tests/unit/test-base64.c

   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 }