363 lines
14 KiB
C++
363 lines
14 KiB
C++
#include <gtest/gtest.h>
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#include <cryfs/config/CryConfigLoader.h>
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#include "../testutils/MockConsole.h"
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#include "../testutils/TestWithFakeHomeDirectory.h"
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#include <cpp-utils/tempfile/TempFile.h>
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#include <cpp-utils/random/Random.h>
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#include <cpp-utils/crypto/symmetric/ciphers.h>
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#include <cpp-utils/data/DataFixture.h>
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#include <cpp-utils/io/NoninteractiveConsole.h>
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#include <gitversion/gitversion.h>
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#include <gitversion/parser.h>
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#include <gitversion/VersionCompare.h>
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using cpputils::TempFile;
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using cpputils::SCrypt;
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using cpputils::DataFixture;
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using cpputils::Data;
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using cpputils::NoninteractiveConsole;
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using boost::optional;
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using boost::none;
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using std::string;
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using std::ostream;
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using std::make_shared;
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using ::testing::Return;
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using ::testing::HasSubstr;
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using ::testing::_;
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using namespace cryfs;
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// This is needed for google test
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namespace boost {
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inline ostream &operator<<(ostream &stream, const CryConfigFile &) {
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return stream << "CryConfigFile()";
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}
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}
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namespace cryfs {
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inline ostream &operator<<(ostream &stream, const CryConfigLoader::ConfigLoadResult &) {
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return stream << "ConfigLoadResult()";
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}
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}
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#include <boost/optional/optional_io.hpp>
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class FakeRandomGenerator final : public cpputils::RandomGenerator {
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public:
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FakeRandomGenerator(Data output)
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: _output(std::move(output)) {}
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void _get(void *target, size_t bytes) override {
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ASSERT_EQ(_output.size(), bytes);
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std::memcpy(target, _output.data(), bytes);
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}
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private:
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Data _output;
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};
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class CryConfigLoaderTest: public ::testing::Test, public TestWithMockConsole, TestWithFakeHomeDirectory {
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public:
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CryConfigLoaderTest(): file(false), tempLocalStateDir(), localStateDir(tempLocalStateDir.path()) {
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console = mockConsole();
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}
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CryConfigLoader loader(const string &password, bool noninteractive, const optional<string> &cipher = none) {
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auto askPassword = [password] { return password;};
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if(noninteractive) {
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return CryConfigLoader(make_shared<NoninteractiveConsole>(console), cpputils::Random::PseudoRandom(), localStateDir, SCrypt::TestSettings, askPassword,
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askPassword, cipher, none, none);
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} else {
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return CryConfigLoader(console, cpputils::Random::PseudoRandom(), localStateDir, SCrypt::TestSettings, askPassword,
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askPassword, cipher, none, none);
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}
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}
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CryConfigFile Create(const string &password = "mypassword", const optional<string> &cipher = none, bool noninteractive = false) {
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EXPECT_FALSE(file.exists());
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return loader(password, noninteractive, cipher).loadOrCreate(file.path(), false, false).value().configFile;
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}
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optional<CryConfigFile> Load(const string &password = "mypassword", const optional<string> &cipher = none, bool noninteractive = false, bool allowFilesystemUpgrade = false) {
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EXPECT_TRUE(file.exists());
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auto loadResult = loader(password, noninteractive, cipher).loadOrCreate(file.path(), allowFilesystemUpgrade, false);
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if (loadResult == none) {
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return none;
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}
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return std::move(loadResult->configFile);
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}
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void CreateWithRootBlob(const string &rootBlob, const string &password = "mypassword") {
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auto cfg = loader(password, false).loadOrCreate(file.path(), false, false).value().configFile;
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cfg.config()->SetRootBlob(rootBlob);
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cfg.save();
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}
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void CreateWithCipher(const string &cipher, const string &password = "mypassword") {
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auto cfg = loader(password, false).loadOrCreate(file.path(), false, false).value().configFile;
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cfg.config()->SetCipher(cipher);
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cfg.save();
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}
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void CreateWithEncryptionKey(const string &encKey, const string &password = "mypassword") {
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auto askPassword = [password] { return password;};
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FakeRandomGenerator generator(Data::FromString(encKey));
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auto loader = CryConfigLoader(console, generator, localStateDir, SCrypt::TestSettings, askPassword,
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askPassword, none, none, none);
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ASSERT_NE(boost::none, loader.loadOrCreate(file.path(), false, false));
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}
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void ChangeEncryptionKey(const string &encKey, const string& password = "mypassword") {
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auto cfg = CryConfigFile::load(file.path(), password).value();
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cfg.config()->SetEncryptionKey(encKey);
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cfg.save();
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}
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void CreateWithVersion(const string &version, const string& formatVersion, const string &password = "mypassword") {
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auto cfg = loader(password, false).loadOrCreate(file.path(), false, false).value().configFile;
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cfg.config()->SetVersion(formatVersion);
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cfg.config()->SetLastOpenedWithVersion(version);
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cfg.config()->SetCreatedWithVersion(version);
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cfg.save();
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}
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void CreateWithFilesystemID(const CryConfig::FilesystemID &filesystemId, const string &password = "mypassword") {
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auto cfg = loader(password, false).loadOrCreate(file.path(), false, false).value().configFile;
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cfg.config()->SetFilesystemId(filesystemId);
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cfg.save();
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}
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void ChangeFilesystemID(const CryConfig::FilesystemID &filesystemId, const string& password = "mypassword") {
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auto cfg = CryConfigFile::load(file.path(), password).value();
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cfg.config()->SetFilesystemId(filesystemId);
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cfg.save();
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}
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string olderVersion() {
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auto versionInfo = gitversion::Parser::parse(CryConfig::FilesystemFormatVersion);
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string olderVersion;
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if (std::stol(versionInfo.minorVersion) > 0) {
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olderVersion = versionInfo.majorVersion + "." + std::to_string(std::stol(versionInfo.minorVersion) - 1);
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} else {
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olderVersion = std::to_string(std::stol(versionInfo.majorVersion) - 1) + "." + versionInfo.minorVersion;
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}
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assert(gitversion::VersionCompare::isOlderThan(olderVersion, CryConfig::FilesystemFormatVersion));
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return olderVersion;
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}
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string newerVersion() {
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string newerVersion = gitversion::MajorVersion()+"."+std::to_string(std::stol(gitversion::MinorVersion())+2);
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EXPECT_TRUE(gitversion::VersionCompare::isOlderThan(CryConfig::FilesystemFormatVersion, newerVersion))
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<< "Format Version " << CryConfig::FilesystemFormatVersion << " should be older than Git Version " << newerVersion;
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return newerVersion;
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}
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std::shared_ptr<MockConsole> console;
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TempFile file;
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cpputils::TempDir tempLocalStateDir;
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LocalStateDir localStateDir;
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};
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TEST_F(CryConfigLoaderTest, CreatesNewIfNotExisting) {
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EXPECT_FALSE(file.exists());
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Create();
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EXPECT_TRUE(file.exists());
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}
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TEST_F(CryConfigLoaderTest, DoesntCrashIfExisting) {
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Create();
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Load();
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}
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TEST_F(CryConfigLoaderTest, DoesntLoadIfWrongPassword) {
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Create("mypassword");
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auto loaded = Load("mypassword2");
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EXPECT_EQ(none, loaded);
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}
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TEST_F(CryConfigLoaderTest, DoesntLoadIfDifferentCipher) {
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Create("mypassword", string("aes-256-gcm"), false);
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try {
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Load("mypassword", string("aes-256-cfb"), false);
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EXPECT_TRUE(false); // Should throw exception
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} catch (const std::runtime_error &e) {
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EXPECT_EQ(string("Filesystem uses aes-256-gcm cipher and not aes-256-cfb as specified."), e.what());
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}
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}
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TEST_F(CryConfigLoaderTest, DoesntLoadIfDifferentCipher_Noninteractive) {
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Create("mypassword", string("aes-256-gcm"), true);
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try {
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Load("mypassword", string("aes-256-cfb"), true);
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EXPECT_TRUE(false); // Should throw exception
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} catch (const std::runtime_error &e) {
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EXPECT_EQ(string("Filesystem uses aes-256-gcm cipher and not aes-256-cfb as specified."), e.what());
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}
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}
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TEST_F(CryConfigLoaderTest, DoesLoadIfSameCipher) {
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Create("mypassword", string("aes-256-gcm"));
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Load("mypassword", string("aes-256-gcm"));
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}
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TEST_F(CryConfigLoaderTest, DoesLoadIfSameCipher_Noninteractive) {
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Create("mypassword", string("aes-128-gcm"), true);
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Load("mypassword", string("aes-128-gcm"), true);
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}
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TEST_F(CryConfigLoaderTest, RootBlob_Load) {
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CreateWithRootBlob("rootblobid");
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auto loaded = Load().value();
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EXPECT_EQ("rootblobid", loaded.config()->RootBlob());
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}
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TEST_F(CryConfigLoaderTest, RootBlob_Create) {
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auto created = Create();
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EXPECT_EQ("", created.config()->RootBlob());
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}
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TEST_F(CryConfigLoaderTest, EncryptionKey_Load) {
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CreateWithEncryptionKey("3B4682CF22F3CA199E385729B9F3CA19D325229E385729B9443CA19D325229E3");
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auto loaded = Load().value();
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EXPECT_EQ("3B4682CF22F3CA199E385729B9F3CA19D325229E385729B9443CA19D325229E3", loaded.config()->EncryptionKey());
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}
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TEST_F(CryConfigLoaderTest, EncryptionKey_Load_whenKeyChanged_thenFails) {
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CreateWithEncryptionKey("3B4682CF22F3CA199E385729B9F3CA19D325229E385729B9443CA19D325229E3");
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ChangeEncryptionKey("3B4682CF22F3CA199E385729B9F3CA19D325229E385729B9443CA19D325229E4");
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EXPECT_THROW(
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Load(),
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std::runtime_error
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);
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}
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TEST_F(CryConfigLoaderTest, EncryptionKey_Create) {
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auto created = Create();
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//aes-256-gcm is the default cipher chosen by mockConsole()
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cpputils::AES256_GCM::EncryptionKey::FromString(created.config()->EncryptionKey()); // This crashes if key is invalid
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}
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TEST_F(CryConfigLoaderTest, Cipher_Load) {
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CreateWithCipher("twofish-128-cfb");
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auto loaded = Load().value();
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EXPECT_EQ("twofish-128-cfb", loaded.config()->Cipher());
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}
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TEST_F(CryConfigLoaderTest, Cipher_Create) {
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auto created = Create();
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//aes-256-gcm is the default cipher chosen by mockConsole()
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EXPECT_EQ("aes-256-gcm", created.config()->Cipher());
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}
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TEST_F(CryConfigLoaderTest, Version_Load) {
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CreateWithVersion("0.9.2", "0.9.2");
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auto loaded = Load().value();
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EXPECT_EQ(CryConfig::FilesystemFormatVersion, loaded.config()->Version());
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EXPECT_EQ(gitversion::VersionString(), loaded.config()->LastOpenedWithVersion());
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EXPECT_EQ("0.9.2", loaded.config()->CreatedWithVersion());
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}
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TEST_F(CryConfigLoaderTest, Version_Load_IsStoredAndNotOnlyOverwrittenInMemoryOnLoad) {
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CreateWithVersion("0.9.2", "0.9.2", "mypassword");
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Load().value();
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auto configFile = CryConfigFile::load(file.path(), "mypassword").value();
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EXPECT_EQ(CryConfig::FilesystemFormatVersion, configFile.config()->Version());
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EXPECT_EQ(gitversion::VersionString(), configFile.config()->LastOpenedWithVersion());
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EXPECT_EQ("0.9.2", configFile.config()->CreatedWithVersion());
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}
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TEST_F(CryConfigLoaderTest, Version_Create) {
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auto created = Create();
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EXPECT_EQ(CryConfig::FilesystemFormatVersion, created.config()->Version());
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EXPECT_EQ(gitversion::VersionString(), created.config()->LastOpenedWithVersion());
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EXPECT_EQ(gitversion::VersionString(), created.config()->CreatedWithVersion());
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}
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TEST_F(CryConfigLoaderTest, FilesystemID_Load) {
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auto fixture = DataFixture::generateFixedSize<CryConfig::FilesystemID::BINARY_LENGTH>();
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CreateWithFilesystemID(fixture);
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auto loaded = Load().value();
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EXPECT_EQ(fixture, loaded.config()->FilesystemId());
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}
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TEST_F(CryConfigLoaderTest, FilesystemID_Create) {
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auto created = Create();
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EXPECT_NE(CryConfig::FilesystemID::Null(), created.config()->FilesystemId());
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}
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TEST_F(CryConfigLoaderTest, AsksWhenLoadingNewerFilesystem_AnswerYes) {
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EXPECT_CALL(*console, askYesNo(HasSubstr("should not be opened with older versions"), false)).Times(1).WillOnce(Return(true));
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string version = newerVersion();
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CreateWithVersion(version, version);
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EXPECT_NE(boost::none, Load());
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}
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TEST_F(CryConfigLoaderTest, AsksWhenLoadingNewerFilesystem_AnswerNo) {
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EXPECT_CALL(*console, askYesNo(HasSubstr("should not be opened with older versions"), false)).Times(1).WillOnce(Return(false));
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string version = newerVersion();
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CreateWithVersion(version, version);
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try {
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Load();
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EXPECT_TRUE(false); // expect throw
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} catch (const std::runtime_error &e) {
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EXPECT_THAT(e.what(), HasSubstr("Please update your CryFS version."));
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}
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}
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TEST_F(CryConfigLoaderTest, AsksWhenMigratingOlderFilesystem) {
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EXPECT_CALL(*console, askYesNo(HasSubstr("Do you want to migrate it?"), false)).Times(1).WillOnce(Return(true));
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string version = olderVersion();
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CreateWithVersion(version, version);
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EXPECT_NE(boost::none, Load());
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}
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TEST_F(CryConfigLoaderTest, DoesNotAskForMigrationWhenCorrectVersion) {
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EXPECT_CALL(*console, askYesNo(HasSubstr("Do you want to migrate it?"), _)).Times(0);
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CreateWithVersion(gitversion::VersionString(), CryConfig::FilesystemFormatVersion);
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EXPECT_NE(boost::none, Load());
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}
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TEST_F(CryConfigLoaderTest, DontMigrateWhenAnsweredNo) {
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EXPECT_CALL(*console, askYesNo(HasSubstr("Do you want to migrate it?"), false)).Times(1).WillOnce(Return(false));
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string version = olderVersion();
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CreateWithVersion(version, version);
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try {
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Load();
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EXPECT_TRUE(false); // expect throw
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} catch (const std::runtime_error &e) {
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EXPECT_THAT(e.what(), HasSubstr("It has to be migrated."));
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}
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}
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TEST_F(CryConfigLoaderTest, MyClientIdIsIndeterministic) {
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TempFile file1(false);
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TempFile file2(false);
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uint32_t myClientId = loader("mypassword", true).loadOrCreate(file1.path(), false, false).value().myClientId;
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EXPECT_NE(myClientId, loader("mypassword", true).loadOrCreate(file2.path(), false, false).value().myClientId);
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}
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TEST_F(CryConfigLoaderTest, MyClientIdIsLoadedCorrectly) {
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TempFile file(false);
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uint32_t myClientId = loader("mypassword", true).loadOrCreate(file.path(), false, false).value().myClientId;
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EXPECT_EQ(myClientId, loader("mypassword", true).loadOrCreate(file.path(), false, false).value().myClientId);
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}
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TEST_F(CryConfigLoaderTest, DoesNotAskForMigrationWhenUpgradesAllowedByProgramArguments_NoninteractiveMode) {
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EXPECT_CALL(*console, askYesNo(HasSubstr("migrate"), _)).Times(0);
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string version = olderVersion();
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CreateWithVersion(version, version);
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EXPECT_NE(boost::none, Load("mypassword", none, true, true));
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}
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TEST_F(CryConfigLoaderTest, DoesNotAskForMigrationWhenUpgradesAllowedByProgramArguments_InteractiveMode) {
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EXPECT_CALL(*console, askYesNo(HasSubstr("migrate"), _)).Times(0);
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string version = olderVersion();
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CreateWithVersion(version, version);
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EXPECT_NE(boost::none, Load("mypassword", none, false, true));
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}
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