glib/gio/tests/contenttype.c

#include <gio/gio.h>
#include <string.h>

#define g_assert_content_type_equals(s1, s2) 			\
  do { 								\
    const char *__s1 = (s1), *__s2 = (s2); 			\
    if (g_content_type_equals (__s1, __s2)) ;		 	\
    else 							\
      g_assertion_message_cmpstr (G_LOG_DOMAIN, 		\
                                  __FILE__, __LINE__, 		\
                                  G_STRFUNC, 			\
                                  #s1 " == " #s2, 		\
                                  __s1, " == ", __s2); 		\
  } while (0)

static gboolean
skip_missing_shared_mime_info (void)
{
  gchar *path = g_find_program_in_path ("update-mime-database");

  if (path == NULL)
    {
      g_test_skip ("shared-mime-info is required to run this test");
      return TRUE;
    }
  g_free (path);
  return FALSE;
}

static void
test_guess (void)
{
  gchar *res;
  gchar *expected;
  gchar *existing_directory;
  gboolean uncertain;
  guchar data[] =
    "[Desktop Entry]\n"
    "Type=Application\n"
    "Name=appinfo-test\n"
    "Exec=./appinfo-test --option\n";

  if (skip_missing_shared_mime_info ())
    return;

#ifdef G_OS_WIN32
  existing_directory = (gchar *) g_getenv ("SYSTEMROOT");

  if (existing_directory)
    existing_directory = g_strdup_printf ("%s" G_DIR_SEPARATOR_S, existing_directory);
#else
  existing_directory = g_strdup ("/etc/");
#endif

  res = g_content_type_guess (existing_directory, NULL, 0, &uncertain);
  g_free (existing_directory);
  expected = g_content_type_from_mime_type ("inode/directory");
  g_assert_content_type_equals (expected, res);
  g_assert_true (uncertain);
  g_free (res);
  g_free (expected);

  res = g_content_type_guess ("foo.txt", NULL, 0, &uncertain);
  expected = g_content_type_from_mime_type ("text/plain");
  g_assert_content_type_equals (expected, res);
  g_free (res);
  g_free (expected);

  res = g_content_type_guess ("foo.txt", data, sizeof (data) - 1, &uncertain);
  expected = g_content_type_from_mime_type ("text/plain");
  g_assert_content_type_equals (expected, res);
  g_assert_false (uncertain);
  g_free (res);
  g_free (expected);

  /* Sadly win32 & OSX just don't have as large and robust of a mime type database as Linux */
#ifndef G_OS_WIN32
#ifndef __APPLE__
  res = g_content_type_guess ("foo", data, sizeof (data) - 1, &uncertain);
  expected = g_content_type_from_mime_type ("text/plain");
  g_assert_content_type_equals (expected, res);
  g_assert_false (uncertain);
  g_free (res);
  g_free (expected);

  res = g_content_type_guess ("foo.desktop", data, sizeof (data) - 1, &uncertain);
  expected = g_content_type_from_mime_type ("application/x-desktop");
  g_assert_content_type_equals (expected, res);
  g_assert_false (uncertain);
  g_free (res);
  g_free (expected);

  res = g_content_type_guess (NULL, data, sizeof (data) - 1, &uncertain);
  expected = g_content_type_from_mime_type ("application/x-desktop");
  g_assert_content_type_equals (expected, res);
  g_assert_false (uncertain);
  g_free (res);
  g_free (expected);

  /* this is potentially ambiguous: it does not match the PO template format,
   * but looks like text so it can't be Powerpoint */
  res = g_content_type_guess ("test.pot", (guchar *)"ABC abc", 7, &uncertain);
  expected = g_content_type_from_mime_type ("text/x-gettext-translation-template");
  g_assert_content_type_equals (expected, res);
  g_assert_false (uncertain);
  g_free (res);
  g_free (expected);

  res = g_content_type_guess ("test.pot", (guchar *)"msgid \"", 7, &uncertain);
  expected = g_content_type_from_mime_type ("text/x-gettext-translation-template");
  g_assert_content_type_equals (expected, res);
  g_assert_false (uncertain);
  g_free (res);
  g_free (expected);

  res = g_content_type_guess ("test.pot", (guchar *)"\xCF\xD0\xE0\x11", 4, &uncertain);
  expected = g_content_type_from_mime_type ("application/vnd.ms-powerpoint");
  g_assert_content_type_equals (expected, res);
  /* we cannot reliably detect binary powerpoint files as long as there is no
   * defined MIME magic, so do not check uncertain here
   */
  g_free (res);
  g_free (expected);

  res = g_content_type_guess ("test.otf", (guchar *)"OTTO", 4, &uncertain);
  expected = g_content_type_from_mime_type ("application/x-font-otf");
  g_assert_content_type_equals (expected, res);
  g_assert_false (uncertain);
  g_free (res);
  g_free (expected);
#endif /* __APPLE__ */

  res = g_content_type_guess (NULL, (guchar *)"%!PS-Adobe-2.0 EPSF-1.2", 23, &uncertain);
  expected = g_content_type_from_mime_type ("image/x-eps");
  g_assert_content_type_equals (expected, res);
  g_assert_false (uncertain);
  g_free (res);
  g_free (expected);

  /* The data below would be detected as a valid content type, but shouldn’t be read at all. */
  res = g_content_type_guess (NULL, (guchar *)"%!PS-Adobe-2.0 EPSF-1.2", 0, &uncertain);
  expected = g_content_type_from_mime_type ("application/x-zerosize");
  g_assert_content_type_equals (expected, res);
  g_assert_false (uncertain);
  g_free (res);
  g_free (expected);
#endif /* G_OS_WIN32 */
}

static void
test_unknown (void)
{
  gchar *unknown;
  gchar *str;

  unknown = g_content_type_from_mime_type ("application/octet-stream");
  g_assert_true (g_content_type_is_unknown (unknown));
  str = g_content_type_get_mime_type (unknown);
  g_assert_cmpstr (str, ==, "application/octet-stream");
  g_free (str);
  g_free (unknown);
}

static void
test_subtype (void)
{
  gchar *plain;
  gchar *xml;

  if (skip_missing_shared_mime_info ())
    return;

  plain = g_content_type_from_mime_type ("text/plain");
  xml = g_content_type_from_mime_type ("application/xml");

  g_assert_true (g_content_type_is_a (xml, plain));
  g_assert_true (g_content_type_is_mime_type (xml, "text/plain"));

  g_free (plain);
  g_free (xml);
}

static gint
find_mime (gconstpointer a, gconstpointer b)
{
  if (g_content_type_equals (a, b))
    return 0;
  return 1;
}

static void
test_list (void)
{
  GList *types;
  gchar *plain;
  gchar *xml;

  if (skip_missing_shared_mime_info ())
    return;

#ifdef __APPLE__
  g_test_skip ("The OSX backend does not implement g_content_types_get_registered()");
  return;
#endif

  plain = g_content_type_from_mime_type ("text/plain");
  xml = g_content_type_from_mime_type ("application/xml");

  types = g_content_types_get_registered ();

  g_assert_cmpuint (g_list_length (types), >, 1);

  /* just check that some types are in the list */
  g_assert_nonnull (g_list_find_custom (types, plain, find_mime));
  g_assert_nonnull (g_list_find_custom (types, xml, find_mime));

  g_list_free_full (types, g_free);

  g_free (plain);
  g_free (xml);
}

static void
test_executable (void)
{
  gchar *type;

  if (skip_missing_shared_mime_info ())
    return;

#ifdef G_OS_WIN32
  type = g_content_type_from_mime_type ("application/vnd.microsoft.portable-executable");
  /* FIXME: the MIME is not in the default `MIME\Database\Content Type` registry.
   * g_assert_true (g_content_type_can_be_executable (type));
   */
  g_free (type);
#else
  type = g_content_type_from_mime_type ("application/x-executable");
  g_assert_true (g_content_type_can_be_executable (type));
  g_free (type);

  type = g_content_type_from_mime_type ("text/plain");
  g_assert_true (g_content_type_can_be_executable (type));
  g_free (type);
#endif
  type = g_content_type_from_mime_type ("image/png");
  g_assert_false (g_content_type_can_be_executable (type));
  g_free (type);
}

static void
test_description (void)
{
  gchar *type;
  gchar *desc;

  if (skip_missing_shared_mime_info ())
    return;

  type = g_content_type_from_mime_type ("text/plain");
  desc = g_content_type_get_description (type);
  g_assert_nonnull (desc);

  g_free (desc);
  g_free (type);
}

static void
test_icon (void)
{
  gchar *type;
  GIcon *icon;

  if (skip_missing_shared_mime_info ())
    return;

  type = g_content_type_from_mime_type ("text/plain");
  icon = g_content_type_get_icon (type);
  g_assert_true (G_IS_ICON (icon));
  if (G_IS_THEMED_ICON (icon))
    {
      const gchar *const *names;

      names = g_themed_icon_get_names (G_THEMED_ICON (icon));
#ifdef __APPLE__
      g_assert_true (g_strv_contains (names, "text-*"));
#elif defined(G_OS_WIN32)
      g_assert_cmpuint (g_strv_length ((GStrv) names), >, 0);
#else
      g_assert_true (g_strv_contains (names, "text-plain"));
      g_assert_true (g_strv_contains (names, "text-x-generic"));
#endif
    }
  g_object_unref (icon);
  g_free (type);

  type = g_content_type_from_mime_type ("application/rtf");
  icon = g_content_type_get_icon (type);
  g_assert_true (G_IS_ICON (icon));
  if (G_IS_THEMED_ICON (icon))
    {
      const gchar *const *names;

      names = g_themed_icon_get_names (G_THEMED_ICON (icon));
#ifdef G_OS_WIN32
      g_assert_true (g_strv_contains (names, "text-x-generic"));
#else
      g_assert_true (g_strv_contains (names, "application-rtf"));
#ifndef __APPLE__
      g_assert_true (g_strv_contains (names, "x-office-document"));
#endif
#endif
    }
  g_object_unref (icon);
  g_free (type);
}

static void
test_symbolic_icon (void)
{
#ifndef G_OS_WIN32
  gchar *type;
  GIcon *icon;

  if (skip_missing_shared_mime_info ())
    return;

  type = g_content_type_from_mime_type ("text/plain");
  icon = g_content_type_get_symbolic_icon (type);
  g_assert_true (G_IS_ICON (icon));
  if (G_IS_THEMED_ICON (icon))
    {
      const gchar *const *names;

      names = g_themed_icon_get_names (G_THEMED_ICON (icon));
#ifdef __APPLE__
      g_assert_true (g_strv_contains (names, "text-*-symbolic"));
      g_assert_true (g_strv_contains (names, "text-*"));
#else
      g_assert_true (g_strv_contains (names, "text-plain-symbolic"));
      g_assert_true (g_strv_contains (names, "text-x-generic-symbolic"));
      g_assert_true (g_strv_contains (names, "text-plain"));
      g_assert_true (g_strv_contains (names, "text-x-generic"));
#endif
    }
  g_object_unref (icon);
  g_free (type);

  type = g_content_type_from_mime_type ("application/rtf");
  icon = g_content_type_get_symbolic_icon (type);
  g_assert_true (G_IS_ICON (icon));
  if (G_IS_THEMED_ICON (icon))
    {
      const gchar *const *names;

      names = g_themed_icon_get_names (G_THEMED_ICON (icon));
      g_assert_true (g_strv_contains (names, "application-rtf-symbolic"));
      g_assert_true (g_strv_contains (names, "application-rtf"));
#ifndef __APPLE__
      g_assert_true (g_strv_contains (names, "x-office-document-symbolic"));
      g_assert_true (g_strv_contains (names, "x-office-document"));
#endif
    }
  g_object_unref (icon);
  g_free (type);
#endif
}

static void
test_tree (void)
{
  const gchar *tests[] = {
    "x-content/image-dcf",
    "x-content/unix-software",
    "x-content/win32-software"
  };
  const gchar *path;
  GFile *file;
  gchar **types;
  gsize i;

  if (skip_missing_shared_mime_info ())
    return;

#if defined(__APPLE__) || defined(G_OS_WIN32)
  g_test_skip ("The OSX & Windows backends do not implement g_content_type_guess_for_tree()");
  return;
#endif

  for (i = 0; i < G_N_ELEMENTS (tests); i++)
    {
      path = g_test_get_filename (G_TEST_DIST, tests[i], NULL);
      file = g_file_new_for_path (path);
      types = g_content_type_guess_for_tree (file);
      g_assert_content_type_equals (types[0], tests[i]);
      g_strfreev (types);
      g_object_unref (file);
   }
}

static void
test_tree_invalid_encoding (void)
{
  gchar *path;
  gchar *name;
  GFile *tmpdir;
  GFile *file;
  gchar **types;
  GError *error = NULL;

  g_test_bug ("https://gitlab.gnome.org/GNOME/glib/-/issues/3168");

#if defined(__APPLE__) || defined(G_OS_WIN32)
  g_test_skip ("The OSX & Windows backends do not implement g_content_type_guess_for_tree()");
  return;
#endif

  path = g_dir_make_tmp ("gio-test-tree-invalid-encoding-XXXXXX", &error);
  g_assert_no_error (error);
  tmpdir = g_file_new_for_path (path);
  g_free (path);

  name = g_strdup_printf ("\260");
  file = g_file_get_child (tmpdir, name);
  g_free (name);

  g_file_replace_contents (file, "", 0, NULL, FALSE, 0, NULL, NULL, &error);
  if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT))
    {
      g_test_skip ("Unable to create testing file with non-ASCII characters.");

      g_object_unref (tmpdir);
      g_object_unref (file);
      g_clear_error (&error);

      return;
    }
  g_assert_no_error (error);

  types = g_content_type_guess_for_tree (tmpdir);
  g_strfreev (types);

  g_file_delete (file, NULL, &error);
  g_assert_no_error (error);
  g_object_unref (file);

  g_file_delete (tmpdir, NULL, &error);
  g_assert_no_error (error);
  g_object_unref (tmpdir);
}

static void
test_type_is_a_special_case (void)
{
  gboolean res;

  g_test_bug ("https://bugzilla.gnome.org/show_bug.cgi?id=782311");

  /* Everything but the inode type is application/octet-stream */
  res = g_content_type_is_a ("inode/directory", "application/octet-stream");
  g_assert_false (res);
#if !defined(__APPLE__) && !defined(G_OS_WIN32)
  res = g_content_type_is_a ("anything", "application/octet-stream");
  g_assert_true (res);
#endif
}

static void
test_guess_svg_from_data (void)
{
  const gchar svgfilecontent[] = "<svg  xmlns=\"http://www.w3.org/2000/svg\"\
      xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n\
    <rect x=\"10\" y=\"10\" height=\"100\" width=\"100\"\n\
          style=\"stroke:#ff0000; fill: #0000ff\"/>\n\
</svg>\n";

  gboolean uncertain = TRUE;
  gchar *res;

  if (skip_missing_shared_mime_info ())
    return;

  res = g_content_type_guess (NULL, (guchar *)svgfilecontent,
                              sizeof (svgfilecontent) - 1, &uncertain);
#ifdef __APPLE__
  g_assert_cmpstr (res, ==, "public.svg-image");
#elif defined(G_OS_WIN32)
  g_test_skip ("svg type detection from content is not implemented on WIN32");
#else
  g_assert_cmpstr (res, ==, "image/svg+xml");
#endif
  g_assert_false (uncertain);
  g_free (res);
}

static void
test_mime_from_content (void)
{
#ifdef __APPLE__
  gchar *mime_type;
  mime_type = g_content_type_get_mime_type ("com.microsoft.bmp");
  g_assert_cmpstr (mime_type, ==, "image/bmp");
  g_free (mime_type);
  mime_type = g_content_type_get_mime_type ("com.compuserve.gif");
  g_assert_cmpstr (mime_type, ==, "image/gif");
  g_free (mime_type);
  mime_type = g_content_type_get_mime_type ("public.png");
  g_assert_cmpstr (mime_type, ==, "image/png");
  g_free (mime_type);
  mime_type = g_content_type_get_mime_type ("public.text");
  g_assert_cmpstr (mime_type, ==, "text/*");
  g_free (mime_type);
  mime_type = g_content_type_get_mime_type ("public.svg-image");
  g_assert_cmpstr (mime_type, ==, "image/svg+xml");
  g_free (mime_type);
#elif defined(G_OS_WIN32)
  g_test_skip ("mime from content type test not implemented on WIN32");
#else
  g_test_skip ("mime from content type test not implemented on UNIX");
#endif
}

static void
test_mime_to_content (void)
{
#ifdef __APPLE__
  gchar *uti;
  uti = g_content_type_from_mime_type ("image/bmp");
  g_assert_cmpstr (uti, ==, "com.microsoft.bmp");
  g_free (uti);
  uti = g_content_type_from_mime_type ("image/gif");
  g_assert_cmpstr (uti, ==, "com.compuserve.gif");
  g_free (uti);
  uti = g_content_type_from_mime_type ("image/png");
  g_assert_cmpstr (uti, ==, "public.png");
  g_free (uti);
  uti = g_content_type_from_mime_type ("text/*");
  g_assert_cmpstr (uti, ==, "public.text");
  g_free (uti);
  uti = g_content_type_from_mime_type ("image/svg+xml");
  g_assert_cmpstr (uti, ==, "public.svg-image");
  g_free (uti);
  uti = g_content_type_from_mime_type ("application/my-custom-type");
  g_assert_true (g_str_has_prefix (uti, "dyn."));
  g_free (uti);
#elif defined(G_OS_WIN32)
  g_test_skip ("mime from content type test not implemented on WIN32");
#else
  g_test_skip ("mime from content type test not implemented on UNIX");
#endif
}

int
main (int argc, char *argv[])
{
  g_test_init (&argc, &argv, NULL);

  g_test_add_func ("/contenttype/guess", test_guess);
  g_test_add_func ("/contenttype/guess_svg_from_data", test_guess_svg_from_data);
  g_test_add_func ("/contenttype/mime_to_content", test_mime_to_content);
  g_test_add_func ("/contenttype/mime_from_content", test_mime_from_content);
  g_test_add_func ("/contenttype/unknown", test_unknown);
  g_test_add_func ("/contenttype/subtype", test_subtype);
  g_test_add_func ("/contenttype/list", test_list);
  g_test_add_func ("/contenttype/executable", test_executable);
  g_test_add_func ("/contenttype/description", test_description);
  g_test_add_func ("/contenttype/icon", test_icon);
  g_test_add_func ("/contenttype/symbolic-icon", test_symbolic_icon);
  g_test_add_func ("/contenttype/tree", test_tree);
  g_test_add_func ("/contenttype/tree_invalid_encoding",
                   test_tree_invalid_encoding);
  g_test_add_func ("/contenttype/test_type_is_a_special_case",
                   test_type_is_a_special_case);

  return g_test_run ();
}