1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "libavutil/encryption_info.h"
20
21 #include <stdio.h>
22 #include <string.h>
23
24 #include "libavutil/avassert.h"
25
26 static const AVSubsampleEncryptionInfo test_subsamples[] = {{1, 2}, {3, 4}, {5, 6}, {7, 8}};
27 static const size_t test_subsample_count = sizeof(test_subsamples) / sizeof(test_subsamples[0]);
28 static const uint8_t test_iv[] = {0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18};
29 static const uint8_t test_key_id[] = {0x21, 0x22, 0x23, 0x24};
30 static const uint8_t test_key_id_2[] = {0x31, 0x32, 0x33, 0x34};
31 static const uint8_t test_system_id[] = {0x41, 0x42, 0x43};
32 static const uint8_t test_data[] = {0x51, 0x52};
33
compare_encryption_info(const AVEncryptionInfo * a,const AVEncryptionInfo * b)34 static int compare_encryption_info(const AVEncryptionInfo *a, const AVEncryptionInfo *b) {
35 if (!a || !b || a->scheme != b->scheme || a->crypt_byte_block != b->crypt_byte_block ||
36 a->skip_byte_block != b->skip_byte_block || a->key_id_size != b->key_id_size ||
37 a->iv_size != b->iv_size || a->subsample_count != b->subsample_count)
38 return 1;
39
40 if (memcmp(a->key_id, b->key_id, a->key_id_size) != 0 ||
41 memcmp(a->iv, b->iv, a->iv_size) != 0 ||
42 memcmp(a->subsamples, b->subsamples, a->subsample_count * sizeof(a->subsamples[0])))
43 return 1;
44
45 return 0;
46 }
47
compare_encryption_init_info(const AVEncryptionInitInfo * a,const AVEncryptionInitInfo * b)48 static int compare_encryption_init_info(const AVEncryptionInitInfo *a, const AVEncryptionInitInfo *b) {
49 if (!a || !b || a->system_id_size != b->system_id_size ||
50 a->num_key_ids != b->num_key_ids || a->key_id_size != b->key_id_size ||
51 a->data_size != b->data_size)
52 return 1;
53
54 if (memcmp(a->system_id, b->system_id, a->system_id_size) != 0 ||
55 memcmp(a->data, b->data, a->data_size) != 0)
56 return 1;
57
58 for (uint32_t i = 0; i < a->num_key_ids; i++) {
59 if (memcmp(a->key_ids[i], b->key_ids[i], a->key_id_size) != 0)
60 return 1;
61 }
62
63 if (a->next || b->next) {
64 if (!a->next || !b->next)
65 return 1;
66 if (compare_encryption_init_info(a->next, b->next) != 0)
67 return 1;
68 }
69
70 return 0;
71 }
72
run_encryption_info_test(void)73 static void run_encryption_info_test(void)
74 {
75 AVEncryptionInfo *info, *copy;
76 uint8_t *side_data;
77 size_t side_data_size;
78
79 info = av_encryption_info_alloc(test_subsample_count, sizeof(test_key_id), sizeof(test_iv));
80 av_assert0(info);
81 av_assert0(info->key_id);
82 av_assert0(info->key_id_size == sizeof(test_key_id));
83 av_assert0(info->iv);
84 av_assert0(info->iv_size == sizeof(test_iv));
85 av_assert0(info->subsamples);
86 av_assert0(info->subsample_count == test_subsample_count);
87
88 info->scheme = 1234;
89 info->crypt_byte_block = 333;
90 info->skip_byte_block = 444;
91 memcpy(info->key_id, test_key_id, sizeof(test_key_id));
92 memcpy(info->iv, test_iv, sizeof(test_iv));
93 memcpy(info->subsamples, test_subsamples, sizeof(test_subsamples));
94
95 copy = av_encryption_info_clone(info);
96 av_assert0(copy);
97 av_assert0(copy != info);
98 av_assert0(compare_encryption_info(info, copy) == 0);
99 av_encryption_info_free(copy);
100
101 side_data = av_encryption_info_add_side_data(info, &side_data_size);
102 av_assert0(side_data);
103 av_assert0(side_data_size > 0);
104
105 copy = av_encryption_info_get_side_data(side_data, side_data_size);
106 av_assert0(copy);
107 av_assert0(copy != info);
108 av_assert0(compare_encryption_info(info, copy) == 0);
109 av_encryption_info_free(copy);
110 av_free(side_data);
111
112 av_encryption_info_free(info);
113 }
114
create_init_info(void)115 static AVEncryptionInitInfo *create_init_info(void)
116 {
117 AVEncryptionInitInfo *info;
118
119 info = av_encryption_init_info_alloc(sizeof(test_system_id), 2, sizeof(test_key_id), sizeof(test_data));
120 av_assert0(info);
121 av_assert0(info->system_id);
122 av_assert0(info->system_id_size == sizeof(test_system_id));
123 av_assert0(info->key_ids);
124 av_assert0(info->num_key_ids == 2);
125 av_assert0(info->key_id_size == sizeof(test_key_id));
126 av_assert0(info->key_ids[0]);
127 av_assert0(info->key_ids[1]);
128 av_assert0(info->data);
129 av_assert0(info->data_size == sizeof(test_data));
130 av_assert0(!info->next);
131
132 memcpy(info->system_id, test_system_id, sizeof(test_system_id));
133 memcpy(info->key_ids[0], test_key_id, sizeof(test_key_id));
134 memcpy(info->key_ids[1], test_key_id_2, sizeof(test_key_id_2));
135 memcpy(info->data, test_data, sizeof(test_data));
136
137 return info;
138 }
139
run_encryption_init_info_test(void)140 static void run_encryption_init_info_test(void)
141 {
142 AVEncryptionInitInfo *info, *copy;
143 uint8_t *side_data;
144 size_t side_data_size;
145
146 info = create_init_info();
147
148 side_data = av_encryption_init_info_add_side_data(info, &side_data_size);
149 av_assert0(side_data);
150 av_assert0(side_data_size > 0);
151 copy = av_encryption_init_info_get_side_data(side_data, side_data_size);
152 av_assert0(copy);
153 av_assert0(compare_encryption_init_info(info, copy) == 0);
154 av_encryption_init_info_free(copy);
155 av_free(side_data);
156
157 // Make the first init info different from the second to test the correct order.
158 memset(info->system_id, 0, info->system_id_size);
159 info->next = create_init_info();
160 side_data = av_encryption_init_info_add_side_data(info, &side_data_size);
161 av_assert0(side_data);
162 copy = av_encryption_init_info_get_side_data(side_data, side_data_size);
163 av_assert0(copy);
164 av_assert0(compare_encryption_init_info(info, copy) == 0);
165 av_encryption_init_info_free(copy);
166 av_free(side_data);
167
168 av_encryption_init_info_free(info);
169 }
170
main(int argc,char ** argv)171 int main(int argc, char **argv)
172 {
173 run_encryption_info_test();
174 run_encryption_init_info_test();
175 return 0;
176 }
177