<?php
-use \Friendica\Core\System;
-
-require_once("dbm.php");
-require_once('include/datetime.php');
-
/**
- * @class MySQL database class
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
*
- * This class is for the low level database stuff that does driver specific things.
*/
-class dba {
-
- private $debug = 0;
- private $db;
- private $result;
- private $driver;
- public $connected = false;
- public $error = false;
- public $errorno = 0;
- public $affected_rows = 0;
- private $_server_info = '';
- private static $in_transaction = false;
- private static $dbo;
- private static $relation = array();
-
- function __construct($serveraddr, $user, $pass, $db, $install = false) {
- $a = get_app();
-
- $stamp1 = microtime(true);
-
- $serveraddr = trim($serveraddr);
-
- $serverdata = explode(':', $serveraddr);
- $server = $serverdata[0];
-
- if (count($serverdata) > 1) {
- $port = trim($serverdata[1]);
- }
-
- $server = trim($server);
- $user = trim($user);
- $pass = trim($pass);
- $db = trim($db);
-
- if (!(strlen($server) && strlen($user))) {
- $this->connected = false;
- $this->db = null;
- return;
- }
-
- if ($install) {
- if (strlen($server) && ($server !== 'localhost') && ($server !== '127.0.0.1')) {
- if (! dns_get_record($server, DNS_A + DNS_CNAME + DNS_PTR)) {
- $this->error = sprintf(t('Cannot locate DNS info for database server \'%s\''), $server);
- $this->connected = false;
- $this->db = null;
- return;
- }
- }
- }
-
- if (class_exists('\PDO') && in_array('mysql', PDO::getAvailableDrivers())) {
- $this->driver = 'pdo';
- $connect = "mysql:host=".$server.";dbname=".$db;
-
- if (isset($port)) {
- $connect .= ";port=".$port;
- }
-
- if (isset($a->config["system"]["db_charset"])) {
- $connect .= ";charset=".$a->config["system"]["db_charset"];
- }
- try {
- $this->db = @new PDO($connect, $user, $pass);
- $this->connected = true;
- } catch (PDOException $e) {
- $this->connected = false;
- }
- }
-
- if (!$this->connected && class_exists('mysqli')) {
- $this->driver = 'mysqli';
- $this->db = @new mysqli($server, $user, $pass, $db, $port);
- if (!mysqli_connect_errno()) {
- $this->connected = true;
-
- if (isset($a->config["system"]["db_charset"])) {
- $this->db->set_charset($a->config["system"]["db_charset"]);
- }
- }
- }
-
- if (!$this->connected && function_exists('mysql_connect')) {
- $this->driver = 'mysql';
- $this->db = mysql_connect($serveraddr, $user, $pass);
- if ($this->db && mysql_select_db($db, $this->db)) {
- $this->connected = true;
-
- if (isset($a->config["system"]["db_charset"])) {
- mysql_set_charset($a->config["system"]["db_charset"], $this->db);
- }
- }
- }
-
- // No suitable SQL driver was found.
- if (!$this->connected) {
- $this->db = null;
- if (!$install) {
- system_unavailable();
- }
- }
- $a->save_timestamp($stamp1, "network");
-
- self::$dbo = $this;
- }
-
- /**
- * @brief Returns the MySQL server version string
- *
- * This function discriminate between the deprecated mysql API and the current
- * object-oriented mysqli API. Example of returned string: 5.5.46-0+deb8u1
- *
- * @return string
- */
- public function server_info() {
- if ($this->_server_info == '') {
- switch ($this->driver) {
- case 'pdo':
- $this->_server_info = $this->db->getAttribute(PDO::ATTR_SERVER_VERSION);
- break;
- case 'mysqli':
- $this->_server_info = $this->db->server_info;
- break;
- case 'mysql':
- $this->_server_info = mysql_get_server_info($this->db);
- break;
- }
- }
- return $this->_server_info;
- }
-
- /**
- * @brief Returns the selected database name
- *
- * @return string
- */
- public function database_name() {
- $r = $this->q("SELECT DATABASE() AS `db`");
-
- return $r[0]['db'];
- }
-
- /**
- * @brief Analyze a database query and log this if some conditions are met.
- *
- * @param string $query The database query that will be analyzed
- */
- public function log_index($query) {
- $a = get_app();
-
- if (empty($a->config["system"]["db_log_index"])) {
- return;
- }
-
- // Don't explain an explain statement
- if (strtolower(substr($query, 0, 7)) == "explain") {
- return;
- }
-
- // Only do the explain on "select", "update" and "delete"
- if (!in_array(strtolower(substr($query, 0, 6)), array("select", "update", "delete"))) {
- return;
- }
-
- $r = $this->q("EXPLAIN ".$query);
- if (!dbm::is_result($r)) {
- return;
- }
-
- $watchlist = explode(',', $a->config["system"]["db_log_index_watch"]);
- $blacklist = explode(',', $a->config["system"]["db_log_index_blacklist"]);
-
- foreach ($r AS $row) {
- if ((intval($a->config["system"]["db_loglimit_index"]) > 0)) {
- $log = (in_array($row['key'], $watchlist) &&
- ($row['rows'] >= intval($a->config["system"]["db_loglimit_index"])));
- } else {
- $log = false;
- }
-
- if ((intval($a->config["system"]["db_loglimit_index_high"]) > 0) && ($row['rows'] >= intval($a->config["system"]["db_loglimit_index_high"]))) {
- $log = true;
- }
-
- if (in_array($row['key'], $blacklist) || ($row['key'] == "")) {
- $log = false;
- }
-
- if ($log) {
- $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
- @file_put_contents($a->config["system"]["db_log_index"], datetime_convert()."\t".
- $row['key']."\t".$row['rows']."\t".$row['Extra']."\t".
- basename($backtrace[1]["file"])."\t".
- $backtrace[1]["line"]."\t".$backtrace[2]["function"]."\t".
- substr($query, 0, 2000)."\n", FILE_APPEND);
- }
- }
- }
-
- /**
- * @brief execute SQL query - deprecated
- *
- * Please use the dba:: functions instead:
- * dba::select, dba::exists, dba::insert
- * dba::delete, dba::update, dba::p, dba::e
- *
- * @param string $sql SQL query
- * @return array Query array
- */
- public function q($sql) {
- $ret = self::p($sql);
-
- if (is_bool($ret)) {
- return $ret;
- }
-
- $columns = self::columnCount($ret);
-
- $data = self::inArray($ret);
-
- if ((count($data) == 0) && ($columns == 0)) {
- return true;
- }
-
- return $data;
- }
-
- public function escape($str) {
- if ($this->db && $this->connected) {
- switch ($this->driver) {
- case 'pdo':
- return substr(@$this->db->quote($str, PDO::PARAM_STR), 1, -1);
- case 'mysqli':
- return @$this->db->real_escape_string($str);
- case 'mysql':
- return @mysql_real_escape_string($str,$this->db);
- }
- }
- }
-
- function connected() {
- switch ($this->driver) {
- case 'pdo':
- // Not sure if this really is working like expected
- $connected = ($this->db->getAttribute(PDO::ATTR_CONNECTION_STATUS) != "");
- break;
- case 'mysqli':
- $connected = $this->db->ping();
- break;
- case 'mysql':
- $connected = mysql_ping($this->db);
- break;
- }
- return $connected;
- }
-
- function __destruct() {
- if ($this->db) {
- switch ($this->driver) {
- case 'pdo':
- $this->db = null;
- break;
- case 'mysqli':
- $this->db->close();
- break;
- case 'mysql':
- mysql_close($this->db);
- break;
- }
- }
- }
-
- /**
- * @brief Replaces ANY_VALUE() function by MIN() function,
- * if the database server does not support ANY_VALUE().
- *
- * Considerations for Standard SQL, or MySQL with ONLY_FULL_GROUP_BY (default since 5.7.5).
- * ANY_VALUE() is available from MySQL 5.7.5 https://dev.mysql.com/doc/refman/5.7/en/miscellaneous-functions.html
- * A standard fall-back is to use MIN().
- *
- * @param string $sql An SQL string without the values
- * @return string The input SQL string modified if necessary.
- */
- public function any_value_fallback($sql) {
- $server_info = $this->server_info();
- if (version_compare($server_info, '5.7.5', '<') ||
- (stripos($server_info, 'MariaDB') !== false)) {
- $sql = str_ireplace('ANY_VALUE(', 'MIN(', $sql);
- }
- return $sql;
- }
-
- /**
- * @brief beautifies the query - useful for "SHOW PROCESSLIST"
- *
- * This is safe when we bind the parameters later.
- * The parameter values aren't part of the SQL.
- *
- * @param string $sql An SQL string without the values
- * @return string The input SQL string modified if necessary.
- */
- public function clean_query($sql) {
- $search = array("\t", "\n", "\r", " ");
- $replace = array(' ', ' ', ' ', ' ');
- do {
- $oldsql = $sql;
- $sql = str_replace($search, $replace, $sql);
- } while ($oldsql != $sql);
-
- return $sql;
- }
-
-
- /**
- * @brief Replaces the ? placeholders with the parameters in the $args array
- *
- * @param string $sql SQL query
- * @param array $args The parameters that are to replace the ? placeholders
- * @return string The replaced SQL query
- */
- private static function replace_parameters($sql, $args) {
- $offset = 0;
- foreach ($args AS $param => $value) {
- if (is_int($args[$param]) || is_float($args[$param])) {
- $replace = intval($args[$param]);
- } else {
- $replace = "'".self::$dbo->escape($args[$param])."'";
- }
-
- $pos = strpos($sql, '?', $offset);
- if ($pos !== false) {
- $sql = substr_replace($sql, $replace, $pos, 1);
- }
- $offset = $pos + strlen($replace);
- }
- return $sql;
- }
-
- /**
- * @brief Convert parameter array to an universal form
- * @param array $args Parameter array
- * @return array universalized parameter array
- */
- private static function getParam($args) {
- unset($args[0]);
-
- // When the second function parameter is an array then use this as the parameter array
- if ((count($args) > 0) && (is_array($args[1]))) {
- return $args[1];
- } else {
- return $args;
- }
- }
-
- /**
- * @brief Executes a prepared statement that returns data
- * @usage Example: $r = p("SELECT * FROM `item` WHERE `guid` = ?", $guid);
- *
- * Please only use it with complicated queries.
- * For all regular queries please use dba::select or dba::exists
- *
- * @param string $sql SQL statement
- * @return object statement object
- */
- public static function p($sql) {
- $a = get_app();
-
- $stamp1 = microtime(true);
-
- $params = self::getParam(func_get_args());
-
- // Renumber the array keys to be sure that they fit
- $i = 0;
- $args = array();
- foreach ($params AS $param) {
- // Avoid problems with some MySQL servers and boolean values. See issue #3645
- if (is_bool($param)) {
- $param = (int)$param;
- }
- $args[++$i] = $param;
- }
-
- if (!self::$dbo || !self::$dbo->connected) {
- return false;
- }
-
- if ((substr_count($sql, '?') != count($args)) && (count($args) > 0)) {
- // Question: Should we continue or stop the query here?
- logger('Parameter mismatch. Query "'.$sql.'" - Parameters '.print_r($args, true), LOGGER_DEBUG);
- }
-
- $sql = self::$dbo->clean_query($sql);
- $sql = self::$dbo->any_value_fallback($sql);
-
- $orig_sql = $sql;
-
- if (x($a->config,'system') && x($a->config['system'], 'db_callstack')) {
- $sql = "/*".System::callstack()." */ ".$sql;
- }
-
- self::$dbo->error = '';
- self::$dbo->errorno = 0;
- self::$dbo->affected_rows = 0;
-
- // We have to make some things different if this function is called from "e"
- $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2);
-
- if (isset($trace[1])) {
- $called_from = $trace[1];
- } else {
- // We use just something that is defined to avoid warnings
- $called_from = $trace[0];
- }
- // We are having an own error logging in the function "e"
- $called_from_e = ($called_from['function'] == 'e');
-
- switch (self::$dbo->driver) {
- case 'pdo':
- // If there are no arguments we use "query"
- if (count($args) == 0) {
- if (!$retval = self::$dbo->db->query($sql)) {
- $errorInfo = self::$dbo->db->errorInfo();
- self::$dbo->error = $errorInfo[2];
- self::$dbo->errorno = $errorInfo[1];
- $retval = false;
- break;
- }
- self::$dbo->affected_rows = $retval->rowCount();
- break;
- }
-
- if (!$stmt = self::$dbo->db->prepare($sql)) {
- $errorInfo = self::$dbo->db->errorInfo();
- self::$dbo->error = $errorInfo[2];
- self::$dbo->errorno = $errorInfo[1];
- $retval = false;
- break;
- }
-
- foreach ($args AS $param => $value) {
- $stmt->bindParam($param, $args[$param]);
- }
-
- if (!$stmt->execute()) {
- $errorInfo = $stmt->errorInfo();
- self::$dbo->error = $errorInfo[2];
- self::$dbo->errorno = $errorInfo[1];
- $retval = false;
- } else {
- $retval = $stmt;
- self::$dbo->affected_rows = $retval->rowCount();
- }
- break;
- case 'mysqli':
- // There are SQL statements that cannot be executed with a prepared statement
- $parts = explode(' ', $orig_sql);
- $command = strtolower($parts[0]);
- $can_be_prepared = in_array($command, array('select', 'update', 'insert', 'delete'));
-
- // The fallback routine is called as well when there are no arguments
- if (!$can_be_prepared || (count($args) == 0)) {
- $retval = self::$dbo->db->query(self::replace_parameters($sql, $args));
- if (self::$dbo->db->errno) {
- self::$dbo->error = self::$dbo->db->error;
- self::$dbo->errorno = self::$dbo->db->errno;
- $retval = false;
- } else {
- if (isset($retval->num_rows)) {
- self::$dbo->affected_rows = $retval->num_rows;
- } else {
- self::$dbo->affected_rows = self::$dbo->db->affected_rows;
- }
- }
- break;
- }
-
- $stmt = self::$dbo->db->stmt_init();
-
- if (!$stmt->prepare($sql)) {
- self::$dbo->error = $stmt->error;
- self::$dbo->errorno = $stmt->errno;
- $retval = false;
- break;
- }
-
- $params = '';
- $values = array();
- foreach ($args AS $param => $value) {
- if (is_int($args[$param])) {
- $params .= 'i';
- } elseif (is_float($args[$param])) {
- $params .= 'd';
- } elseif (is_string($args[$param])) {
- $params .= 's';
- } else {
- $params .= 'b';
- }
- $values[] = &$args[$param];
- }
-
- if (count($values) > 0) {
- array_unshift($values, $params);
- call_user_func_array(array($stmt, 'bind_param'), $values);
- }
-
- if (!$stmt->execute()) {
- self::$dbo->error = self::$dbo->db->error;
- self::$dbo->errorno = self::$dbo->db->errno;
- $retval = false;
- } else {
- $stmt->store_result();
- $retval = $stmt;
- self::$dbo->affected_rows = $retval->affected_rows;
- }
- break;
- case 'mysql':
- // For the old "mysql" functions we cannot use prepared statements
- $retval = mysql_query(self::replace_parameters($sql, $args), self::$dbo->db);
- if (mysql_errno(self::$dbo->db)) {
- self::$dbo->error = mysql_error(self::$dbo->db);
- self::$dbo->errorno = mysql_errno(self::$dbo->db);
- } else {
- self::$dbo->affected_rows = mysql_affected_rows($retval);
-
- // Due to missing mysql_* support this here wasn't tested at all
- // See here: http://php.net/manual/en/function.mysql-num-rows.php
- if (self::$dbo->affected_rows <= 0) {
- self::$dbo->affected_rows = mysql_num_rows($retval);
- }
- }
- break;
- }
-
- // We are having an own error logging in the function "e"
- if ((self::$dbo->errorno != 0) && !$called_from_e) {
- // We have to preserve the error code, somewhere in the logging it get lost
- $error = self::$dbo->error;
- $errorno = self::$dbo->errorno;
-
- logger('DB Error '.self::$dbo->errorno.': '.self::$dbo->error."\n".
- System::callstack(8)."\n".self::replace_parameters($sql, $params));
-
- self::$dbo->error = $error;
- self::$dbo->errorno = $errorno;
- }
-
- $a->save_timestamp($stamp1, 'database');
-
- if (x($a->config,'system') && x($a->config['system'], 'db_log')) {
-
- $stamp2 = microtime(true);
- $duration = (float)($stamp2 - $stamp1);
-
- if (($duration > $a->config["system"]["db_loglimit"])) {
- $duration = round($duration, 3);
- $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
-
- @file_put_contents($a->config["system"]["db_log"], datetime_convert()."\t".$duration."\t".
- basename($backtrace[1]["file"])."\t".
- $backtrace[1]["line"]."\t".$backtrace[2]["function"]."\t".
- substr(self::replace_parameters($sql, $args), 0, 2000)."\n", FILE_APPEND);
- }
- }
- return $retval;
- }
-
- /**
- * @brief Executes a prepared statement like UPDATE or INSERT that doesn't return data
- *
- * Please use dba::delete, dba::insert, dba::update, ... instead
- *
- * @param string $sql SQL statement
- * @return boolean Was the query successfull? False is returned only if an error occurred
- */
- public static function e($sql) {
- $a = get_app();
-
- $stamp = microtime(true);
-
- $params = self::getParam(func_get_args());
-
- // In a case of a deadlock we are repeating the query 20 times
- $timeout = 20;
-
- do {
- $stmt = self::p($sql, $params);
-
- if (is_bool($stmt)) {
- $retval = $stmt;
- } elseif (is_object($stmt)) {
- $retval = true;
- } else {
- $retval = false;
- }
-
- self::close($stmt);
-
- } while ((self::$dbo->errorno == 1213) && (--$timeout > 0));
-
- if (self::$dbo->errorno != 0) {
- // We have to preserve the error code, somewhere in the logging it get lost
- $error = self::$dbo->error;
- $errorno = self::$dbo->errorno;
-
- logger('DB Error '.self::$dbo->errorno.': '.self::$dbo->error."\n".
- System::callstack(8)."\n".self::replace_parameters($sql, $params));
-
- self::$dbo->error = $error;
- self::$dbo->errorno = $errorno;
- }
-
- $a->save_timestamp($stamp, "database_write");
-
- return $retval;
- }
-
- /**
- * @brief Check if data exists
- *
- * @param string $table Table name
- * @param array $condition array of fields for condition
- *
- * @return boolean Are there rows for that condition?
- */
- public static function exists($table, $condition) {
- if (empty($table)) {
- return false;
- }
-
- $fields = array();
-
- $array_element = each($condition);
- $array_key = $array_element['key'];
- if (!is_int($array_key)) {
- $fields = array($array_key);
- }
-
- $stmt = self::select($table, $fields, $condition, array('limit' => 1, 'only_query' => true));
-
- if (is_bool($stmt)) {
- $retval = $stmt;
- } else {
- $retval = (self::num_rows($stmt) > 0);
- }
-
- self::close($stmt);
-
- return $retval;
- }
-
- /**
- * @brief Fetches the first row
- *
- * Please use dba::select or dba::exists whenever this is possible.
- *
- * @param string $sql SQL statement
- * @return array first row of query
- */
- public static function fetch_first($sql) {
- $params = self::getParam(func_get_args());
-
- $stmt = self::p($sql, $params);
-
- if (is_bool($stmt)) {
- $retval = $stmt;
- } else {
- $retval = self::fetch($stmt);
- }
-
- self::close($stmt);
-
- return $retval;
- }
-
- /**
- * @brief Returns the number of affected rows of the last statement
- *
- * @return int Number of rows
- */
- public static function affected_rows() {
- return self::$dbo->affected_rows;
- }
-
- /**
- * @brief Returns the number of columns of a statement
- *
- * @param object Statement object
- * @return int Number of columns
- */
- public static function columnCount($stmt) {
- if (!is_object($stmt)) {
- return 0;
- }
- switch (self::$dbo->driver) {
- case 'pdo':
- return $stmt->columnCount();
- case 'mysqli':
- return $stmt->field_count;
- case 'mysql':
- return mysql_affected_rows($stmt);
- }
- return 0;
- }
- /**
- * @brief Returns the number of rows of a statement
- *
- * @param object Statement object
- * @return int Number of rows
- */
- public static function num_rows($stmt) {
- if (!is_object($stmt)) {
- return 0;
- }
- switch (self::$dbo->driver) {
- case 'pdo':
- return $stmt->rowCount();
- case 'mysqli':
- return $stmt->num_rows;
- case 'mysql':
- return mysql_num_rows($stmt);
- }
- return 0;
- }
-
- /**
- * @brief Fetch a single row
- *
- * @param object $stmt statement object
- * @return array current row
- */
- public static function fetch($stmt) {
- if (!is_object($stmt)) {
- return false;
- }
-
- switch (self::$dbo->driver) {
- case 'pdo':
- return $stmt->fetch(PDO::FETCH_ASSOC);
- case 'mysqli':
- if (get_class($stmt) == 'mysqli_result') {
- return $stmt->fetch_assoc();
- }
-
- // This code works, but is slow
-
- // Bind the result to a result array
- $cols = array();
-
- $cols_num = array();
- for ($x = 0; $x < $stmt->field_count; $x++) {
- $cols[] = &$cols_num[$x];
- }
-
- call_user_func_array(array($stmt, 'bind_result'), $cols);
-
- if (!$stmt->fetch()) {
- return false;
- }
-
- // The slow part:
- // We need to get the field names for the array keys
- // It seems that there is no better way to do this.
- $result = $stmt->result_metadata();
- $fields = $result->fetch_fields();
-
- $columns = array();
- foreach ($cols_num AS $param => $col) {
- $columns[$fields[$param]->name] = $col;
- }
- return $columns;
- case 'mysql':
- return mysql_fetch_array(self::$dbo->result, MYSQL_ASSOC);
- }
- }
-
- /**
- * @brief Insert a row into a table
- *
- * @param string $table Table name
- * @param array $param parameter array
- * @param bool $on_duplicate_update Do an update on a duplicate entry
- *
- * @return boolean was the insert successfull?
- */
- public static function insert($table, $param, $on_duplicate_update = false) {
- $sql = "INSERT INTO `".self::$dbo->escape($table)."` (`".implode("`, `", array_keys($param))."`) VALUES (".
- substr(str_repeat("?, ", count($param)), 0, -2).")";
-
- if ($on_duplicate_update) {
- $sql .= " ON DUPLICATE KEY UPDATE `".implode("` = ?, `", array_keys($param))."` = ?";
-
- $values = array_values($param);
- $param = array_merge_recursive($values, $values);
- }
-
- return self::e($sql, $param);
- }
-
- /**
- * @brief Fetch the id of the last insert command
- *
- * @return integer Last inserted id
- */
- public static function lastInsertId() {
- switch (self::$dbo->driver) {
- case 'pdo':
- $id = self::$dbo->db->lastInsertId();
- break;
- case 'mysqli':
- $id = self::$dbo->db->insert_id;
- break;
- case 'mysql':
- $id = mysql_insert_id(self::$dbo);
- break;
- }
- return $id;
- }
-
- /**
- * @brief Locks a table for exclusive write access
- *
- * This function can be extended in the future to accept a table array as well.
- *
- * @param string $table Table name
- *
- * @return boolean was the lock successful?
- */
- public static function lock($table) {
- // See here: https://dev.mysql.com/doc/refman/5.7/en/lock-tables-and-transactions.html
- self::e("SET autocommit=0");
- $success = self::e("LOCK TABLES `".self::$dbo->escape($table)."` WRITE");
- if (!$success) {
- self::e("SET autocommit=1");
- } else {
- self::$in_transaction = true;
- }
- return $success;
- }
-
- /**
- * @brief Unlocks all locked tables
- *
- * @return boolean was the unlock successful?
- */
- public static function unlock() {
- // See here: https://dev.mysql.com/doc/refman/5.7/en/lock-tables-and-transactions.html
- self::e("COMMIT");
- $success = self::e("UNLOCK TABLES");
- self::e("SET autocommit=1");
- self::$in_transaction = false;
- return $success;
- }
-
- /**
- * @brief Starts a transaction
- *
- * @return boolean Was the command executed successfully?
- */
- public static function transaction() {
- if (!self::e('COMMIT')) {
- return false;
- }
- if (!self::e('START TRANSACTION')) {
- return false;
- }
- self::$in_transaction = true;
- return true;
- }
-
- /**
- * @brief Does a commit
- *
- * @return boolean Was the command executed successfully?
- */
- public static function commit() {
- if (!self::e('COMMIT')) {
- return false;
- }
- self::$in_transaction = false;
- return true;
- }
-
- /**
- * @brief Does a rollback
- *
- * @return boolean Was the command executed successfully?
- */
- public static function rollback() {
- if (!self::e('ROLLBACK')) {
- return false;
- }
- self::$in_transaction = false;
- return true;
- }
-
- /**
- * @brief Build the array with the table relations
- *
- * The array is build from the database definitions in dbstructure.php
- *
- * This process must only be started once, since the value is cached.
- */
- private static function build_relation_data() {
- $definition = db_definition();
-
- foreach ($definition AS $table => $structure) {
- foreach ($structure['fields'] AS $field => $field_struct) {
- if (isset($field_struct['relation'])) {
- foreach ($field_struct['relation'] AS $rel_table => $rel_field) {
- self::$relation[$rel_table][$rel_field][$table][] = $field;
- }
- }
- }
- }
- }
-
- /**
- * @brief Delete a row from a table
- *
- * @param string $table Table name
- * @param array $param parameter array
- * @param boolean $in_process Internal use: Only do a commit after the last delete
- * @param array $callstack Internal use: prevent endless loops
- *
- * @return boolean|array was the delete successfull? When $in_process is set: deletion data
- */
- public static function delete($table, $param, $in_process = false, &$callstack = array()) {
-
- $commands = array();
-
- // Create a key for the loop prevention
- $key = $table.':'.implode(':', array_keys($param)).':'.implode(':', $param);
-
- // We quit when this key already exists in the callstack.
- if (isset($callstack[$key])) {
- return $commands;
- }
-
- $callstack[$key] = true;
-
- $table = self::$dbo->escape($table);
-
- $commands[$key] = array('table' => $table, 'param' => $param);
-
- // To speed up the whole process we cache the table relations
- if (count(self::$relation) == 0) {
- self::build_relation_data();
- }
-
- // Is there a relation entry for the table?
- if (isset(self::$relation[$table])) {
- // We only allow a simple "one field" relation.
- $field = array_keys(self::$relation[$table])[0];
- $rel_def = array_values(self::$relation[$table])[0];
-
- // Create a key for preventing double queries
- $qkey = $field.'-'.$table.':'.implode(':', array_keys($param)).':'.implode(':', $param);
-
- // When the search field is the relation field, we don't need to fetch the rows
- // This is useful when the leading record is already deleted in the frontend but the rest is done in the backend
- if ((count($param) == 1) && ($field == array_keys($param)[0])) {
- foreach ($rel_def AS $rel_table => $rel_fields) {
- foreach ($rel_fields AS $rel_field) {
- $retval = self::delete($rel_table, array($rel_field => array_values($param)[0]), true, $callstack);
- $commands = array_merge($commands, $retval);
- }
- }
- // We quit when this key already exists in the callstack.
- } elseif (!isset($callstack[$qkey])) {
-
- $callstack[$qkey] = true;
-
- // Fetch all rows that are to be deleted
- $data = self::select($table, array($field), $param);
-
- while ($row = self::fetch($data)) {
- // Now we accumulate the delete commands
- $retval = self::delete($table, array($field => $row[$field]), true, $callstack);
- $commands = array_merge($commands, $retval);
- }
-
- self::close($data);
-
- // Since we had split the delete command we don't need the original command anymore
- unset($commands[$key]);
- }
- }
-
- if (!$in_process) {
- // Now we finalize the process
- $do_transaction = !self::$in_transaction;
-
- if ($do_transaction) {
- self::transaction();
- }
-
- $compacted = array();
- $counter = array();
-
- foreach ($commands AS $command) {
- $condition = $command['param'];
- $array_element = each($condition);
- $array_key = $array_element['key'];
- if (is_int($array_key)) {
- $condition_string = " WHERE ".array_shift($condition);
- } else {
- $condition_string = " WHERE `".implode("` = ? AND `", array_keys($condition))."` = ?";
- }
-
- if ((count($command['param']) > 1) || is_int($array_key)) {
- $sql = "DELETE FROM `".$command['table']."`".$condition_string;
- logger(self::replace_parameters($sql, $condition), LOGGER_DATA);
-
- if (!self::e($sql, $condition)) {
- if ($do_transaction) {
- self::rollback();
- }
- return false;
- }
- } else {
- $key_table = $command['table'];
- $key_param = array_keys($command['param'])[0];
- $value = array_values($command['param'])[0];
-
- // Split the SQL queries in chunks of 100 values
- // We do the $i stuff here to make the code better readable
- $i = $counter[$key_table][$key_param];
- if (count($compacted[$key_table][$key_param][$i]) > 100) {
- ++$i;
- }
-
- $compacted[$key_table][$key_param][$i][$value] = $value;
- $counter[$key_table][$key_param] = $i;
- }
- }
- foreach ($compacted AS $table => $values) {
- foreach ($values AS $field => $field_value_list) {
- foreach ($field_value_list AS $field_values) {
- $sql = "DELETE FROM `".$table."` WHERE `".$field."` IN (".
- substr(str_repeat("?, ", count($field_values)), 0, -2).");";
-
- logger(self::replace_parameters($sql, $field_values), LOGGER_DATA);
-
- if (!self::e($sql, $field_values)) {
- if ($do_transaction) {
- self::rollback();
- }
- return false;
- }
- }
- }
- }
- if ($do_transaction) {
- self::commit();
- }
- return true;
- }
-
- return $commands;
- }
-
- /**
- * @brief Updates rows
- *
- * Updates rows in the database. When $old_fields is set to an array,
- * the system will only do an update if the fields in that array changed.
- *
- * Attention:
- * Only the values in $old_fields are compared.
- * This is an intentional behaviour.
- *
- * Example:
- * We include the timestamp field in $fields but not in $old_fields.
- * Then the row will only get the new timestamp when the other fields had changed.
- *
- * When $old_fields is set to a boolean value the system will do this compare itself.
- * When $old_fields is set to "true" the system will do an insert if the row doesn't exists.
- *
- * Attention:
- * Only set $old_fields to a boolean value when you are sure that you will update a single row.
- * When you set $old_fields to "true" then $fields must contain all relevant fields!
- *
- * @param string $table Table name
- * @param array $fields contains the fields that are updated
- * @param array $condition condition array with the key values
- * @param array|boolean $old_fields array with the old field values that are about to be replaced (true = update on duplicate)
- *
- * @return boolean was the update successfull?
- */
- public static function update($table, $fields, $condition, $old_fields = array()) {
-
- $table = self::$dbo->escape($table);
-
- if (count($condition) > 0) {
- $array_element = each($condition);
- $array_key = $array_element['key'];
- if (is_int($array_key)) {
- $condition_string = " WHERE ".array_shift($condition);
- } else {
- $condition_string = " WHERE `".implode("` = ? AND `", array_keys($condition))."` = ?";
- }
- } else {
- $condition_string = "";
- }
-
- if (is_bool($old_fields)) {
- $do_insert = $old_fields;
-
- $old_fields = self::select($table, array(), $condition, array('limit' => 1));
-
- if (is_bool($old_fields)) {
- if ($do_insert) {
- $values = array_merge($condition, $fields);
- return self::insert($table, $values, $do_insert);
- }
- $old_fields = array();
- }
- }
-
- $do_update = (count($old_fields) == 0);
-
- foreach ($old_fields AS $fieldname => $content) {
- if (isset($fields[$fieldname])) {
- if ($fields[$fieldname] == $content) {
- unset($fields[$fieldname]);
- } else {
- $do_update = true;
- }
- }
- }
-
- if (!$do_update || (count($fields) == 0)) {
- return true;
- }
-
- $sql = "UPDATE `".$table."` SET `".
- implode("` = ?, `", array_keys($fields))."` = ?".$condition_string;
-
- $params1 = array_values($fields);
- $params2 = array_values($condition);
- $params = array_merge_recursive($params1, $params2);
-
- return self::e($sql, $params);
- }
-
- /**
- * @brief Select rows from a table
- *
- * @param string $table Table name
- * @param array $fields array of selected fields
- * @param array $condition array of fields for condition
- * @param array $params array of several parameters
- *
- * @return boolean|object If "limit" is equal "1" only a single row is returned, else a query object is returned
- *
- * Example:
- * $table = "item";
- * $fields = array("id", "uri", "uid", "network");
- *
- * $condition = array("uid" => 1, "network" => 'dspr');
- * or:
- * $condition = array("`uid` = ? AND `network` IN (?, ?)", 1, 'dfrn', 'dspr');
- *
- * $params = array("order" => array("id", "received" => true), "limit" => 1);
- *
- * $data = dba::select($table, $fields, $condition, $params);
- */
- public static function select($table, $fields = array(), $condition = array(), $params = array()) {
- if ($table == '') {
- return false;
- }
-
- if (count($fields) > 0) {
- $select_fields = "`".implode("`, `", array_values($fields))."`";
- } else {
- $select_fields = "*";
- }
-
- if (count($condition) > 0) {
- $array_element = each($condition);
- $array_key = $array_element['key'];
- if (is_int($array_key)) {
- $condition_string = " WHERE ".array_shift($condition);
- } else {
- $condition_string = " WHERE `".implode("` = ? AND `", array_keys($condition))."` = ?";
- }
- } else {
- $condition_string = "";
- }
-
- $param_string = '';
- $single_row = false;
-
- if (isset($params['order'])) {
- $param_string .= " ORDER BY ";
- foreach ($params['order'] AS $fields => $order) {
- if (!is_int($fields)) {
- $param_string .= "`".$fields."` ".($order ? "DESC" : "ASC").", ";
- } else {
- $param_string .= "`".$order."`, ";
- }
- }
- $param_string = substr($param_string, 0, -2);
- }
-
- if (isset($params['limit']) && is_int($params['limit'])) {
- $param_string .= " LIMIT ".$params['limit'];
- $single_row = ($params['limit'] == 1);
- }
-
- if (isset($params['only_query']) && $params['only_query']) {
- $single_row = !$params['only_query'];
- }
-
- $sql = "SELECT ".$select_fields." FROM `".$table."`".$condition_string.$param_string;
-
- $result = self::p($sql, $condition);
-
- if (is_bool($result) || !$single_row) {
- return $result;
- } else {
- $row = self::fetch($result);
- self::close($result);
- return $row;
- }
- }
-
-
- /**
- * @brief Fills an array with data from a query
- *
- * @param object $stmt statement object
- * @return array Data array
- */
- public static function inArray($stmt, $do_close = true) {
- if (is_bool($stmt)) {
- return $stmt;
- }
-
- $data = array();
- while ($row = self::fetch($stmt)) {
- $data[] = $row;
- }
- if ($do_close) {
- self::close($stmt);
- }
- return $data;
- }
-
- /**
- * @brief Returns the error number of the last query
- *
- * @return string Error number (0 if no error)
- */
- public static function errorNo() {
- return self::$dbo->errorno;
- }
-
- /**
- * @brief Returns the error message of the last query
- *
- * @return string Error message ('' if no error)
- */
- public static function errorMessage() {
- return self::$dbo->error;
- }
-
- /**
- * @brief Closes the current statement
- *
- * @param object $stmt statement object
- * @return boolean was the close successfull?
- */
- public static function close($stmt) {
- if (!is_object($stmt)) {
- return false;
- }
-
- switch (self::$dbo->driver) {
- case 'pdo':
- return $stmt->closeCursor();
- case 'mysqli':
- return $stmt->free_result();
- return $stmt->close();
- case 'mysql':
- return mysql_free_result($stmt);
- }
- }
-}
-
-function dbesc($str) {
- global $db;
-
- if ($db && $db->connected) {
- return($db->escape($str));
- } else {
- return(str_replace("'","\\'",$str));
- }
-}
+use Friendica\Database\DBA;
/**
- * @brief execute SQL query with printf style args - deprecated
+ * execute SQL query with printf style args - deprecated
*
- * Please use the dba:: functions instead:
- * dba::select, dba::exists, dba::insert
- * dba::delete, dba::update, dba::p, dba::e
+ * Please use the DBA:: functions instead:
+ * DBA::select, DBA::exists, DBA::insert
+ * DBA::delete, DBA::update, DBA::p, DBA::e
*
- * @param $args Query parameters (1 to N parameters of different types)
- * @return array Query array
+ * @param $sql
+ * @return array|bool Query array
+ * @throws Exception
+ * @deprecated
*/
function q($sql) {
- global $db;
-
$args = func_get_args();
unset($args[0]);
- if (!$db || !$db->connected) {
+ if (!DBA::connected()) {
return false;
}
- $sql = $db->clean_query($sql);
- $sql = $db->any_value_fallback($sql);
+ $sql = DBA::cleanQuery($sql);
+ $sql = DBA::anyValueFallback($sql);
$stmt = @vsprintf($sql, $args);
- $ret = dba::p($stmt);
+ $ret = DBA::p($stmt);
if (is_bool($ret)) {
return $ret;
}
- $columns = dba::columnCount($ret);
+ $columns = DBA::columnCount($ret);
- $data = dba::inArray($ret);
+ $data = DBA::toArray($ret);
if ((count($data) == 0) && ($columns == 0)) {
return true;
return $data;
}
-
-function dba_timer() {
- return microtime(true);
-}
projects / friendica.git / blobdiff