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cfdcore_psbt.cpp
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// Copyright 2021 CryptoGarage
/**
* @file cfdcore_psbt.cpp
*
* @brief This file is implements Partially Signed Bitcoin Transaction.
*/
#include "cfdcore/cfdcore_psbt.h"
#include <algorithm>
#include <limits>
#include <string>
#include <vector>
#include "cfdcore/cfdcore_address.h"
#include "cfdcore/cfdcore_bytedata.h"
#include "cfdcore/cfdcore_descriptor.h"
#include "cfdcore/cfdcore_exception.h"
#include "cfdcore/cfdcore_hdwallet.h"
#include "cfdcore/cfdcore_key.h"
#include "cfdcore/cfdcore_logger.h"
#include "cfdcore/cfdcore_transaction.h"
#include "cfdcore/cfdcore_util.h"
#include "cfdcore_secp256k1.h" // NOLINT
#include "cfdcore_transaction_internal.h" // NOLINT
#include "cfdcore_wally_util.h" // NOLINT
namespace cfd {
namespace core {
using logger::CfdSourceLocation;
using logger::info;
using logger::warn;
// -----------------------------------------------------------------------------
// File constants
// -----------------------------------------------------------------------------
static const uint8_t kPsbtSeparator = 0; //!< psbt map separator
//! global xpub key size
static const size_t kPsbtGlobalXpubSize = BIP32_SERIALIZED_LEN + 1;
// -----------------------------------------------------------------------------
// Internal
// -----------------------------------------------------------------------------
/**
* @brief set psbt bip32 key map
* @param[in] key_list bip32 key path list
* @param[in] map_obj map object.
*/
static void SetKeyPathMap(
const std::vector<KeyData> &key_list, struct wally_map *map_obj) {
int ret;
for (auto &key : key_list) {
auto key_vec = key.GetPubkey().GetData().GetBytes();
std::vector<uint8_t> fingerprint(4);
auto fp = key.GetFingerprint();
auto path = key.GetChildNumArray();
if (fp.IsEmpty() && path.empty()) {
fingerprint = key.GetPubkey().GetFingerprint().GetBytes();
} else if (fp.GetDataSize() >= 4) {
fingerprint = fp.GetBytes();
}
ret = wally_map_add_keypath_item(
map_obj, key_vec.data(), key_vec.size(), fingerprint.data(), 4,
path.data(), path.size());
if (ret != WALLY_OK) {
wally_map_free(map_obj);
warn(CFD_LOG_SOURCE, "wally_map_add_keypath_item NG[{}]", ret);
throw CfdException(kCfdMemoryFullError, "psbt add keypath error.");
}
}
}
/**
* @brief validate psbt utxo data.
* @param[in] txid utxo txid
* @param[in] vout utxo vout
* @param[in] out_script locking script (script pubkey)
* @param[in] redeem_script redeem script
* @param[in] key_list key list
* @param[out] new_redeem_script output redeem script
* @retval true witness
* @retval false not witness
*/
bool ValidatePsbtUtxo(
const Txid &txid, uint32_t vout, const Script &out_script,
const Script &redeem_script, const std::vector<KeyData> &key_list,
Script *new_redeem_script) {
bool has_check_script = false;
bool is_witness = false;
if (out_script.IsP2pkhScript() || out_script.IsP2wpkhScript()) {
if (!redeem_script.IsEmpty()) {
warn(
CFD_LOG_SOURCE, "pubkey isn't use redeemScript. txid:{},{}",
txid.GetHex(), vout);
throw CfdException(
kCfdIllegalArgumentError, "pubkey isn't use redeemScript.");
}
is_witness = out_script.IsP2wpkhScript();
if (key_list.size() > 1) {
warn(
CFD_LOG_SOURCE, "set many key. using key is one.", txid.GetHex(),
vout);
throw CfdException(
kCfdIllegalArgumentError, "set many key. using key is one.");
} else if (key_list.size() == 1) {
auto pubkey = key_list[0].GetPubkey();
if (is_witness) {
if (!ScriptUtil::CreateP2wpkhLockingScript(pubkey).Equals(
out_script)) {
warn(
CFD_LOG_SOURCE, "unmatch pubkey. txid:{},{}", txid.GetHex(),
vout);
throw CfdException(kCfdIllegalArgumentError, "unmatch pubkey.");
}
} else {
if (!ScriptUtil::CreateP2pkhLockingScript(pubkey).Equals(out_script)) {
warn(
CFD_LOG_SOURCE, "unmatch pubkey. txid:{},{}", txid.GetHex(),
vout);
throw CfdException(kCfdIllegalArgumentError, "unmatch pubkey.");
}
}
}
} else if (out_script.IsP2shScript()) {
if (redeem_script.IsEmpty() || redeem_script.IsP2wpkhScript()) {
if (redeem_script.IsP2wpkhScript()) {
auto p2sh_wpkh_script =
ScriptUtil::CreateP2shLockingScript(redeem_script);
if (!p2sh_wpkh_script.Equals(out_script)) {
warn(
CFD_LOG_SOURCE, "unmatch scriptPubkey. txid:{},{}",
txid.GetHex(), vout);
throw CfdException(
kCfdIllegalArgumentError, "unmatch scriptPubkey.");
}
is_witness = true;
}
if (key_list.size() > 1) {
warn(
CFD_LOG_SOURCE, "set many key. using key is one.", txid.GetHex(),
vout);
throw CfdException(
kCfdIllegalArgumentError, "set many key. using key is one.");
} else if (key_list.size() == 1) {
auto pubkey = key_list[0].GetPubkey();
auto wpkh_script = ScriptUtil::CreateP2wpkhLockingScript(pubkey);
auto sh_script = ScriptUtil::CreateP2shLockingScript(wpkh_script);
if (!sh_script.Equals(out_script)) {
warn(
CFD_LOG_SOURCE, "unmatch pubkey. txid:{},{}", txid.GetHex(),
vout);
throw CfdException(kCfdIllegalArgumentError, "unmatch pubkey.");
}
if (new_redeem_script != nullptr) *new_redeem_script = wpkh_script;
is_witness = true;
}
} else {
Address p2sh_addr(NetType::kMainnet, redeem_script);
Address p2wsh_addr(
NetType::kMainnet, WitnessVersion::kVersion0, redeem_script);
auto wsh_script = p2wsh_addr.GetLockingScript();
auto p2sh_wsh_script = ScriptUtil::CreateP2shLockingScript(wsh_script);
if (p2sh_addr.GetLockingScript().Equals(out_script)) {
has_check_script = true;
} else if (p2sh_wsh_script.Equals(out_script)) {
has_check_script = true;
is_witness = true;
} else {
warn(
CFD_LOG_SOURCE, "unknown scriptPubkey. txid:{},{}", txid.GetHex(),
vout);
throw CfdException(kCfdIllegalArgumentError, "unknown scriptPubkey.");
}
}
} else if (out_script.IsP2wshScript()) {
Address addr(NetType::kMainnet, WitnessVersion::kVersion0, redeem_script);
if (!addr.GetLockingScript().Equals(out_script)) {
warn(
CFD_LOG_SOURCE, "unmatch scriptPubkey. txid:{},{}", txid.GetHex(),
vout);
throw CfdException(kCfdIllegalArgumentError, "unmatch scriptPubkey.");
}
has_check_script = true;
is_witness = true;
} else {
warn(
CFD_LOG_SOURCE, "unknown scriptPubkey. txid:{},{}", txid.GetHex(),
vout);
throw CfdException(kCfdIllegalArgumentError, "unknown scriptPubkey.");
}
if (has_check_script) {
uint32_t count = 0;
std::vector<Pubkey> pubkeys;
if (redeem_script.IsMultisigScript()) {
pubkeys = ScriptUtil::ExtractPubkeysFromMultisigScript(redeem_script);
} else {
auto items = redeem_script.GetElementList();
for (auto item : items) {
if (item.IsBinary() && Pubkey::IsValid(item.GetBinaryData())) {
pubkeys.emplace_back(item.GetBinaryData());
}
}
}
if (!key_list.empty()) {
for (auto key : key_list) {
auto cur_pubkey = key.GetPubkey();
for (auto pubkey : pubkeys) {
if (pubkey.Equals(cur_pubkey)) {
++count;
break;
}
}
}
if (count != key_list.size()) {
warn(
CFD_LOG_SOURCE, "unmatch key count. [{}:{}]", count,
key_list.size());
throw CfdException(kCfdIllegalArgumentError, "psbt key valid error.");
}
}
}
return is_witness;
}
/**
* @brief set input script and key list.
* @param[in,out] input psbt input
* @param[in] is_witness witness flag
* @param[in] redeem_script redeem script
* @param[in] key_list bip32 key list.
* @param[in] locking_script locking script
*/
void SetPsbtTxInScriptAndKeyList(
struct wally_psbt_input *input, bool is_witness,
const Script &redeem_script, const std::vector<KeyData> &key_list,
const Script &locking_script) {
int ret;
if (!redeem_script.IsEmpty()) {
auto script_val = redeem_script.GetData().GetBytes();
if (is_witness && (!redeem_script.IsP2wpkhScript())) {
ret = wally_psbt_input_set_witness_script(
input, script_val.data(), script_val.size());
if (ret != WALLY_OK) {
warn(
CFD_LOG_SOURCE, "wally_psbt_input_set_witness_script NG[{}]", ret);
throw CfdException(
kCfdIllegalArgumentError, "psbt add witness script error.");
}
if (locking_script.IsP2shScript()) {
script_val = ScriptUtil::CreateP2wshLockingScript(redeem_script)
.GetData()
.GetBytes();
} else {
script_val.clear();
}
}
if (!script_val.empty()) {
ret = wally_psbt_input_set_redeem_script(
input, script_val.data(), script_val.size());
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_psbt_input_set_redeem_script NG[{}]", ret);
throw CfdException(
kCfdIllegalArgumentError, "psbt add redeem script error.");
}
}
}
if (!key_list.empty()) {
SetKeyPathMap(key_list, &input->keypaths);
ret = wally_map_sort(&input->keypaths, 0);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_map_sort NG[{}]", ret);
throw CfdException(kCfdInternalError, "psbt input sort keypaths error.");
}
}
}
/**
* @brief compare psbt data.
* @param[in,out] src source buffer
* @param[in] src_len source buffer length
* @param[in] dest destination buffer
* @param[in] dest_len destination buffer length
* @param[in] item_name field name
* @param[in] key key name
* @param[in] ignore_duplicate_error ignore duplicate error
* @retval true match
* @retval false unmatch
*/
bool ComparePsbtData(
uint8_t *src, size_t src_len, const uint8_t *dest, size_t dest_len,
const std::string &item_name, const std::string &key,
bool ignore_duplicate_error) {
bool is_compare = false;
if ((src_len == dest_len) && (memcmp(src, dest, src_len) == 0)) {
is_compare = true;
} else if (ignore_duplicate_error) {
// do nothing
} else {
if (key.empty()) {
warn(CFD_LOG_SOURCE, "psbt {} already exist.", item_name);
} else {
warn(CFD_LOG_SOURCE, "psbt {} already exist. key[{}]", item_name, key);
}
throw CfdException(
kCfdIllegalArgumentError, "psbt " + item_name + " duplicated error.");
}
return is_compare;
}
/**
* @brief match wally tx.
* @param[in] src source
* @param[in] dest destination
* @retval true match
* @retval false unmatch
*/
bool MatchWallyTx(struct wally_tx *src, struct wally_tx *dest) {
std::vector<uint8_t> src_txid(WALLY_TXHASH_LEN);
std::vector<uint8_t> dest_txid(WALLY_TXHASH_LEN);
int ret = wally_tx_get_txid(src, src_txid.data(), src_txid.size());
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_tx_get_txid NG[{}]", ret);
throw CfdException(kCfdIllegalArgumentError, "psbt get txid error.");
}
ret = wally_tx_get_txid(dest, dest_txid.data(), dest_txid.size());
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_tx_get_txid NG[{}]", ret);
throw CfdException(kCfdIllegalArgumentError, "psbt get txid error.");
}
return (src_txid == dest_txid);
}
/**
* @brief merge wally map.
* @param[in,out] src source
* @param[in] dst destination
* @param[in] item_name field name
* @param[in] ignore_duplicate_error ignore duplicate error flag.
*/
void MergeWallyMap(
struct wally_map *src, const struct wally_map *dst,
const std::string &item_name, bool ignore_duplicate_error) {
bool is_find;
int ret;
std::vector<size_t> regist_indexes;
for (size_t dst_idx = 0; dst_idx < dst->num_items; ++dst_idx) {
auto dst_item = &dst->items[dst_idx];
is_find = false;
for (size_t src_idx = 0; src_idx < src->num_items; ++src_idx) {
auto src_item = &src->items[src_idx];
if ((src_item->key_len == dst_item->key_len) &&
(memcmp(src_item->key, dst_item->key, src_item->key_len) == 0)) {
is_find = true;
ByteData key(src_item->key, static_cast<uint32_t>(src_item->key_len));
ComparePsbtData(
src_item->value, src_item->value_len, dst_item->value,
dst_item->value_len, item_name, key.GetHex(),
ignore_duplicate_error);
break;
}
}
if (!is_find) regist_indexes.push_back(dst_idx);
}
if (!regist_indexes.empty()) {
for (auto dst_idx : regist_indexes) {
auto dst_item = &dst->items[dst_idx];
ret = wally_map_add(
src, dst_item->key, dst_item->key_len, dst_item->value,
dst_item->value_len);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_map_add NG[{}]", ret);
throw CfdException(
kCfdMemoryFullError, "psbt add " + item_name + " error.");
}
}
ret = wally_map_sort(src, 0);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_map_sort NG[{}]", ret);
throw CfdException(kCfdInternalError, "psbt sort map error.");
}
}
}
/**
* @brief alloc wally buffer.
* @param[in] source source
* @param[in] length source length
* @return alloc buffer address
*/
uint8_t *AllocWallyBuffer(const uint8_t *source, size_t length) {
wally_malloc_t malloc_func = nullptr;
int ret;
if (malloc_func == nullptr) {
struct wally_operations ops;
memset(&ops, 0, sizeof(ops));
ops.struct_size = sizeof(ops);
ret = wally_get_operations(&ops);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_get_operations NG[{}]", ret);
throw CfdException(kCfdInternalError, "OperationFunctions get error.");
}
malloc_func = ops.malloc_fn;
}
void *addr = malloc_func(length);
if (addr == nullptr) {
warn(CFD_LOG_SOURCE, "wally malloc NG.");
throw CfdException(kCfdMemoryFullError, "malloc error.");
}
memcpy(addr, source, length);
return static_cast<uint8_t *>(addr);
}
/**
* @brief free wally buffer
* @param[in] source buffer
*/
void FreeWallyBuffer(void *source) {
wally_free_t free_func = nullptr;
int ret;
if (free_func == nullptr) {
struct wally_operations ops;
memset(&ops, 0, sizeof(ops));
ops.struct_size = sizeof(ops);
ret = wally_get_operations(&ops);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_get_operations NG[{}]", ret);
throw CfdException(kCfdInternalError, "OperationFunctions get error.");
}
free_func = ops.free_fn;
}
free_func(source);
}
/**
* @brief merge input item.
* @param[in,out] psbt source psbt input.
* @param[in] psbt_dest destination psbt input.
* @param[in] ignore_duplicate_error ignore duplicate error flag
* @param[in] item_name field name
*/
void MergePsbtInputItem(
struct wally_psbt_input *psbt, const struct wally_psbt_input *psbt_dest,
bool ignore_duplicate_error, const std::string &item_name) {
int ret;
if (psbt_dest->utxo != nullptr) {
if (psbt->utxo == nullptr) {
ret = wally_psbt_input_set_utxo(psbt, psbt_dest->utxo);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_psbt_input_set_utxo NG[{}]", ret);
throw CfdException(kCfdIllegalArgumentError, "psbt set utxo error.");
}
} else if (MatchWallyTx(psbt->utxo, psbt_dest->utxo)) {
// match
} else if (ignore_duplicate_error) {
// do nothing
} else {
warn(CFD_LOG_SOURCE, "psbt txin utxo already exist.");
throw CfdException(
kCfdIllegalArgumentError, "psbt txin utxo duplicated error.");
}
}
if (psbt_dest->witness_utxo != nullptr) {
if (psbt->witness_utxo == nullptr) {
ret = wally_psbt_input_set_witness_utxo(psbt, psbt_dest->witness_utxo);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_psbt_input_set_witness_utxo NG[{}]", ret);
throw CfdException(
kCfdIllegalArgumentError, "psbt set witness utxo error.");
}
} else if (
(psbt->witness_utxo->satoshi == psbt_dest->witness_utxo->satoshi) &&
ComparePsbtData(
psbt->witness_utxo->script, psbt->witness_utxo->script_len,
psbt_dest->witness_utxo->script,
psbt_dest->witness_utxo->script_len, item_name, "scriptPubkey",
ignore_duplicate_error)) {
// match
} else if (ignore_duplicate_error) {
// do nothing
} else {
warn(CFD_LOG_SOURCE, "psbt txin witness utxo already exist.");
throw CfdException(
kCfdIllegalArgumentError,
"psbt txin witness utxo duplicated error.");
}
}
if (psbt_dest->sighash > 0) {
if (psbt->sighash == 0) {
psbt->sighash = psbt_dest->sighash;
} else if (psbt->sighash == psbt_dest->sighash) {
// match
} else if (ignore_duplicate_error) {
// do nothing
} else {
std::string field_name = "txin sighashtype";
warn(CFD_LOG_SOURCE, "psbt {} already exist.", field_name);
throw CfdException(
kCfdIllegalArgumentError,
"psbt " + field_name + " duplicated error.");
}
}
if (psbt_dest->redeem_script_len > 0) {
if (psbt->redeem_script_len == 0) {
psbt->redeem_script = AllocWallyBuffer(
psbt_dest->redeem_script, psbt_dest->redeem_script_len);
psbt->redeem_script_len = psbt_dest->redeem_script_len;
} else {
ComparePsbtData(
psbt->redeem_script, psbt->redeem_script_len,
psbt_dest->redeem_script, psbt_dest->redeem_script_len,
"txin redeem script", "", ignore_duplicate_error);
}
}
if (psbt_dest->witness_script_len > 0) {
if (psbt->witness_script_len == 0) {
psbt->witness_script = AllocWallyBuffer(
psbt_dest->witness_script, psbt_dest->witness_script_len);
psbt->witness_script_len = psbt_dest->witness_script_len;
} else {
ComparePsbtData(
psbt->witness_script, psbt->witness_script_len,
psbt_dest->witness_script, psbt_dest->witness_script_len,
"txin witness script", "", ignore_duplicate_error);
}
}
MergeWallyMap(
&psbt->keypaths, &psbt_dest->keypaths, "txin keypaths",
ignore_duplicate_error);
MergeWallyMap(
&psbt->signatures, &psbt_dest->signatures, "txin signatures",
ignore_duplicate_error);
MergeWallyMap(
&psbt->unknowns, &psbt_dest->unknowns, "txin unknowns",
ignore_duplicate_error);
}
/**
* @brief merge output item.
* @param[in,out] psbt source psbt output.
* @param[in] psbt_dest destination psbt output.
* @param[in] ignore_duplicate_error ignore duplicate error flag
*/
void MergePsbtOutputItem(
struct wally_psbt_output *psbt, const struct wally_psbt_output *psbt_dest,
bool ignore_duplicate_error) {
if (psbt_dest->redeem_script_len > 0) {
if (psbt->redeem_script_len == 0) {
psbt->redeem_script = AllocWallyBuffer(
psbt_dest->redeem_script, psbt_dest->redeem_script_len);
psbt->redeem_script_len = psbt_dest->redeem_script_len;
} else {
ComparePsbtData(
psbt->redeem_script, psbt->redeem_script_len,
psbt_dest->redeem_script, psbt_dest->redeem_script_len,
"txout redeem script", "", ignore_duplicate_error);
}
}
if (psbt_dest->witness_script_len > 0) {
if (psbt->witness_script_len == 0) {
psbt->witness_script = AllocWallyBuffer(
psbt_dest->witness_script, psbt_dest->witness_script_len);
psbt->witness_script_len = psbt_dest->witness_script_len;
} else {
ComparePsbtData(
psbt->witness_script, psbt->witness_script_len,
psbt_dest->witness_script, psbt_dest->witness_script_len,
"txout witness script", "", ignore_duplicate_error);
}
}
MergeWallyMap(
&psbt->keypaths, &psbt_dest->keypaths, "txout keypaths",
ignore_duplicate_error);
MergeWallyMap(
&psbt->unknowns, &psbt_dest->unknowns, "txout unknowns",
ignore_duplicate_error);
}
/**
* @brief merge input list.
* @param[in,out] psbt source psbt.
* @param[in] psbt_dest destination psbt.
* @param[in] ignore_duplicate_error ignore duplicate error flag
*/
void MergePsbtInputs(
struct wally_psbt *psbt, const struct wally_psbt *psbt_dest,
bool ignore_duplicate_error) {
bool is_find;
int ret;
std::vector<size_t> append_indexes;
for (size_t dst_idx = 0; dst_idx < psbt_dest->num_inputs; ++dst_idx) {
auto dest_txin = &psbt_dest->tx->inputs[dst_idx];
is_find = false;
for (size_t src_idx = 0; src_idx < psbt->num_inputs; ++src_idx) {
auto src_txin = &psbt->tx->inputs[src_idx];
if ((src_txin->index == dest_txin->index) &&
(memcmp(
src_txin->txhash, dest_txin->txhash,
sizeof(src_txin->txhash)) == 0)) {
is_find = true;
Txid txid(ByteData256(ByteData(
src_txin->txhash,
static_cast<uint32_t>(sizeof(src_txin->txhash)))));
std::string item_key =
txid.GetHex() + "," + std::to_string(src_txin->index);
if (src_txin->sequence == dest_txin->sequence) {
// do nothing
} else if (ignore_duplicate_error) {
// do nothing
} else {
warn(CFD_LOG_SOURCE, "psbt sequence duplicate. [{}]", item_key);
throw CfdException(
kCfdIllegalArgumentError, "psbt sequence duplicate error.");
}
MergePsbtInputItem(
&psbt->inputs[src_idx], &psbt_dest->inputs[dst_idx],
ignore_duplicate_error, item_key);
break;
}
}
if (!is_find) append_indexes.push_back(dst_idx);
}
uint32_t index;
for (auto dst_idx : append_indexes) {
index = static_cast<uint32_t>(psbt->num_inputs);
ret = wally_psbt_add_input_at(
psbt, index, WALLY_PSBT_FLAG_NON_FINAL,
&psbt_dest->tx->inputs[dst_idx]);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_psbt_add_input_at NG[{}]", ret);
throw CfdException(
kCfdMemoryFullError, "psbt add global unkonwns error.");
}
auto dest_txin = &psbt_dest->tx->inputs[dst_idx];
Txid txid(ByteData256(ByteData(
dest_txin->txhash, static_cast<uint32_t>(sizeof(dest_txin->txhash)))));
std::string item_key =
txid.GetHex() + "," + std::to_string(dest_txin->index);
MergePsbtInputItem(
&psbt->inputs[index], &psbt_dest->inputs[dst_idx],
ignore_duplicate_error, item_key);
}
}
/**
* @brief merge output list.
* @param[in,out] psbt source psbt.
* @param[in] psbt_dest destination psbt.
* @param[in] ignore_duplicate_error ignore duplicate error flag
*/
void MergePsbtOutputs(
struct wally_psbt *psbt, const struct wally_psbt *psbt_dest,
bool ignore_duplicate_error) {
bool is_find;
int ret;
std::vector<size_t> append_indexes;
size_t start_idx = 0;
for (size_t dst_idx = 0; dst_idx < psbt_dest->num_outputs; ++dst_idx) {
auto dest_txout = &psbt_dest->tx->outputs[dst_idx];
is_find = false;
for (size_t src_idx = start_idx; src_idx < psbt->num_outputs; ++src_idx) {
auto src_txout = &psbt->tx->outputs[src_idx];
if ((src_txout->satoshi == dest_txout->satoshi) &&
(src_txout->script_len == dest_txout->script_len) &&
(memcmp(
src_txout->script, dest_txout->script,
sizeof(src_txout->script_len)) == 0)) {
is_find = true;
start_idx = src_idx + 1;
MergePsbtOutputItem(
&psbt->outputs[src_idx], &psbt_dest->outputs[dst_idx],
ignore_duplicate_error);
break;
}
}
if (!is_find) append_indexes.push_back(dst_idx);
}
uint32_t index;
for (auto dst_idx : append_indexes) {
index = static_cast<uint32_t>(psbt->num_outputs);
ret = wally_psbt_add_output_at(
psbt, index, 0, &psbt_dest->tx->outputs[dst_idx]);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_psbt_add_output_at NG[{}]", ret);
throw CfdException(
kCfdMemoryFullError, "psbt add global unkonwns error.");
}
MergePsbtOutputItem(
&psbt->outputs[index], &psbt_dest->outputs[dst_idx],
ignore_duplicate_error);
}
}
/**
* @brief merge psbt.
* @param[in] src source psbt
* @param[in] dest destination psbt
* @param[in] ignore_duplicate_error ignore duplicate error
* @return merged psbt
*/
struct wally_psbt *MergePsbt(
const void *src, const void *dest, bool ignore_duplicate_error) {
const struct wally_psbt *psbt_src =
static_cast<const struct wally_psbt *>(src);
const struct wally_psbt *psbt_dest =
static_cast<const struct wally_psbt *>(dest);
if ((psbt_src->tx == nullptr) ||
(psbt_src->num_inputs != psbt_src->tx->num_inputs) ||
(psbt_src->num_outputs != psbt_src->tx->num_outputs)) {
warn(CFD_LOG_SOURCE, "psbt src format error.");
throw CfdException(kCfdIllegalArgumentError, "psbt src format error.");
}
if ((psbt_dest->tx == nullptr) ||
(psbt_dest->num_inputs != psbt_dest->tx->num_inputs) ||
(psbt_dest->num_outputs != psbt_dest->tx->num_outputs)) {
warn(CFD_LOG_SOURCE, "psbt dest format error.");
throw CfdException(kCfdIllegalArgumentError, "psbt dest format error.");
}
struct wally_psbt *psbt = nullptr;
int ret = wally_psbt_clone_alloc(psbt_src, 0, &psbt);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_psbt_clone_alloc NG[{}]", ret);
throw CfdException(kCfdMemoryFullError, "psbt clone error.");
}
try {
if (memcmp(psbt->magic, psbt_dest->magic, sizeof(psbt->magic)) != 0) {
warn(CFD_LOG_SOURCE, "psbt unmatch magic.");
throw CfdException(
kCfdIllegalArgumentError, "psbt unmatch magic error.");
}
if (psbt->version != psbt_dest->version) {
warn(
CFD_LOG_SOURCE, "psbt unmatch version: [{},{}]", psbt->version,
psbt_dest->version);
throw CfdException(
kCfdIllegalArgumentError, "psbt unmatch version error.");
}
MergeWallyMap(
&psbt->unknowns, &psbt_dest->unknowns, "global unknowns",
ignore_duplicate_error);
MergePsbtInputs(psbt, psbt_dest, ignore_duplicate_error);
MergePsbtOutputs(psbt, psbt_dest, ignore_duplicate_error);
} catch (const CfdException &except) {
wally_psbt_free(psbt);
throw except;
}
return psbt;
}
/**
* @brief write psbt output.
* @param[in,out] builder serialize object
* @param[in] output psbt output
*/
static void WritePsbtOutput(
Serializer *builder, const struct wally_psbt_output *output) {
if (output->redeem_script_len != 0) {
builder->AddDirectByte(1);
builder->AddVariableInt(Psbt::kPsbtOutputRedeemScript);
builder->AddVariableBuffer(
output->redeem_script,
static_cast<uint32_t>(output->redeem_script_len));
}
if (output->witness_script_len != 0) {
builder->AddDirectByte(1);
builder->AddVariableInt(Psbt::kPsbtOutputWitnessScript);
builder->AddVariableBuffer(
output->witness_script,
static_cast<uint32_t>(output->witness_script_len));
}
for (size_t i = 0; i < output->keypaths.num_items; ++i) {
auto *item = &output->keypaths.items[i];
builder->AddPrefixBuffer(
Psbt::kPsbtOutputBip32Derivation, item->key,
static_cast<uint32_t>(item->key_len));
builder->AddVariableBuffer(
item->value, static_cast<uint32_t>(item->value_len));
}
for (size_t i = 0; i < output->unknowns.num_items; ++i) {
auto *item = &output->unknowns.items[i];
builder->AddVariableBuffer(
item->key, static_cast<uint32_t>(item->key_len));
builder->AddVariableBuffer(
item->value, static_cast<uint32_t>(item->value_len));
}
builder->AddDirectByte(kPsbtSeparator);
}
/**
* @brief create psbt output only object.
* @param[in] psbt psbt object
* @return psbt binary data.
*/
ByteData CreatePsbtOutputOnlyData(const struct wally_psbt *psbt) {
Serializer builder;
builder.AddDirectBytes(psbt->magic, sizeof(psbt->magic));
builder.AddDirectByte(1);
builder.AddVariableInt(Psbt::kPsbtGlobalUnsignedTx);
auto tx = ConvertBitcoinTxFromWally(psbt->tx, false).GetBytes();
builder.AddVariableBuffer(tx.data(), static_cast<uint32_t>(tx.size()));
if (psbt->version > 0) {
builder.AddDirectByte(1);
builder.AddVariableInt(Psbt::kPsbtGlobalVersion);
std::vector<uint8_t> data(sizeof(psbt->version));
memcpy(data.data(), &psbt->version, data.size());
// TODO(k-matsuzawa) need endian support.
builder.AddVariableBuffer(data.data(), sizeof(psbt->version));
}
for (size_t i = 0; i < psbt->unknowns.num_items; ++i) {
auto *item = &psbt->unknowns.items[i];
builder.AddVariableBuffer(item->key, static_cast<uint32_t>(item->key_len));
builder.AddVariableBuffer(
item->value, static_cast<uint32_t>(item->value_len));
}
builder.AddDirectByte(kPsbtSeparator);
// input is unsupport.
for (size_t i = 0; i < psbt->num_outputs; ++i) {
WritePsbtOutput(&builder, &psbt->outputs[i]);
}
return builder.Output();
}
/**
* @brief find psbt map data.
* @param[in] map_object map
* @param[in] key key data
* @param[in] field_name field name
* @param[out] index index
*/
static void FindPsbtMap(
const struct wally_map *map_object, const std::vector<uint8_t> &key,
const std::string &field_name, size_t *index = nullptr) {
size_t exist = 0;
int ret = wally_map_find(map_object, key.data(), key.size(), &exist);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_map_find NG[{}]", ret);
throw CfdException(
kCfdInternalError, "psbt find " + field_name + " error.");
}
if ((index == nullptr) && (exist != 0)) {
warn(CFD_LOG_SOURCE, "{} duplicates.", field_name);
throw CfdException(
kCfdIllegalArgumentError, "psbt " + field_name + " duplicates error.");
} else if (index != nullptr) {
if (exist == 0) {
warn(CFD_LOG_SOURCE, "{} not found.", field_name);
throw CfdException(
kCfdIllegalArgumentError,
"psbt " + field_name + " not found error.");
}
*index = exist - 1;
}
}
/**
* @brief set psbt global data.
* @param[in] key key
* @param[in] value value
* @param[in,out] psbt psbt object
* @return key type
*/
static uint8_t SetPsbtGlobal(
const std::vector<uint8_t> &key, const std::vector<uint8_t> &value,
struct wally_psbt *psbt) {
if (psbt == nullptr) {
warn(CFD_LOG_SOURCE, "psbt pointer is null");
throw CfdException(kCfdIllegalStateError, "psbt pointer is null.");
}
int ret;
bool has_key_1byte = (key.size() == 1);
if (key[0] == Psbt::kPsbtGlobalUnsignedTx) {
if (!has_key_1byte) {
warn(CFD_LOG_SOURCE, "psbt invalid key format.");
throw CfdException(
kCfdIllegalArgumentError, "psbt invalid key format error.");
}
warn(CFD_LOG_SOURCE, "setting global tx is not supported.");
throw CfdException(
kCfdIllegalArgumentError,
"psbt setting global tx is not supported error.");
} else if (key[0] == Psbt::kPsbtGlobalVersion) {
if (!has_key_1byte) {
warn(CFD_LOG_SOURCE, "psbt invalid key format.");
throw CfdException(
kCfdIllegalArgumentError, "psbt invalid key format error.");
}
warn(CFD_LOG_SOURCE, "setting global version is not supported.");
throw CfdException(
kCfdIllegalArgumentError,
"psbt setting global version is not supported error.");
} else {
FindPsbtMap(&psbt->unknowns, key, "global unknowns");
ret = wally_map_add(
&psbt->unknowns, key.data(), key.size(), value.data(), value.size());
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_map_add NG[{}]", ret);
throw CfdException(
kCfdIllegalArgumentError, "psbt add global unknowns error.");
}
}
return key[0];
}
/**
* @brief Get psbt global data.
* @param[in] key_data key
* @param[in] psbt psbt object
* @param[out] is_find psbt key find
* @return value
*/
static ByteData GetPsbtGlobal(
const ByteData &key_data, struct wally_psbt *psbt, bool *is_find) {
if (psbt == nullptr) {
warn(CFD_LOG_SOURCE, "psbt pointer is null");
throw CfdException(kCfdIllegalStateError, "psbt pointer is null.");
}
if (is_find != nullptr) *is_find = false;
const auto key = key_data.GetBytes();
bool has_key_1byte = (key.size() == 1);
if (key[0] == Psbt::kPsbtGlobalUnsignedTx) {
if (!has_key_1byte) {
warn(CFD_LOG_SOURCE, "psbt invalid key format.");
throw CfdException(
kCfdIllegalArgumentError, "psbt invalid key format error.");
}
if (is_find != nullptr) *is_find = true;
Transaction tx(ConvertBitcoinTxFromWally(psbt->tx, false));
return tx.GetData();
} else if (key[0] == Psbt::kPsbtGlobalVersion) {
if (!has_key_1byte) {
warn(CFD_LOG_SOURCE, "psbt invalid key format.");
throw CfdException(
kCfdIllegalArgumentError, "psbt invalid key format error.");
}
if (is_find != nullptr) *is_find = true;
// TODO(k-matsuzawa) need endian support.
Serializer builder;
builder.AddDirectNumber(psbt->version);
return builder.Output();
} else {
size_t index = 0;
try {
FindPsbtMap(&psbt->unknowns, key, "global unknowns", &index);
if (is_find != nullptr) *is_find = true;
return ByteData(
psbt->unknowns.items[index].value,
static_cast<uint32_t>(psbt->unknowns.items[index].value_len));
} catch (const CfdException &except) {
if ((is_find == nullptr) ||
(except.GetErrorCode() != kCfdIllegalArgumentError)) {
throw except;
}
}
}
return ByteData();
}
/**
* @brief set psbt input data.
* @param[in] key key
* @param[in] value value
* @param[in,out] input psbt input
* @return key type
*/
static uint8_t SetPsbtInput(
const std::vector<uint8_t> &key, const std::vector<uint8_t> &value,
struct wally_psbt_input *input) {
int ret;
bool has_key_1byte = (key.size() == 1);
if (key[0] == Psbt::kPsbtInputNonWitnessUtxo) {
if (!has_key_1byte) {
warn(CFD_LOG_SOURCE, "psbt invalid key format.");
throw CfdException(
kCfdIllegalArgumentError, "psbt invalid key format error.");
}
Transaction tx(value);
struct wally_tx *wally_tx_obj = nullptr;
ret = wally_tx_from_hex(tx.GetHex().c_str(), 0, &wally_tx_obj);
if (ret != WALLY_OK) {
warn(CFD_LOG_SOURCE, "wally_tx_from_hex NG[{}]", ret);
throw CfdException(kCfdIllegalArgumentError, "psbt tx from hex error.");