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backup.cpp
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backup.cpp
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// Copyright (c) 2009-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <config/bitcoin-config.h> // IWYU pragma: keep
#include <chain.h>
#include <clientversion.h>
#include <core_io.h>
#include <hash.h>
#include <interfaces/chain.h>
#include <key_io.h>
#include <merkleblock.h>
#include <rpc/util.h>
#include <script/descriptor.h>
#include <script/script.h>
#include <script/solver.h>
#include <sync.h>
#include <uint256.h>
#include <util/bip32.h>
#include <util/fs.h>
#include <util/time.h>
#include <util/translation.h>
#include <wallet/rpc/util.h>
#include <wallet/wallet.h>
#include <cstdint>
#include <fstream>
#include <tuple>
#include <string>
#include <univalue.h>
using interfaces::FoundBlock;
namespace wallet {
std::string static EncodeDumpString(const std::string &str) {
std::stringstream ret;
for (const unsigned char c : str) {
if (c <= 32 || c >= 128 || c == '%') {
ret << '%' << HexStr({&c, 1});
} else {
ret << c;
}
}
return ret.str();
}
static std::string DecodeDumpString(const std::string &str) {
std::stringstream ret;
for (unsigned int pos = 0; pos < str.length(); pos++) {
unsigned char c = str[pos];
if (c == '%' && pos+2 < str.length()) {
c = (((str[pos+1]>>6)*9+((str[pos+1]-'0')&15)) << 4) |
((str[pos+2]>>6)*9+((str[pos+2]-'0')&15));
pos += 2;
}
ret << c;
}
return ret.str();
}
static bool GetWalletAddressesForKey(const LegacyScriptPubKeyMan* spk_man, const CWallet& wallet, const CKeyID& keyid, std::string& strAddr, std::string& strLabel) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
{
bool fLabelFound = false;
CKey key;
spk_man->GetKey(keyid, key);
for (const auto& dest : GetAllDestinationsForKey(key.GetPubKey())) {
const auto* address_book_entry = wallet.FindAddressBookEntry(dest);
if (address_book_entry) {
if (!strAddr.empty()) {
strAddr += ",";
}
strAddr += EncodeDestination(dest);
strLabel = EncodeDumpString(address_book_entry->GetLabel());
fLabelFound = true;
}
}
if (!fLabelFound) {
strAddr = EncodeDestination(GetDestinationForKey(key.GetPubKey(), wallet.m_default_address_type));
}
return fLabelFound;
}
static const int64_t TIMESTAMP_MIN = 0;
static void RescanWallet(CWallet& wallet, const WalletRescanReserver& reserver, int64_t time_begin = TIMESTAMP_MIN, bool update = true)
{
int64_t scanned_time = wallet.RescanFromTime(time_begin, reserver, update);
if (wallet.IsAbortingRescan()) {
throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted by user.");
} else if (scanned_time > time_begin) {
throw JSONRPCError(RPC_WALLET_ERROR, "Rescan was unable to fully rescan the blockchain. Some transactions may be missing.");
}
}
static void EnsureBlockDataFromTime(const CWallet& wallet, int64_t timestamp)
{
auto& chain{wallet.chain()};
if (!chain.havePruned()) {
return;
}
int height{0};
const bool found{chain.findFirstBlockWithTimeAndHeight(timestamp - TIMESTAMP_WINDOW, 0, FoundBlock().height(height))};
uint256 tip_hash{WITH_LOCK(wallet.cs_wallet, return wallet.GetLastBlockHash())};
if (found && !chain.hasBlocks(tip_hash, height)) {
throw JSONRPCError(RPC_WALLET_ERROR, strprintf("Pruned blocks from height %d required to import keys. Use RPC call getblockchaininfo to determine your pruned height.", height));
}
}
RPCHelpMan importprivkey()
{
return RPCHelpMan{"importprivkey",
"\nAdds a private key (as returned by dumpprivkey) to your wallet. Requires a new wallet backup.\n"
"Hint: use importmulti to import more than one private key.\n"
"\nNote: This call can take over an hour to complete if rescan is true, during that time, other rpc calls\n"
"may report that the imported key exists but related transactions are still missing, leading to temporarily incorrect/bogus balances and unspent outputs until rescan completes.\n"
"The rescan parameter can be set to false if the key was never used to create transactions. If it is set to false,\n"
"but the key was used to create transactions, rescanblockchain needs to be called with the appropriate block range.\n"
"Note: Use \"getwalletinfo\" to query the scanning progress.\n"
"Note: This command is only compatible with legacy wallets. Use \"importdescriptors\" with \"combo(X)\" for descriptor wallets.\n",
{
{"privkey", RPCArg::Type::STR, RPCArg::Optional::NO, "The private key (see dumpprivkey)"},
{"label", RPCArg::Type::STR, RPCArg::DefaultHint{"current label if address exists, otherwise \"\""}, "An optional label"},
{"rescan", RPCArg::Type::BOOL, RPCArg::Default{true}, "Scan the chain and mempool for wallet transactions."},
},
RPCResult{RPCResult::Type::NONE, "", ""},
RPCExamples{
"\nDump a private key\n"
+ HelpExampleCli("dumpprivkey", "\"myaddress\"") +
"\nImport the private key with rescan\n"
+ HelpExampleCli("importprivkey", "\"mykey\"") +
"\nImport using a label and without rescan\n"
+ HelpExampleCli("importprivkey", "\"mykey\" \"testing\" false") +
"\nImport using default blank label and without rescan\n"
+ HelpExampleCli("importprivkey", "\"mykey\" \"\" false") +
"\nAs a JSON-RPC call\n"
+ HelpExampleRpc("importprivkey", "\"mykey\", \"testing\", false")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
if (!pwallet) return UniValue::VNULL;
if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
throw JSONRPCError(RPC_WALLET_ERROR, "Cannot import private keys to a wallet with private keys disabled");
}
EnsureLegacyScriptPubKeyMan(*pwallet, true);
WalletRescanReserver reserver(*pwallet);
bool fRescan = true;
{
LOCK(pwallet->cs_wallet);
EnsureWalletIsUnlocked(*pwallet);
std::string strSecret = request.params[0].get_str();
const std::string strLabel{LabelFromValue(request.params[1])};
// Whether to perform rescan after import
if (!request.params[2].isNull())
fRescan = request.params[2].get_bool();
if (fRescan && pwallet->chain().havePruned()) {
// Exit early and print an error.
// If a block is pruned after this check, we will import the key(s),
// but fail the rescan with a generic error.
throw JSONRPCError(RPC_WALLET_ERROR, "Rescan is disabled when blocks are pruned");
}
if (fRescan && !reserver.reserve()) {
throw JSONRPCError(RPC_WALLET_ERROR, "Wallet is currently rescanning. Abort existing rescan or wait.");
}
CKey key = DecodeSecret(strSecret);
if (!key.IsValid()) throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key encoding");
CPubKey pubkey = key.GetPubKey();
CHECK_NONFATAL(key.VerifyPubKey(pubkey));
CKeyID vchAddress = pubkey.GetID();
{
pwallet->MarkDirty();
// We don't know which corresponding address will be used;
// label all new addresses, and label existing addresses if a
// label was passed.
for (const auto& dest : GetAllDestinationsForKey(pubkey)) {
if (!request.params[1].isNull() || !pwallet->FindAddressBookEntry(dest)) {
pwallet->SetAddressBook(dest, strLabel, AddressPurpose::RECEIVE);
}
}
// Use timestamp of 1 to scan the whole chain
if (!pwallet->ImportPrivKeys({{vchAddress, key}}, 1)) {
throw JSONRPCError(RPC_WALLET_ERROR, "Error adding key to wallet");
}
// Add the wpkh script for this key if possible
if (pubkey.IsCompressed()) {
pwallet->ImportScripts({GetScriptForDestination(WitnessV0KeyHash(vchAddress))}, /*timestamp=*/0);
}
}
}
if (fRescan) {
RescanWallet(*pwallet, reserver);
}
return UniValue::VNULL;
},
};
}
RPCHelpMan importaddress()
{
return RPCHelpMan{"importaddress",
"\nAdds an address or script (in hex) that can be watched as if it were in your wallet but cannot be used to spend. Requires a new wallet backup.\n"
"\nNote: This call can take over an hour to complete if rescan is true, during that time, other rpc calls\n"
"may report that the imported address exists but related transactions are still missing, leading to temporarily incorrect/bogus balances and unspent outputs until rescan completes.\n"
"The rescan parameter can be set to false if the key was never used to create transactions. If it is set to false,\n"
"but the key was used to create transactions, rescanblockchain needs to be called with the appropriate block range.\n"
"If you have the full public key, you should call importpubkey instead of this.\n"
"Hint: use importmulti to import more than one address.\n"
"\nNote: If you import a non-standard raw script in hex form, outputs sending to it will be treated\n"
"as change, and not show up in many RPCs.\n"
"Note: Use \"getwalletinfo\" to query the scanning progress.\n"
"Note: This command is only compatible with legacy wallets. Use \"importdescriptors\" for descriptor wallets.\n",
{
{"address", RPCArg::Type::STR, RPCArg::Optional::NO, "The Bitcoin address (or hex-encoded script)"},
{"label", RPCArg::Type::STR, RPCArg::Default{""}, "An optional label"},
{"rescan", RPCArg::Type::BOOL, RPCArg::Default{true}, "Scan the chain and mempool for wallet transactions."},
{"p2sh", RPCArg::Type::BOOL, RPCArg::Default{false}, "Add the P2SH version of the script as well"},
},
RPCResult{RPCResult::Type::NONE, "", ""},
RPCExamples{
"\nImport an address with rescan\n"
+ HelpExampleCli("importaddress", "\"myaddress\"") +
"\nImport using a label without rescan\n"
+ HelpExampleCli("importaddress", "\"myaddress\" \"testing\" false") +
"\nAs a JSON-RPC call\n"
+ HelpExampleRpc("importaddress", "\"myaddress\", \"testing\", false")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
if (!pwallet) return UniValue::VNULL;
EnsureLegacyScriptPubKeyMan(*pwallet, true);
const std::string strLabel{LabelFromValue(request.params[1])};
// Whether to perform rescan after import
bool fRescan = true;
if (!request.params[2].isNull())
fRescan = request.params[2].get_bool();
if (fRescan && pwallet->chain().havePruned()) {
// Exit early and print an error.
// If a block is pruned after this check, we will import the key(s),
// but fail the rescan with a generic error.
throw JSONRPCError(RPC_WALLET_ERROR, "Rescan is disabled when blocks are pruned");
}
WalletRescanReserver reserver(*pwallet);
if (fRescan && !reserver.reserve()) {
throw JSONRPCError(RPC_WALLET_ERROR, "Wallet is currently rescanning. Abort existing rescan or wait.");
}
// Whether to import a p2sh version, too
bool fP2SH = false;
if (!request.params[3].isNull())
fP2SH = request.params[3].get_bool();
{
LOCK(pwallet->cs_wallet);
CTxDestination dest = DecodeDestination(request.params[0].get_str());
if (IsValidDestination(dest)) {
if (fP2SH) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Cannot use the p2sh flag with an address - use a script instead");
}
if (OutputTypeFromDestination(dest) == OutputType::BECH32M) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Bech32m addresses cannot be imported into legacy wallets");
}
pwallet->MarkDirty();
pwallet->ImportScriptPubKeys(strLabel, {GetScriptForDestination(dest)}, /*have_solving_data=*/false, /*apply_label=*/true, /*timestamp=*/1);
} else if (IsHex(request.params[0].get_str())) {
std::vector<unsigned char> data(ParseHex(request.params[0].get_str()));
CScript redeem_script(data.begin(), data.end());
std::set<CScript> scripts = {redeem_script};
pwallet->ImportScripts(scripts, /*timestamp=*/0);
if (fP2SH) {
scripts.insert(GetScriptForDestination(ScriptHash(redeem_script)));
}
pwallet->ImportScriptPubKeys(strLabel, scripts, /*have_solving_data=*/false, /*apply_label=*/true, /*timestamp=*/1);
} else {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Bitcoin address or script");
}
}
if (fRescan)
{
RescanWallet(*pwallet, reserver);
pwallet->ResubmitWalletTransactions(/*relay=*/false, /*force=*/true);
}
return UniValue::VNULL;
},
};
}
RPCHelpMan importprunedfunds()
{
return RPCHelpMan{"importprunedfunds",
"\nImports funds without rescan. Corresponding address or script must previously be included in wallet. Aimed towards pruned wallets. The end-user is responsible to import additional transactions that subsequently spend the imported outputs or rescan after the point in the blockchain the transaction is included.\n",
{
{"rawtransaction", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "A raw transaction in hex funding an already-existing address in wallet"},
{"txoutproof", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex output from gettxoutproof that contains the transaction"},
},
RPCResult{RPCResult::Type::NONE, "", ""},
RPCExamples{""},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
if (!pwallet) return UniValue::VNULL;
CMutableTransaction tx;
if (!DecodeHexTx(tx, request.params[0].get_str())) {
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed. Make sure the tx has at least one input.");
}
uint256 hashTx = tx.GetHash();
DataStream ssMB{ParseHexV(request.params[1], "proof")};
CMerkleBlock merkleBlock;
ssMB >> merkleBlock;
//Search partial merkle tree in proof for our transaction and index in valid block
std::vector<uint256> vMatch;
std::vector<unsigned int> vIndex;
if (merkleBlock.txn.ExtractMatches(vMatch, vIndex) != merkleBlock.header.hashMerkleRoot) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Something wrong with merkleblock");
}
LOCK(pwallet->cs_wallet);
int height;
if (!pwallet->chain().findAncestorByHash(pwallet->GetLastBlockHash(), merkleBlock.header.GetHash(), FoundBlock().height(height))) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found in chain");
}
std::vector<uint256>::const_iterator it;
if ((it = std::find(vMatch.begin(), vMatch.end(), hashTx)) == vMatch.end()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction given doesn't exist in proof");
}
unsigned int txnIndex = vIndex[it - vMatch.begin()];
CTransactionRef tx_ref = MakeTransactionRef(tx);
if (pwallet->IsMine(*tx_ref)) {
pwallet->AddToWallet(std::move(tx_ref), TxStateConfirmed{merkleBlock.header.GetHash(), height, static_cast<int>(txnIndex)});
return UniValue::VNULL;
}
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "No addresses in wallet correspond to included transaction");
},
};
}
RPCHelpMan removeprunedfunds()
{
return RPCHelpMan{"removeprunedfunds",
"\nDeletes the specified transaction from the wallet. Meant for use with pruned wallets and as a companion to importprunedfunds. This will affect wallet balances.\n",
{
{"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex-encoded id of the transaction you are deleting"},
},
RPCResult{RPCResult::Type::NONE, "", ""},
RPCExamples{
HelpExampleCli("removeprunedfunds", "\"a8d0c0184dde994a09ec054286f1ce581bebf46446a512166eae7628734ea0a5\"") +
"\nAs a JSON-RPC call\n"
+ HelpExampleRpc("removeprunedfunds", "\"a8d0c0184dde994a09ec054286f1ce581bebf46446a512166eae7628734ea0a5\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
if (!pwallet) return UniValue::VNULL;
LOCK(pwallet->cs_wallet);
uint256 hash(ParseHashV(request.params[0], "txid"));
std::vector<uint256> vHash;
vHash.push_back(hash);
if (auto res = pwallet->RemoveTxs(vHash); !res) {
throw JSONRPCError(RPC_WALLET_ERROR, util::ErrorString(res).original);
}
return UniValue::VNULL;
},
};
}
RPCHelpMan importpubkey()
{
return RPCHelpMan{"importpubkey",
"\nAdds a public key (in hex) that can be watched as if it were in your wallet but cannot be used to spend. Requires a new wallet backup.\n"
"Hint: use importmulti to import more than one public key.\n"
"\nNote: This call can take over an hour to complete if rescan is true, during that time, other rpc calls\n"
"may report that the imported pubkey exists but related transactions are still missing, leading to temporarily incorrect/bogus balances and unspent outputs until rescan completes.\n"
"The rescan parameter can be set to false if the key was never used to create transactions. If it is set to false,\n"
"but the key was used to create transactions, rescanblockchain needs to be called with the appropriate block range.\n"
"Note: Use \"getwalletinfo\" to query the scanning progress.\n"
"Note: This command is only compatible with legacy wallets. Use \"importdescriptors\" with \"combo(X)\" for descriptor wallets.\n",
{
{"pubkey", RPCArg::Type::STR, RPCArg::Optional::NO, "The hex-encoded public key"},
{"label", RPCArg::Type::STR, RPCArg::Default{""}, "An optional label"},
{"rescan", RPCArg::Type::BOOL, RPCArg::Default{true}, "Scan the chain and mempool for wallet transactions."},
},
RPCResult{RPCResult::Type::NONE, "", ""},
RPCExamples{
"\nImport a public key with rescan\n"
+ HelpExampleCli("importpubkey", "\"mypubkey\"") +
"\nImport using a label without rescan\n"
+ HelpExampleCli("importpubkey", "\"mypubkey\" \"testing\" false") +
"\nAs a JSON-RPC call\n"
+ HelpExampleRpc("importpubkey", "\"mypubkey\", \"testing\", false")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
if (!pwallet) return UniValue::VNULL;
EnsureLegacyScriptPubKeyMan(*pwallet, true);
const std::string strLabel{LabelFromValue(request.params[1])};
// Whether to perform rescan after import
bool fRescan = true;
if (!request.params[2].isNull())
fRescan = request.params[2].get_bool();
if (fRescan && pwallet->chain().havePruned()) {
// Exit early and print an error.
// If a block is pruned after this check, we will import the key(s),
// but fail the rescan with a generic error.
throw JSONRPCError(RPC_WALLET_ERROR, "Rescan is disabled when blocks are pruned");
}
WalletRescanReserver reserver(*pwallet);
if (fRescan && !reserver.reserve()) {
throw JSONRPCError(RPC_WALLET_ERROR, "Wallet is currently rescanning. Abort existing rescan or wait.");
}
CPubKey pubKey = HexToPubKey(request.params[0].get_str());
{
LOCK(pwallet->cs_wallet);
std::set<CScript> script_pub_keys;
for (const auto& dest : GetAllDestinationsForKey(pubKey)) {
script_pub_keys.insert(GetScriptForDestination(dest));
}
pwallet->MarkDirty();
pwallet->ImportScriptPubKeys(strLabel, script_pub_keys, /*have_solving_data=*/true, /*apply_label=*/true, /*timestamp=*/1);
pwallet->ImportPubKeys({pubKey.GetID()}, {{pubKey.GetID(), pubKey}} , /*key_origins=*/{}, /*add_keypool=*/false, /*internal=*/false, /*timestamp=*/1);
}
if (fRescan)
{
RescanWallet(*pwallet, reserver);
pwallet->ResubmitWalletTransactions(/*relay=*/false, /*force=*/true);
}
return UniValue::VNULL;
},
};
}
RPCHelpMan importwallet()
{
return RPCHelpMan{"importwallet",
"\nImports keys from a wallet dump file (see dumpwallet). Requires a new wallet backup to include imported keys.\n"
"Note: Blockchain and Mempool will be rescanned after a successful import. Use \"getwalletinfo\" to query the scanning progress.\n"
"Note: This command is only compatible with legacy wallets.\n",
{
{"filename", RPCArg::Type::STR, RPCArg::Optional::NO, "The wallet file"},
},
RPCResult{RPCResult::Type::NONE, "", ""},
RPCExamples{
"\nDump the wallet\n"
+ HelpExampleCli("dumpwallet", "\"test\"") +
"\nImport the wallet\n"
+ HelpExampleCli("importwallet", "\"test\"") +
"\nImport using the json rpc call\n"
+ HelpExampleRpc("importwallet", "\"test\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
if (!pwallet) return UniValue::VNULL;
EnsureLegacyScriptPubKeyMan(*pwallet, true);
WalletRescanReserver reserver(*pwallet);
if (!reserver.reserve()) {
throw JSONRPCError(RPC_WALLET_ERROR, "Wallet is currently rescanning. Abort existing rescan or wait.");
}
int64_t nTimeBegin = 0;
bool fGood = true;
{
LOCK(pwallet->cs_wallet);
EnsureWalletIsUnlocked(*pwallet);
std::ifstream file;
file.open(fs::u8path(request.params[0].get_str()), std::ios::in | std::ios::ate);
if (!file.is_open()) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot open wallet dump file");
}
CHECK_NONFATAL(pwallet->chain().findBlock(pwallet->GetLastBlockHash(), FoundBlock().time(nTimeBegin)));
int64_t nFilesize = std::max((int64_t)1, (int64_t)file.tellg());
file.seekg(0, file.beg);
// Use uiInterface.ShowProgress instead of pwallet.ShowProgress because pwallet.ShowProgress has a cancel button tied to AbortRescan which
// we don't want for this progress bar showing the import progress. uiInterface.ShowProgress does not have a cancel button.
pwallet->chain().showProgress(strprintf("%s " + _("Importing…").translated, pwallet->GetDisplayName()), 0, false); // show progress dialog in GUI
std::vector<std::tuple<CKey, int64_t, bool, std::string>> keys;
std::vector<std::pair<CScript, int64_t>> scripts;
while (file.good()) {
pwallet->chain().showProgress("", std::max(1, std::min(50, (int)(((double)file.tellg() / (double)nFilesize) * 100))), false);
std::string line;
std::getline(file, line);
if (line.empty() || line[0] == '#')
continue;
std::vector<std::string> vstr = SplitString(line, ' ');
if (vstr.size() < 2)
continue;
CKey key = DecodeSecret(vstr[0]);
if (key.IsValid()) {
int64_t nTime = ParseISO8601DateTime(vstr[1]);
std::string strLabel;
bool fLabel = true;
for (unsigned int nStr = 2; nStr < vstr.size(); nStr++) {
if (vstr[nStr].front() == '#')
break;
if (vstr[nStr] == "change=1")
fLabel = false;
if (vstr[nStr] == "reserve=1")
fLabel = false;
if (vstr[nStr].substr(0,6) == "label=") {
strLabel = DecodeDumpString(vstr[nStr].substr(6));
fLabel = true;
}
}
nTimeBegin = std::min(nTimeBegin, nTime);
keys.emplace_back(key, nTime, fLabel, strLabel);
} else if(IsHex(vstr[0])) {
std::vector<unsigned char> vData(ParseHex(vstr[0]));
CScript script = CScript(vData.begin(), vData.end());
int64_t birth_time = ParseISO8601DateTime(vstr[1]);
if (birth_time > 0) nTimeBegin = std::min(nTimeBegin, birth_time);
scripts.emplace_back(script, birth_time);
}
}
file.close();
EnsureBlockDataFromTime(*pwallet, nTimeBegin);
// We now know whether we are importing private keys, so we can error if private keys are disabled
if (keys.size() > 0 && pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
pwallet->chain().showProgress("", 100, false); // hide progress dialog in GUI
throw JSONRPCError(RPC_WALLET_ERROR, "Importing wallets is disabled when private keys are disabled");
}
double total = (double)(keys.size() + scripts.size());
double progress = 0;
for (const auto& key_tuple : keys) {
pwallet->chain().showProgress("", std::max(50, std::min(75, (int)((progress / total) * 100) + 50)), false);
const CKey& key = std::get<0>(key_tuple);
int64_t time = std::get<1>(key_tuple);
bool has_label = std::get<2>(key_tuple);
std::string label = std::get<3>(key_tuple);
CPubKey pubkey = key.GetPubKey();
CHECK_NONFATAL(key.VerifyPubKey(pubkey));
CKeyID keyid = pubkey.GetID();
pwallet->WalletLogPrintf("Importing %s...\n", EncodeDestination(PKHash(keyid)));
if (!pwallet->ImportPrivKeys({{keyid, key}}, time)) {
pwallet->WalletLogPrintf("Error importing key for %s\n", EncodeDestination(PKHash(keyid)));
fGood = false;
continue;
}
if (has_label)
pwallet->SetAddressBook(PKHash(keyid), label, AddressPurpose::RECEIVE);
progress++;
}
for (const auto& script_pair : scripts) {
pwallet->chain().showProgress("", std::max(50, std::min(75, (int)((progress / total) * 100) + 50)), false);
const CScript& script = script_pair.first;
int64_t time = script_pair.second;
if (!pwallet->ImportScripts({script}, time)) {
pwallet->WalletLogPrintf("Error importing script %s\n", HexStr(script));
fGood = false;
continue;
}
progress++;
}
pwallet->chain().showProgress("", 100, false); // hide progress dialog in GUI
}
pwallet->chain().showProgress("", 100, false); // hide progress dialog in GUI
RescanWallet(*pwallet, reserver, nTimeBegin, /*update=*/false);
pwallet->MarkDirty();
if (!fGood)
throw JSONRPCError(RPC_WALLET_ERROR, "Error adding some keys/scripts to wallet");
return UniValue::VNULL;
},
};
}
RPCHelpMan dumpprivkey()
{
return RPCHelpMan{"dumpprivkey",
"\nReveals the private key corresponding to 'address'.\n"
"Then the importprivkey can be used with this output\n"
"Note: This command is only compatible with legacy wallets.\n",
{
{"address", RPCArg::Type::STR, RPCArg::Optional::NO, "The bitcoin address for the private key"},
},
RPCResult{
RPCResult::Type::STR, "key", "The private key"
},
RPCExamples{
HelpExampleCli("dumpprivkey", "\"myaddress\"")
+ HelpExampleCli("importprivkey", "\"mykey\"")
+ HelpExampleRpc("dumpprivkey", "\"myaddress\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
const std::shared_ptr<const CWallet> pwallet = GetWalletForJSONRPCRequest(request);
if (!pwallet) return UniValue::VNULL;
const LegacyScriptPubKeyMan& spk_man = EnsureConstLegacyScriptPubKeyMan(*pwallet);
LOCK2(pwallet->cs_wallet, spk_man.cs_KeyStore);
EnsureWalletIsUnlocked(*pwallet);
std::string strAddress = request.params[0].get_str();
CTxDestination dest = DecodeDestination(strAddress);
if (!IsValidDestination(dest)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Bitcoin address");
}
auto keyid = GetKeyForDestination(spk_man, dest);
if (keyid.IsNull()) {
throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to a key");
}
CKey vchSecret;
if (!spk_man.GetKey(keyid, vchSecret)) {
throw JSONRPCError(RPC_WALLET_ERROR, "Private key for address " + strAddress + " is not known");
}
return EncodeSecret(vchSecret);
},
};
}
RPCHelpMan dumpwallet()
{
return RPCHelpMan{"dumpwallet",
"\nDumps all wallet keys in a human-readable format to a server-side file. This does not allow overwriting existing files.\n"
"Imported scripts are included in the dumpfile, but corresponding BIP173 addresses, etc. may not be added automatically by importwallet.\n"
"Note that if your wallet contains keys which are not derived from your HD seed (e.g. imported keys), these are not covered by\n"
"only backing up the seed itself, and must be backed up too (e.g. ensure you back up the whole dumpfile).\n"
"Note: This command is only compatible with legacy wallets.\n",
{
{"filename", RPCArg::Type::STR, RPCArg::Optional::NO, "The filename with path (absolute path recommended)"},
},
RPCResult{
RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::STR, "filename", "The filename with full absolute path"},
}
},
RPCExamples{
HelpExampleCli("dumpwallet", "\"test\"")
+ HelpExampleRpc("dumpwallet", "\"test\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
const std::shared_ptr<const CWallet> pwallet = GetWalletForJSONRPCRequest(request);
if (!pwallet) return UniValue::VNULL;
const CWallet& wallet = *pwallet;
const LegacyScriptPubKeyMan& spk_man = EnsureConstLegacyScriptPubKeyMan(wallet);
// Make sure the results are valid at least up to the most recent block
// the user could have gotten from another RPC command prior to now
wallet.BlockUntilSyncedToCurrentChain();
LOCK(wallet.cs_wallet);
EnsureWalletIsUnlocked(wallet);
fs::path filepath = fs::u8path(request.params[0].get_str());
filepath = fs::absolute(filepath);
/* Prevent arbitrary files from being overwritten. There have been reports
* that users have overwritten wallet files this way:
* https://github.com/bitcoin/bitcoin/issues/9934
* It may also avoid other security issues.
*/
if (fs::exists(filepath)) {
throw JSONRPCError(RPC_INVALID_PARAMETER, filepath.utf8string() + " already exists. If you are sure this is what you want, move it out of the way first");
}
std::ofstream file;
file.open(filepath);
if (!file.is_open())
throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot open wallet dump file");
std::map<CKeyID, int64_t> mapKeyBirth;
wallet.GetKeyBirthTimes(mapKeyBirth);
int64_t block_time = 0;
CHECK_NONFATAL(wallet.chain().findBlock(wallet.GetLastBlockHash(), FoundBlock().time(block_time)));
// Note: To avoid a lock order issue, access to cs_main must be locked before cs_KeyStore.
// So we do the two things in this function that lock cs_main first: GetKeyBirthTimes, and findBlock.
LOCK(spk_man.cs_KeyStore);
const std::map<CKeyID, int64_t>& mapKeyPool = spk_man.GetAllReserveKeys();
std::set<CScriptID> scripts = spk_man.GetCScripts();
// sort time/key pairs
std::vector<std::pair<int64_t, CKeyID> > vKeyBirth;
vKeyBirth.reserve(mapKeyBirth.size());
for (const auto& entry : mapKeyBirth) {
vKeyBirth.emplace_back(entry.second, entry.first);
}
mapKeyBirth.clear();
std::sort(vKeyBirth.begin(), vKeyBirth.end());
// produce output
file << strprintf("# Wallet dump created by %s %s\n", PACKAGE_NAME, FormatFullVersion());
file << strprintf("# * Created on %s\n", FormatISO8601DateTime(GetTime()));
file << strprintf("# * Best block at time of backup was %i (%s),\n", wallet.GetLastBlockHeight(), wallet.GetLastBlockHash().ToString());
file << strprintf("# mined on %s\n", FormatISO8601DateTime(block_time));
file << "\n";
// add the base58check encoded extended master if the wallet uses HD
CKeyID seed_id = spk_man.GetHDChain().seed_id;
if (!seed_id.IsNull())
{
CKey seed;
if (spk_man.GetKey(seed_id, seed)) {
CExtKey masterKey;
masterKey.SetSeed(seed);
file << "# extended private masterkey: " << EncodeExtKey(masterKey) << "\n\n";
}
}
for (std::vector<std::pair<int64_t, CKeyID> >::const_iterator it = vKeyBirth.begin(); it != vKeyBirth.end(); it++) {
const CKeyID &keyid = it->second;
std::string strTime = FormatISO8601DateTime(it->first);
std::string strAddr;
std::string strLabel;
CKey key;
if (spk_man.GetKey(keyid, key)) {
CKeyMetadata metadata;
const auto it{spk_man.mapKeyMetadata.find(keyid)};
if (it != spk_man.mapKeyMetadata.end()) metadata = it->second;
file << strprintf("%s %s ", EncodeSecret(key), strTime);
if (GetWalletAddressesForKey(&spk_man, wallet, keyid, strAddr, strLabel)) {
file << strprintf("label=%s", strLabel);
} else if (keyid == seed_id) {
file << "hdseed=1";
} else if (mapKeyPool.count(keyid)) {
file << "reserve=1";
} else if (metadata.hdKeypath == "s") {
file << "inactivehdseed=1";
} else {
file << "change=1";
}
file << strprintf(" # addr=%s%s\n", strAddr, (metadata.has_key_origin ? " hdkeypath="+WriteHDKeypath(metadata.key_origin.path, /*apostrophe=*/true) : ""));
}
}
file << "\n";
for (const CScriptID &scriptid : scripts) {
CScript script;
std::string create_time = "0";
std::string address = EncodeDestination(ScriptHash(scriptid));
// get birth times for scripts with metadata
auto it = spk_man.m_script_metadata.find(scriptid);
if (it != spk_man.m_script_metadata.end()) {
create_time = FormatISO8601DateTime(it->second.nCreateTime);
}
if(spk_man.GetCScript(scriptid, script)) {
file << strprintf("%s %s script=1", HexStr(script), create_time);
file << strprintf(" # addr=%s\n", address);
}
}
file << "\n";
file << "# End of dump\n";
file.close();
UniValue reply(UniValue::VOBJ);
reply.pushKV("filename", filepath.utf8string());
return reply;
},
};
}
struct ImportData
{
// Input data
std::unique_ptr<CScript> redeemscript; //!< Provided redeemScript; will be moved to `import_scripts` if relevant.
std::unique_ptr<CScript> witnessscript; //!< Provided witnessScript; will be moved to `import_scripts` if relevant.
// Output data
std::set<CScript> import_scripts;
std::map<CKeyID, bool> used_keys; //!< Import these private keys if available (the value indicates whether if the key is required for solvability)
std::map<CKeyID, std::pair<CPubKey, KeyOriginInfo>> key_origins;
};
enum class ScriptContext
{
TOP, //!< Top-level scriptPubKey
P2SH, //!< P2SH redeemScript
WITNESS_V0, //!< P2WSH witnessScript
};
// Analyse the provided scriptPubKey, determining which keys and which redeem scripts from the ImportData struct are needed to spend it, and mark them as used.
// Returns an error string, or the empty string for success.
// NOLINTNEXTLINE(misc-no-recursion)
static std::string RecurseImportData(const CScript& script, ImportData& import_data, const ScriptContext script_ctx)
{
// Use Solver to obtain script type and parsed pubkeys or hashes:
std::vector<std::vector<unsigned char>> solverdata;
TxoutType script_type = Solver(script, solverdata);
switch (script_type) {
case TxoutType::PUBKEY: {
CPubKey pubkey(solverdata[0]);
import_data.used_keys.emplace(pubkey.GetID(), false);
return "";
}
case TxoutType::PUBKEYHASH: {
CKeyID id = CKeyID(uint160(solverdata[0]));
import_data.used_keys[id] = true;
return "";
}
case TxoutType::SCRIPTHASH: {
if (script_ctx == ScriptContext::P2SH) throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Trying to nest P2SH inside another P2SH");
if (script_ctx == ScriptContext::WITNESS_V0) throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Trying to nest P2SH inside a P2WSH");
CHECK_NONFATAL(script_ctx == ScriptContext::TOP);
CScriptID id = CScriptID(uint160(solverdata[0]));
auto subscript = std::move(import_data.redeemscript); // Remove redeemscript from import_data to check for superfluous script later.
if (!subscript) return "missing redeemscript";
if (CScriptID(*subscript) != id) return "redeemScript does not match the scriptPubKey";
import_data.import_scripts.emplace(*subscript);
return RecurseImportData(*subscript, import_data, ScriptContext::P2SH);
}
case TxoutType::MULTISIG: {
for (size_t i = 1; i + 1< solverdata.size(); ++i) {
CPubKey pubkey(solverdata[i]);
import_data.used_keys.emplace(pubkey.GetID(), false);
}
return "";
}
case TxoutType::WITNESS_V0_SCRIPTHASH: {
if (script_ctx == ScriptContext::WITNESS_V0) throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Trying to nest P2WSH inside another P2WSH");
CScriptID id{RIPEMD160(solverdata[0])};
auto subscript = std::move(import_data.witnessscript); // Remove redeemscript from import_data to check for superfluous script later.
if (!subscript) return "missing witnessscript";
if (CScriptID(*subscript) != id) return "witnessScript does not match the scriptPubKey or redeemScript";
if (script_ctx == ScriptContext::TOP) {
import_data.import_scripts.emplace(script); // Special rule for IsMine: native P2WSH requires the TOP script imported (see script/ismine.cpp)
}
import_data.import_scripts.emplace(*subscript);
return RecurseImportData(*subscript, import_data, ScriptContext::WITNESS_V0);
}
case TxoutType::WITNESS_V0_KEYHASH: {
if (script_ctx == ScriptContext::WITNESS_V0) throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Trying to nest P2WPKH inside P2WSH");
CKeyID id = CKeyID(uint160(solverdata[0]));
import_data.used_keys[id] = true;
if (script_ctx == ScriptContext::TOP) {
import_data.import_scripts.emplace(script); // Special rule for IsMine: native P2WPKH requires the TOP script imported (see script/ismine.cpp)
}
return "";
}
case TxoutType::NULL_DATA:
return "unspendable script";
case TxoutType::NONSTANDARD:
case TxoutType::WITNESS_UNKNOWN:
case TxoutType::WITNESS_V1_TAPROOT:
return "unrecognized script";
} // no default case, so the compiler can warn about missing cases
NONFATAL_UNREACHABLE();
}
static UniValue ProcessImportLegacy(ImportData& import_data, std::map<CKeyID, CPubKey>& pubkey_map, std::map<CKeyID, CKey>& privkey_map, std::set<CScript>& script_pub_keys, bool& have_solving_data, const UniValue& data, std::vector<CKeyID>& ordered_pubkeys)
{
UniValue warnings(UniValue::VARR);
// First ensure scriptPubKey has either a script or JSON with "address" string
const UniValue& scriptPubKey = data["scriptPubKey"];
bool isScript = scriptPubKey.getType() == UniValue::VSTR;
if (!isScript && !(scriptPubKey.getType() == UniValue::VOBJ && scriptPubKey.exists("address"))) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "scriptPubKey must be string with script or JSON with address string");
}
const std::string& output = isScript ? scriptPubKey.get_str() : scriptPubKey["address"].get_str();
// Optional fields.
const std::string& strRedeemScript = data.exists("redeemscript") ? data["redeemscript"].get_str() : "";
const std::string& witness_script_hex = data.exists("witnessscript") ? data["witnessscript"].get_str() : "";
const UniValue& pubKeys = data.exists("pubkeys") ? data["pubkeys"].get_array() : UniValue();
const UniValue& keys = data.exists("keys") ? data["keys"].get_array() : UniValue();
const bool internal = data.exists("internal") ? data["internal"].get_bool() : false;
const bool watchOnly = data.exists("watchonly") ? data["watchonly"].get_bool() : false;
if (data.exists("range")) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Range should not be specified for a non-descriptor import");
}
// Generate the script and destination for the scriptPubKey provided
CScript script;
if (!isScript) {
CTxDestination dest = DecodeDestination(output);
if (!IsValidDestination(dest)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid address \"" + output + "\"");
}
if (OutputTypeFromDestination(dest) == OutputType::BECH32M) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Bech32m addresses cannot be imported into legacy wallets");
}
script = GetScriptForDestination(dest);
} else {
if (!IsHex(output)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid scriptPubKey \"" + output + "\"");
}
std::vector<unsigned char> vData(ParseHex(output));
script = CScript(vData.begin(), vData.end());
CTxDestination dest;
if (!ExtractDestination(script, dest) && !internal) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Internal must be set to true for nonstandard scriptPubKey imports.");
}
}
script_pub_keys.emplace(script);
// Parse all arguments
if (strRedeemScript.size()) {
if (!IsHex(strRedeemScript)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid redeem script \"" + strRedeemScript + "\": must be hex string");
}
auto parsed_redeemscript = ParseHex(strRedeemScript);
import_data.redeemscript = std::make_unique<CScript>(parsed_redeemscript.begin(), parsed_redeemscript.end());
}
if (witness_script_hex.size()) {
if (!IsHex(witness_script_hex)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid witness script \"" + witness_script_hex + "\": must be hex string");
}
auto parsed_witnessscript = ParseHex(witness_script_hex);
import_data.witnessscript = std::make_unique<CScript>(parsed_witnessscript.begin(), parsed_witnessscript.end());
}
for (size_t i = 0; i < pubKeys.size(); ++i) {
CPubKey pubkey = HexToPubKey(pubKeys[i].get_str());
pubkey_map.emplace(pubkey.GetID(), pubkey);
ordered_pubkeys.push_back(pubkey.GetID());
}
for (size_t i = 0; i < keys.size(); ++i) {
const auto& str = keys[i].get_str();
CKey key = DecodeSecret(str);
if (!key.IsValid()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key encoding");
}
CPubKey pubkey = key.GetPubKey();
CKeyID id = pubkey.GetID();
if (pubkey_map.count(id)) {
pubkey_map.erase(id);
}
privkey_map.emplace(id, key);
}
// Verify and process input data