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// Copyright (c) 2023 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 <common/init.h>
#include <chainparams.h>
#include <fs.h>
#include <tinyformat.h>
#include <util/system.h>
#include <util/translation.h>
#include <algorithm>
#include <exception>
#include <optional>
namespace common {
std::optional<ConfigError> InitConfig(ArgsManager& args, SettingsAbortFn settings_abort_fn)
{
try {
if (!CheckDataDirOption(args)) {
return ConfigError{ConfigStatus::FAILED, strprintf(_("Specified data directory \"%s\" does not exist."), args.GetArg("-datadir", ""))};
}
std::string error;
if (!args.ReadConfigFiles(error, true)) {
return ConfigError{ConfigStatus::FAILED, strprintf(_("Error reading configuration file: %s"), error)};
}
// Check for chain settings (Params() calls are only valid after this clause)
SelectParams(args.GetChainName());
// Create datadir if it does not exist.
const auto base_path{args.GetDataDirBase()};
if (!fs::exists(base_path)) {
// When creating a *new* datadir, also create a "wallets" subdirectory,
// whether or not the wallet is enabled now, so if the wallet is enabled
// in the future, it will use the "wallets" subdirectory for creating
// and listing wallets, rather than the top-level directory where
// wallets could be mixed up with other files. For backwards
// compatibility, wallet code will use the "wallets" subdirectory only
// if it already exists, but never create it itself. There is discussion
// in https://github.com/bitcoin/bitcoin/issues/16220 about ways to
// change wallet code so it would no longer be necessary to create
// "wallets" subdirectories here.
fs::create_directories(base_path / "wallets");
}
const auto net_path{args.GetDataDirNet()};
if (!fs::exists(net_path)) {
fs::create_directories(net_path / "wallets");
}
// Create settings.json if -nosettings was not specified.
if (args.GetSettingsPath()) {
std::vector<std::string> details;
if (!args.ReadSettingsFile(&details)) {
const bilingual_str& message = _("Settings file could not be read");
if (!settings_abort_fn) {
return ConfigError{ConfigStatus::FAILED, message, details};
} else if (settings_abort_fn(message, details)) {
return ConfigError{ConfigStatus::ABORTED, message, details};
} else {
details.clear(); // User chose to ignore the error and proceed.
}
}
if (!args.WriteSettingsFile(&details)) {
const bilingual_str& message = _("Settings file could not be written");
return ConfigError{ConfigStatus::FAILED_WRITE, message, details};
}
}
} catch (const std::exception& e) {
return ConfigError{ConfigStatus::FAILED, Untranslated(e.what())};
}
return {};
}
} // namespace common
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