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FontEditor+TextEditor+Playground: Refuse to load device files

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This prevents the undefined behaviour that would come up as a result of
doing so. (For example: opening "infinite" devices like /dev/full will
result in an infinite loop until exhaustion of memory)
This commit is contained in:
Idan Horowitz 2021-03-30 00:37:30 +03:00 • committed by Andreas Kling
parent aff774c8ac
commit 77601e09c8
4 changed files with 31 additions and 2 deletions
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16
Userland/Applications/FontEditor/main.cpp
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@ -80,7 +80,13 @@ int main(int argc, char** argv)
path = "/tmp/saved.font";
edited_font = static_ptr_cast<Gfx::BitmapFont>(Gfx::FontDatabase::default_font().clone());
} else {
edited_font = static_ptr_cast<Gfx::BitmapFont>(Gfx::BitmapFont::load_from_file(path)->clone());
auto bitmap_font = Gfx::BitmapFont::load_from_file(path);
if (!bitmap_font) {
String message = String::formatted("Couldn't load font: {}\n", path);
GUI::MessageBox::show(nullptr, message, "Font Editor", GUI::MessageBox::Type::Error);
return 1;
}
edited_font = static_ptr_cast<Gfx::BitmapFont>(bitmap_font->clone());
if (!edited_font) {
String message = String::formatted("Couldn't load font: {}\n", path);
GUI::MessageBox::show(nullptr, message, "Font Editor", GUI::MessageBox::Type::Error);
@ -112,7 +118,13 @@ int main(int argc, char** argv)
if (!open_path.has_value())
return;
RefPtr<Gfx::BitmapFont> new_font = static_ptr_cast<Gfx::BitmapFont>(Gfx::BitmapFont::load_from_file(open_path.value())->clone());
auto bitmap_font = Gfx::BitmapFont::load_from_file(open_path.value());
if (!bitmap_font) {
String message = String::formatted("Couldn't load font: {}\n", open_path.value());
GUI::MessageBox::show(window, message, "Font Editor", GUI::MessageBox::Type::Error);
return;
}
RefPtr<Gfx::BitmapFont> new_font = static_ptr_cast<Gfx::BitmapFont>(bitmap_font->clone());
if (!new_font) {
String message = String::formatted("Couldn't load font: {}\n", open_path.value());
GUI::MessageBox::show(window, message, "Font Editor", GUI::MessageBox::Type::Error);