tests: Add test for decompression failure in GResource

This was one of the code paths not currently covered by unit tests, so
let’s add a test for it.

This tests what happens when a structurally valid GResource file, but
with a corrupt entry for a compressed file, is loaded.

Signed-off-by: Philip Withnall <pwithnall@gnome.org>

Helps: #3465
This commit is contained in:
Philip Withnall 2024-09-09 17:37:52 +01:00
parent f1c639c7dc
commit 7ed386a10b
No known key found for this signature in database
GPG Key ID: DCDF5885B1F3ED73
3 changed files with 73 additions and 0 deletions

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@ -859,6 +859,21 @@ if not meson.is_cross_build()
install_tag : 'tests',
install : installed_tests_enabled)
test6_gresource = custom_target('test6.gresource',
input : 'test6.gresource.xml',
depends : [gspawn_helpers],
output : 'test6.gresource',
command : [glib_compile_resources,
compiler_type,
'--target=@OUTPUT@',
'--sourcedir=' + meson.current_source_dir(),
'--sourcedir=' + meson.current_build_dir(),
'--internal',
'@INPUT@'],
install_dir : installed_tests_execdir,
install_tag : 'tests',
install : installed_tests_enabled)
test_resources2_c = custom_target('test_resources2.c',
input : 'test3.gresource.xml',
depends : [gspawn_helpers],
@ -930,6 +945,7 @@ if not meson.is_cross_build()
resources_extra_sources = [
test_gresource,
test6_gresource,
test_resources_c,
test_resources2_c,
test_resources2_h,

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@ -401,6 +401,55 @@ test_resource_data_empty (void)
g_clear_error (&local_error);
}
static void
test_resource_data_corrupt_compression (void)
{
GFile *resource_file = NULL;
GBytes *resource_bytes = NULL, *corrupt_bytes = NULL, *data_bytes = NULL;
guint8 *corrupt_data = NULL;
GResource *resource = NULL;
GError *local_error = NULL;
g_test_summary ("Test error handling for corrupt GResource files (specifically, corrupt zlib compression).");
resource_file = g_file_new_for_path (g_test_get_filename (G_TEST_BUILT, "test6.gresource", NULL));
resource_bytes = g_file_load_bytes (resource_file, NULL, NULL, &local_error);
g_assert_no_error (local_error);
g_clear_object (&resource_file);
/* Test loading the resource normally, to check it works. */
resource = g_resource_new_from_data (resource_bytes, &local_error);
g_assert_no_error (local_error);
data_bytes = g_resource_lookup_data (resource, "/test-corrupt-compression.txt",
G_RESOURCE_LOOKUP_FLAGS_NONE, &local_error);
g_assert_no_error (local_error);
g_assert_nonnull (data_bytes);
g_clear_pointer (&data_bytes, g_bytes_unref);
g_clear_pointer (&resource, g_resource_unref);
/* Modify the data to zero out bytes 0x90 to 0x100. These are comfortably
* within the compressed file data, so should break that while not breaking
* the GVDB header. */
corrupt_data = g_memdup2 (g_bytes_get_data (resource_bytes, NULL), g_bytes_get_size (resource_bytes));
memset (corrupt_data + 0x90, 0, 0x10);
corrupt_bytes = g_bytes_new_take (g_steal_pointer (&corrupt_data), g_bytes_get_size (resource_bytes));
resource = g_resource_new_from_data (corrupt_bytes, &local_error);
g_assert_no_error (local_error);
g_bytes_unref (corrupt_bytes);
data_bytes = g_resource_lookup_data (resource, "/test-corrupt-compression.txt",
G_RESOURCE_LOOKUP_FLAGS_NONE, &local_error);
g_assert_error (local_error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_INTERNAL);
g_assert_null (data_bytes);
g_clear_error (&local_error);
g_clear_pointer (&resource_bytes, g_bytes_unref);
g_clear_pointer (&resource, g_resource_unref);
}
static void
test_resource_registered (void)
{
@ -1060,6 +1109,7 @@ main (int argc,
g_test_add_func ("/resource/data", test_resource_data);
g_test_add_func ("/resource/data_unaligned", test_resource_data_unaligned);
g_test_add_func ("/resource/data-corrupt", test_resource_data_corrupt);
g_test_add_func ("/resource/data-corrupt-compression", test_resource_data_corrupt_compression);
g_test_add_func ("/resource/data-empty", test_resource_data_empty);
g_test_add_func ("/resource/registered", test_resource_registered);
g_test_add_func ("/resource/manual", test_resource_manual);

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@ -0,0 +1,7 @@
<?xml version="1.0" encoding="UTF-8"?>
<gresources>
<gresource>
<!-- An arbitrary text file which is large enough to have a non-trivial compressed form -->
<file compressed="true" alias="test-corrupt-compression.txt">test.gresource.xml</file>
</gresource>
</gresources>