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-rw-r--r--src/wallet/crypter.cpp2
-rw-r--r--src/wallet/rpcwallet.cpp30
-rw-r--r--src/wallet/test/wallet_tests.cpp1
-rw-r--r--src/wallet/wallet.cpp66
-rw-r--r--src/wallet/wallet.h23
5 files changed, 105 insertions, 17 deletions
diff --git a/src/wallet/crypter.cpp b/src/wallet/crypter.cpp
index 1dc78255f6..a255177e36 100644
--- a/src/wallet/crypter.cpp
+++ b/src/wallet/crypter.cpp
@@ -182,7 +182,7 @@ bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn, bool accept_no
if (!SetCrypted())
return false;
- bool keyPass = false;
+ bool keyPass = mapCryptedKeys.empty(); // Always pass when there are no encrypted keys
bool keyFail = false;
CryptedKeyMap::const_iterator mi = mapCryptedKeys.begin();
for (; mi != mapCryptedKeys.end(); ++mi)
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index b9d993dc9c..9bbbdc6132 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -170,12 +170,18 @@ static UniValue getnewaddress(const JSONRPCRequest& request)
},
}.ToString());
+ // Belt and suspenders check for disabled private keys
if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
throw JSONRPCError(RPC_WALLET_ERROR, "Error: Private keys are disabled for this wallet");
}
LOCK(pwallet->cs_wallet);
+ if (!pwallet->CanGetAddresses()) {
+ throw JSONRPCError(RPC_WALLET_ERROR, "Error: This wallet has no available keys");
+ }
+
+
// Parse the label first so we don't generate a key if there's an error
std::string label;
if (!request.params[0].isNull())
@@ -231,12 +237,17 @@ static UniValue getrawchangeaddress(const JSONRPCRequest& request)
},
}.ToString());
+ // Belt and suspenders check for disabled private keys
if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
throw JSONRPCError(RPC_WALLET_ERROR, "Error: Private keys are disabled for this wallet");
}
LOCK(pwallet->cs_wallet);
+ if (!pwallet->CanGetAddresses(true)) {
+ throw JSONRPCError(RPC_WALLET_ERROR, "Error: This wallet has no available keys");
+ }
+
if (!pwallet->IsLocked()) {
pwallet->TopUpKeyPool();
}
@@ -2578,13 +2589,14 @@ static UniValue loadwallet(const JSONRPCRequest& request)
static UniValue createwallet(const JSONRPCRequest& request)
{
- if (request.fHelp || request.params.size() < 1 || request.params.size() > 2) {
+ if (request.fHelp || request.params.size() < 1 || request.params.size() > 3) {
throw std::runtime_error(
RPCHelpMan{"createwallet",
"\nCreates and loads a new wallet.\n",
{
{"wallet_name", RPCArg::Type::STR, /* opt */ false, /* default_val */ "", "The name for the new wallet. If this is a path, the wallet will be created at the path location."},
{"disable_private_keys", RPCArg::Type::BOOL, /* opt */ true, /* default_val */ "false", "Disable the possibility of private keys (only watchonlys are possible in this mode)."},
+ {"blank", RPCArg::Type::BOOL, /* opt */ true, /* default_val */ "false", "Create a blank wallet. A blank wallet has no keys or HD seed. One can be set using sethdseed."},
},
RPCResult{
"{\n"
@@ -2601,9 +2613,13 @@ static UniValue createwallet(const JSONRPCRequest& request)
std::string error;
std::string warning;
- bool disable_privatekeys = false;
- if (!request.params[1].isNull()) {
- disable_privatekeys = request.params[1].get_bool();
+ uint64_t flags = 0;
+ if (!request.params[1].isNull() && request.params[1].get_bool()) {
+ flags |= WALLET_FLAG_DISABLE_PRIVATE_KEYS;
+ }
+
+ if (!request.params[2].isNull() && request.params[2].get_bool()) {
+ flags |= WALLET_FLAG_BLANK_WALLET;
}
WalletLocation location(request.params[0].get_str());
@@ -2616,7 +2632,7 @@ static UniValue createwallet(const JSONRPCRequest& request)
throw JSONRPCError(RPC_WALLET_ERROR, "Wallet file verification failed: " + error);
}
- std::shared_ptr<CWallet> const wallet = CWallet::CreateWalletFromFile(*g_rpc_interfaces->chain, location, (disable_privatekeys ? (uint64_t)WALLET_FLAG_DISABLE_PRIVATE_KEYS : 0));
+ std::shared_ptr<CWallet> const wallet = CWallet::CreateWalletFromFile(*g_rpc_interfaces->chain, location, flags);
if (!wallet) {
throw JSONRPCError(RPC_WALLET_ERROR, "Wallet creation failed.");
}
@@ -3886,7 +3902,7 @@ UniValue sethdseed(const JSONRPCRequest& request)
LOCK(pwallet->cs_wallet);
// Do not do anything to non-HD wallets
- if (!pwallet->IsHDEnabled()) {
+ if (!pwallet->CanSupportFeature(FEATURE_HD)) {
throw JSONRPCError(RPC_WALLET_ERROR, "Cannot set a HD seed on a non-HD wallet. Start with -upgradewallet in order to upgrade a non-HD wallet to HD");
}
@@ -4190,7 +4206,7 @@ static const CRPCCommand commands[] =
{ "wallet", "addmultisigaddress", &addmultisigaddress, {"nrequired","keys","label","address_type"} },
{ "wallet", "backupwallet", &backupwallet, {"destination"} },
{ "wallet", "bumpfee", &bumpfee, {"txid", "options"} },
- { "wallet", "createwallet", &createwallet, {"wallet_name", "disable_private_keys"} },
+ { "wallet", "createwallet", &createwallet, {"wallet_name", "disable_private_keys", "blank"} },
{ "wallet", "dumpprivkey", &dumpprivkey, {"address"} },
{ "wallet", "dumpwallet", &dumpwallet, {"filename"} },
{ "wallet", "encryptwallet", &encryptwallet, {"passphrase"} },
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp
index c5efd32d77..e674b2faea 100644
--- a/src/wallet/test/wallet_tests.cpp
+++ b/src/wallet/test/wallet_tests.cpp
@@ -452,6 +452,7 @@ BOOST_FIXTURE_TEST_CASE(wallet_disableprivkeys, TestChain100Setup)
{
auto chain = interfaces::MakeChain();
std::shared_ptr<CWallet> wallet = std::make_shared<CWallet>(*chain, WalletLocation(), WalletDatabase::CreateDummy());
+ wallet->SetMinVersion(FEATURE_LATEST);
wallet->SetWalletFlag(WALLET_FLAG_DISABLE_PRIVATE_KEYS);
BOOST_CHECK(!wallet->TopUpKeyPool(1000));
CPubKey pubkey;
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index af93653375..d38c15220f 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -168,6 +168,7 @@ const CWalletTx* CWallet::GetWalletTx(const uint256& hash) const
CPubKey CWallet::GenerateNewKey(WalletBatch &batch, bool internal)
{
assert(!IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
+ assert(!IsWalletFlagSet(WALLET_FLAG_BLANK_WALLET));
AssertLockHeld(cs_wallet); // mapKeyMetadata
bool fCompressed = CanSupportFeature(FEATURE_COMPRPUBKEY); // default to compressed public keys if we want 0.6.0 wallets
@@ -177,7 +178,7 @@ CPubKey CWallet::GenerateNewKey(WalletBatch &batch, bool internal)
int64_t nCreationTime = GetTime();
CKeyMetadata metadata(nCreationTime);
- // use HD key derivation if HD was enabled during wallet creation
+ // use HD key derivation if HD was enabled during wallet creation and a seed is present
if (IsHDEnabled()) {
DeriveNewChildKey(batch, metadata, secret, (CanSupportFeature(FEATURE_HD_SPLIT) ? internal : false));
} else {
@@ -283,6 +284,7 @@ bool CWallet::AddKeyPubKeyWithDB(WalletBatch &batch, const CKey& secret, const C
secret.GetPrivKey(),
mapKeyMetadata[pubkey.GetID()]);
}
+ UnsetWalletFlag(WALLET_FLAG_BLANK_WALLET);
return true;
}
@@ -349,7 +351,11 @@ bool CWallet::AddCScript(const CScript& redeemScript)
{
if (!CCryptoKeyStore::AddCScript(redeemScript))
return false;
- return WalletBatch(*database).WriteCScript(Hash160(redeemScript), redeemScript);
+ if (WalletBatch(*database).WriteCScript(Hash160(redeemScript), redeemScript)) {
+ UnsetWalletFlag(WALLET_FLAG_BLANK_WALLET);
+ return true;
+ }
+ return false;
}
bool CWallet::LoadCScript(const CScript& redeemScript)
@@ -374,7 +380,11 @@ bool CWallet::AddWatchOnly(const CScript& dest)
const CKeyMetadata& meta = m_script_metadata[CScriptID(dest)];
UpdateTimeFirstKey(meta.nCreateTime);
NotifyWatchonlyChanged(true);
- return WalletBatch(*database).WriteWatchOnly(dest, meta);
+ if (WalletBatch(*database).WriteWatchOnly(dest, meta)) {
+ UnsetWalletFlag(WALLET_FLAG_BLANK_WALLET);
+ return true;
+ }
+ return false;
}
bool CWallet::AddWatchOnly(const CScript& dest, int64_t nCreateTime)
@@ -1402,6 +1412,7 @@ void CWallet::SetHDSeed(const CPubKey& seed)
newHdChain.seed_id = seed.GetID();
SetHDChain(newHdChain, false);
NotifyCanGetAddressesChanged();
+ UnsetWalletFlag(WALLET_FLAG_BLANK_WALLET);
}
void CWallet::SetHDChain(const CHDChain& chain, bool memonly)
@@ -1418,6 +1429,30 @@ bool CWallet::IsHDEnabled() const
return !hdChain.seed_id.IsNull();
}
+bool CWallet::CanGenerateKeys()
+{
+ // A wallet can generate keys if it has an HD seed (IsHDEnabled) or it is a non-HD wallet (pre FEATURE_HD)
+ LOCK(cs_wallet);
+ return IsHDEnabled() || !CanSupportFeature(FEATURE_HD);
+}
+
+bool CWallet::CanGetAddresses(bool internal)
+{
+ LOCK(cs_wallet);
+ // Check if the keypool has keys
+ bool keypool_has_keys;
+ if (internal && CanSupportFeature(FEATURE_HD_SPLIT)) {
+ keypool_has_keys = setInternalKeyPool.size() > 0;
+ } else {
+ keypool_has_keys = KeypoolCountExternalKeys() > 0;
+ }
+ // If the keypool doesn't have keys, check if we can generate them
+ if (!keypool_has_keys) {
+ return CanGenerateKeys();
+ }
+ return keypool_has_keys;
+}
+
void CWallet::SetWalletFlag(uint64_t flags)
{
LOCK(cs_wallet);
@@ -1426,6 +1461,14 @@ void CWallet::SetWalletFlag(uint64_t flags)
throw std::runtime_error(std::string(__func__) + ": writing wallet flags failed");
}
+void CWallet::UnsetWalletFlag(uint64_t flag)
+{
+ LOCK(cs_wallet);
+ m_wallet_flags &= ~flag;
+ if (!WalletBatch(*database).WriteWalletFlags(m_wallet_flags))
+ throw std::runtime_error(std::string(__func__) + ": writing wallet flags failed");
+}
+
bool CWallet::IsWalletFlagSet(uint64_t flag)
{
return (m_wallet_flags & flag);
@@ -3103,7 +3146,8 @@ DBErrors CWallet::LoadWallet(bool& fFirstRunRet)
{
LOCK(cs_KeyStore);
// This wallet is in its first run if all of these are empty
- fFirstRunRet = mapKeys.empty() && mapCryptedKeys.empty() && mapWatchKeys.empty() && setWatchOnly.empty() && mapScripts.empty() && !IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS);
+ fFirstRunRet = mapKeys.empty() && mapCryptedKeys.empty() && mapWatchKeys.empty() && setWatchOnly.empty() && mapScripts.empty()
+ && !IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) && !IsWalletFlagSet(WALLET_FLAG_BLANK_WALLET);
}
if (nLoadWalletRet != DBErrors::LOAD_OK)
@@ -3288,7 +3332,7 @@ void CWallet::LoadKeyPool(int64_t nIndex, const CKeyPool &keypool)
bool CWallet::TopUpKeyPool(unsigned int kpSize)
{
- if (IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
+ if (!CanGenerateKeys()) {
return false;
}
{
@@ -3418,7 +3462,7 @@ void CWallet::ReturnKey(int64_t nIndex, bool fInternal, const CPubKey& pubkey)
bool CWallet::GetKeyFromPool(CPubKey& result, bool internal)
{
- if (IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
+ if (!CanGetAddresses(internal)) {
return false;
}
@@ -3619,6 +3663,10 @@ std::set<CTxDestination> CWallet::GetLabelAddresses(const std::string& label) co
bool CReserveKey::GetReservedKey(CPubKey& pubkey, bool internal)
{
+ if (!pwallet->CanGetAddresses(internal)) {
+ return false;
+ }
+
if (nIndex == -1)
{
CKeyPool keypool;
@@ -4072,14 +4120,16 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
if ((wallet_creation_flags & WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
//selective allow to set flags
walletInstance->SetWalletFlag(WALLET_FLAG_DISABLE_PRIVATE_KEYS);
+ } else if (wallet_creation_flags & WALLET_FLAG_BLANK_WALLET) {
+ walletInstance->SetWalletFlag(WALLET_FLAG_BLANK_WALLET);
} else {
// generate a new seed
CPubKey seed = walletInstance->GenerateNewSeed();
walletInstance->SetHDSeed(seed);
- }
+ } // Otherwise, do not generate a new seed
// Top up the keypool
- if (!walletInstance->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) && !walletInstance->TopUpKeyPool()) {
+ if (walletInstance->CanGenerateKeys() && !walletInstance->TopUpKeyPool()) {
InitError(_("Unable to generate initial keys"));
return nullptr;
}
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 9dde7e1f94..c455b7cdad 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -136,9 +136,21 @@ enum WalletFlags : uint64_t {
// will enforce the rule that the wallet can't contain any private keys (only watch-only/pubkeys)
WALLET_FLAG_DISABLE_PRIVATE_KEYS = (1ULL << 32),
+
+ //! Flag set when a wallet contains no HD seed and no private keys, scripts,
+ //! addresses, and other watch only things, and is therefore "blank."
+ //!
+ //! The only function this flag serves is to distinguish a blank wallet from
+ //! a newly created wallet when the wallet database is loaded, to avoid
+ //! initialization that should only happen on first run.
+ //!
+ //! This flag is also a mandatory flag to prevent previous versions of
+ //! bitcoin from opening the wallet, thinking it was newly created, and
+ //! then improperly reinitializing it.
+ WALLET_FLAG_BLANK_WALLET = (1ULL << 33),
};
-static constexpr uint64_t g_known_wallet_flags = WALLET_FLAG_DISABLE_PRIVATE_KEYS;
+static constexpr uint64_t g_known_wallet_flags = WALLET_FLAG_DISABLE_PRIVATE_KEYS | WALLET_FLAG_BLANK_WALLET;
/** A key pool entry */
class CKeyPool
@@ -1132,6 +1144,12 @@ public:
/* Returns true if HD is enabled */
bool IsHDEnabled() const;
+ /* Returns true if the wallet can generate new keys */
+ bool CanGenerateKeys();
+
+ /* Returns true if the wallet can give out new addresses. This means it has keys in the keypool or can generate new keys */
+ bool CanGetAddresses(bool internal = false);
+
/* Generates a new HD seed (will not be activated) */
CPubKey GenerateNewSeed();
@@ -1169,6 +1187,9 @@ public:
/** set a single wallet flag */
void SetWalletFlag(uint64_t flags);
+ /** Unsets a single wallet flag */
+ void UnsetWalletFlag(uint64_t flag);
+
/** check if a certain wallet flag is set */
bool IsWalletFlagSet(uint64_t flag);
generated by cgit v1.2.3 (git 2.26.2) at 2024-09-20 18:52:32 +0000