xref: /qemu/tests/unit/test-base64.c (revision 7cebff0d)
1 /*
2  * QEMU base64 helper test
3  *
4  * Copyright (c) 2015 Red Hat, Inc.
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18  *
19  */
20 
21 #include "qemu/osdep.h"
22 
23 #include "qapi/error.h"
24 #include "qemu/base64.h"
25 
26 static void test_base64_good(void)
27 {
28     const char input[] =
29         "QmVjYXVzZSB3ZSBmb2N1c2VkIG9uIHRoZSBzbmFrZSwgd2UgbW\n"
30         "lzc2VkIHRoZSBzY29ycGlvbi4=";
31     const char expect[] = "Because we focused on the snake, "
32         "we missed the scorpion.";
33 
34     size_t len;
35     uint8_t *actual = qbase64_decode(input,
36                                      -1,
37                                      &len,
38                                      &error_abort);
39 
40     g_assert(actual != NULL);
41     g_assert_cmpint(len, ==, strlen(expect));
42     g_assert_cmpstr((char *)actual, ==, expect);
43     g_free(actual);
44 }
45 
46 
47 static void test_base64_bad(const char *input,
48                             size_t input_len)
49 {
50     size_t len;
51     Error *err = NULL;
52     uint8_t *actual = qbase64_decode(input,
53                                      input_len,
54                                      &len,
55                                      &err);
56 
57     error_free_or_abort(&err);
58     g_assert(actual == NULL);
59     g_assert_cmpint(len, ==, 0);
60 }
61 
62 
63 static void test_base64_embedded_nul(void)
64 {
65     /* We put a NUL character in the middle of the base64
66      * text which is invalid data, given the expected length */
67     const char input[] =
68         "QmVjYXVzZSB3ZSBmb2N1c2VkIG9uIHRoZSBzbmFrZSwgd2UgbW\0"
69         "lzc2VkIHRoZSBzY29ycGlvbi4=";
70 
71     test_base64_bad(input, G_N_ELEMENTS(input) - 1);
72 }
73 
74 
75 static void test_base64_not_nul_terminated(void)
76 {
77     const char input[] =
78         "QmVjYXVzZSB3ZSBmb2N1c2VkIG9uIHRoZSBzbmFrZSwgd2UgbW\n"
79         "lzc2VkIHRoZSBzY29ycGlvbi4=";
80 
81     /* Using '-2' to make us drop the trailing NUL, thus
82      * creating an invalid base64 sequence for decoding */
83     test_base64_bad(input, G_N_ELEMENTS(input) - 2);
84 }
85 
86 
87 static void test_base64_invalid_chars(void)
88 {
89     /* We put a single quote character in the middle
90      * of the base64 text which is invalid data */
91     const char input[] =
92         "QmVjYXVzZSB3ZSBmb2N1c2VkIG9uIHRoZSBzbmFrZSwgd2UgbW'"
93         "lzc2VkIHRoZSBzY29ycGlvbi4=";
94 
95     test_base64_bad(input, strlen(input));
96 }
97 
98 
99 int main(int argc, char **argv)
100 {
101     g_test_init(&argc, &argv, NULL);
102     g_test_add_func("/util/base64/good", test_base64_good);
103     g_test_add_func("/util/base64/embedded-nul", test_base64_embedded_nul);
104     g_test_add_func("/util/base64/not-nul-terminated",
105                     test_base64_not_nul_terminated);
106     g_test_add_func("/util/base64/invalid-chars", test_base64_invalid_chars);
107     return g_test_run();
108 }
109