import com.code_intelligence.jazzer.api.FuzzedDataProvider; import jakarta.servlet.http.Cookie; import org.springframework.mock.web.MockHttpServletRequest; import org.springframework.mock.web.MockHttpServletResponse; import org.springframework.web.servlet.i18n.CookieLocaleResolver; import java.util.Locale; import static org.springframework.web.servlet.i18n.CookieLocaleResolver.LOCALE_REQUEST_ATTRIBUTE_NAME; public class CookieLocaleResolverFuzzer { public static void fuzzerTestOneInput(FuzzedDataProvider data) { CookieLocaleResolver resolver = new CookieLocaleResolver(); String cookieName = data.consumeString(100); if (cookieName.isEmpty()) { return; } MockHttpServletRequest request = new MockHttpServletRequest(); request.setScheme("http"); request.setServerName("localhost"); request.setServerPort(data.consumeInt()); request.setRequestURI(data.consumeString(100)); request.setQueryString(data.consumeString(100)); request.removeAttribute(LOCALE_REQUEST_ATTRIBUTE_NAME); MockHttpServletResponse response = new MockHttpServletResponse(); if (data.consumeBoolean()) { try { response.setHeader(data.consumeString(50), data.consumeString(100)); } catch (IllegalArgumentException ignored) {} } try { if (data.consumeBoolean()) { Locale locale = new Locale(data.consumeString(50)); resolver.setLocale(request, response, locale); } Cookie cookie = new Cookie(data.consumeString(100), data.consumeString(500)); request.setCookies(cookie); resolver.resolveLocaleContext(request); } catch (IllegalArgumentException | IllegalStateException ignored) {} } }