1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
|
/*
* Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <string.h>
#include <openssl/buffer.h>
#include "internal/packet.h"
#include "testutil.h"
static const unsigned char simple1[] = { 0xff };
static const unsigned char simple2[] = { 0x01, 0xff };
static const unsigned char simple3[] = { 0x00, 0x00, 0x00, 0x01, 0xff };
static const unsigned char nestedsub[] = { 0x03, 0xff, 0x01, 0xff };
static const unsigned char seqsub[] = { 0x01, 0xff, 0x01, 0xff };
static const unsigned char empty[] = { 0x00 };
static const unsigned char alloc[] = { 0x02, 0xfe, 0xff };
static const unsigned char submem[] = { 0x03, 0x02, 0xfe, 0xff };
static const unsigned char fixed[] = { 0xff, 0xff, 0xff };
static BUF_MEM *buf;
static int cleanup(WPACKET *pkt)
{
WPACKET_cleanup(pkt);
return 0;
}
static int test_WPACKET_init(void)
{
WPACKET pkt;
int i;
size_t written;
unsigned char sbuf[3];
if (!TEST_true(WPACKET_init(&pkt, buf))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
/* Closing a top level WPACKET should fail */
|| !TEST_false(WPACKET_close(&pkt))
/* Finishing a top level WPACKET should succeed */
|| !TEST_true(WPACKET_finish(&pkt))
/*
* Can't call close or finish on a WPACKET that's already
* finished.
*/
|| !TEST_false(WPACKET_close(&pkt))
|| !TEST_false(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, simple1, sizeof(simple1)))
return cleanup(&pkt);
/* Now try with a one byte length prefix */
if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, simple2, sizeof(simple2)))
return cleanup(&pkt);
/* And a longer length prefix */
if (!TEST_true(WPACKET_init_len(&pkt, buf, 4))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, simple3, sizeof(simple3)))
return cleanup(&pkt);
if (!TEST_true(WPACKET_init_len(&pkt, buf, 1)))
return cleanup(&pkt);
for (i = 1; i < 257; i++) {
/*
* Putting more bytes in than fit for the size of the length prefix
* should fail
*/
if (!TEST_int_eq(WPACKET_put_bytes_u8(&pkt, 0xff), i < 256))
return cleanup(&pkt);
}
if (!TEST_true(WPACKET_finish(&pkt)))
return cleanup(&pkt);
/* Test initialising from a fixed size buffer */
if (!TEST_true(WPACKET_init_static_len(&pkt, sbuf, sizeof(sbuf), 0))
/* Adding 3 bytes should succeed */
|| !TEST_true(WPACKET_put_bytes_u24(&pkt, 0xffffff))
/* Adding 1 more byte should fail */
|| !TEST_false(WPACKET_put_bytes_u8(&pkt, 0xff))
/* Finishing the top level WPACKET should succeed */
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(sbuf, written, fixed, sizeof(sbuf))
/* Initialise with 1 len byte */
|| !TEST_true(WPACKET_init_static_len(&pkt, sbuf, sizeof(sbuf), 1))
/* Adding 2 bytes should succeed */
|| !TEST_true(WPACKET_put_bytes_u16(&pkt, 0xfeff))
/* Adding 1 more byte should fail */
|| !TEST_false(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(sbuf, written, alloc, sizeof(alloc)))
return cleanup(&pkt);
return 1;
}
static int test_WPACKET_set_max_size(void)
{
WPACKET pkt;
size_t written;
if (!TEST_true(WPACKET_init(&pkt, buf))
/*
* No previous lenbytes set so we should be ok to set the max
* possible max size
*/
|| !TEST_true(WPACKET_set_max_size(&pkt, SIZE_MAX))
/* We should be able to set it smaller too */
|| !TEST_true(WPACKET_set_max_size(&pkt, SIZE_MAX -1))
/* And setting it bigger again should be ok */
|| !TEST_true(WPACKET_set_max_size(&pkt, SIZE_MAX))
|| !TEST_true(WPACKET_finish(&pkt)))
return cleanup(&pkt);
if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
/*
* Should fail because we already consumed 1 byte with the
* length
*/
|| !TEST_false(WPACKET_set_max_size(&pkt, 0))
/*
* Max size can't be bigger than biggest that will fit in
* lenbytes
*/
|| !TEST_false(WPACKET_set_max_size(&pkt, 0x0101))
/* It can be the same as the maximum possible size */
|| !TEST_true(WPACKET_set_max_size(&pkt, 0x0100))
/* Or it can be less */
|| !TEST_true(WPACKET_set_max_size(&pkt, 0x01))
/* Should fail because packet is already filled */
|| !TEST_false(WPACKET_put_bytes_u8(&pkt, 0xff))
/* You can't put in more bytes than max size */
|| !TEST_true(WPACKET_set_max_size(&pkt, 0x02))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_false(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, simple2, sizeof(simple2)))
return cleanup(&pkt);
return 1;
}
static int test_WPACKET_start_sub_packet(void)
{
WPACKET pkt;
size_t written;
size_t len;
if (!TEST_true(WPACKET_init(&pkt, buf))
|| !TEST_true(WPACKET_start_sub_packet(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
/* Can't finish because we have a sub packet */
|| !TEST_false(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_close(&pkt))
/* Sub packet is closed so can't close again */
|| !TEST_false(WPACKET_close(&pkt))
/* Now a top level so finish should succeed */
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, simple1, sizeof(simple1)))
return cleanup(&pkt);
/* Single sub-packet with length prefix */
if (!TEST_true(WPACKET_init(&pkt, buf))
|| !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, simple2, sizeof(simple2)))
return cleanup(&pkt);
/* Nested sub-packets with length prefixes */
if (!TEST_true(WPACKET_init(&pkt, buf))
|| !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_get_length(&pkt, &len))
|| !TEST_size_t_eq(len, 1)
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_get_length(&pkt, &len))
|| !TEST_size_t_eq(len, 3)
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, nestedsub, sizeof(nestedsub)))
return cleanup(&pkt);
/* Sequential sub-packets with length prefixes */
if (!TEST_true(WPACKET_init(&pkt, buf))
|| !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, seqsub, sizeof(seqsub)))
return cleanup(&pkt);
/* Nested sub-packets with lengths filled before finish */
if (!TEST_true(WPACKET_init(&pkt, buf))
|| !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_get_length(&pkt, &len))
|| !TEST_size_t_eq(len, 1)
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_get_length(&pkt, &len))
|| !TEST_size_t_eq(len, 3)
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_fill_lengths(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, nestedsub, sizeof(nestedsub))
|| !TEST_true(WPACKET_finish(&pkt)))
return cleanup(&pkt);
return 1;
}
static int test_WPACKET_set_flags(void)
{
WPACKET pkt;
size_t written;
/* Set packet to be non-zero length */
if (!TEST_true(WPACKET_init(&pkt, buf))
|| !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_NON_ZERO_LENGTH))
/* Should fail because of zero length */
|| !TEST_false(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, simple1, sizeof(simple1)))
return cleanup(&pkt);
/* Repeat above test in a sub-packet */
if (!TEST_true(WPACKET_init(&pkt, buf))
|| !TEST_true(WPACKET_start_sub_packet(&pkt))
|| !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_NON_ZERO_LENGTH))
/* Should fail because of zero length */
|| !TEST_false(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, simple1, sizeof(simple1)))
return cleanup(&pkt);
/* Set packet to abandon non-zero length */
if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
|| !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_size_t_eq(written, 0))
return cleanup(&pkt);
/* Repeat above test but only abandon a sub-packet */
if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
|| !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
|| !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH))
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, empty, sizeof(empty)))
return cleanup(&pkt);
/* And repeat with a non empty sub-packet */
if (!TEST_true(WPACKET_init(&pkt, buf))
|| !TEST_true(WPACKET_start_sub_packet_u8(&pkt))
|| !TEST_true(WPACKET_set_flags(&pkt, WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH))
|| !TEST_true(WPACKET_put_bytes_u8(&pkt, 0xff))
|| !TEST_true(WPACKET_close(&pkt))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, simple2, sizeof(simple2)))
return cleanup(&pkt);
return 1;
}
static int test_WPACKET_allocate_bytes(void)
{
WPACKET pkt;
size_t written;
unsigned char *bytes;
if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
|| !TEST_true(WPACKET_allocate_bytes(&pkt, 2, &bytes)))
return cleanup(&pkt);
bytes[0] = 0xfe;
bytes[1] = 0xff;
if (!TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, alloc, sizeof(alloc)))
return cleanup(&pkt);
/* Repeat with WPACKET_sub_allocate_bytes */
if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
|| !TEST_true(WPACKET_sub_allocate_bytes_u8(&pkt, 2, &bytes)))
return cleanup(&pkt);
bytes[0] = 0xfe;
bytes[1] = 0xff;
if (!TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, submem, sizeof(submem)))
return cleanup(&pkt);
return 1;
}
static int test_WPACKET_memcpy(void)
{
WPACKET pkt;
size_t written;
const unsigned char bytes[] = { 0xfe, 0xff };
if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
|| !TEST_true(WPACKET_memcpy(&pkt, bytes, sizeof(bytes)))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, alloc, sizeof(alloc)))
return cleanup(&pkt);
/* Repeat with WPACKET_sub_memcpy() */
if (!TEST_true(WPACKET_init_len(&pkt, buf, 1))
|| !TEST_true(WPACKET_sub_memcpy_u8(&pkt, bytes, sizeof(bytes)))
|| !TEST_true(WPACKET_finish(&pkt))
|| !TEST_true(WPACKET_get_total_written(&pkt, &written))
|| !TEST_mem_eq(buf->data, written, submem, sizeof(submem)))
return cleanup(&pkt);
return 1;
}
int setup_tests(void)
{
if (!TEST_ptr(buf = BUF_MEM_new()))
return 0;
ADD_TEST(test_WPACKET_init);
ADD_TEST(test_WPACKET_set_max_size);
ADD_TEST(test_WPACKET_start_sub_packet);
ADD_TEST(test_WPACKET_set_flags);
ADD_TEST(test_WPACKET_allocate_bytes);
ADD_TEST(test_WPACKET_memcpy);
return 1;
}
void cleanup_tests(void)
{
BUF_MEM_free(buf);
}
|
