359 lines
11 KiB
C++
359 lines
11 KiB
C++
//SPDX-FileCopyrightText: 2023 Yury Gubich <blue@macaw.me>
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//SPDX-License-Identifier: GPL-3.0-or-later
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#include "mysql.h"
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#include <fstream>
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#include <iostream>
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#include "mysqld_error.h"
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#include "statement.h"
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#include "transaction.h"
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#include "database/exceptions.h"
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constexpr const char* versionQuery = "SELECT value FROM system WHERE `key` = 'version'";
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constexpr const char* updateQuery = "UPDATE system SET `value` = ? WHERE `key` = 'version'";
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constexpr const char* registerQuery = "INSERT INTO accounts (`login`, `type`, `password`) VALUES (?, 1, ?)";
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constexpr const char* lastIdQuery = "SELECT LAST_INSERT_ID() AS id";
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constexpr const char* assignRoleQuery = "INSERT INTO roleBindings (`account`, `role`) SELECT ?, roles.id FROM roles WHERE roles.name = ?";
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constexpr const char* selectHash = "SELECT password FROM accounts where login = ?";
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constexpr const char* createSessionQuery = "INSERT INTO sessions (`owner`, `access`, `renew`, `persist`, `device`)"
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" SELECT accounts.id, ?, ?, true, ? FROM accounts WHERE accounts.login = ?"
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" RETURNING id, owner";
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constexpr const char* selectSession = "SELECT id, owner, renew FROM sessions where access = ?";
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constexpr const char* selectAssets = "SELECT id, owner, currency, title, icon, archived FROM assets where owner = ?";
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static const std::filesystem::path buildSQLPath = "database";
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DB::MySQL::MySQL():
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Interface(Type::mysql),
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connection(),
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login(),
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password(),
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database()
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{
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mysql_init(&connection);
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}
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DB::MySQL::~MySQL() {
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mysql_close(&connection);
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}
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void DB::MySQL::connect(const std::string& path) {
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if (state != State::disconnected)
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return;
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MYSQL* con = &connection;
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MYSQL* res = mysql_real_connect(
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con,
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NULL,
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login.c_str(),
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password.c_str(),
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database.empty() ? NULL : database.c_str(),
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0,
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path.c_str(),
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0
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);
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if (res != con)
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throw std::runtime_error(std::string("Error changing connecting: ") + mysql_error(con));
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state = State::connected;
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}
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void DB::MySQL::setCredentials(const std::string& login, const std::string& password) {
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if (MySQL::login == login && MySQL::password == password)
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return;
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MySQL::login = login;
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MySQL::password = password;
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if (state == State::disconnected)
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return;
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MYSQL* con = &connection;
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int result = mysql_change_user(
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con,
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login.c_str(),
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password.c_str(),
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database.empty() ? NULL : database.c_str()
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);
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if (result != 0)
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throw std::runtime_error(std::string("Error changing credetials: ") + mysql_error(con));
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}
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void DB::MySQL::setDatabase(const std::string& database) {
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if (MySQL::database == database)
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return;
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MySQL::database = database;
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if (state == State::disconnected)
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return;
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MYSQL* con = &connection;
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int result = mysql_select_db(con, database.c_str());
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if (result != 0)
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throw std::runtime_error(std::string("Error changing db: ") + mysql_error(con));
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}
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void DB::MySQL::disconnect() {
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if (state == State::disconnected)
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return;
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MYSQL* con = &connection;
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mysql_close(con);
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mysql_init(con); //this is ridiculous!
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}
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void DB::MySQL::executeFile(const std::filesystem::path& relativePath) {
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MYSQL* con = &connection;
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std::filesystem::path path = sharedPath() / relativePath;
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if (!std::filesystem::exists(path))
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throw std::runtime_error("Error executing file "
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+ std::filesystem::absolute(path).string()
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+ ": file doesn't exist");
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std::cout << "Executing file " << path << std::endl;
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std::ifstream inputFile(path);
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std::string query;
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while (std::getline(inputFile, query, ';')) {
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std::optional<std::string> comment = getComment(query);
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while (comment) {
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std::cout << '\t' << comment.value() << std::endl;
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comment = getComment(query);
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}
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if (query.empty())
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continue;
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int result = mysql_query(con, query.c_str());
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if (result != 0) {
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int errcode = mysql_errno(con);
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if (errcode == ER_EMPTY_QUERY)
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continue;
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throw std::runtime_error("Error executing file " + path.string() + ": " + mysql_error(con));
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}
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}
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}
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uint8_t DB::MySQL::getVersion() {
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MYSQL* con = &connection;
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int result = mysql_query(con, versionQuery);
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if (result != 0) {
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unsigned int errcode = mysql_errno(con);
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if (errcode == ER_NO_SUCH_TABLE)
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return 0;
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throw std::runtime_error(std::string("Error executing retreiving version: ") + mysql_error(con));
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}
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std::unique_ptr<MYSQL_RES, ResDeleter> res(mysql_store_result(con));
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if (!res)
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throw std::runtime_error(std::string("Querying version returned no result: ") + mysql_error(con));
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MYSQL_ROW row = mysql_fetch_row(res.get());
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if (row)
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return std::stoi(row[0]);
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else
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return 0;
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}
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void DB::MySQL::setVersion(uint8_t version) {
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std::string strVersion = std::to_string(version);
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Statement statement(&connection, updateQuery);
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statement.bind(strVersion.data(), MYSQL_TYPE_VAR_STRING);
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statement.execute();
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}
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void DB::MySQL::migrate(uint8_t targetVersion) {
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uint8_t currentVersion = getVersion();
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while (currentVersion < targetVersion) {
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if (currentVersion == 255)
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throw std::runtime_error("Maximum possible database version reached");
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uint8_t nextVersion = currentVersion + 1;
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std::string fileName = "migrations/m" + std::to_string(currentVersion) + ".sql";
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std::cout << "Performing migration "
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<< std::to_string(currentVersion)
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<< " -> "
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<< std::to_string(nextVersion)
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<< std::endl;
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executeFile(fileName);
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setVersion(nextVersion);
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currentVersion = nextVersion;
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}
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std::cout << "Database is now on actual version " << std::to_string(targetVersion) << std::endl;
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}
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std::optional<std::string> DB::MySQL::getComment(std::string& string) {
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ltrim(string);
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if (string.length() < 2)
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return std::nullopt;
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if (string[0] == '-') {
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if (string[1] == '-') {
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string.erase(0, 2);
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std::string::size_type eol = string.find('\n');
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return extract(string, 0, eol);
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}
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} else if (string[0] == '/') {
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if (string[1] == '*') {
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string.erase(0, 2);
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std::string::size_type end = 0;
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do {
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end = string.find(end, '*');
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} while (end != std::string::npos && end < string.size() - 1 && string[end + 1] == '/');
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if (end < string.size() - 1)
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end = std::string::npos;
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return extract(string, 0, end);
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}
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}
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return std::nullopt;
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}
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unsigned int DB::MySQL::registerAccount(const std::string& login, const std::string& hash) {
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//TODO validate filed lengths!
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MYSQL* con = &connection;
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MySQL::Transaction txn(con);
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Statement addAcc(con, registerQuery);
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std::string l = login; //I hate copying just to please this horible API
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std::string h = hash;
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addAcc.bind(l.data(), MYSQL_TYPE_STRING);
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addAcc.bind(h.data(), MYSQL_TYPE_STRING);
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try {
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addAcc.execute();
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} catch (const Duplicate& dup) {
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throw DuplicateLogin(dup.what());
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}
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unsigned int id = lastInsertedId();
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static std::string defaultRole("default");
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Statement addRole(con, assignRoleQuery);
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addRole.bind(&id, MYSQL_TYPE_LONG, true);
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addRole.bind(defaultRole.data(), MYSQL_TYPE_STRING);
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addRole.execute();
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txn.commit();
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return id;
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}
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std::string DB::MySQL::getAccountHash(const std::string& login) {
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std::string l = login;
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MYSQL* con = &connection;
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Statement getHash(con, selectHash);
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getHash.bind(l.data(), MYSQL_TYPE_STRING);
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getHash.execute();
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std::vector<std::vector<std::any>> result = getHash.fetchResult();
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if (result.empty())
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throw NoLogin("Couldn't find login " + l);
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if (result[0].empty())
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throw std::runtime_error("Error with the query \"selectHash\"");
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return std::any_cast<const std::string&>(result[0][0]);
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}
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DB::Session DB::MySQL::createSession(const std::string& login, const std::string& access, const std::string& renew) {
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std::string l = login;
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DB::Session res;
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res.accessToken = access;
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res.renewToken = renew;
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static std::string testingDevice("Testing...");
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MYSQL* con = &connection;
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Statement session(con, createSessionQuery);
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session.bind(res.accessToken.data(), MYSQL_TYPE_STRING);
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session.bind(res.renewToken.data(), MYSQL_TYPE_STRING);
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session.bind(testingDevice.data(), MYSQL_TYPE_STRING);
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session.bind(l.data(), MYSQL_TYPE_STRING);
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session.execute();
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std::vector<std::vector<std::any>> result = session.fetchResult();
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if (result.empty())
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throw std::runtime_error("Error returning ids after insertion in sessions table");
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res.id = std::any_cast<unsigned int>(result[0][0]);
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res.owner = std::any_cast<unsigned int>(result[0][1]);
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return res;
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}
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unsigned int DB::MySQL::lastInsertedId() {
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MYSQL* con = &connection;
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int result = mysql_query(con, lastIdQuery);
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if (result != 0)
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throw std::runtime_error(std::string("Error executing last inserted id: ") + mysql_error(con));
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std::unique_ptr<MYSQL_RES, ResDeleter> res(mysql_store_result(con));
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if (!res)
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throw std::runtime_error(std::string("Querying last inserted id returned no result: ") + mysql_error(con));
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MYSQL_ROW row = mysql_fetch_row(res.get());
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if (row)
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return std::stoi(row[0]);
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else
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throw std::runtime_error(std::string("Querying last inserted id returned no rows"));
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}
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DB::Session DB::MySQL::findSession(const std::string& accessToken) {
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std::string a = accessToken;
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MYSQL* con = &connection;
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Statement session(con, selectSession);
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session.bind(a.data(), MYSQL_TYPE_STRING);
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session.execute();
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std::vector<std::vector<std::any>> result = session.fetchResult();
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if (result.empty())
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throw NoSession("Couldn't find session with token " + a);
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DB::Session res;
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res.id = std::any_cast<unsigned int>(result[0][0]);
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res.owner = std::any_cast<unsigned int>(result[0][1]);
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res.renewToken = std::any_cast<const std::string&>(result[0][2]);
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res.accessToken = a;
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return res;
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}
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std::vector<DB::Asset> DB::MySQL::listAssets(unsigned int owner) {
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MYSQL* con = &connection;
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Statement st(con, selectSession);
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st.bind(&owner, MYSQL_TYPE_LONG, true);
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st.execute();
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std::vector<std::vector<std::any>> res = st.fetchResult();
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std::size_t size = res.size();
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std::vector<DB::Asset> result(size);
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for (std::size_t i = 0; i < size; ++i) {
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const std::vector<std::any>& proto = res[i];
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DB::Asset& asset = result[i];
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asset.id = std::any_cast<unsigned int>(proto[0]);
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asset.owner = std::any_cast<unsigned int>(proto[1]);
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asset.currency = std::any_cast<unsigned int>(proto[2]);
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asset.title = std::any_cast<const std::string&>(proto[3]);
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asset.icon = std::any_cast<const std::string&>(proto[4]);
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asset.archived = std::any_cast<bool>(proto[5]); //TODO
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}
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return result;
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}
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