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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/base/schemeful_site.h"
#include "base/check.h"
#include "base/metrics/histogram_macros.h"
#include "base/trace_event/memory_usage_estimator.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/base/url_util.h"
#include "url/gurl.h"
#include "url/url_canon.h"
#include "url/url_constants.h"
namespace net {
// Return a tuple containing:
// * a new origin using the registerable domain of `origin` if possible and
// a port of 0; otherwise, the passed-in origin.
// * a bool indicating whether `origin` had a non-null registerable domain.
// (False if `origin` was opaque.)
//
// Follows steps specified in
// https://html.spec.whatwg.org/multipage/origin.html#obtain-a-site
SchemefulSite::ObtainASiteResult SchemefulSite::ObtainASite(
const url::Origin& origin) {
// 1. If origin is an opaque origin, then return origin.
if (origin.opaque())
return {origin, false /* used_registerable_domain */};
std::string registerable_domain;
// Non-normative step.
// We only lookup the registerable domain for schemes with network hosts, this
// is non-normative. Other schemes for non-opaque origins do not
// meaningfully have a registerable domain for their host, so they are
// skipped.
if (IsStandardSchemeWithNetworkHost(origin.scheme())) {
registerable_domain = GetDomainAndRegistry(
origin, net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
}
// If origin's host's registrable domain is null, then return (origin's
// scheme, origin's host).
//
// `GetDomainAndRegistry()` returns an empty string for IP literals and
// effective TLDs.
//
// Note that `registerable_domain` could still end up empty, since the
// `origin` might have a scheme that permits empty hostnames, such as "file".
bool used_registerable_domain = !registerable_domain.empty();
if (!used_registerable_domain)
registerable_domain = origin.host();
int port = url::DefaultPortForScheme(origin.scheme().c_str(),
origin.scheme().length());
// Provide a default port of 0 for non-standard schemes.
if (port == url::PORT_UNSPECIFIED)
port = 0;
return {url::Origin::CreateFromNormalizedTuple(origin.scheme(),
registerable_domain, port),
used_registerable_domain};
}
SchemefulSite::SchemefulSite(ObtainASiteResult result)
: site_as_origin_(std::move(result.origin)) {}
SchemefulSite::SchemefulSite(const url::Origin& origin)
: SchemefulSite(ObtainASite(origin)) {}
SchemefulSite::SchemefulSite(const GURL& url)
: SchemefulSite(url::Origin::Create(url)) {}
SchemefulSite::SchemefulSite(const SchemefulSite& other) = default;
SchemefulSite::SchemefulSite(SchemefulSite&& other) noexcept = default;
SchemefulSite& SchemefulSite::operator=(const SchemefulSite& other) = default;
SchemefulSite& SchemefulSite::operator=(SchemefulSite&& other) noexcept =
default;
// static
bool SchemefulSite::FromWire(const url::Origin& site_as_origin,
SchemefulSite* out) {
// The origin passed into this constructor may not match the
// `site_as_origin_` used as the internal representation of the schemeful
// site. However, a valid SchemefulSite's internal origin should result in a
// match if used to construct another SchemefulSite. Thus, if there is a
// mismatch here, we must indicate a failure.
SchemefulSite candidate(site_as_origin);
if (candidate.site_as_origin_ != site_as_origin)
return false;
*out = std::move(candidate);
return true;
}
absl::optional<SchemefulSite> SchemefulSite::CreateIfHasRegisterableDomain(
const url::Origin& origin) {
ObtainASiteResult result = ObtainASite(origin);
if (!result.used_registerable_domain)
return absl::nullopt;
return SchemefulSite(std::move(result));
}
void SchemefulSite::ConvertWebSocketToHttp() {
if (site_as_origin_.scheme() == url::kWsScheme ||
site_as_origin_.scheme() == url::kWssScheme) {
site_as_origin_ = url::Origin::Create(
ChangeWebSocketSchemeToHttpScheme(site_as_origin_.GetURL()));
}
}
// static
SchemefulSite SchemefulSite::Deserialize(const std::string& value) {
return SchemefulSite(GURL(value));
}
std::string SchemefulSite::Serialize() const {
return site_as_origin_.Serialize();
}
std::string SchemefulSite::SerializeFileSiteWithHost() const {
DCHECK_EQ(url::kFileScheme, site_as_origin_.scheme());
return site_as_origin_.GetTupleOrPrecursorTupleIfOpaque().Serialize();
}
std::string SchemefulSite::GetDebugString() const {
return site_as_origin_.GetDebugString();
}
GURL SchemefulSite::GetURL() const {
return site_as_origin_.GetURL();
}
const url::Origin& SchemefulSite::GetInternalOriginForTesting() const {
return site_as_origin_;
}
size_t SchemefulSite::EstimateMemoryUsage() const {
return base::trace_event::EstimateMemoryUsage(site_as_origin_);
}
bool SchemefulSite::operator==(const SchemefulSite& other) const {
return site_as_origin_ == other.site_as_origin_;
}
bool SchemefulSite::operator!=(const SchemefulSite& other) const {
return !(*this == other);
}
// Allows SchemefulSite to be used as a key in STL containers (for example, a
// std::set or std::map).
bool SchemefulSite::operator<(const SchemefulSite& other) const {
return site_as_origin_ < other.site_as_origin_;
}
// static
absl::optional<SchemefulSite> SchemefulSite::DeserializeWithNonce(
base::PassKey<NetworkAnonymizationKey>,
const std::string& value) {
return DeserializeWithNonce(value);
}
// static
absl::optional<SchemefulSite> SchemefulSite::DeserializeWithNonce(
const std::string& value) {
absl::optional<url::Origin> result = url::Origin::Deserialize(value);
if (!result)
return absl::nullopt;
return SchemefulSite(result.value());
}
absl::optional<std::string> SchemefulSite::SerializeWithNonce(
base::PassKey<NetworkAnonymizationKey>) {
return SerializeWithNonce();
}
absl::optional<std::string> SchemefulSite::SerializeWithNonce() {
return site_as_origin_.SerializeWithNonceAndInitIfNeeded();
}
bool SchemefulSite::SchemelesslyEqual(const SchemefulSite& other) const {
return site_as_origin_.host() == other.site_as_origin_.host();
}
std::ostream& operator<<(std::ostream& os, const SchemefulSite& ss) {
os << ss.Serialize();
return os;
}
} // namespace net
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