEST_mem_eq(buf->data, written, seqsub, sizeof(seqsub)))
246 return cleanup(&pkt);
247
248 /* Nested sub-packets with lengths filled before finish */
249 if (!TEST_true(WPACKET_init(&pkt, buf))
250 || !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
251 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
252 || !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
253 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
254 || !TEST_true(WPACKET_get_length(&pkt, &len))
255 || !TEST_size_t_eq(len, 1)
256 || !TEST_true(WPACKET_close(&pkt))
257 || !TEST_true(WPACKET_get_length(&pkt, &len))
258 || !TEST_size_t_eq(len, 3)
259 || !TEST_true(WPACKET_close(&pkt))
260 || !TEST_true(WPACKET_fill_lengths(&pkt))
261 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
262 || !TEST_mem_eq(buf->data, written, nestedsub, sizeof(nestedsub))
263 || !TEST_true(WPACKET_finish(&pkt)))
264 return cleanup(&pkt);
265
266 return 1;
267 }
268
269
test_WPACKET_set_flags(void)270 static int test_WPACKET_set_flags(void)
271 {
272 WPACKET pkt;
273 size_t written;
274
275 /* Set packet to be non-zero length */
276 if (!TEST_true(WPACKET_init(&pkt, buf))
277 || !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_NON_ZERO_LENGTH))
278 /* Should fail because of zero length */
279 || !TEST_false(WPACKET_finish(&pkt))
280 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
281 || !TEST_true(WPACKET_finish(&pkt))
282 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
283 || !TEST_mem_eq(buf->data, written, simple1, sizeof(simple1)))
284 return cleanup(&pkt);
285
286 /* Repeat above test in a sub-packet */
287 if (!TEST_true(WPACKET_init(&pkt, buf))
288 || !TEST_true(WPACKET_start_sub_packet(&pkt))
289 || !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_NON_ZERO_LENGTH))
290 /* Should fail because of zero length */
291 || !TEST_false(WPACKET_close(&pkt))
292 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
293 || !TEST_true(WPACKET_close(&pkt))
294 || !TEST_true(WPACKET_finish(&pkt))
295 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
296 || !TEST_mem_eq(buf->data, written, simple1, sizeof(simple1)))
297 return cleanup(&pkt);
298
299 /* Set packet to abandon non-zero length */
300 if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
301 || !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH))
302 || !TEST_true(WPACKET_finish(&pkt))
303 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
304 || !TEST_size_t_eq(written, 0))
305 return cleanup(&pkt);
306
307 /* Repeat above test but only abandon a sub-packet */
308 if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
309 || !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
310 || !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH))
311 || !TEST_true(WPACKET_close(&pkt))
312 || !TEST_true(WPACKET_finish(&pkt))
313 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
314 || !TEST_mem_eq(buf->data, written, empty, sizeof(empty)))
315 return cleanup(&pkt);
316
317 /* And repeat with a non empty sub-packet */
318 if (!TEST_true(WPACKET_init(&pkt, buf))
319 || !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
320 || !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH))
321 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
322 || !TEST_true(WPACKET_close(&pkt))
323 || !TEST_true(WPACKET_finish(&pkt))
324 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
325 || !TEST_mem_eq(buf->data, written, simple2, sizeof(simple2)))
326 return cleanup(&pkt);
327 return 1;
328 }
329
test_WPACKET_allocate_bytes(void)330 static int test_WPACKET_allocate_bytes(void)
331 {
332 WPACKET pkt;
333 size_t written;
334 unsigned char *bytes;
335
336 if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
337 || !TEST_true(WPACKET_allocate_bytes(&pkt, 2, &bytes)))
338 return cleanup(&pkt);
339 bytes[0] = 0xfe;
340 bytes[1] = 0xff;
341 if (!TEST_true(WPACKET_finish(&pkt))
342 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
343 || !TEST_mem_eq(buf->data, written, alloc, sizeof(alloc)))
344 return cleanup(&pkt);
345
346 /* Repeat with WPACKET_sub_allocate_bytes */
347 if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
348 || !TEST_true(WPACKET_sub_allocate_bytes_u8(&pkt, 2, &bytes)))
349 return cleanup(&pkt);
350 bytes[0] = 0xfe;
351 bytes[1] = 0xff;
352 if (!TEST_true(WPACKET_finish(&pkt))
353 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
354 || !TEST_mem_eq(buf->data, written, submem, sizeof(submem)))
355 return cleanup(&pkt);
356
357 return 1;
358 }
359
test_WPACKET_memcpy(void)360 static int test_WPACKET_memcpy(void)
361 {
362 WPACKET pkt;
363 size_t written;
364 const unsigned char bytes[] = { 0xfe, 0xff };
365
366 if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
367 || !TEST_true(WPACKET_memcpy(&pkt, bytes, sizeof(bytes)))
368 || !TEST_true(WPACKET_finish(&pkt))
369 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
370 || !TEST_mem_eq(buf->data, written, alloc, sizeof(alloc)))
371 return cleanup(&pkt);
372
373 /* Repeat with WPACKET_sub_memcpy() */
374 if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
375 || !TEST_true(WPACKET_sub_memcpy_u8(&pkt, bytes, sizeof(bytes)))
376 || !TEST_true(WPACKET_finish(&pkt))
377 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
378 || !TEST_mem_eq(buf->data, written, submem, sizeof(submem)))
379 return cleanup(&pkt);
380
381 return 1;
382 }
383
test_WPACKET_init_der(void)384 static int test_WPACKET_init_der(void)
385 {
386 WPACKET pkt;
387 unsigned char sbuf[1024];
388 unsigned char testdata[] = { 0x00, 0x01, 0x02, 0x03 };
389 unsigned char testdata2[259] = { 0x82, 0x01, 0x00 };
390 size_t written[2];
391 size_t size1, size2;
392 int flags = WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH;
393 int i;
394
395 /* Test initialising for writing DER */
396 if (!TEST_true(WPACKET_init_der(&pkt, sbuf, sizeof(sbuf)))
397 || !TEST_true(WPACKET_put_bytes_u24(&pkt, 0xfffefd))
398 /* Test writing data in a length prefixed sub-packet */
399 || !TEST_true(WPACKET_start_sub_packet(&pkt))
400 || !TEST_true(WPACKET_memcpy(&pkt, testdata, sizeof(testdata)))
401 || !TEST_true(WPACKET_close(&pkt))
402 || !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xfc))
403 /* this sub-packet is empty, and should render zero bytes */
404 || (!TEST_true(WPACKET_start_sub_packet(&pkt))
405 || !TEST_true(WPACKET_set_flags(&pkt, flags))
406 || !TEST_true(WPACKET_get_total_written(&pkt, &size1))
407 || !TEST_true(WPACKET_close(&pkt))
408 || !TEST_true(WPACKET_get_total_written(&pkt, &size2))
409 || !TEST_size_t_eq(size1, size2))
410 || !TEST_true(WPACKET_finish(&pkt))
411 || !TEST_true(WPACKET_get_total_written(&pkt, &written[0]))
412 || !TEST_mem_eq(WPACKET_get_curr(&pkt), written[0], simpleder,
413 sizeof(simpleder)))
414 return cleanup(&pkt);
415
416 /* Generate random packet data for test */
417 if (!TEST_int_gt(RAND_bytes(&testdata2[3], sizeof(testdata2) - 3), 0))
418 return 0;
419
420 /*
421 * Test with a sub-packet that has 2 length bytes. We do 2 passes - first
422 * with a NULL buffer, just to calculate lengths, and a second pass with a
423 * real buffer to actually generate a packet
424 */
425 for (i = 0; i < 2; i++) {
426 if (i == 0) {
427 if (!TEST_true(WPACKET_init_null_der(&pkt)))
428 return 0;
429 } else {
430 if (!TEST_true(WPACKET_init_der(&pkt, sbuf, sizeof(sbuf))))
431 return 0;
432 }
433 if (!TEST_true(WPACKET_start_sub_packet(&pkt))
434 || !TEST_true(WPACKET_memcpy(&pkt, &testdata2[3],
435 sizeof(testdata2) - 3))
436 || !TEST_true(WPACKET_close(&pkt))
437 || !TEST_true(WPACKET_finish(&pkt))
438 || !TEST_true(WPACKET_get_total_written(&pkt, &written[i])))
439 return cleanup(&pkt);
440 }
441
442 /*
443 * Check that the size calculated in the first pass equals the size of the
444 * packet actually generated in the second pass. Also check the generated
445 * packet looks as we expect it to.
446 */
447 if (!TEST_size_t_eq(written[0], written[1])
448 || !TEST_mem_eq(WPACKET_get_curr(&pkt), written[1], testdata2,
449 sizeof(testdata2)))
450 return 0;
451
452 return 1;
453 }
454
455 #ifndef OPENSSL_NO_QUIC
456
test_WPACKET_quic(void)457 static int test_WPACKET_quic(void)
458 {
459 WPACKET pkt;
460 size_t written, len;
461 unsigned char *bytes;
462
463 /* QUIC sub-packet with 4-byte length prefix, containing a 1-byte vlint */
464 if (!TEST_true(WPACKET_init(&pkt, buf))
465 || !TEST_true(WPACKET_start_quic_sub_packet(&pkt))
466 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x09))
467 /* Can't finish because we have a sub packet */
468 || !TEST_false(WPACKET_finish(&pkt))
469 || !TEST_true(WPACKET_close(&pkt))
470 /* Sub packet is closed so can't close again */
471 || !TEST_false(WPACKET_close(&pkt))
472 /* Now a top level so finish should succeed */
473 || !TEST_true(WPACKET_finish(&pkt))
474 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
475 || !TEST_mem_eq(buf->data, written, quic1, sizeof(quic1)))
476 return cleanup(&pkt);
477
478 /* QUIC sub-packet with 1-byte length prefix, containing a 1-byte vlint */
479 if (!TEST_true(WPACKET_init(&pkt, buf))
480 || !TEST_true(WPACKET_start_quic_sub_packet_bound(&pkt, OSSL_QUIC_VLINT_1B_MAX))
481 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x09))
482 || !TEST_false(WPACKET_finish(&pkt))
483 || !TEST_true(WPACKET_close(&pkt))
484 || !TEST_false(WPACKET_close(&pkt))
485 || !TEST_true(WPACKET_finish(&pkt))
486 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
487 || !TEST_mem_eq(buf->data, written, quic2, sizeof(quic2)))
488 return cleanup(&pkt);
489
490 /* QUIC sub-packet with 2-byte length prefix, containing a 2-byte vlint */
491 if (!TEST_true(WPACKET_init(&pkt, buf))
492 || !TEST_true(WPACKET_start_quic_sub_packet_bound(&pkt, OSSL_QUIC_VLINT_2B_MIN))
493 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x41))
494 || !TEST_false(WPACKET_finish(&pkt))
495 || !TEST_true(WPACKET_close(&pkt))
496 || !TEST_false(WPACKET_close(&pkt))
497 || !TEST_true(WPACKET_finish(&pkt))
498 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
499 || !TEST_mem_eq(buf->data, written, quic3, sizeof(quic3)))
500 return cleanup(&pkt);
501
502 /* QUIC sub-packet with 8-byte length prefix, containing a 4-byte vlint */
503 if (!TEST_true(WPACKET_init(&pkt, buf))
504 || !TEST_true(WPACKET_start_quic_sub_packet_bound(&pkt, OSSL_QUIC_VLINT_8B_MIN))
505 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x13c6a))
506 || !TEST_false(WPACKET_finish(&pkt))
507 || !TEST_true(WPACKET_close(&pkt))
508 || !TEST_false(WPACKET_close(&pkt))
509 || !TEST_true(WPACKET_finish(&pkt))
510 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
511 || !TEST_mem_eq(buf->data, written, quic4, sizeof(quic4)))
512 return cleanup(&pkt);
513
514 /* QUIC sub-packet with 8-byte length prefix, containing a 8-byte vlint */
515 if (!TEST_true(WPACKET_init(&pkt, buf))
516 || !TEST_true(WPACKET_start_quic_sub_packet_bound(&pkt, OSSL_QUIC_VLINT_8B_MIN))
517 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x2f77213f3f505ba5ULL))
518 || !TEST_false(WPACKET_finish(&pkt))
519 || !TEST_true(WPACKET_close(&pkt))
520 || !TEST_false(WPACKET_close(&pkt))
521 || !TEST_true(WPACKET_finish(&pkt))
522 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
523 || !TEST_mem_eq(buf->data, written, quic5, sizeof(quic5)))
524 return cleanup(&pkt);
525
526 /* QUIC sub-packet, length known up-front */
527 if (!TEST_true(WPACKET_init(&pkt, buf))
528 || !TEST_true(WPACKET_quic_sub_allocate_bytes(&pkt, 3, &bytes)))
529 return cleanup(&pkt);
530
531 bytes[0] = 0x55;
532 bytes[1] = 0x66;
533 bytes[2] = 0x77;
534
535 if (!TEST_true(WPACKET_finish(&pkt))
536 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
537 || !TEST_mem_eq(buf->data, written, quic6, sizeof(quic6)))
538 return cleanup(&pkt);
539
540 /* Nested and sequential sub-packets with length prefixes */
541 if (!TEST_true(WPACKET_init(&pkt, buf))
542 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x07))
543 || !TEST_true(WPACKET_get_length(&pkt, &len))
544 || !TEST_size_t_eq(len, 1)
545 || !TEST_true(WPACKET_start_quic_sub_packet_bound(&pkt, OSSL_QUIC_VLINT_4B_MIN))
546 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x2514))
547 || !TEST_true(WPACKET_get_length(&pkt, &len))
548 || !TEST_size_t_eq(len, 2)
549 || !TEST_true(WPACKET_start_quic_sub_packet_bound(&pkt, OSSL_QUIC_VLINT_2B_MIN))
550 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x05))
551 || !TEST_true(WPACKET_get_length(&pkt, &len))
552 || !TEST_size_t_eq(len, 1)
553 || !TEST_true(WPACKET_close(&pkt))
554 || !TEST_true(WPACKET_start_quic_sub_packet_bound(&pkt, OSSL_QUIC_VLINT_2B_MIN))
555 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x11))
556 || !TEST_true(WPACKET_close(&pkt))
557 || !TEST_true(WPACKET_get_length(&pkt, &len))
558 || !TEST_size_t_eq(len, 8)
559 || !TEST_true(WPACKET_close(&pkt))
560 || !TEST_true(WPACKET_start_quic_sub_packet_bound(&pkt, OSSL_QUIC_VLINT_2B_MIN))
561 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x12))
562 || !TEST_true(WPACKET_close(&pkt))
563 || !TEST_true(WPACKET_start_quic_sub_packet_bound(&pkt, OSSL_QUIC_VLINT_2B_MIN))
564 || !TEST_true(WPACKET_quic_write_vlint(&pkt, 0x13))
565 || !TEST_true(WPACKET_close(&pkt))
566 || !TEST_true(WPACKET_finish(&pkt))
567 || !TEST_true(WPACKET_get_total_written(&pkt, &written))
568 || !TEST_mem_eq(buf->data, written, quic7, sizeof(quic7)))
569 return cleanup(&pkt);
570
571 /* Trying to encode a value above OSSL_QUIC_VLINT_MAX should fail */
572 if (!TEST_true(WPACKET_init(&pkt, buf))
573 || !TEST_false(WPACKET_quic_write_vlint(&pkt, OSSL_QUIC_VLINT_MAX+1))
574 || !TEST_true(WPACKET_quic_write_vlint(&pkt, OSSL_QUIC_VLINT_MAX)))
575 return cleanup(&pkt);
576
577 WPACKET_cleanup(&pkt);
578 return 1;
579 }
580
test_WPACKET_quic_vlint_random(void)581 static int test_WPACKET_quic_vlint_random(void)
582 {
583 size_t i, written;
584 uint64_t expected, actual = 0;
585 unsigned char rand_data[9];
586 WPACKET pkt;
587 PACKET read_pkt = {0};
588
589 for (i = 0; i < 10000; ++i) {
590 if (!TEST_int_gt(RAND_bytes(rand_data, sizeof(rand_data)), 0))
591 return cleanup(&pkt);
592
593 expected = *(uint64_t*)rand_data;
594
595 /*
596 * Ensure that all size classes get tested with equal probability.
597 */
598 switch (rand_data[8] & 3) {
599 case 0:
600 expected &= OSSL_QUIC_VLINT_1B_MAX;
601 break;
602 case 1:
603 expected &= OSSL_QUIC_VLINT_2B_MAX;
604 break;
605 case 2:
606 expected &= OSSL_QUIC_VLINT_4B_MAX;
607 break;
608 case 3:
609 expected &= OSSL_QUIC_VLINT_8B_MAX;
610 break;
611 }
612
613 if (!TEST_true(WPACKET_init(&pkt, buf))
614 || !TEST_true(WPACKET_quic_write_vlint(&pkt, expected))
615 || !TEST_true(WPACKET_get_total_written(&pkt, &written)))
616 return cleanup(&pkt);
617
618 if (!TEST_true(PACKET_buf_init(&read_pkt, (unsigned char *)buf->data, written))
619 || !TEST_true(PACKET_get_quic_vlint(&read_pkt, &actual))
620 || !TEST_uint64_t_eq(expected, actual))
621 return cleanup(&pkt);
622
623 WPACKET_cleanup(&pkt);
624 }
625
626 WPACKET_cleanup(&pkt);
627 return 1;
628 }
629
630 #endif
631
setup_tests(void)632 int setup_tests(void)
633 {
634 if (!TEST_ptr(buf = BUF_MEM_new()))
635 return 0;
636
637 ADD_TEST(test_WPACKET_init);
638 ADD_TEST(test_WPACKET_set_max_size);
639 ADD_TEST(test_WPACKET_start_sub_packet);
640 ADD_TEST(test_WPACKET_set_flags);
641 ADD_TEST(test_WPACKET_allocate_bytes);
642 ADD_TEST(test_WPACKET_memcpy);
643 ADD_TEST(test_WPACKET_init_der);
644 #ifndef OPENSSL_NO_QUIC
645 ADD_TEST(test_WPACKET_quic);
646 ADD_TEST(test_WPACKET_quic_vlint_random);
647 #endif
648 return 1;
649 }
650
cleanup_tests(void)651 void cleanup_tests(void)
652 {
653 BUF_MEM_free(buf);
654 }
655
