ladybird/Userland/Libraries/LibWeb/HTML/CORSSettingAttribute.cpp

/*
 * Copyright (c) 2023, Srikavin Ramkumar <me@srikavin.me>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibWeb/HTML/CORSSettingAttribute.h>

namespace Web::HTML {

// https://html.spec.whatwg.org/multipage/urls-and-fetching.html#cors-settings-attributes
CORSSettingAttribute cors_setting_attribute_from_keyword(Optional<String> const& keyword)
{
    if (!keyword.has_value()) {
        // its missing value default is the No CORS state
        return CORSSettingAttribute::NoCORS;
    }
    if (keyword->is_empty() || keyword->bytes_as_string_view().equals_ignoring_ascii_case("anonymous"sv)) {
        return CORSSettingAttribute::Anonymous;
    }
    if (keyword->bytes_as_string_view().equals_ignoring_ascii_case("use-credentials"sv)) {
        return CORSSettingAttribute::UseCredentials;
    }

    // The attribute's invalid value default is the Anonymous state
    return CORSSettingAttribute::Anonymous;
}

// https://html.spec.whatwg.org/multipage/urls-and-fetching.html#cors-settings-attribute-credentials-mode
Fetch::Infrastructure::Request::CredentialsMode cors_settings_attribute_credentials_mode(CORSSettingAttribute attribute)
{
    switch (attribute) {
    // -> No CORS
    // -> Anonymous
    case CORSSettingAttribute::NoCORS:
    case CORSSettingAttribute::Anonymous:
        // "same-origin"
        return Fetch::Infrastructure::Request::CredentialsMode::SameOrigin;

    // -> Use Credentials
    case CORSSettingAttribute::UseCredentials:
        // "include"
        return Fetch::Infrastructure::Request::CredentialsMode::Include;
    }

    VERIFY_NOT_REACHED();
}

}