]> git.mxchange.org Git - friendica.git/blobdiff - include/dba.php
Replace global $a with BaseObject::getApp()
[friendica.git] / include / dba.php
index 38760a6c9e978bf3ddac1f87dcb5f95e297c610b..f6120f673fb63b1e0bd69e6f1953ac0393b4fa1c 100644 (file)
@@ -1,7 +1,9 @@
 <?php
 
-use Friendica\App;
-use Friendica\Core\L10n;
+// Do not use Core\Config in this class at risk of infinite loop.
+// Please use App->getConfigVariable() instead.
+//use Friendica\Core\Config;
+
 use Friendica\Core\System;
 use Friendica\Database\DBM;
 use Friendica\Database\DBStructure;
@@ -29,21 +31,20 @@ class dba {
        private static $db_user = '';
        private static $db_pass = '';
        private static $db_name = '';
+       private static $db_charset = '';
 
-       public static function connect($serveraddr, $user, $pass, $db) {
+       public static function connect($serveraddr, $user, $pass, $db, $charset = null)
+       {
                if (!is_null(self::$db) && self::connected()) {
                        return true;
                }
 
-               $a = get_app();
-
-               $stamp1 = microtime(true);
-
                // We are storing these values for being able to perform a reconnect
                self::$db_serveraddr = $serveraddr;
                self::$db_user = $user;
                self::$db_pass = $pass;
                self::$db_name = $db;
+               self::$db_charset = $charset;
 
                $serveraddr = trim($serveraddr);
 
@@ -58,6 +59,7 @@ class dba {
                $user = trim($user);
                $pass = trim($pass);
                $db = trim($db);
+               $charset = trim($charset);
 
                if (!(strlen($server) && strlen($user))) {
                        return false;
@@ -71,14 +73,13 @@ class dba {
                                $connect .= ";port=".$port;
                        }
 
-                       if (isset($a->config["system"]["db_charset"])) {
-                               $connect .= ";charset=".$a->config["system"]["db_charset"];
+                       if ($charset) {
+                               $connect .= ";charset=".$charset;
                        }
+
                        try {
                                self::$db = @new PDO($connect, $user, $pass);
-                               // Needs more testing
-                               //self::$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
-                               //self::$db->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, false);
+                               self::$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
                                self::$connected = true;
                        } catch (PDOException $e) {
                        }
@@ -90,8 +91,8 @@ class dba {
                        if (!mysqli_connect_errno()) {
                                self::$connected = true;
 
-                               if (isset($a->config["system"]["db_charset"])) {
-                                       self::$db->set_charset($a->config["system"]["db_charset"]);
+                               if ($charset) {
+                                       self::$db->set_charset($charset);
                                }
                        }
                }
@@ -101,7 +102,6 @@ class dba {
                        self::$driver = null;
                        self::$db = null;
                }
-               $a->save_timestamp($stamp1, "network");
 
                return self::$connected;
        }
@@ -132,7 +132,7 @@ class dba {
        public static function reconnect() {
                self::disconnect();
 
-               $ret = self::connect(self::$db_serveraddr, self::$db_user, self::$db_pass, self::$db_name);
+               $ret = self::connect(self::$db_serveraddr, self::$db_user, self::$db_pass, self::$db_name, self::$db_charset);
                return $ret;
        }
 
@@ -186,7 +186,7 @@ class dba {
        private static function logIndex($query) {
                $a = get_app();
 
-               if (empty($a->config["system"]["db_log_index"])) {
+               if (empty(Config::get('system', 'db_log_index'))) {
                        return;
                }
 
@@ -205,18 +205,18 @@ class dba {
                        return;
                }
 
-               $watchlist = explode(',', $a->config["system"]["db_log_index_watch"]);
-               $blacklist = explode(',', $a->config["system"]["db_log_index_blacklist"]);
+               $watchlist = explode(',', Config::get('system', 'db_log_index_watch'));
+               $blacklist = explode(',', Config::get('system', 'db_log_index_blacklist'));
 
                while ($row = dba::fetch($r)) {
-                       if ((intval($a->config["system"]["db_loglimit_index"]) > 0)) {
+                       if ((intval(Config::get('system', 'db_loglimit_index')) > 0)) {
                                $log = (in_array($row['key'], $watchlist) &&
-                                       ($row['rows'] >= intval($a->config["system"]["db_loglimit_index"])));
+                                       ($row['rows'] >= intval(Config::get('system', 'db_loglimit_index'))));
                        } else {
                                $log = false;
                        }
 
-                       if ((intval($a->config["system"]["db_loglimit_index_high"]) > 0) && ($row['rows'] >= intval($a->config["system"]["db_loglimit_index_high"]))) {
+                       if ((intval(Config::get('system', 'db_loglimit_index_high')) > 0) && ($row['rows'] >= intval(Config::get('system', 'db_loglimit_index_high')))) {
                                $log = true;
                        }
 
@@ -226,7 +226,7 @@ class dba {
 
                        if ($log) {
                                $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
-                               @file_put_contents($a->config["system"]["db_log_index"], DateTimeFormat::utcNow()."\t".
+                               @file_put_contents(Config::get('system', 'db_log_index'), DateTimeFormat::utcNow()."\t".
                                                $row['key']."\t".$row['rows']."\t".$row['Extra']."\t".
                                                basename($backtrace[1]["file"])."\t".
                                                $backtrace[1]["line"]."\t".$backtrace[2]["function"]."\t".
@@ -352,7 +352,7 @@ class dba {
         * For all regular queries please use dba::select or dba::exists
         *
         * @param string $sql SQL statement
-        * @return bool|object statement object
+        * @return bool|object statement object or result object
         */
        public static function p($sql) {
                $a = get_app();
@@ -386,7 +386,7 @@ class dba {
 
                $orig_sql = $sql;
 
-               if (x($a->config,'system') && x($a->config['system'], 'db_callstack')) {
+               if ($a->getConfigValue('system', 'db_callstack')) {
                        $sql = "/*".System::callstack()." */ ".$sql;
                }
 
@@ -547,16 +547,15 @@ class dba {
 
                $a->save_timestamp($stamp1, 'database');
 
-               if (x($a->config,'system') && x($a->config['system'], 'db_log')) {
-
+               if ($a->getConfigValue('system', 'db_log')) {
                        $stamp2 = microtime(true);
                        $duration = (float)($stamp2 - $stamp1);
 
-                       if (($duration > $a->config["system"]["db_loglimit"])) {
+                       if (($duration > $a->getConfigValue('system', 'db_loglimit'))) {
                                $duration = round($duration, 3);
                                $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
 
-                               @file_put_contents($a->config["system"]["db_log"], DateTimeFormat::utcNow()."\t".$duration."\t".
+                               @file_put_contents($a->getConfigValue('system', 'db_log'), DateTimeFormat::utcNow()."\t".$duration."\t".
                                                basename($backtrace[1]["file"])."\t".
                                                $backtrace[1]["line"]."\t".$backtrace[2]["function"]."\t".
                                                substr(self::replaceParameters($sql, $args), 0, 2000)."\n", FILE_APPEND);
@@ -843,10 +842,25 @@ class dba {
         */
        public static function lock($table) {
                // See here: https://dev.mysql.com/doc/refman/5.7/en/lock-tables-and-transactions.html
-               self::e("SET autocommit=0");
+               if (self::$driver == 'pdo') {
+                       self::e("SET autocommit=0");
+                       self::$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);
+               } else {
+                       self::$db->autocommit(false);
+               }
+
                $success = self::e("LOCK TABLES `".self::escape($table)."` WRITE");
+
+               if (self::$driver == 'pdo') {
+                       self::$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
+               }
+
                if (!$success) {
-                       self::e("SET autocommit=1");
+                       if (self::$driver == 'pdo') {
+                               self::e("SET autocommit=1");
+                       } else {
+                               self::$db->autocommit(true);
+                       }
                } else {
                        self::$in_transaction = true;
                }
@@ -860,9 +874,21 @@ class dba {
         */
        public static function unlock() {
                // See here: https://dev.mysql.com/doc/refman/5.7/en/lock-tables-and-transactions.html
-               self::e("COMMIT");
+               self::performCommit();
+
+               if (self::$driver == 'pdo') {
+                       self::$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);
+               }
+
                $success = self::e("UNLOCK TABLES");
-               self::e("SET autocommit=1");
+
+               if (self::$driver == 'pdo') {
+                       self::$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
+                       self::e("SET autocommit=1");
+               } else {
+                       self::$db->autocommit(true);
+               }
+
                self::$in_transaction = false;
                return $success;
        }
@@ -873,23 +899,51 @@ class dba {
         * @return boolean Was the command executed successfully?
         */
        public static function transaction() {
-               if (!self::e('COMMIT')) {
+               if (!self::performCommit()) {
                        return false;
                }
-               if (!self::e('START TRANSACTION')) {
-                       return false;
+
+               switch (self::$driver) {
+                       case 'pdo':
+                               if (self::$db->inTransaction()) {
+                                       break;
+                               }
+                               if (!self::$db->beginTransaction()) {
+                                       return false;
+                               }
+                               break;
+                       case 'mysqli':
+                               if (!self::$db->begin_transaction()) {
+                                       return false;
+                               }
+                               break;
                }
+
                self::$in_transaction = true;
                return true;
        }
 
+       private static function performCommit()
+       {
+               switch (self::$driver) {
+                       case 'pdo':
+                               if (!self::$db->inTransaction()) {
+                                       return true;
+                               }
+                               return self::$db->commit();
+                       case 'mysqli':
+                               return self::$db->commit();
+               }
+               return true;
+       }
+
        /**
         * @brief Does a commit
         *
         * @return boolean Was the command executed successfully?
         */
        public static function commit() {
-               if (!self::e('COMMIT')) {
+               if (!self::performCommit()) {
                        return false;
                }
                self::$in_transaction = false;
@@ -902,11 +956,22 @@ class dba {
         * @return boolean Was the command executed successfully?
         */
        public static function rollback() {
-               if (!self::e('ROLLBACK')) {
-                       return false;
+               $ret = false;
+
+               switch (self::$driver) {
+                       case 'pdo':
+                               if (!self::$db->inTransaction()) {
+                                       $ret = true;
+                                       break;
+                               }
+                               $ret = self::$db->rollBack();
+                               break;
+                       case 'mysqli':
+                               $ret = self::$db->rollback();
+                               break;
                }
                self::$in_transaction = false;
-               return true;
+               return $ret;
        }
 
        /**
@@ -953,7 +1018,7 @@ class dba {
                $commands = [];
 
                // Create a key for the loop prevention
-               $key = $table . ':' . implode(':', array_keys($conditions)) . ':' . implode(':', $conditions);
+               $key = $table . ':' . json_encode($conditions);
 
                // We quit when this key already exists in the callstack.
                if (isset($callstack[$key])) {
@@ -980,7 +1045,7 @@ class dba {
                        $rel_def = array_values(self::$relation[$table])[0];
 
                        // Create a key for preventing double queries
-                       $qkey = $field . '-' . $table . ':' . implode(':', array_keys($conditions)) . ':' . implode(':', $conditions);
+                       $qkey = $field . '-' . $table . ':' . json_encode($conditions);
 
                        // 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
@@ -1047,7 +1112,7 @@ class dba {
 
                                        // 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_condition];
+                                       $i = isset($counter[$key_table][$key_condition]) ? $counter[$key_table][$key_condition] : 0;
                                        if (isset($compacted[$key_table][$key_condition][$i]) && count($compacted[$key_table][$key_condition][$i]) > 100) {
                                                ++$i;
                                        }
@@ -1299,37 +1364,28 @@ class dba {
                                                $condition_string .= " AND ";
                                        }
                                        if (is_array($value)) {
-                                               // Check if there are integer values in the parameters
+                                               /* Workaround for MySQL Bug #64791.
+                                                * Never mix data types inside any IN() condition.
+                                                * In case of mixed types, cast all as string.
+                                                * Logic needs to be consistent with dba::p() data types.
+                                                */
                                                $is_int = false;
-                                               $is_float = false;
                                                $is_alpha = false;
                                                foreach ($value as $single_value) {
                                                        if (is_int($single_value)) {
                                                                $is_int = true;
-                                                       }
-
-                                                       // To prevent to round floats we look for them
-                                                       if (round($single_value) != (float)$single_value) {
-                                                               $is_float = true;
-                                                       }
-
-                                                       // Is any non numeric value present?
-                                                       if (!is_numeric($single_value)) {
+                                                       } else {
                                                                $is_alpha = true;
                                                        }
                                                }
 
-                                               // Cast them all in an unique method
-                                               if ($is_int) {
-                                                       $casted = [];
-                                                       foreach ($value as $single_value) {
-                                                               if (!$is_alpha && !$is_float) {
-                                                                       $casted[] = (int)$single_value;
-                                                               } else {
-                                                                       $casted[] = (string)$single_value;
+                                               if ($is_int && $is_alpha) {
+                                                       foreach ($value as &$ref) {
+                                                               if (is_int($ref)) {
+                                                                       $ref = (string)$ref;
                                                                }
                                                        }
-                                                       $value = $casted;
+                                                       unset($ref); //Prevent accidental re-use.
                                                }
 
                                                $new_values = array_merge($new_values, array_values($value));
@@ -1440,8 +1496,18 @@ class dba {
                                $ret = $stmt->closeCursor();
                                break;
                        case 'mysqli':
-                               $stmt->free_result();
-                               $ret = $stmt->close();
+                               // MySQLi offers both a mysqli_stmt and a mysqli_result class.
+                               // We should be careful not to assume the object type of $stmt
+                               // because dba::p() has been able to return both types.
+                               if ($stmt instanceof mysqli_stmt) {
+                                       $stmt->free_result();
+                                       $ret = $stmt->close();
+                               } elseif ($stmt instanceof mysqli_result) {
+                                       $stmt->free();
+                                       $ret = true;
+                               } else {
+                                       $ret = false;
+                               }
                                break;
                }