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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2018 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 <outputtype.h>
#include <keystore.h>
#include <pubkey.h>
#include <script/script.h>
#include <script/standard.h>
#include <assert.h>
#include <string>
static const std::string OUTPUT_TYPE_STRING_LEGACY = "legacy";
static const std::string OUTPUT_TYPE_STRING_P2SH_SEGWIT = "p2sh-segwit";
static const std::string OUTPUT_TYPE_STRING_BECH32 = "bech32";
bool ParseOutputType(const std::string& type, OutputType& output_type)
{
if (type == OUTPUT_TYPE_STRING_LEGACY) {
output_type = OutputType::LEGACY;
return true;
} else if (type == OUTPUT_TYPE_STRING_P2SH_SEGWIT) {
output_type = OutputType::P2SH_SEGWIT;
return true;
} else if (type == OUTPUT_TYPE_STRING_BECH32) {
output_type = OutputType::BECH32;
return true;
}
return false;
}
const std::string& FormatOutputType(OutputType type)
{
switch (type) {
case OutputType::LEGACY: return OUTPUT_TYPE_STRING_LEGACY;
case OutputType::P2SH_SEGWIT: return OUTPUT_TYPE_STRING_P2SH_SEGWIT;
case OutputType::BECH32: return OUTPUT_TYPE_STRING_BECH32;
default: assert(false);
}
}
CTxDestination GetDestinationForKey(const CPubKey& key, OutputType type)
{
switch (type) {
case OutputType::LEGACY: return key.GetID();
case OutputType::P2SH_SEGWIT:
case OutputType::BECH32: {
if (!key.IsCompressed()) return key.GetID();
CTxDestination witdest = WitnessV0KeyHash(key.GetID());
CScript witprog = GetScriptForDestination(witdest);
if (type == OutputType::P2SH_SEGWIT) {
return CScriptID(witprog);
} else {
return witdest;
}
}
default: assert(false);
}
}
std::vector<CTxDestination> GetAllDestinationsForKey(const CPubKey& key)
{
CKeyID keyid = key.GetID();
if (key.IsCompressed()) {
CTxDestination segwit = WitnessV0KeyHash(keyid);
CTxDestination p2sh = CScriptID(GetScriptForDestination(segwit));
return std::vector<CTxDestination>{std::move(keyid), std::move(p2sh), std::move(segwit)};
} else {
return std::vector<CTxDestination>{std::move(keyid)};
}
}
CTxDestination AddAndGetDestinationForScript(CKeyStore& keystore, const CScript& script, OutputType type)
{
// Add script to keystore
keystore.AddCScript(script);
// Note that scripts over 520 bytes are not yet supported.
switch (type) {
case OutputType::LEGACY:
return CScriptID(script);
case OutputType::P2SH_SEGWIT:
case OutputType::BECH32: {
CTxDestination witdest = WitnessV0ScriptHash(script);
CScript witprog = GetScriptForDestination(witdest);
// Check if the resulting program is solvable (i.e. doesn't use an uncompressed key)
if (!IsSolvable(keystore, witprog)) return CScriptID(script);
// Add the redeemscript, so that P2WSH and P2SH-P2WSH outputs are recognized as ours.
keystore.AddCScript(witprog);
if (type == OutputType::BECH32) {
return witdest;
} else {
return CScriptID(witprog);
}
}
default: assert(false);
}
}
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