gio/tests/thumbnail-verification.c

   1 /* GLib testing framework examples and tests
   2  *
   3  * Copyright (C) 2013 Collabora, Ltd.
   4  *
   5  * This work is provided "as is"; redistribution and modification
   6  * in whole or in part, in any medium, physical or electronic is
   7  * permitted without restriction.
   8  *
   9  * This work 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.
  12  *
  13  * In no event shall the authors or contributors be liable for any
  14  * direct, indirect, incidental, special, exemplary, or consequential
  15  * damages (including, but not limited to, procurement of substitute
  16  * goods or services; loss of use, data, or profits; or business
  17  * interruption) however caused and on any theory of liability, whether
  18  * in contract, strict liability, or tort (including negligence or
  19  * otherwise) arising in any way out of the use of this software, even
  20  * if advised of the possibility of such damage.
  21  *
  22  * Author: Philip Withnall <philip.withnall@collabora.co.uk>
  23  */
  24
  25 #define GIO_COMPILATION 1
  26 #include "../thumbnail-verify.c"
  27
  28 static void
  29 test_validity (void)
  30 {
  31   struct
  32     {
  33       const gchar *filename;  /* name of a file in the tests/thumbnails dir */
  34       guint64 mtime;  /* asserted mtime of @filename */
  35       guint64 size;  /* asserted size of @filename */
  36       gboolean expected_validity;  /* should thumbnail_verify() succeed? */
  37     }
  38   tests[] =
  39     {
  40       /*
  41        * Tests with well-formed PNG files.
  42        *
  43        * Note that these files have all been brutally truncated to a reasonable
  44        * size, so aren't actually valid PNG files. Their headers are valid,
  45        * however, and that's all we care about.
  46        */
  47
  48       /* Test that validation succeeds against a valid PNG file with URI,
  49        * mtime and size which match the expected values. */
  50       { "valid.png", 1382429848, 93654, TRUE },
  51       /* Test that validation succeeds with URI and mtime, but no size in the
  52        * tEXt data. */
  53       { "valid-no-size.png", 1382429848, 93633, TRUE },
  54       /* Test that a missing file fails validation. */
  55       { "missing.png", 123456789, 12345, FALSE },
  56       /* Test that an existing file with no tEXt data fails validation. */
  57       { "no-text-data.png", 123 /* invalid */, 26378, FALSE },
  58       /* Test that a URI mismatch fails validation. */
  59       { "uri-mismatch.png" /* invalid */, 1382429848, 93654, FALSE },
  60       /* Test that an mtime mismatch fails validation. */
  61       { "valid.png", 123 /* invalid */, 93654, FALSE },
  62       /* Test that a valid URI and mtime, but a mismatched size, fails
  63        * validation. */
  64       { "valid.png", 1382429848, 123 /* invalid */, FALSE },
  65       /* Test that validation succeeds with an mtime of 0. */
  66       { "mtime-zero.png", 0, 93621, TRUE },
  67       /* Test that validation fails if the mtime is only a prefix match. */
  68       { "valid.png", 9848 /* invalid */, 93654, FALSE },
  69
  70       /*
  71        * Tests with PNG files which have malicious or badly-formed headers.
  72        *
  73        * As above, the files have all been truncated to reduce their size.
  74        */
  75
  76       /* Check a corrupted PNG header fails validation. */
  77       { "bad-header.png", 1382429848, 93654, FALSE },
  78       /* Check a PNG header by itself fails. */
  79       { "header-only.png", 1382429848, 8, FALSE },
  80       /* Check a PNG header and initial chunk size fails. */
  81       { "header-and-chunk-size.png", 1382429848, 20, FALSE },
  82       /* Check a huge chunk size fails. */
  83       { "huge-chunk-size.png", 1382429848, 93654, FALSE },
  84       /* Check that an empty key fails. */
  85       { "empty-key.png", 1382429848, 93654, FALSE },
  86       /* Check that an over-long value fails (even if nul-terminated). */
  87       { "overlong-value.png", 1382429848, 93660, FALSE },
  88     };
  89   guint i;
  90
  91   /* Run all the tests. */
  92   for (i = 0; i < G_N_ELEMENTS (tests); i++)
  93     {
  94       GLocalFileStat stat_buf;
  95       const gchar *thumbnail_path;
  96       gchar *file_uri;
  97       gboolean result;
  98
  99       thumbnail_path = g_test_get_filename (G_TEST_DIST, "thumbnails",
 100                                             tests[i].filename, NULL);
 101       file_uri = g_strconcat ("file:///tmp/", tests[i].filename, NULL);
 102       stat_buf.st_mtime = tests[i].mtime;
 103       stat_buf.st_size = tests[i].size;
 104
 105       result = thumbnail_verify (thumbnail_path, file_uri, &stat_buf);
 106
 107       g_free (file_uri);
 108
 109       g_assert (result == tests[i].expected_validity);
 110     }
 111 }
 112
 113 int
 114 main (int   argc,
 115       char *argv[])
 116 {
 117   g_test_init (&argc, &argv, NULL);
 118
 119   g_test_add_func ("/png-thumbs/validity", test_validity);
 120
 121   return g_test_run ();
 122 }