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SegWit wallet support

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This introduces two command line flags (-addresstype and -changetype) which control
the type of addresses/outputs created by the GUI and RPCs. Certain RPCs allow
overriding these (`getnewaddress` and `getrawchangeaddress`). Supported types
are "legacy" (P2PKH and P2SH-multisig), "p2sh-segwit" (P2SH-P2WPKH and P2SH-P2WSH-multisig),
and "bech32" (P2WPKH and P2WSH-multisig).

A few utility functions are added to the wallet to construct different address type
and to add the necessary entries to the wallet file to be compatible with earlier
versions (see `CWallet::LearnRelatedScripts`, `GetDestinationForKey`,
`GetAllDestinationsForKey`, `CWallet::AddAndGetDestinationForScript`).
This commit is contained in:
Pieter Wuille
2017-11-30 16:49:11 -08:00
parent f37c64e477
commit 940a21932b
22 changed files with 278 additions and 61 deletions
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12
src/wallet/init.cpp
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@@ -16,6 +16,8 @@
std::string GetWalletHelpString(bool showDebug)
{
std::string strUsage = HelpMessageGroup(_("Wallet options:"));
strUsage += HelpMessageOpt("-addresstype", strprintf(_("What type of addresses to use (\"legacy\", \"p2sh-segwit\", or \"bech32\", default: \"%s\")"), FormatOutputType(OUTPUT_TYPE_DEFAULT)));
strUsage += HelpMessageOpt("-changetype", _("What type of change to use (\"legacy\", \"p2sh-segwit\", or \"bech32\", default is same as -addresstype)"));
strUsage += HelpMessageOpt("-disablewallet", _("Do not load the wallet and disable wallet RPC calls"));
strUsage += HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), DEFAULT_KEYPOOL_SIZE));
strUsage += HelpMessageOpt("-fallbackfee=<amt>", strprintf(_("A fee rate (in %s/kB) that will be used when fee estimation has insufficient data (default: %s)"),
@@ -175,6 +177,16 @@ bool WalletParameterInteraction()
bSpendZeroConfChange = gArgs.GetBoolArg("-spendzeroconfchange", DEFAULT_SPEND_ZEROCONF_CHANGE);
fWalletRbf = gArgs.GetBoolArg("-walletrbf", DEFAULT_WALLET_RBF);
g_address_type = ParseOutputType(gArgs.GetArg("-addresstype", ""));
if (g_address_type == OUTPUT_TYPE_NONE) {
return InitError(strprintf(_("Unknown address type '%s'"), gArgs.GetArg("-addresstype", "")));
}
g_change_type = ParseOutputType(gArgs.GetArg("-changetype", ""), g_address_type);
if (g_change_type == OUTPUT_TYPE_NONE) {
return InitError(strprintf(_("Unknown change type '%s'"), gArgs.GetArg("-changetype", "")));
}
return true;
}