• Max Kellermann's avatar
    db/simple: mount points · e9a85aa4
    Max Kellermann authored
    A SimpleDatabase instance can now "mount" other Database instances at
    certain locations.  This is used to use a new SimpleDatabase instance
    for each storage mount (issued with the "mount" protocol command).
    Each such instance has its own database file, stored in the directory
    that is specified with the "cache_directory" option.
    e9a85aa4
CommandError.cxx 3.72 KB
/*
 * Copyright (C) 2003-2014 The Music Player Daemon Project
 * http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "config.h"
#include "CommandError.hxx"
#include "db/DatabaseError.hxx"
#include "protocol/Result.hxx"
#include "util/Error.hxx"
#include "Log.hxx"

#include <assert.h>
#include <string.h>
#include <errno.h>

CommandResult
print_playlist_result(Client &client, PlaylistResult result)
{
	switch (result) {
	case PlaylistResult::SUCCESS:
		return CommandResult::OK;

	case PlaylistResult::ERRNO:
		command_error(client, ACK_ERROR_SYSTEM, "%s",
			      strerror(errno));
		return CommandResult::ERROR;

	case PlaylistResult::DENIED:
		command_error(client, ACK_ERROR_PERMISSION, "Access denied");
		return CommandResult::ERROR;

	case PlaylistResult::NO_SUCH_SONG:
		command_error(client, ACK_ERROR_NO_EXIST, "No such song");
		return CommandResult::ERROR;

	case PlaylistResult::NO_SUCH_LIST:
		command_error(client, ACK_ERROR_NO_EXIST, "No such playlist");
		return CommandResult::ERROR;

	case PlaylistResult::LIST_EXISTS:
		command_error(client, ACK_ERROR_EXIST,
			      "Playlist already exists");
		return CommandResult::ERROR;

	case PlaylistResult::BAD_NAME:
		command_error(client, ACK_ERROR_ARG,
			      "playlist name is invalid: "
			      "playlist names may not contain slashes,"
			      " newlines or carriage returns");
		return CommandResult::ERROR;

	case PlaylistResult::BAD_RANGE:
		command_error(client, ACK_ERROR_ARG, "Bad song index");
		return CommandResult::ERROR;

	case PlaylistResult::NOT_PLAYING:
		command_error(client, ACK_ERROR_PLAYER_SYNC, "Not playing");
		return CommandResult::ERROR;

	case PlaylistResult::TOO_LARGE:
		command_error(client, ACK_ERROR_PLAYLIST_MAX,
			      "playlist is at the max size");
		return CommandResult::ERROR;

	case PlaylistResult::DISABLED:
		command_error(client, ACK_ERROR_UNKNOWN,
			      "stored playlist support is disabled");
		return CommandResult::ERROR;
	}

	assert(0);
	return CommandResult::ERROR;
}

CommandResult
print_error(Client &client, const Error &error)
{
	assert(error.IsDefined());

	LogError(error);

	if (error.IsDomain(playlist_domain)) {
		return print_playlist_result(client,
					     PlaylistResult(error.GetCode()));
	} else if (error.IsDomain(ack_domain)) {
		command_error(client, (ack)error.GetCode(),
			      "%s", error.GetMessage());
		return CommandResult::ERROR;
#ifdef ENABLE_DATABASE
	} else if (error.IsDomain(db_domain)) {
		switch ((enum db_error)error.GetCode()) {
		case DB_DISABLED:
			command_error(client, ACK_ERROR_NO_EXIST, "%s",
				      error.GetMessage());
			return CommandResult::ERROR;

		case DB_NOT_FOUND:
			command_error(client, ACK_ERROR_NO_EXIST, "Not found");
			return CommandResult::ERROR;

		case DB_CONFLICT:
			command_error(client, ACK_ERROR_ARG, "Conflict");
			return CommandResult::ERROR;
		}
#endif
	} else if (error.IsDomain(errno_domain)) {
		command_error(client, ACK_ERROR_SYSTEM, "%s",
			      strerror(error.GetCode()));
		return CommandResult::ERROR;
	}

	command_error(client, ACK_ERROR_UNKNOWN, "error");
	return CommandResult::ERROR;
}