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// Copyright (c) 2016-2020 The Hush developers
// Distributed under the GPLv3 software license, see the accompanying
// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
#include <gtest/gtest.h>
#include "zcash/Address.hpp"
#include "wallet/wallet.h"
#include "wallet/walletdb.h"
#include "util.h"
#include <boost/filesystem.hpp>
/**
* This test covers Sapling methods on CWallet
* GenerateNewSaplingZKey()
* AddSaplingZKey()
* AddSaplingIncomingViewingKey()
* LoadSaplingZKey()
* LoadSaplingIncomingViewingKey()
* LoadSaplingZKeyMetadata()
*/
TEST(wallet_zkeys_tests, StoreAndLoadSaplingZkeys) {
SelectParams(CBaseChainParams::MAIN);
CWallet wallet;
// wallet should be empty
std::set<libzcash::SaplingPaymentAddress> addrs;
wallet.GetSaplingPaymentAddresses(addrs);
ASSERT_EQ(0, addrs.size());
// No HD seed in the wallet
EXPECT_ANY_THROW(wallet.GenerateNewSaplingZKey());
// Load the all-zeroes seed
CKeyingMaterial rawSeed(32, 0);
HDSeed seed(rawSeed);
wallet.LoadHDSeed(seed);
// Now this call succeeds
auto address = wallet.GenerateNewSaplingZKey();
// wallet should have one key
wallet.GetSaplingPaymentAddresses(addrs);
ASSERT_EQ(1, addrs.size());
// verify wallet has incoming viewing key for the address
ASSERT_TRUE(wallet.HaveSaplingIncomingViewingKey(address));
// manually add new spending key to wallet
auto m = libzcash::SaplingExtendedSpendingKey::Master(seed);
auto sk = m.Derive(0);
ASSERT_TRUE(wallet.AddSaplingZKey(sk, sk.DefaultAddress()));
// verify wallet did add it
auto fvk = sk.expsk.full_viewing_key();
ASSERT_TRUE(wallet.HaveSaplingSpendingKey(fvk));
// verify spending key stored correctly
libzcash::SaplingExtendedSpendingKey keyOut;
wallet.GetSaplingSpendingKey(fvk, keyOut);
ASSERT_EQ(sk, keyOut);
// verify there are two keys
wallet.GetSaplingPaymentAddresses(addrs);
EXPECT_EQ(2, addrs.size());
EXPECT_EQ(1, addrs.count(address));
EXPECT_EQ(1, addrs.count(sk.DefaultAddress()));
// Generate a diversified address different to the default
// If we can't get an early diversified address, we are very unlucky
blob88 diversifier;
diversifier.begin()[0] = 10;
auto dpa = sk.ToXFVK().Address(diversifier).get().second;
// verify wallet only has the default address
EXPECT_TRUE(wallet.HaveSaplingIncomingViewingKey(sk.DefaultAddress()));
EXPECT_FALSE(wallet.HaveSaplingIncomingViewingKey(dpa));
// manually add a diversified address
auto ivk = fvk.in_viewing_key();
EXPECT_TRUE(wallet.AddSaplingIncomingViewingKey(ivk, dpa));
// verify wallet did add it
EXPECT_TRUE(wallet.HaveSaplingIncomingViewingKey(sk.DefaultAddress()));
EXPECT_TRUE(wallet.HaveSaplingIncomingViewingKey(dpa));
// verify that resets nTimeFirstKey, since there is no birthday info for watch-only keys
EXPECT_EQ(wallet.nTimeFirstKey, 1);
// Load a third key into the wallet
auto sk2 = m.Derive(1);
ASSERT_TRUE(wallet.LoadSaplingZKey(sk2));
// attach metadata to this third key
auto ivk2 = sk2.expsk.full_viewing_key().in_viewing_key();
int64_t now = GetTime();
CKeyMetadata meta(now);
ASSERT_TRUE(wallet.LoadSaplingZKeyMetadata(ivk2, meta));
// check metadata is the same
ASSERT_EQ(wallet.mapSaplingZKeyMetadata[ivk2].nCreateTime, now);
// Load a diversified address for the third key into the wallet
auto dpa2 = sk2.ToXFVK().Address(diversifier).get().second;
EXPECT_TRUE(wallet.HaveSaplingIncomingViewingKey(sk2.DefaultAddress()));
EXPECT_FALSE(wallet.HaveSaplingIncomingViewingKey(dpa2));
EXPECT_TRUE(wallet.LoadSaplingPaymentAddress(dpa2, ivk2));
EXPECT_TRUE(wallet.HaveSaplingIncomingViewingKey(dpa2));
}
/**
* This test covers methods on CWalletDB to load/save crypted sapling z keys.
*/
TEST(wallet_zkeys_tests, WriteCryptedSaplingZkeyDirectToDb) {
SelectParams(CBaseChainParams::TESTNET);
// Get temporary and unique path for file.
// Note: / operator to append paths
boost::filesystem::path pathTemp = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();
boost::filesystem::create_directories(pathTemp);
mapArgs["-datadir"] = pathTemp.string();
bool fFirstRun;
CWallet wallet("wallet_crypted_sapling.dat");
ASSERT_EQ(DB_LOAD_OK, wallet.LoadWallet(fFirstRun));
// No default CPubKey set
ASSERT_TRUE(fFirstRun);
ASSERT_FALSE(wallet.HaveHDSeed());
wallet.GenerateNewSeed();
// wallet should be empty
std::set<libzcash::SaplingPaymentAddress> addrs;
wallet.GetSaplingPaymentAddresses(addrs);
ASSERT_EQ(0, addrs.size());
// Add random key to the wallet
auto address = wallet.GenerateNewSaplingZKey();
// wallet should have one key
wallet.GetSaplingPaymentAddresses(addrs);
ASSERT_EQ(1, addrs.size());
// Generate a diversified address different to the default
// If we can't get an early diversified address, we are very unlucky
libzcash::SaplingExtendedSpendingKey extsk;
EXPECT_TRUE(wallet.GetSaplingExtendedSpendingKey(address, extsk));
blob88 diversifier;
diversifier.begin()[0] = 10;
auto dpa = extsk.ToXFVK().Address(diversifier).get().second;
// Add diversified address to the wallet
auto ivk = extsk.expsk.full_viewing_key().in_viewing_key();
EXPECT_TRUE(wallet.AddSaplingIncomingViewingKey(ivk, dpa));
// encrypt wallet
SecureString strWalletPass;
strWalletPass.reserve(100);
strWalletPass = "hello";
ASSERT_TRUE(wallet.EncryptWallet(strWalletPass));
// adding a new key will fail as the wallet is locked
EXPECT_ANY_THROW(wallet.GenerateNewSaplingZKey());
// unlock wallet and then add
wallet.Unlock(strWalletPass);
auto address2 = wallet.GenerateNewSaplingZKey();
// Create a new wallet from the existing wallet path
CWallet wallet2("wallet_crypted_sapling.dat");
ASSERT_EQ(DB_LOAD_OK, wallet2.LoadWallet(fFirstRun));
// Confirm it's not the same as the other wallet
ASSERT_TRUE(&wallet != &wallet2);
ASSERT_TRUE(wallet2.HaveHDSeed());
// wallet should have three addresses
wallet2.GetSaplingPaymentAddresses(addrs);
ASSERT_EQ(3, addrs.size());
//check we have entries for our payment addresses
ASSERT_TRUE(addrs.count(address));
ASSERT_TRUE(addrs.count(address2));
ASSERT_TRUE(addrs.count(dpa));
// spending key is crypted, so we can't extract valid payment address
libzcash::SaplingExtendedSpendingKey keyOut;
EXPECT_FALSE(wallet2.GetSaplingExtendedSpendingKey(address, keyOut));
ASSERT_FALSE(address == keyOut.DefaultAddress());
// address -> ivk mapping is not crypted
libzcash::SaplingIncomingViewingKey ivkOut;
EXPECT_TRUE(wallet2.GetSaplingIncomingViewingKey(dpa, ivkOut));
EXPECT_EQ(ivk, ivkOut);
// unlock wallet to get spending keys and verify payment addresses
wallet2.Unlock(strWalletPass);
EXPECT_TRUE(wallet2.GetSaplingExtendedSpendingKey(address, keyOut));
ASSERT_EQ(address, keyOut.DefaultAddress());
EXPECT_TRUE(wallet2.GetSaplingExtendedSpendingKey(address2, keyOut));
ASSERT_EQ(address2, keyOut.DefaultAddress());
}