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Prevent crash on conversion of invalid data in Image #84782

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merged 1 commit into from
Dec 11, 2023
Merged

Prevent crash on conversion of invalid data in Image #84782

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1 change: 1 addition & 0 deletions core/io/image.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -509,6 +509,7 @@ static void _convert(int p_width, int p_height, const uint8_t *p_src, uint8_t *p
}

void Image::convert(Format p_new_format) {
ERR_FAIL_INDEX_MSG(p_new_format, FORMAT_MAX, "The Image format specified (" + itos(p_new_format) + ") is out of range. See Image's Format enum.");
if (data.size() == 0) {
return;
}
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23 changes: 23 additions & 0 deletions tests/core/io/test_image.h
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Expand Up @@ -403,6 +403,29 @@ TEST_CASE("[Image] Custom mipmaps") {
}
}

TEST_CASE("[Image] Convert image") {
for (int format = Image::FORMAT_RF; format < Image::FORMAT_RGBE9995; format++) {
for (int new_format = Image::FORMAT_RF; new_format < Image::FORMAT_RGBE9995; new_format++) {
Ref<Image> image = memnew(Image(4, 4, false, (Image::Format)format));
image->convert((Image::Format)new_format);
String format_string = Image::format_names[(Image::Format)format];
String new_format_string = Image::format_names[(Image::Format)new_format];
format_string = "Error converting from " + format_string + " to " + new_format_string + ".";
CHECK_MESSAGE(image->get_format() == new_format, format_string);
}
}

Ref<Image> image = memnew(Image(4, 4, false, Image::FORMAT_RGBA8));
PackedByteArray image_data = image->get_data();
image->convert((Image::Format)-1);
CHECK_MESSAGE(image->get_data() == image_data, "Image conversion to invalid type (-1) should not alter image.");

Ref<Image> image2 = memnew(Image(4, 4, false, Image::FORMAT_RGBA8));
image_data = image2->get_data();
image2->convert((Image::Format)(Image::FORMAT_MAX + 1));
CHECK_MESSAGE(image2->get_data() == image_data, "Image conversion to invalid type (Image::FORMAT_MAX + 1) should not alter image.");
}

} // namespace TestImage

#endif // TEST_IMAGE_H
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