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// Copyright 2025 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/ip_protection/common/masked_domain_list.h"
#include <cstdint>
#include <string>
#include <utility>
#include "base/debug/crash_logging.h"
#include "base/files/file.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/threading/thread_restrictions.h"
#include "components/ip_protection/common/flat/masked_domain_list_generated.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/flatbuffers/src/include/flatbuffers/flatbuffers.h"
#include "url/url_util.h"
namespace ip_protection {
class MaskedDomainListTest : public testing::Test {
public:
base::FilePath MakeTempPath() {
base::ScopedAllowBlockingForTesting allow_blocking;
EXPECT_TRUE(scoped_temp_dir_.IsValid() ||
scoped_temp_dir_.CreateUniqueTempDir());
return scoped_temp_dir_.GetPath().AppendASCII(
base::NumberToString(filename_suffix_++));
}
MaskedDomainList OpenMdl(base::FilePath& path) {
base::File file(
path, base::File::Flags::FLAG_OPEN | base::File::Flags::FLAG_READ);
uint64_t size = file.GetLength();
EXPECT_NE(size, 0UL);
return MaskedDomainList(std::move(file), size);
}
private:
int filename_suffix_ = 0;
base::ScopedTempDir scoped_temp_dir_;
};
TEST_F(MaskedDomainListTest, Invalid) {
base::FilePath path = MakeTempPath();
MaskedDomainList mdl(base::File(), 10UL);
EXPECT_EQ(mdl.Verify(), false);
}
TEST_F(MaskedDomainListTest, AddOwnerCollision) {
base::FilePath path = MakeTempPath();
auto bldr = MaskedDomainList::Builder();
EXPECT_TRUE(bldr.AddOwner("example.com", 20, /*is_resource=*/true,
/*is_wildcard=*/false));
EXPECT_FALSE(bldr.AddOwner("example.com", 30, /*is_resource=*/false,
/*is_wildcard=*/true));
CHECK(bldr.Finish(path));
MaskedDomainList mdl = OpenMdl(path);
// Result matches the first call to AddOwner.
EXPECT_EQ(mdl.Get("example.com"),
(MaskedDomainList::GetResult{.owner_id = 20, .is_resource = true}));
}
TEST_F(MaskedDomainListTest, GetSubdomainHandling) {
base::FilePath path = MakeTempPath();
auto bldr = MaskedDomainList::Builder();
EXPECT_TRUE(bldr.AddOwner("sub.foo.example.com", 20, /*is_resource=*/true,
/*is_wildcard=*/false));
EXPECT_TRUE(bldr.AddOwner("foo.example.com", 10, /*is_resource=*/false,
/*is_wildcard=*/false));
EXPECT_TRUE(bldr.AddOwner("example.com", 999, /*is_resource=*/true,
/*is_wildcard=*/true));
CHECK(bldr.Finish(path));
MaskedDomainList mdl = OpenMdl(path);
EXPECT_EQ(
mdl.Get("sub.foo.example.com"),
(MaskedDomainList::GetResult{.owner_id = 20U, .is_resource = true}));
EXPECT_EQ(
mdl.Get("boat.foo.example.com"),
(MaskedDomainList::GetResult{.owner_id = 999U, .is_resource = true}));
EXPECT_EQ(
mdl.Get("foo.example.com"),
(MaskedDomainList::GetResult{.owner_id = 10U, .is_resource = false}));
EXPECT_EQ(
mdl.Get("bar.example.com"),
(MaskedDomainList::GetResult{.owner_id = 999U, .is_resource = true}));
EXPECT_EQ(
mdl.Get("example.com"),
(MaskedDomainList::GetResult{.owner_id = 999U, .is_resource = true}));
EXPECT_EQ(mdl.Get("com"), (MaskedDomainList::GetResult{
.owner_id = 0U, .is_resource = false}));
EXPECT_EQ(
mdl.Get("example.co.uk"),
(MaskedDomainList::GetResult{.owner_id = 0U, .is_resource = false}));
}
TEST_F(MaskedDomainListTest, IsOwnedResource) {
base::FilePath path = MakeTempPath();
auto bldr = MaskedDomainList::Builder();
const uint32_t ACME = 10;
EXPECT_TRUE(bldr.AddOwner("acme.com", ACME, /*is_resource=*/false,
/*is_wildcard=*/true));
EXPECT_TRUE(bldr.AddOwner("acme.co.br", ACME, /*is_resource=*/false,
/*is_wildcard=*/true));
EXPECT_TRUE(bldr.AddOwner("acme.net", ACME, /*is_resource=*/false,
/*is_wildcard=*/true));
EXPECT_TRUE(bldr.AddOwner("acme-cdn.net", ACME, /*is_resource=*/true,
/*is_wildcard=*/true));
const uint32_t GLOBEX = 20;
EXPECT_TRUE(bldr.AddOwner("globex.com", GLOBEX, /*is_resource=*/false,
/*is_wildcard=*/false));
EXPECT_TRUE(bldr.AddOwner("globex-cdn.net", GLOBEX, /*is_resource=*/true,
/*is_wildcard=*/true));
CHECK(bldr.Finish(path));
MaskedDomainList mdl = OpenMdl(path);
EXPECT_FALSE(mdl.IsOwnedResource("initech.com"))
<< "Un-owned domain should not match";
EXPECT_FALSE(mdl.IsOwnedResource("foo.initech.com"))
<< "Un-owned subdomain should not match";
EXPECT_FALSE(mdl.IsOwnedResource("acme.com")) << "Property should not match";
EXPECT_FALSE(mdl.IsOwnedResource("foo.acme.com"))
<< "Property subdomain should not match";
EXPECT_FALSE(mdl.IsOwnedResource("acme.co.br"))
<< "Property should not match";
EXPECT_FALSE(mdl.IsOwnedResource("foo.acme.co.br"))
<< "Property subdomain should not match";
EXPECT_FALSE(mdl.IsOwnedResource("acme.net")) << "Property should not match";
EXPECT_FALSE(mdl.IsOwnedResource("foo.acme.net"))
<< "Property subdomain should not match";
EXPECT_TRUE(mdl.IsOwnedResource("acme-cdn.net")) << "Resource should match";
EXPECT_TRUE(mdl.IsOwnedResource("foo.acme-cdn.net"))
<< "Resource subdomain should match";
}
TEST_F(MaskedDomainListTest, Matches) {
base::FilePath path = MakeTempPath();
auto bldr = MaskedDomainList::Builder();
const uint32_t ACME = 10;
EXPECT_TRUE(bldr.AddOwner("acme.com", ACME, /*is_resource=*/false,
/*is_wildcard=*/true));
EXPECT_TRUE(bldr.AddOwner("acme.co.br", ACME, /*is_resource=*/false,
/*is_wildcard=*/true));
EXPECT_TRUE(bldr.AddOwner("acme.net", ACME, /*is_resource=*/false,
/*is_wildcard=*/true));
EXPECT_TRUE(bldr.AddOwner("acme-cdn.net", ACME, /*is_resource=*/true,
/*is_wildcard=*/true));
const uint32_t GLOBEX = 20;
EXPECT_TRUE(bldr.AddOwner("globex.com", GLOBEX, /*is_resource=*/false,
/*is_wildcard=*/false));
EXPECT_TRUE(bldr.AddOwner("globex-cdn.net", GLOBEX, /*is_resource=*/true,
/*is_wildcard=*/true));
CHECK(bldr.Finish(path));
MaskedDomainList mdl = OpenMdl(path);
// 1P requests.
EXPECT_FALSE(mdl.Matches("initech.com", "initech.com"))
<< "1P request not on MDL should not match";
EXPECT_FALSE(mdl.Matches("acme.com", "acme.co.br"))
<< "1P request to Acme property should not match";
EXPECT_FALSE(mdl.Matches("acme-cdn.net", "acme.co.br"))
<< "1P request to Acme resource should not match";
EXPECT_FALSE(mdl.Matches("pixel.acme-cdn.net", "acme.co.br"))
<< "1P request to Acme resource subdomain should not match";
EXPECT_FALSE(mdl.Matches("acme-cdn.net", "www.acme.co.br"))
<< "1P request from subdomain to Acme resource should not match";
EXPECT_FALSE(mdl.Matches("pixel.acme-cdn.net", "www.acme.co.br"))
<< "1P request from subdomain to Acme resource subdomain should not "
"match";
// 3P requests.
EXPECT_FALSE(mdl.Matches("acme.com", "initech.com"))
<< "3P request to Acme property should not match";
EXPECT_FALSE(mdl.Matches("www.acme.com", "initech.com"))
<< "3P request to Acme property subdomain should not match";
EXPECT_TRUE(mdl.Matches("acme-cdn.net", "initech.com"))
<< "3P request to Acme resource should match";
EXPECT_TRUE(mdl.Matches("pixel.acme-cdn.net", "initech.com"))
<< "3P request to Acme resource subdomain should match";
EXPECT_TRUE(mdl.Matches("acme-cdn.net", "globex.com"))
<< "3P request from a listed owner property to Acme resource should "
"match";
EXPECT_TRUE(mdl.Matches("pixel.acme-cdn.net", "globex.com"))
<< "3P request from a listed owner property to Acme resource subdomain "
"should match";
EXPECT_TRUE(mdl.Matches("acme-cdn.net", "globex-cdn.net"))
<< "3P request from a listed owner resource to Acme resource should "
"match";
EXPECT_TRUE(mdl.Matches("pixel.acme-cdn.net", "globex-cdn.net"))
<< "3P request from a listed owner resource to Acme resource subdomain "
"should match";
}
} // namespace ip_protection
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