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61 lines
2.6 KiB
C++
61 lines
2.6 KiB
C++
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/*
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* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/IPv4Address.h>
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#include <AK/IPv6Address.h>
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#include <LibWeb/HTML/Origin.h>
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#include <LibWeb/SecureContexts/AbstractOperations.h>
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#include <LibWeb/URL/URL.h>
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namespace Web::SecureContexts {
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// https://w3c.github.io/webappsec-secure-contexts/#is-origin-trustworthy
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Trustworthiness is_origin_potentially_trustworthy(HTML::Origin const& origin)
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{
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// 1. If origin is an opaque origin, return "Not Trustworthy".
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if (origin.is_opaque())
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return Trustworthiness::NotTrustworthy;
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// 2. Assert: origin is a tuple origin.
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// 3. If origin’s scheme is either "https" or "wss", return "Potentially Trustworthy".
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// Note: This is meant to be analog to the a priori authenticated URL concept in [MIX].
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if (origin.scheme().is_one_of("https"sv, "wss"sv))
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return Trustworthiness::PotentiallyTrustworthy;
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// 4. If origin’s host matches one of the CIDR notations 127.0.0.0/8 or ::1/128 [RFC4632], return "Potentially Trustworthy".
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if (auto ipv4_address = IPv4Address::from_string(origin.host()); ipv4_address.has_value() && (ipv4_address->to_u32() & 0xff000000) != 0)
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return Trustworthiness::PotentiallyTrustworthy;
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if (auto ipv6_address = IPv6Address::from_string(origin.host()); ipv6_address.has_value() && ipv6_address->to_string() == "::1")
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return Trustworthiness::PotentiallyTrustworthy;
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// 5. If the user agent conforms to the name resolution rules in [let-localhost-be-localhost] and one of the following is true:
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// - origin’s host is "localhost" or "localhost."
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// - origin’s host ends with ".localhost" or ".localhost."
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// then return "Potentially Trustworthy".
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// Note: See § 5.2 localhost for details on the requirements here.
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if (origin.host().is_one_of("localhost"sv, "localhost.")
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|| origin.host().ends_with(".localhost"sv)
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|| origin.host().ends_with(".localhost."sv)) {
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return Trustworthiness::PotentiallyTrustworthy;
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}
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// 6. If origin’s scheme is "file", return "Potentially Trustworthy".
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if (origin.scheme() == "file"sv)
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return Trustworthiness::PotentiallyTrustworthy;
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// 7. If origin’s scheme component is one which the user agent considers to be authenticated, return "Potentially Trustworthy".
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// Note: See § 7.1 Packaged Applications for detail here.
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// 8. If origin has been configured as a trustworthy origin, return "Potentially Trustworthy".
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// Note: See § 7.2 Development Environments for detail here.
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// 9. Return "Not Trustworthy".
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return Trustworthiness::NotTrustworthy;
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}
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}
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