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// Copyright 2022 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/first_party_sets/first_party_sets_context_config.h"
#include "base/containers/map_util.h"
#include "net/first_party_sets/first_party_set_entry_override.h"
namespace net {
namespace {
// Verifies all preconditions.
//
// All aliases must have an explicit non-deletion entry in `customizations`,
// and must map to a canonical site that has an identical entry.
bool VerifyPreconditions(
const base::flat_map<SchemefulSite, FirstPartySetEntryOverride>&
customizations,
const base::flat_map<SchemefulSite, SchemefulSite>& aliases) {
return std::ranges::all_of(aliases, [&](const auto& pair) {
const FirstPartySetEntryOverride* alias_override =
base::FindOrNull(customizations, pair.first);
if (!alias_override || alias_override->IsDeletion()) {
return false;
}
const FirstPartySetEntryOverride* canonical_override =
base::FindOrNull(customizations, pair.second);
return canonical_override && *alias_override == *canonical_override;
});
}
} // namespace
FirstPartySetsContextConfig::FirstPartySetsContextConfig() = default;
std::optional<FirstPartySetsContextConfig> FirstPartySetsContextConfig::Create(
base::flat_map<SchemefulSite, FirstPartySetEntryOverride> customizations,
base::flat_map<SchemefulSite, SchemefulSite> aliases) {
if (!VerifyPreconditions(customizations, aliases)) {
return std::nullopt;
}
return FirstPartySetsContextConfig(std::move(customizations),
std::move(aliases));
}
FirstPartySetsContextConfig::FirstPartySetsContextConfig(
base::flat_map<SchemefulSite, FirstPartySetEntryOverride> customizations,
base::flat_map<SchemefulSite, SchemefulSite> aliases)
: customizations_(std::move(customizations)),
aliases_(std::move(aliases)) {}
FirstPartySetsContextConfig::FirstPartySetsContextConfig(
FirstPartySetsContextConfig&& other) = default;
FirstPartySetsContextConfig& FirstPartySetsContextConfig::operator=(
FirstPartySetsContextConfig&& other) = default;
FirstPartySetsContextConfig::~FirstPartySetsContextConfig() = default;
FirstPartySetsContextConfig FirstPartySetsContextConfig::Clone() const {
return FirstPartySetsContextConfig(customizations_, aliases_);
}
bool FirstPartySetsContextConfig::operator==(
const FirstPartySetsContextConfig& other) const = default;
std::optional<FirstPartySetEntryOverride>
FirstPartySetsContextConfig::FindOverride(const SchemefulSite& site) const {
if (const auto it = customizations_.find(site); it != customizations_.end()) {
return it->second;
}
return std::nullopt;
}
bool FirstPartySetsContextConfig::Contains(const SchemefulSite& site) const {
return FindOverride(site).has_value();
}
bool FirstPartySetsContextConfig::ForEachCustomizationEntry(
base::FunctionRef<bool(const SchemefulSite&,
const FirstPartySetEntryOverride&)> f) const {
for (const auto& [site, override] : customizations_) {
if (!f(site, override))
return false;
}
return true;
}
void FirstPartySetsContextConfig::ForEachAlias(
base::FunctionRef<void(const SchemefulSite&, const SchemefulSite&)> f)
const {
for (const auto& [alias, canonical] : aliases_) {
f(alias, canonical);
}
}
} // namespace net
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