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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40284755): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif
// This file contains unit tests for the sid class.
#include "base/win/sid.h"
#include <windows.h>
#include <sddl.h>
#include <algorithm>
#include <optional>
#include "base/win/atl.h"
#include "base/win/scoped_handle.h"
#include "base/win/scoped_localalloc.h"
#include "base/win/win_util.h"
#include "build/branding_buildflags.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base::win {
namespace {
bool EqualSid(const std::optional<Sid>& sid, const ATL::CSid& compare_sid) {
if (!sid) {
return false;
}
return sid->Equal(const_cast<SID*>(compare_sid.GetPSID()));
}
bool EqualSid(const Sid& sid, const std::wstring& sddl_sid) {
PSID compare_sid;
if (!::ConvertStringSidToSid(sddl_sid.c_str(), &compare_sid)) {
return false;
}
auto sid_ptr = TakeLocalAlloc(compare_sid);
return sid.Equal(sid_ptr.get());
}
bool EqualSid(const std::optional<Sid>& sid, WELL_KNOWN_SID_TYPE known_sid) {
if (!sid) {
return false;
}
char known_sid_buffer[SECURITY_MAX_SID_SIZE] = {};
DWORD size = SECURITY_MAX_SID_SIZE;
if (!::CreateWellKnownSid(known_sid, nullptr, known_sid_buffer, &size)) {
return false;
}
return sid->Equal(known_sid_buffer);
}
bool TestSidVector(std::optional<std::vector<Sid>> sids,
const std::vector<std::wstring>& sddl) {
return sids && std::ranges::equal(
*sids, sddl, [](const Sid& sid, const std::wstring& sddl) {
return EqualSid(sid, sddl);
});
}
bool TestFromSddlStringVector(const std::vector<std::wstring> sddl) {
return TestSidVector(Sid::FromSddlStringVector(sddl), sddl);
}
typedef decltype(::DeriveCapabilitySidsFromName)*
DeriveCapabilitySidsFromNameFunc;
// Get the DeriveCapabilitySidsFromName API dynamically. Versions of Windows 10
// older than 1809 do not implement this method. By loading dynamically we can
// skip tests when running on these older versions. Online documentation for
// this API claims it's supported back to Windows 2003, however this is entirely
// incorrect.
DeriveCapabilitySidsFromNameFunc GetDeriveCapabilitySidsFromName() {
static const DeriveCapabilitySidsFromNameFunc derive_capability_sids =
[]() -> DeriveCapabilitySidsFromNameFunc {
HMODULE module = GetModuleHandle(L"api-ms-win-security-base-l1-2-2.dll");
if (!module) {
return nullptr;
}
return reinterpret_cast<DeriveCapabilitySidsFromNameFunc>(
::GetProcAddress(module, "DeriveCapabilitySidsFromName"));
}();
return derive_capability_sids;
}
bool EqualNamedCapSid(const Sid& sid, const std::wstring& capability_name) {
DeriveCapabilitySidsFromNameFunc derive_capability_sids =
GetDeriveCapabilitySidsFromName();
CHECK(derive_capability_sids);
// Pre-reserve some space for SID deleters.
std::vector<base::win::ScopedLocalAlloc> deleter_list;
deleter_list.reserve(16);
PSID* capability_groups = nullptr;
DWORD capability_group_count = 0;
PSID* capability_sids = nullptr;
DWORD capability_sid_count = 0;
CHECK(derive_capability_sids(capability_name.c_str(), &capability_groups,
&capability_group_count, &capability_sids,
&capability_sid_count));
deleter_list.emplace_back(capability_groups);
deleter_list.emplace_back(capability_sids);
for (DWORD i = 0; i < capability_group_count; ++i) {
deleter_list.emplace_back(capability_groups[i]);
}
for (DWORD i = 0; i < capability_sid_count; ++i) {
deleter_list.emplace_back(capability_sids[i]);
}
CHECK_GE(capability_sid_count, 1U);
return sid.Equal(capability_sids[0]);
}
struct KnownCapabilityTestEntry {
WellKnownCapability capability;
const wchar_t* sddl_sid;
};
struct KnownSidTestEntry {
WellKnownSid sid;
WELL_KNOWN_SID_TYPE well_known_sid;
};
} // namespace
// Tests the creation of a Sid.
TEST(SidTest, Initializers) {
ATL::CSid sid_world = ATL::Sids::World();
PSID sid_world_pointer = const_cast<SID*>(sid_world.GetPSID());
// Check the PSID constructor.
std::optional<Sid> sid_sid_star = Sid::FromPSID(sid_world_pointer);
ASSERT_TRUE(EqualSid(sid_sid_star, sid_world));
char invalid_sid[16] = {};
ASSERT_FALSE(Sid::FromPSID(invalid_sid));
std::optional<Sid> sid_sddl = Sid::FromSddlString(L"S-1-1-0");
ASSERT_TRUE(sid_sddl);
ASSERT_TRUE(EqualSid(sid_sddl, sid_world));
}
TEST(SidTest, KnownCapability) {
const KnownCapabilityTestEntry capabilities[] = {
{WellKnownCapability::kInternetClient, L"S-1-15-3-1"},
{WellKnownCapability::kInternetClientServer, L"S-1-15-3-2"},
{WellKnownCapability::kPrivateNetworkClientServer, L"S-1-15-3-3"},
{WellKnownCapability::kPicturesLibrary, L"S-1-15-3-4"},
{WellKnownCapability::kVideosLibrary, L"S-1-15-3-5"},
{WellKnownCapability::kMusicLibrary, L"S-1-15-3-6"},
{WellKnownCapability::kDocumentsLibrary, L"S-1-15-3-7"},
{WellKnownCapability::kEnterpriseAuthentication, L"S-1-15-3-8"},
{WellKnownCapability::kSharedUserCertificates, L"S-1-15-3-9"},
{WellKnownCapability::kRemovableStorage, L"S-1-15-3-10"},
{WellKnownCapability::kAppointments, L"S-1-15-3-11"},
{WellKnownCapability::kContacts, L"S-1-15-3-12"},
};
for (auto capability : capabilities) {
EXPECT_TRUE(EqualSid(Sid::FromKnownCapability(capability.capability),
capability.sddl_sid))
<< "Known Capability: " << capability.sddl_sid;
EXPECT_TRUE(EqualSid(Sid(capability.capability), capability.sddl_sid))
<< "Known Capability: " << capability.sddl_sid;
}
}
TEST(SidTest, NamedCapability) {
if (!GetDeriveCapabilitySidsFromName()) {
GTEST_SKIP()
<< "Platform doesn't support DeriveCapabilitySidsFromName function.";
}
const std::wstring capabilities[] = {L"",
L"InternetClient",
L"InternetClientServer",
L"PrivateNetworkClientServer",
L"PicturesLibrary",
L"VideosLibrary",
L"MusicLibrary",
L"DocumentsLibrary",
L"EnterpriseAuthentication",
L"SharedUserCertificates",
L"RemovableStorage",
L"Appointments",
L"Contacts",
L"registryRead",
L"lpacCryptoServices"};
for (const std::wstring& capability : capabilities) {
EXPECT_TRUE(
EqualNamedCapSid(Sid::FromNamedCapability(capability), capability))
<< "Named Capability: " << capability;
}
}
TEST(SidTest, KnownSids) {
const KnownSidTestEntry known_sids[] = {
{WellKnownSid::kNull, ::WinNullSid},
{WellKnownSid::kWorld, ::WinWorldSid},
{WellKnownSid::kCreatorOwner, ::WinCreatorOwnerSid},
{WellKnownSid::kNetwork, ::WinNetworkSid},
{WellKnownSid::kBatch, ::WinBatchSid},
{WellKnownSid::kInteractive, ::WinInteractiveSid},
{WellKnownSid::kService, ::WinServiceSid},
{WellKnownSid::kAnonymous, ::WinAnonymousSid},
{WellKnownSid::kSelf, ::WinSelfSid},
{WellKnownSid::kAuthenticatedUser, ::WinAuthenticatedUserSid},
{WellKnownSid::kRestricted, ::WinRestrictedCodeSid},
{WellKnownSid::kLocalSystem, ::WinLocalSystemSid},
{WellKnownSid::kLocalService, ::WinLocalServiceSid},
{WellKnownSid::kNetworkService, ::WinNetworkServiceSid},
{WellKnownSid::kBuiltinAdministrators, ::WinBuiltinAdministratorsSid},
{WellKnownSid::kBuiltinUsers, ::WinBuiltinUsersSid},
{WellKnownSid::kBuiltinGuests, ::WinBuiltinGuestsSid},
{WellKnownSid::kUntrustedLabel, ::WinUntrustedLabelSid},
{WellKnownSid::kLowLabel, ::WinLowLabelSid},
{WellKnownSid::kMediumLabel, ::WinMediumLabelSid},
{WellKnownSid::kHighLabel, ::WinHighLabelSid},
{WellKnownSid::kSystemLabel, ::WinSystemLabelSid},
{WellKnownSid::kWriteRestricted, ::WinWriteRestrictedCodeSid},
{WellKnownSid::kCreatorOwnerRights, ::WinCreatorOwnerRightsSid},
{WellKnownSid::kAllApplicationPackages, ::WinBuiltinAnyPackageSid}};
for (auto known_sid : known_sids) {
EXPECT_TRUE(
EqualSid(Sid::FromKnownSid(known_sid.sid), known_sid.well_known_sid))
<< "Known Sid: " << static_cast<int>(known_sid.sid);
EXPECT_TRUE(EqualSid(Sid(known_sid.sid), known_sid.well_known_sid))
<< "Known Sid: " << static_cast<int>(known_sid.sid);
}
EXPECT_TRUE(EqualSid(
Sid::FromKnownSid(WellKnownSid::kAllRestrictedApplicationPackages),
L"S-1-15-2-2"));
}
TEST(SidTest, SddlString) {
std::optional<Sid> sid_sddl = Sid::FromSddlString(L"S-1-1-0");
ASSERT_TRUE(sid_sddl);
std::optional<std::wstring> sddl_str = sid_sddl->ToSddlString();
ASSERT_TRUE(sddl_str);
ASSERT_EQ(L"S-1-1-0", *sddl_str);
ASSERT_FALSE(Sid::FromSddlString(L"X-1-1-0"));
ASSERT_FALSE(Sid::FromSddlString(L""));
}
TEST(SidTest, RandomSid) {
Sid sid1 = Sid::GenerateRandomSid();
Sid sid2 = Sid::GenerateRandomSid();
EXPECT_NE(sid1, sid2);
}
TEST(SidTest, FromIntegrityLevel) {
ASSERT_TRUE(EqualSid(
Sid::FromIntegrityLevel(SECURITY_MANDATORY_UNTRUSTED_RID), L"S-1-16-0"));
ASSERT_TRUE(EqualSid(Sid::FromIntegrityLevel(SECURITY_MANDATORY_LOW_RID),
L"S-1-16-4096"));
ASSERT_TRUE(EqualSid(Sid::FromIntegrityLevel(SECURITY_MANDATORY_MEDIUM_RID),
L"S-1-16-8192"));
ASSERT_TRUE(
EqualSid(Sid::FromIntegrityLevel(SECURITY_MANDATORY_MEDIUM_PLUS_RID),
L"S-1-16-8448"));
ASSERT_TRUE(EqualSid(Sid::FromIntegrityLevel(SECURITY_MANDATORY_HIGH_RID),
L"S-1-16-12288"));
ASSERT_TRUE(EqualSid(Sid::FromIntegrityLevel(SECURITY_MANDATORY_SYSTEM_RID),
L"S-1-16-16384"));
ASSERT_TRUE(EqualSid(Sid::FromIntegrityLevel(1234), L"S-1-16-1234"));
}
TEST(SidTest, FromSddlStringVector) {
ASSERT_TRUE(
TestFromSddlStringVector({L"S-1-1-0", L"S-1-15-2-2", L"S-1-15-3-2"}));
ASSERT_FALSE(
TestFromSddlStringVector({L"S-1-1-0", L"X-1-15-2-2", L"S-1-15-3-2"}));
ASSERT_FALSE(TestFromSddlStringVector({L""}));
ASSERT_TRUE(TestFromSddlStringVector({}));
}
TEST(SidTest, FromNamedCapabilityVector) {
if (!GetDeriveCapabilitySidsFromName()) {
GTEST_SKIP()
<< "Platform doesn't support DeriveCapabilitySidsFromName function.";
}
std::vector<std::wstring> capabilities = {L"",
L"InternetClient",
L"InternetClientServer",
L"PrivateNetworkClientServer",
L"PicturesLibrary",
L"VideosLibrary",
L"MusicLibrary",
L"DocumentsLibrary",
L"EnterpriseAuthentication",
L"SharedUserCertificates",
L"RemovableStorage",
L"Appointments",
L"Contacts",
L"registryRead",
L"lpacCryptoServices"};
ASSERT_TRUE(std::ranges::equal(Sid::FromNamedCapabilityVector(capabilities),
capabilities, EqualNamedCapSid));
EXPECT_EQ(Sid::FromNamedCapabilityVector({}).size(), 0U);
}
TEST(SidTest, FromKnownCapabilityVector) {
ASSERT_TRUE(TestSidVector(
Sid::FromKnownCapabilityVector(
{WellKnownCapability::kInternetClient,
WellKnownCapability::kInternetClientServer,
WellKnownCapability::kPrivateNetworkClientServer,
WellKnownCapability::kPicturesLibrary,
WellKnownCapability::kVideosLibrary,
WellKnownCapability::kMusicLibrary,
WellKnownCapability::kDocumentsLibrary,
WellKnownCapability::kEnterpriseAuthentication,
WellKnownCapability::kSharedUserCertificates,
WellKnownCapability::kRemovableStorage,
WellKnownCapability::kAppointments, WellKnownCapability::kContacts}),
{L"S-1-15-3-1", L"S-1-15-3-2", L"S-1-15-3-3", L"S-1-15-3-4",
L"S-1-15-3-5", L"S-1-15-3-6", L"S-1-15-3-7", L"S-1-15-3-8",
L"S-1-15-3-9", L"S-1-15-3-10", L"S-1-15-3-11", L"S-1-15-3-12"}));
ASSERT_FALSE(TestSidVector(
Sid::FromKnownCapabilityVector({WellKnownCapability::kInternetClient}),
{L"S-1-1-0"}));
}
TEST(SidTest, FromKnownSidVector) {
ASSERT_TRUE(TestSidVector(
Sid::FromKnownSidVector({WellKnownSid::kNull, WellKnownSid::kWorld}),
{L"S-1-0-0", L"S-1-1-0"}));
ASSERT_FALSE(TestSidVector(Sid::FromKnownSidVector({WellKnownSid::kNull}),
{L"S-1-1-0"}));
}
TEST(SidTest, Equal) {
Sid world_sid = Sid::FromKnownSid(WellKnownSid::kWorld);
EXPECT_EQ(world_sid, world_sid);
auto world_sid_sddl = Sid::FromSddlString(L"S-1-1-0");
ASSERT_TRUE(world_sid_sddl);
EXPECT_EQ(world_sid, world_sid_sddl);
EXPECT_EQ(world_sid_sddl, world_sid);
EXPECT_TRUE(world_sid.Equal(world_sid_sddl->GetPSID()));
EXPECT_TRUE(world_sid_sddl->Equal(world_sid.GetPSID()));
Sid null_sid = Sid::FromKnownSid(WellKnownSid::kNull);
EXPECT_NE(world_sid, null_sid);
EXPECT_NE(null_sid, world_sid);
EXPECT_FALSE(world_sid.Equal(null_sid.GetPSID()));
EXPECT_FALSE(null_sid.Equal(world_sid.GetPSID()));
}
TEST(SidTest, Clone) {
Sid world_sid = Sid::FromKnownSid(WellKnownSid::kWorld);
auto world_sid_clone = world_sid.Clone();
EXPECT_NE(world_sid.GetPSID(), world_sid_clone.GetPSID());
EXPECT_EQ(world_sid, world_sid_clone);
}
} // namespace base::win
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