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Diffstat (limited to 'src/database/database-sqlite3.cpp')
| -rw-r--r-- | src/database/database-sqlite3.cpp | 606 |
1 files changed, 606 insertions, 0 deletions
diff --git a/src/database/database-sqlite3.cpp b/src/database/database-sqlite3.cpp new file mode 100644 index 000000000..78c182f86 --- /dev/null +++ b/src/database/database-sqlite3.cpp @@ -0,0 +1,606 @@ +/* +Minetest +Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com> + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser 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. +*/ + +/* +SQLite format specification: + blocks: + (PK) INT id + BLOB data +*/ + + +#include "database-sqlite3.h" + +#include "log.h" +#include "filesys.h" +#include "exceptions.h" +#include "settings.h" +#include "porting.h" +#include "util/string.h" +#include "content_sao.h" +#include "remoteplayer.h" + +#include <cassert> + +// When to print messages when the database is being held locked by another process +// Note: I've seen occasional delays of over 250ms while running minetestmapper. +#define BUSY_INFO_TRESHOLD 100 // Print first informational message after 100ms. +#define BUSY_WARNING_TRESHOLD 250 // Print warning message after 250ms. Lag is increased. +#define BUSY_ERROR_TRESHOLD 1000 // Print error message after 1000ms. Significant lag. +#define BUSY_FATAL_TRESHOLD 3000 // Allow SQLITE_BUSY to be returned, which will cause a minetest crash. +#define BUSY_ERROR_INTERVAL 10000 // Safety net: report again every 10 seconds + + +#define SQLRES(s, r, m) \ + if ((s) != (r)) { \ + throw DatabaseException(std::string(m) + ": " +\ + sqlite3_errmsg(m_database)); \ + } +#define SQLOK(s, m) SQLRES(s, SQLITE_OK, m) + +#define PREPARE_STATEMENT(name, query) \ + SQLOK(sqlite3_prepare_v2(m_database, query, -1, &m_stmt_##name, NULL),\ + "Failed to prepare query '" query "'") + +#define SQLOK_ERRSTREAM(s, m) \ + if ((s) != SQLITE_OK) { \ + errorstream << (m) << ": " \ + << sqlite3_errmsg(m_database) << std::endl; \ + } + +#define FINALIZE_STATEMENT(statement) SQLOK_ERRSTREAM(sqlite3_finalize(statement), \ + "Failed to finalize " #statement) + +int Database_SQLite3::busyHandler(void *data, int count) +{ + s64 &first_time = reinterpret_cast<s64 *>(data)[0]; + s64 &prev_time = reinterpret_cast<s64 *>(data)[1]; + s64 cur_time = porting::getTimeMs(); + + if (count == 0) { + first_time = cur_time; + prev_time = first_time; + } else { + while (cur_time < prev_time) + cur_time += s64(1)<<32; + } + + if (cur_time - first_time < BUSY_INFO_TRESHOLD) { + ; // do nothing + } else if (cur_time - first_time >= BUSY_INFO_TRESHOLD && + prev_time - first_time < BUSY_INFO_TRESHOLD) { + infostream << "SQLite3 database has been locked for " + << cur_time - first_time << " ms." << std::endl; + } else if (cur_time - first_time >= BUSY_WARNING_TRESHOLD && + prev_time - first_time < BUSY_WARNING_TRESHOLD) { + warningstream << "SQLite3 database has been locked for " + << cur_time - first_time << " ms." << std::endl; + } else if (cur_time - first_time >= BUSY_ERROR_TRESHOLD && + prev_time - first_time < BUSY_ERROR_TRESHOLD) { + errorstream << "SQLite3 database has been locked for " + << cur_time - first_time << " ms; this causes lag." << std::endl; + } else if (cur_time - first_time >= BUSY_FATAL_TRESHOLD && + prev_time - first_time < BUSY_FATAL_TRESHOLD) { + errorstream << "SQLite3 database has been locked for " + << cur_time - first_time << " ms - giving up!" << std::endl; + } else if ((cur_time - first_time) / BUSY_ERROR_INTERVAL != + (prev_time - first_time) / BUSY_ERROR_INTERVAL) { + // Safety net: keep reporting every BUSY_ERROR_INTERVAL + errorstream << "SQLite3 database has been locked for " + << (cur_time - first_time) / 1000 << " seconds!" << std::endl; + } + + prev_time = cur_time; + + // Make sqlite transaction fail if delay exceeds BUSY_FATAL_TRESHOLD + return cur_time - first_time < BUSY_FATAL_TRESHOLD; +} + + +Database_SQLite3::Database_SQLite3(const std::string &savedir, const std::string &dbname) : + m_savedir(savedir), + m_dbname(dbname) +{ +} + +void Database_SQLite3::beginSave() +{ + verifyDatabase(); + SQLRES(sqlite3_step(m_stmt_begin), SQLITE_DONE, + "Failed to start SQLite3 transaction"); + sqlite3_reset(m_stmt_begin); +} + +void Database_SQLite3::endSave() +{ + verifyDatabase(); + SQLRES(sqlite3_step(m_stmt_end), SQLITE_DONE, + "Failed to commit SQLite3 transaction"); + sqlite3_reset(m_stmt_end); +} + +void Database_SQLite3::openDatabase() +{ + if (m_database) return; + + std::string dbp = m_savedir + DIR_DELIM + m_dbname + ".sqlite"; + + // Open the database connection + + if (!fs::CreateAllDirs(m_savedir)) { + infostream << "Database_SQLite3: Failed to create directory \"" + << m_savedir << "\"" << std::endl; + throw FileNotGoodException("Failed to create database " + "save directory"); + } + + bool needs_create = !fs::PathExists(dbp); + + SQLOK(sqlite3_open_v2(dbp.c_str(), &m_database, + SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL), + std::string("Failed to open SQLite3 database file ") + dbp); + + SQLOK(sqlite3_busy_handler(m_database, Database_SQLite3::busyHandler, + m_busy_handler_data), "Failed to set SQLite3 busy handler"); + + if (needs_create) { + createDatabase(); + } + + std::string query_str = std::string("PRAGMA synchronous = ") + + itos(g_settings->getU16("sqlite_synchronous")); + SQLOK(sqlite3_exec(m_database, query_str.c_str(), NULL, NULL, NULL), + "Failed to modify sqlite3 synchronous mode"); + SQLOK(sqlite3_exec(m_database, "PRAGMA foreign_keys = ON", NULL, NULL, NULL), + "Failed to enable sqlite3 foreign key support"); +} + +void Database_SQLite3::verifyDatabase() +{ + if (m_initialized) return; + + openDatabase(); + + PREPARE_STATEMENT(begin, "BEGIN;"); + PREPARE_STATEMENT(end, "COMMIT;"); + + initStatements(); + + m_initialized = true; +} + +Database_SQLite3::~Database_SQLite3() +{ + FINALIZE_STATEMENT(m_stmt_begin) + FINALIZE_STATEMENT(m_stmt_end) + + SQLOK_ERRSTREAM(sqlite3_close(m_database), "Failed to close database"); +} + +/* + * Map database + */ + +MapDatabaseSQLite3::MapDatabaseSQLite3(const std::string &savedir): + Database_SQLite3(savedir, "map"), + MapDatabase() +{ +} + +MapDatabaseSQLite3::~MapDatabaseSQLite3() +{ + FINALIZE_STATEMENT(m_stmt_read) + FINALIZE_STATEMENT(m_stmt_write) + FINALIZE_STATEMENT(m_stmt_list) + FINALIZE_STATEMENT(m_stmt_delete) +} + + +void MapDatabaseSQLite3::createDatabase() +{ + assert(m_database); // Pre-condition + + SQLOK(sqlite3_exec(m_database, + "CREATE TABLE IF NOT EXISTS `blocks` (\n" + " `pos` INT PRIMARY KEY,\n" + " `data` BLOB\n" + ");\n", + NULL, NULL, NULL), + "Failed to create database table"); +} + +void MapDatabaseSQLite3::initStatements() +{ + PREPARE_STATEMENT(read, "SELECT `data` FROM `blocks` WHERE `pos` = ? LIMIT 1"); +#ifdef __ANDROID__ + PREPARE_STATEMENT(write, "INSERT INTO `blocks` (`pos`, `data`) VALUES (?, ?)"); +#else + PREPARE_STATEMENT(write, "REPLACE INTO `blocks` (`pos`, `data`) VALUES (?, ?)"); +#endif + PREPARE_STATEMENT(delete, "DELETE FROM `blocks` WHERE `pos` = ?"); + PREPARE_STATEMENT(list, "SELECT `pos` FROM `blocks`"); + + verbosestream << "ServerMap: SQLite3 database opened." << std::endl; +} + +inline void MapDatabaseSQLite3::bindPos(sqlite3_stmt *stmt, const v3s16 &pos, int index) +{ + SQLOK(sqlite3_bind_int64(stmt, index, getBlockAsInteger(pos)), + "Internal error: failed to bind query at " __FILE__ ":" TOSTRING(__LINE__)); +} + +bool MapDatabaseSQLite3::deleteBlock(const v3s16 &pos) +{ + verifyDatabase(); + + bindPos(m_stmt_delete, pos); + + bool good = sqlite3_step(m_stmt_delete) == SQLITE_DONE; + sqlite3_reset(m_stmt_delete); + + if (!good) { + warningstream << "deleteBlock: Block failed to delete " + << PP(pos) << ": " << sqlite3_errmsg(m_database) << std::endl; + } + return good; +} + +bool MapDatabaseSQLite3::saveBlock(const v3s16 &pos, const std::string &data) +{ + verifyDatabase(); + +#ifdef __ANDROID__ + /** + * Note: For some unknown reason SQLite3 fails to REPLACE blocks on Android, + * deleting them and then inserting works. + */ + bindPos(m_stmt_read, pos); + + if (sqlite3_step(m_stmt_read) == SQLITE_ROW) { + deleteBlock(pos); + } + sqlite3_reset(m_stmt_read); +#endif + + bindPos(m_stmt_write, pos); + SQLOK(sqlite3_bind_blob(m_stmt_write, 2, data.data(), data.size(), NULL), + "Internal error: failed to bind query at " __FILE__ ":" TOSTRING(__LINE__)); + + SQLRES(sqlite3_step(m_stmt_write), SQLITE_DONE, "Failed to save block") + sqlite3_reset(m_stmt_write); + + return true; +} + +void MapDatabaseSQLite3::loadBlock(const v3s16 &pos, std::string *block) +{ + verifyDatabase(); + + bindPos(m_stmt_read, pos); + + if (sqlite3_step(m_stmt_read) != SQLITE_ROW) { + sqlite3_reset(m_stmt_read); + return; + } + + const char *data = (const char *) sqlite3_column_blob(m_stmt_read, 0); + size_t len = sqlite3_column_bytes(m_stmt_read, 0); + + *block = (data) ? std::string(data, len) : ""; + + sqlite3_step(m_stmt_read); + // We should never get more than 1 row, so ok to reset + sqlite3_reset(m_stmt_read); +} + +void MapDatabaseSQLite3::listAllLoadableBlocks(std::vector<v3s16> &dst) +{ + verifyDatabase(); + + while (sqlite3_step(m_stmt_list) == SQLITE_ROW) + dst.push_back(getIntegerAsBlock(sqlite3_column_int64(m_stmt_list, 0))); + + sqlite3_reset(m_stmt_list); +} + +/* + * Player Database + */ + +PlayerDatabaseSQLite3::PlayerDatabaseSQLite3(const std::string &savedir): + Database_SQLite3(savedir, "players"), + PlayerDatabase() +{ +} + +PlayerDatabaseSQLite3::~PlayerDatabaseSQLite3() +{ + FINALIZE_STATEMENT(m_stmt_player_load) + FINALIZE_STATEMENT(m_stmt_player_add) + FINALIZE_STATEMENT(m_stmt_player_update) + FINALIZE_STATEMENT(m_stmt_player_remove) + FINALIZE_STATEMENT(m_stmt_player_list) + FINALIZE_STATEMENT(m_stmt_player_add_inventory) + FINALIZE_STATEMENT(m_stmt_player_add_inventory_items) + FINALIZE_STATEMENT(m_stmt_player_remove_inventory) + FINALIZE_STATEMENT(m_stmt_player_remove_inventory_items) + FINALIZE_STATEMENT(m_stmt_player_load_inventory) + FINALIZE_STATEMENT(m_stmt_player_load_inventory_items) + FINALIZE_STATEMENT(m_stmt_player_metadata_load) + FINALIZE_STATEMENT(m_stmt_player_metadata_add) + FINALIZE_STATEMENT(m_stmt_player_metadata_remove) +}; + + +void PlayerDatabaseSQLite3::createDatabase() +{ + assert(m_database); // Pre-condition + + SQLOK(sqlite3_exec(m_database, + "CREATE TABLE IF NOT EXISTS `player` (" + "`name` VARCHAR(50) NOT NULL," + "`pitch` NUMERIC(11, 4) NOT NULL," + "`yaw` NUMERIC(11, 4) NOT NULL," + "`posX` NUMERIC(11, 4) NOT NULL," + "`posY` NUMERIC(11, 4) NOT NULL," + "`posZ` NUMERIC(11, 4) NOT NULL," + "`hp` INT NOT NULL," + "`breath` INT NOT NULL," + "`creation_date` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP," + "`modification_date` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP," + "PRIMARY KEY (`name`));", + NULL, NULL, NULL), + "Failed to create player table"); + + SQLOK(sqlite3_exec(m_database, + "CREATE TABLE IF NOT EXISTS `player_metadata` (" + " `player` VARCHAR(50) NOT NULL," + " `metadata` VARCHAR(256) NOT NULL," + " `value` TEXT," + " PRIMARY KEY(`player`, `metadata`)," + " FOREIGN KEY (`player`) REFERENCES player (`name`) ON DELETE CASCADE );", + NULL, NULL, NULL), + "Failed to create player metadata table"); + + SQLOK(sqlite3_exec(m_database, + "CREATE TABLE IF NOT EXISTS `player_inventories` (" + " `player` VARCHAR(50) NOT NULL," + " `inv_id` INT NOT NULL," + " `inv_width` INT NOT NULL," + " `inv_name` TEXT NOT NULL DEFAULT ''," + " `inv_size` INT NOT NULL," + " PRIMARY KEY(player, inv_id)," + " FOREIGN KEY (`player`) REFERENCES player (`name`) ON DELETE CASCADE );", + NULL, NULL, NULL), + "Failed to create player inventory table"); + + SQLOK(sqlite3_exec(m_database, + "CREATE TABLE `player_inventory_items` (" + " `player` VARCHAR(50) NOT NULL," + " `inv_id` INT NOT NULL," + " `slot_id` INT NOT NULL," + " `item` TEXT NOT NULL DEFAULT ''," + " PRIMARY KEY(player, inv_id, slot_id)," + " FOREIGN KEY (`player`) REFERENCES player (`name`) ON DELETE CASCADE );", + NULL, NULL, NULL), + "Failed to create player inventory items table"); +} + +void PlayerDatabaseSQLite3::initStatements() +{ + PREPARE_STATEMENT(player_load, "SELECT `pitch`, `yaw`, `posX`, `posY`, `posZ`, `hp`, " + "`breath`" + "FROM `player` WHERE `name` = ?") + PREPARE_STATEMENT(player_add, "INSERT INTO `player` (`name`, `pitch`, `yaw`, `posX`, " + "`posY`, `posZ`, `hp`, `breath`) VALUES (?, ?, ?, ?, ?, ?, ?, ?)") + PREPARE_STATEMENT(player_update, "UPDATE `player` SET `pitch` = ?, `yaw` = ?, " + "`posX` = ?, `posY` = ?, `posZ` = ?, `hp` = ?, `breath` = ?, " + "`modification_date` = CURRENT_TIMESTAMP WHERE `name` = ?") + PREPARE_STATEMENT(player_remove, "DELETE FROM `player` WHERE `name` = ?") + PREPARE_STATEMENT(player_list, "SELECT `name` FROM `player`") + + PREPARE_STATEMENT(player_add_inventory, "INSERT INTO `player_inventories` " + "(`player`, `inv_id`, `inv_width`, `inv_name`, `inv_size`) VALUES (?, ?, ?, ?, ?)") + PREPARE_STATEMENT(player_add_inventory_items, "INSERT INTO `player_inventory_items` " + "(`player`, `inv_id`, `slot_id`, `item`) VALUES (?, ?, ?, ?)") + PREPARE_STATEMENT(player_remove_inventory, "DELETE FROM `player_inventories` " + "WHERE `player` = ?") + PREPARE_STATEMENT(player_remove_inventory_items, "DELETE FROM `player_inventory_items` " + "WHERE `player` = ?") + PREPARE_STATEMENT(player_load_inventory, "SELECT `inv_id`, `inv_width`, `inv_name`, " + "`inv_size` FROM `player_inventories` WHERE `player` = ? ORDER BY inv_id") + PREPARE_STATEMENT(player_load_inventory_items, "SELECT `slot_id`, `item` " + "FROM `player_inventory_items` WHERE `player` = ? AND `inv_id` = ?") + + PREPARE_STATEMENT(player_metadata_load, "SELECT `metadata`, `value` FROM " + "`player_metadata` WHERE `player` = ?") + PREPARE_STATEMENT(player_metadata_add, "INSERT INTO `player_metadata` " + "(`player`, `metadata`, `value`) VALUES (?, ?, ?)") + PREPARE_STATEMENT(player_metadata_remove, "DELETE FROM `player_metadata` " + "WHERE `player` = ?") + verbosestream << "ServerEnvironment: SQLite3 database opened (players)." << std::endl; +} + +bool PlayerDatabaseSQLite3::playerDataExists(const std::string &name) +{ + verifyDatabase(); + str_to_sqlite(m_stmt_player_load, 1, name); + bool res = (sqlite3_step(m_stmt_player_load) == SQLITE_ROW); + sqlite3_reset(m_stmt_player_load); + return res; +} + +void PlayerDatabaseSQLite3::savePlayer(RemotePlayer *player) +{ + PlayerSAO* sao = player->getPlayerSAO(); + sanity_check(sao); + + const v3f &pos = sao->getBasePosition(); + // Begin save in brace is mandatory + if (!playerDataExists(player->getName())) { + beginSave(); + str_to_sqlite(m_stmt_player_add, 1, player->getName()); + double_to_sqlite(m_stmt_player_add, 2, sao->getPitch()); + double_to_sqlite(m_stmt_player_add, 3, sao->getYaw()); + double_to_sqlite(m_stmt_player_add, 4, pos.X); + double_to_sqlite(m_stmt_player_add, 5, pos.Y); + double_to_sqlite(m_stmt_player_add, 6, pos.Z); + int64_to_sqlite(m_stmt_player_add, 7, sao->getHP()); + int64_to_sqlite(m_stmt_player_add, 8, sao->getBreath()); + + sqlite3_vrfy(sqlite3_step(m_stmt_player_add), SQLITE_DONE); + sqlite3_reset(m_stmt_player_add); + } else { + beginSave(); + double_to_sqlite(m_stmt_player_update, 1, sao->getPitch()); + double_to_sqlite(m_stmt_player_update, 2, sao->getYaw()); + double_to_sqlite(m_stmt_player_update, 3, pos.X); + double_to_sqlite(m_stmt_player_update, 4, pos.Y); + double_to_sqlite(m_stmt_player_update, 5, pos.Z); + int64_to_sqlite(m_stmt_player_update, 6, sao->getHP()); + int64_to_sqlite(m_stmt_player_update, 7, sao->getBreath()); + str_to_sqlite(m_stmt_player_update, 8, player->getName()); + + sqlite3_vrfy(sqlite3_step(m_stmt_player_update), SQLITE_DONE); + sqlite3_reset(m_stmt_player_update); + } + + // Write player inventories + str_to_sqlite(m_stmt_player_remove_inventory, 1, player->getName()); + sqlite3_vrfy(sqlite3_step(m_stmt_player_remove_inventory), SQLITE_DONE); + sqlite3_reset(m_stmt_player_remove_inventory); + + str_to_sqlite(m_stmt_player_remove_inventory_items, 1, player->getName()); + sqlite3_vrfy(sqlite3_step(m_stmt_player_remove_inventory_items), SQLITE_DONE); + sqlite3_reset(m_stmt_player_remove_inventory_items); + + std::vector<const InventoryList*> inventory_lists = sao->getInventory()->getLists(); + for (u16 i = 0; i < inventory_lists.size(); i++) { + const InventoryList* list = inventory_lists[i]; + + str_to_sqlite(m_stmt_player_add_inventory, 1, player->getName()); + int_to_sqlite(m_stmt_player_add_inventory, 2, i); + int_to_sqlite(m_stmt_player_add_inventory, 3, list->getWidth()); + str_to_sqlite(m_stmt_player_add_inventory, 4, list->getName()); + int_to_sqlite(m_stmt_player_add_inventory, 5, list->getSize()); + sqlite3_vrfy(sqlite3_step(m_stmt_player_add_inventory), SQLITE_DONE); + sqlite3_reset(m_stmt_player_add_inventory); + + for (u32 j = 0; j < list->getSize(); j++) { + std::ostringstream os; + list->getItem(j).serialize(os); + std::string itemStr = os.str(); + + str_to_sqlite(m_stmt_player_add_inventory_items, 1, player->getName()); + int_to_sqlite(m_stmt_player_add_inventory_items, 2, i); + int_to_sqlite(m_stmt_player_add_inventory_items, 3, j); + str_to_sqlite(m_stmt_player_add_inventory_items, 4, itemStr); + sqlite3_vrfy(sqlite3_step(m_stmt_player_add_inventory_items), SQLITE_DONE); + sqlite3_reset(m_stmt_player_add_inventory_items); + } + } + + str_to_sqlite(m_stmt_player_metadata_remove, 1, player->getName()); + sqlite3_vrfy(sqlite3_step(m_stmt_player_metadata_remove), SQLITE_DONE); + sqlite3_reset(m_stmt_player_metadata_remove); + + const PlayerAttributes &attrs = sao->getExtendedAttributes(); + for (const auto &attr : attrs) { + str_to_sqlite(m_stmt_player_metadata_add, 1, player->getName()); + str_to_sqlite(m_stmt_player_metadata_add, 2, attr.first); + str_to_sqlite(m_stmt_player_metadata_add, 3, attr.second); + sqlite3_vrfy(sqlite3_step(m_stmt_player_metadata_add), SQLITE_DONE); + sqlite3_reset(m_stmt_player_metadata_add); + } + + endSave(); +} + +bool PlayerDatabaseSQLite3::loadPlayer(RemotePlayer *player, PlayerSAO *sao) +{ + verifyDatabase(); + + str_to_sqlite(m_stmt_player_load, 1, player->getName()); + if (sqlite3_step(m_stmt_player_load) != SQLITE_ROW) { + sqlite3_reset(m_stmt_player_load); + return false; + } + sao->setPitch(sqlite_to_float(m_stmt_player_load, 0)); + sao->setYaw(sqlite_to_float(m_stmt_player_load, 1)); + sao->setBasePosition(sqlite_to_v3f(m_stmt_player_load, 2)); + sao->setHPRaw((s16) MYMIN(sqlite_to_int(m_stmt_player_load, 5), S16_MAX)); + sao->setBreath((u16) MYMIN(sqlite_to_int(m_stmt_player_load, 6), U16_MAX), false); + sqlite3_reset(m_stmt_player_load); + + // Load inventory + str_to_sqlite(m_stmt_player_load_inventory, 1, player->getName()); + while (sqlite3_step(m_stmt_player_load_inventory) == SQLITE_ROW) { + InventoryList *invList = player->inventory.addList( + sqlite_to_string(m_stmt_player_load_inventory, 2), + sqlite_to_uint(m_stmt_player_load_inventory, 3)); + invList->setWidth(sqlite_to_uint(m_stmt_player_load_inventory, 1)); + + u32 invId = sqlite_to_uint(m_stmt_player_load_inventory, 0); + + str_to_sqlite(m_stmt_player_load_inventory_items, 1, player->getName()); + int_to_sqlite(m_stmt_player_load_inventory_items, 2, invId); + while (sqlite3_step(m_stmt_player_load_inventory_items) == SQLITE_ROW) { + const std::string itemStr = sqlite_to_string(m_stmt_player_load_inventory_items, 1); + if (itemStr.length() > 0) { + ItemStack stack; + stack.deSerialize(itemStr); + invList->changeItem(sqlite_to_uint(m_stmt_player_load_inventory_items, 0), stack); + } + } + sqlite3_reset(m_stmt_player_load_inventory_items); + } + + sqlite3_reset(m_stmt_player_load_inventory); + + str_to_sqlite(m_stmt_player_metadata_load, 1, sao->getPlayer()->getName()); + while (sqlite3_step(m_stmt_player_metadata_load) == SQLITE_ROW) { + std::string attr = sqlite_to_string(m_stmt_player_metadata_load, 0); + std::string value = sqlite_to_string(m_stmt_player_metadata_load, 1); + + sao->setExtendedAttribute(attr, value); + } + sqlite3_reset(m_stmt_player_metadata_load); + return true; +} + +bool PlayerDatabaseSQLite3::removePlayer(const std::string &name) +{ + if (!playerDataExists(name)) + return false; + + str_to_sqlite(m_stmt_player_remove, 1, name); + sqlite3_vrfy(sqlite3_step(m_stmt_player_remove), SQLITE_DONE); + sqlite3_reset(m_stmt_player_remove); + return true; +} + +void PlayerDatabaseSQLite3::listPlayers(std::vector<std::string> &res) +{ + verifyDatabase(); + + while (sqlite3_step(m_stmt_player_list) == SQLITE_ROW) + res.push_back(sqlite_to_string(m_stmt_player_list, 0)); + + sqlite3_reset(m_stmt_player_list); +} |