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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/aggregation_service/aggregation_coordinator_utils.h"
#include <algorithm>
#include <string_view>
#include <utility>
#include <vector>
#include "base/check.h"
#include "base/containers/contains.h"
#include "base/no_destructor.h"
#include "base/strings/string_split.h"
#include "components/aggregation_service/features.h"
#include "components/attribution_reporting/is_origin_suitable.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace aggregation_service {
namespace {
std::vector<url::Origin> DefaultOrigins() {
return {url::Origin::Create(GURL(kDefaultAggregationCoordinatorAwsCloud)),
url::Origin::Create(GURL(kDefaultAggregationCoordinatorGcpCloud))};
}
std::vector<url::Origin> Parse(std::string_view unparsed) {
std::vector<url::Origin> parsed;
std::vector<std::string_view> tokens = base::SplitStringPiece(
unparsed, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
for (const std::string_view token : tokens) {
auto origin = url::Origin::Create(GURL(token));
if (!attribution_reporting::IsOriginSuitable(origin)) {
return DefaultOrigins();
}
parsed.push_back(std::move(origin));
}
if (parsed.empty()) {
return DefaultOrigins();
}
return parsed;
}
class CoordinatorOrigins {
public:
CoordinatorOrigins() = default;
~CoordinatorOrigins() = default;
explicit CoordinatorOrigins(std::string_view unparsed)
: CoordinatorOrigins(Parse(unparsed)) {}
explicit CoordinatorOrigins(std::vector<url::Origin> origins)
: origins_(std::move(origins)) {
CHECK(origins_.empty() || IsValid());
}
CoordinatorOrigins(const CoordinatorOrigins&) = delete;
CoordinatorOrigins& operator=(const CoordinatorOrigins&) = delete;
CoordinatorOrigins(CoordinatorOrigins&&) = default;
CoordinatorOrigins& operator=(CoordinatorOrigins&&) = default;
bool contains(const url::Origin& origin) const {
CHECK(IsValid());
return base::Contains(origins_, origin);
}
const url::Origin& default_origin() const {
CHECK(IsValid());
return origins_.front();
}
const std::vector<url::Origin>& origins() const { return origins_; }
[[nodiscard]] bool IsValid() const {
if (origins_.empty()) {
return false;
}
return std::ranges::all_of(origins_,
&attribution_reporting::IsOriginSuitable);
}
private:
std::vector<url::Origin> origins_;
};
CoordinatorOrigins& GetCoordinatorOrigins() {
static base::NoDestructor<CoordinatorOrigins> g_origins;
if (!g_origins->origins().empty()) {
return *g_origins;
}
*g_origins =
CoordinatorOrigins(kAggregationServiceCoordinatorAllowlist.Get());
return *g_origins;
}
} // namespace
url::Origin GetDefaultAggregationCoordinatorOrigin() {
return GetCoordinatorOrigins().default_origin();
}
bool IsAggregationCoordinatorOriginAllowed(const url::Origin& origin) {
return GetCoordinatorOrigins().contains(origin);
}
ScopedAggregationCoordinatorAllowlistForTesting::
ScopedAggregationCoordinatorAllowlistForTesting(
std::vector<url::Origin> origins)
: previous_(GetCoordinatorOrigins().origins()) {
GetCoordinatorOrigins() = CoordinatorOrigins(std::move(origins));
}
ScopedAggregationCoordinatorAllowlistForTesting::
~ScopedAggregationCoordinatorAllowlistForTesting() {
GetCoordinatorOrigins() = CoordinatorOrigins(std::move(previous_));
}
} // namespace aggregation_service
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