553 lines
14 KiB
C
553 lines
14 KiB
C
/* wMUD - Yet another MUD codebase by W00d5t0ck
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* Copyright (C) 2012 - Gergely POLONKAI
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*
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* db.c: database handling routines
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <glib.h>
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#include <sqlite3.h>
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#include "world.h"
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#include "main.h"
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#include "db.h"
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#include "players.h"
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#include "configuration.h"
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/**
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* SECTION:db
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* @short_description: Database handling
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* @title: Database handling routines
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*
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* This module handles all the database requests. It currently uses an SQLite3
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* backend, but due to its nature, it could be easily rewritten to use a
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* different (e.g MySQL or PostgreSQL) database.
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*/
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static sqlite3 *dbh = NULL;
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GQuark
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wmud_db_error_quark()
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{
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return g_quark_from_static_string("wmud-db-error");
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}
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/**
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* wmud_db_init:
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* @err: a GError to put error messages in it
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*
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* Initializes the wMUD database system. Checks and opens database files.
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*/
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gboolean
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wmud_db_init(GError **err)
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{
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GString *db_file = g_string_new(WMUD_STATEDIR);
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int sqlite_code;
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g_string_append_printf(db_file, "/%s", active_config->database_file);
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if ((sqlite_code = sqlite3_open(db_file->str, &dbh)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_CANTOPEN, "Can not open databsae file (%s): %s", db_file->str, sqlite3_errmsg(dbh));
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return FALSE;
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}
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return TRUE;
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}
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/**
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* wmud_db_load_players:
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* @err: a GError to put error messages in it
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*
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* Loads all player records from the database
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*/
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gboolean
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wmud_db_load_players(GError **err)
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{
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sqlite3_stmt *sth = NULL;
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int sqlite_code;
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if (dbh == NULL)
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{
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if (err)
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_NOINIT, "Database backend not initialized");
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return FALSE;
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}
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if ((sqlite_code = sqlite3_prepare_v2(dbh, "SELECT id, login, password, email FROM players", -1, &sth, NULL)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad query in wmud_db_load_players(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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while (1)
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{
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sqlite_code = sqlite3_step(sth);
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if (sqlite_code == SQLITE_ROW)
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{
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wmudPlayer *player = g_new0(wmudPlayer, 1);
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player->id = sqlite3_column_int(sth, 0);
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player->player_name = g_strdup((gchar *)sqlite3_column_text(sth, 1));
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player->cpassword = g_strdup((gchar *)sqlite3_column_text(sth, 2));
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player->email = g_strdup((gchar *)sqlite3_column_text(sth, 3));
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loaded player _%s_", player->player_name);
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players = g_slist_prepend(players, player);
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}
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else if (sqlite_code == SQLITE_DONE)
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{
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break;
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}
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else
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Query error in wmud_db_load_players(): %s", sqlite3_errmsg(dbh));
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sqlite3_finalize(sth);
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return FALSE;
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}
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}
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sqlite3_finalize(sth);
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return FALSE;
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}
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/**
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* wmud_db_save_player:
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* @player: the player record to save
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* @err: a GError to put error messages in it
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*
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* Saves a player record to the database backend.
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*
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* Return value: %TRUE on success. Upon failure, %FALSE is returned, and err is
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* set accordingly.
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*/
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gboolean
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wmud_db_save_player(wmudPlayer *player, GError **err)
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{
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sqlite3_stmt *sth = NULL;
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int sqlite_code;
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if (dbh == NULL)
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{
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if (err)
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_NOINIT, "Database backend not initialized");
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return FALSE;
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}
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if ((sqlite_code = sqlite3_prepare_v2(dbh, "INSERT INTO players (id, login, password, email) VALUES (NULL, ?, NULL, ?)", -1, &sth, NULL)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad query in wmud_db_save_player(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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if ((sqlite_code = sqlite3_bind_text(sth, 1, player->player_name, -1, SQLITE_STATIC)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad parameter in wmud_db_save_player(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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if ((sqlite_code = sqlite3_bind_text(sth, 2, player->email, -1, SQLITE_STATIC)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad parameter in wmud_db_save_player(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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if ((sqlite_code = sqlite3_step(sth)) != SQLITE_DONE)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Statement cannot be executed in wmud_db_save_player(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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g_clear_error(err);
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return TRUE;
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}
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gboolean
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wmud_db_load_planes(GSList **planes, GError **err)
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{
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sqlite3_stmt *sth = NULL;
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int sqlite_code;
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loading planes");
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if (dbh == NULL)
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{
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if (err)
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_NOINIT, "Database backend not initialized");
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return FALSE;
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}
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if ((sqlite_code = sqlite3_prepare_v2(dbh, "SELECT id, name FROM planes", -1, &sth, NULL)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad query in wmud_db_load_planes(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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while (1)
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{
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sqlite_code = sqlite3_step(sth);
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if (sqlite_code == SQLITE_ROW)
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{
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wmudPlane *plane = g_new0(wmudPlane, 1);
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plane->id = sqlite3_column_int(sth, 0);
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plane->name = g_strdup((gchar *)sqlite3_column_text(sth, 1));
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loaded plane _%s_", plane->name);
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*planes = g_slist_prepend(*planes, plane);
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}
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else if (sqlite_code == SQLITE_DONE)
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{
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break;
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}
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else
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Query error in wmud_db_load_planes(): %s", sqlite3_errmsg(dbh));
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sqlite3_finalize(sth);
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return FALSE;
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}
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}
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sqlite3_finalize(sth);
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return TRUE;
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}
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gboolean
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wmud_db_load_planets(GSList **planets, GError **err)
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{
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sqlite3_stmt *sth = NULL;
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int sqlite_code;
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loading planets");
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if (dbh == NULL)
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{
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if (err)
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_NOINIT, "Database backend not initialized");
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return FALSE;
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}
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if ((sqlite_code = sqlite3_prepare_v2(dbh, "SELECT id, name FROM planets", -1, &sth, NULL)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad query in wmud_db_load_planets(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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while (1)
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{
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sqlite_code = sqlite3_step(sth);
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if (sqlite_code == SQLITE_ROW)
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{
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wmudPlanet *planet = g_new0(wmudPlanet, 1);
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planet->id = sqlite3_column_int(sth, 0);
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planet->name = g_strdup((gchar *)sqlite3_column_text(sth, 1));
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loaded planet _%s_", planet->name);
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*planets = g_slist_prepend(*planets, planet);
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}
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else if (sqlite_code == SQLITE_DONE)
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{
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break;
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}
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else
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Query error in wmud_db_load_planets(): %s", sqlite3_errmsg(dbh));
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sqlite3_finalize(sth);
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return FALSE;
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}
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}
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sqlite3_finalize(sth);
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return TRUE;
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}
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gboolean
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wmud_db_load_directions(GSList **directions, GError **err)
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{
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sqlite3_stmt *sth = NULL;
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int sqlite_code;
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if (dbh == NULL)
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{
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if (err)
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_NOINIT, "Database backend not initialized");
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return FALSE;
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}
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if ((sqlite_code = sqlite3_prepare_v2(dbh, "SELECT id, short_name, name FROM directions", -1, &sth, NULL)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad query in wmud_db_load_directions(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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while (1)
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{
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sqlite_code = sqlite3_step(sth);
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if (sqlite_code == SQLITE_ROW)
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{
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wmudDirection *dir = g_new0(wmudDirection, 1);
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dir->id = sqlite3_column_int(sth, 0);
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dir->short_name = g_strdup((gchar *)sqlite3_column_text(sth, 1));
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dir->name = g_strdup((gchar *)sqlite3_column_text(sth, 2));
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loaded direction _%s_", dir->name);
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*directions = g_slist_prepend(*directions, dir);
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}
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else if (sqlite_code == SQLITE_DONE)
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{
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break;
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}
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else
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Query error in wmud_db_load_directions(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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}
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sqlite3_finalize(sth);
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return TRUE;
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}
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gboolean
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wmud_db_load_areas(GSList **areas, GError **err)
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{
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sqlite3_stmt *sth = NULL;
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int sqlite_code;
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loading areas");
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if (dbh == NULL)
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{
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if (err)
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_NOINIT, "Database backend not initialized");
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return FALSE;
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}
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if ((sqlite_code = sqlite3_prepare_v2(dbh, "SELECT id, name FROM areas", -1, &sth, NULL)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad query in wmud_db_load_areas(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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while (1)
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{
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sqlite_code = sqlite3_step(sth);
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if (sqlite_code == SQLITE_ROW)
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{
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wmudArea *area = g_new0(wmudArea, 1);
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area->id = sqlite3_column_int(sth, 0);
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area->name = g_strdup((gchar *)sqlite3_column_text(sth, 1));
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loaded area _%s_", area->name);
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*areas = g_slist_prepend(*areas, area);
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}
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else if (sqlite_code == SQLITE_DONE)
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{
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break;
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}
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else
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Query error in wmud_db_load_areas(): %s", sqlite3_errmsg(dbh));
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sqlite3_finalize(sth);
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return FALSE;
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}
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}
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sqlite3_finalize(sth);
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return TRUE;
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}
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gboolean
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wmud_db_load_rooms(GSList **rooms, GError **err)
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{
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sqlite3_stmt *sth = NULL;
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int sqlite_code;
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loading rooms");
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if (dbh == NULL)
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{
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if (err)
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_NOINIT, "Database backend not initialized");
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return FALSE;
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}
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if ((sqlite_code = sqlite3_prepare_v2(dbh, "SELECT id, area, name, distant_description, close_description FROM rooms", -1, &sth, NULL)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad query in wmud_db_load_rooms(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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while (1)
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{
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sqlite_code = sqlite3_step(sth);
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if (sqlite_code == SQLITE_ROW)
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{
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wmudRoom *room = g_new0(wmudRoom, 1);
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room->id = sqlite3_column_int(sth, 0);
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room->area_id = sqlite3_column_int(sth, 1);
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room->name = g_strdup((gchar *)sqlite3_column_text(sth, 2));
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room->distant_description = g_strdup((gchar *)sqlite3_column_text(sth, 3));
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room->close_description = g_strdup((gchar *)sqlite3_column_text(sth, 4));
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loaded room %d/_%s_", room->area_id, room->name);
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*rooms = g_slist_prepend(*rooms, room);
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}
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else if (sqlite_code == SQLITE_DONE)
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{
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break;
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}
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else
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Query error in wmud_db_load_rooms(): %s", sqlite3_errmsg(dbh));
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sqlite3_finalize(sth);
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return FALSE;
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}
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}
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sqlite3_finalize(sth);
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return TRUE;
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}
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gboolean
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wmud_db_load_exits(GSList **exits, GError **err)
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{
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sqlite3_stmt *sth = NULL;
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int sqlite_code;
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loading rooms");
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if (dbh == NULL)
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{
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if (err)
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_NOINIT, "Database backend not initialized");
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return FALSE;
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}
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if ((sqlite_code = sqlite3_prepare_v2(dbh, "SELECT room_id, direction, other_side FROM room_exits", -1, &sth, NULL)) != SQLITE_OK)
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad query in wmud_db_load_exits(): %s", sqlite3_errmsg(dbh));
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return FALSE;
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}
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while (1)
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{
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sqlite_code = sqlite3_step(sth);
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if (sqlite_code == SQLITE_ROW)
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{
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wmudExit *room_exit = g_new0(wmudExit, 1);
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room_exit->source_room_id = sqlite3_column_int(sth, 0);
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room_exit->direction_id = sqlite3_column_int(sth, 1);
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room_exit->destination_room_id = sqlite3_column_int(sth, 2);
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loaded exit %d =%d=> %d", room_exit->source_room_id, room_exit->direction_id, room_exit->destination_room_id);
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*exits = g_slist_prepend(*exits, room_exit);
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}
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else if (sqlite_code == SQLITE_DONE)
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{
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break;
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}
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else
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{
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g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Query error in wmud_db_load_exits(): %s", sqlite3_errmsg(dbh));
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sqlite3_finalize(sth);
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return FALSE;
|
|
}
|
|
}
|
|
|
|
sqlite3_finalize(sth);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
wmud_db_load_planet_planes(GSList **planet_planes, GError **err)
|
|
{
|
|
sqlite3_stmt *sth = NULL;
|
|
int sqlite_code;
|
|
|
|
g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loading rooms");
|
|
if (dbh == NULL)
|
|
{
|
|
if (err)
|
|
g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_NOINIT, "Database backend not initialized");
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
if ((sqlite_code = sqlite3_prepare_v2(dbh, "SELECT planet_id, plane_id FROM planet_planes", -1, &sth, NULL)) != SQLITE_OK)
|
|
{
|
|
g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Bad query in wmud_db_load_planet_planes(): %s", sqlite3_errmsg(dbh));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
while (1)
|
|
{
|
|
sqlite_code = sqlite3_step(sth);
|
|
if (sqlite_code == SQLITE_ROW)
|
|
{
|
|
wmudPlanetPlaneAssoc *planet_plane = g_new0(wmudPlanetPlaneAssoc, 1);
|
|
planet_plane->planet_id = sqlite3_column_int(sth, 0);
|
|
planet_plane->plane_id = sqlite3_column_int(sth, 1);
|
|
|
|
g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Loaded planet-plane association %d <> %d", planet_plane->planet_id, planet_plane->plane_id);
|
|
|
|
*planet_planes = g_slist_prepend(*planet_planes, planet_plane);
|
|
}
|
|
else if (sqlite_code == SQLITE_DONE)
|
|
{
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
g_set_error(err, WMUD_DB_ERROR, WMUD_DB_ERROR_BADQUERY, "Query error in wmud_db_load_exits(): %s", sqlite3_errmsg(dbh));
|
|
sqlite3_finalize(sth);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
sqlite3_finalize(sth);
|
|
|
|
return TRUE;
|
|
}
|
|
|