X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=include%2Fdba.php;h=c7b598f2d68e09ed2f3a9ead81d25d23f00d7265;hb=fd3cf1cd02b57e9796e5537dbee468d1c8048a48;hp=ad33705bf14bfa1ac45741d48fe3223a96e9fd7e;hpb=50e45f6942680ddf5e7e17d88bb35aa54746df32;p=friendica.git

diff --git a/include/dba.php b/include/dba.php
index ad33705bf1..c7b598f2d6 100644
--- a/include/dba.php
+++ b/include/dba.php
@@ -1,28 +1,43 @@
 <?php
+require_once("dbm.php");
+
+# if PDO is avaible for mysql, use the new database abstraction
+# TODO: PDO is disabled for release 3.3. We need to investigate why
+# the update from 3.2 fails with pdo
+/*
+if(class_exists('\PDO') && in_array('mysql', PDO::getAvailableDrivers())) {
+  require_once("library/dddbl2/dddbl.php");
+  require_once("include/dba_pdo.php");
+}
+*/
+
 
 require_once('include/datetime.php');
 
 /**
- *
- * MySQL database class
+ * @class MySQL database class
  *
  * For debugging, insert 'dbg(1);' anywhere in the program flow.
  * dbg(0); will turn it off. Logging is performed at LOGGER_DATA level.
- * When logging, all binary info is converted to text and html entities are escaped so that 
+ * When logging, all binary info is converted to text and html entities are escaped so that
  * the debugging stream is safe to view within both terminals and web pages.
  *
  */
- 
-if(! class_exists('dba')) { 
+
+if(! class_exists('dba')) {
 class dba {
 
 	private $debug = 0;
 	private $db;
+	private $result;
 	public  $mysqli = true;
 	public  $connected = false;
 	public  $error = false;
 
 	function __construct($server,$user,$pass,$db,$install = false) {
+		global $a;
+
+		$stamp1 = microtime(true);
 
 		$server = trim($server);
 		$user = trim($user);
@@ -51,6 +66,8 @@ class dba {
 			if(! mysqli_connect_errno()) {
 				$this->connected = true;
 			}
+			if (isset($a->config["system"]["db_charset"]))
+				$this->db->set_charset($a->config["system"]["db_charset"]);
 		}
 		else {
 			$this->mysqli = false;
@@ -58,19 +75,57 @@ class dba {
 			if($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);
 		}
 		if(! $this->connected) {
 			$this->db = null;
 			if(! $install)
 				system_unavailable();
 		}
+
+		$a->save_timestamp($stamp1, "network");
 	}
 
 	public function getdb() {
 		return $this->db;
 	}
 
-	public function q($sql) {
+	/**
+	 * @brief Returns the MySQL server version string
+	 * 
+	 * This function discriminate between the deprecated mysql API and the current
+	 * object-oriented mysqli API. Example of returned string: 5.5.46-0+deb8u1
+	 *
+	 * @return string
+	 */
+	public function server_info() {
+		if ($this->mysqli) {
+			$return = $this->db->server_info;
+		} else {
+			$return = mysql_get_server_info($this->db);
+		}
+		return $return;
+	}
+
+	/**
+	 * @brief Returns the number of rows
+	 *
+	 * @return string
+	 */
+	public function num_rows() {
+		if (!$this->result)
+			return 0;
+
+		if ($this->mysqli) {
+			$return = $this->result->num_rows;
+		} else {
+			$return = mysql_num_rows($this->result);
+		}
+		return $return;
+	}
+
+	public function q($sql, $onlyquery = false) {
 		global $a;
 
 		if((! $this->db) || (! $this->connected))
@@ -78,20 +133,36 @@ class dba {
 
 		$this->error = '';
 
-		if(x($a->config,'system') && x($a->config['system'],'db_log'))
-			$stamp1 = microtime(true);
+		// Check the connection (This can reconnect the connection - if configured)
+		if ($this->mysqli)
+			$connected = $this->db->ping();
+		else
+			$connected = mysql_ping($this->db);
+
+		$connstr = ($connected ? "Connected": "Disonnected");
+
+		$stamp1 = microtime(true);
+
+		$sql = "/*".$a->callstack()." */ ".$sql;
 
 		if($this->mysqli)
 			$result = @$this->db->query($sql);
 		else
 			$result = @mysql_query($sql,$this->db);
 
+		$stamp2 = microtime(true);
+		$duration = (float)($stamp2-$stamp1);
+
+		$a->save_timestamp($stamp1, "database");
+
+		if (strtolower(substr($sql, 0, 6)) != "select")
+			$a->save_timestamp($stamp1, "database_write");
+
 		if(x($a->config,'system') && x($a->config['system'],'db_log')) {
-			$stamp2 = microtime(true);
-			$duration = round($stamp2-$stamp1, 3);
-			if ($duration > $a->config["system"]["db_loglimit"]) {
+			if (($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"], $duration."\t".
+				@file_put_contents($a->config["system"]["db_log"], datetime_convert()."\t".$duration."\t".
 						basename($backtrace[1]["file"])."\t".
 						$backtrace[1]["line"]."\t".$backtrace[2]["function"]."\t".
 						substr($sql, 0, 2000)."\n", FILE_APPEND);
@@ -99,14 +170,17 @@ class dba {
 		}
 
 		if($this->mysqli) {
-			if($this->db->errno)
+			if($this->db->errno) {
 				$this->error = $this->db->error;
+				$this->errorno = $this->db->errno;
+			}
+		} elseif(mysql_errno($this->db)) {
+			$this->error = mysql_error($this->db);
+			$this->errorno = mysql_errno($this->db);
 		}
-		elseif(mysql_errno($this->db))
-				$this->error = mysql_error($this->db);
 
 		if(strlen($this->error)) {
-			logger('dba: ' . $this->error);
+			logger('DB Error ('.$connstr.') '.$this->errorno.': '.$this->error);
 		}
 
 		if($this->debug) {
@@ -146,6 +220,11 @@ class dba {
 		if(($result === true) || ($result === false))
 			return $result;
 
+		if ($onlyquery) {
+			$this->result = $result;
+			return true;
+		}
+
 		$r = array();
 		if($this->mysqli) {
 			if($result->num_rows) {
@@ -162,12 +241,37 @@ class dba {
 			}
 		}
 
+		//$a->save_timestamp($stamp1, "database");
 
 		if($this->debug)
 			logger('dba: ' . printable(print_r($r, true)));
 		return($r);
 	}
 
+	public function qfetch() {
+		$x = false;
+
+		if ($this->result)
+			if($this->mysqli) {
+				if($this->result->num_rows)
+					$x = $this->result->fetch_array(MYSQLI_ASSOC);
+			} else {
+				if(mysql_num_rows($this->result))
+					$x = mysql_fetch_array($this->result, MYSQL_ASSOC);
+			}
+
+		return($x);
+	}
+
+	public function qclose() {
+		if ($this->result)
+			if($this->mysqli) {
+				$this->result->free_result();
+			} else {
+				mysql_free_result($this->result);
+			}
+	}
+
 	public function dbg($dbg) {
 		$this->debug = $dbg;
 	}
@@ -181,8 +285,17 @@ class dba {
 		}
 	}
 
+	function connected() {
+		if ($this->mysqli)
+			$connected = $this->db->ping();
+		else
+			$connected = mysql_ping($this->db);
+
+		return $connected;
+	}
+
 	function __destruct() {
-		if ($this->db) 
+		if ($this->db)
 			if($this->mysqli)
 				$this->db->close();
 			else
@@ -200,14 +313,14 @@ function printable($s) {
 }}
 
 // Procedural functions
-if(! function_exists('dbg')) { 
+if(! function_exists('dbg')) {
 function dbg($state) {
 	global $db;
 	if($db)
 	$db->dbg($state);
 }}
 
-if(! function_exists('dbesc')) { 
+if(! function_exists('dbesc')) {
 function dbesc($str) {
 	global $db;
 	if($db && $db->connected)
@@ -223,7 +336,7 @@ function dbesc($str) {
 // Example: $r = q("SELECT * FROM `%s` WHERE `uid` = %d",
 //                   'user', 1);
 
-if(! function_exists('q')) { 
+if(! function_exists('q')) {
 function q($sql) {
 
 	global $db;
@@ -240,22 +353,58 @@ function q($sql) {
 
 	/**
 	 *
-	 * This will happen occasionally trying to store the 
-	 * session data after abnormal program termination 
+	 * This will happen occasionally trying to store the
+	 * session data after abnormal program termination
 	 *
 	 */
 	logger('dba: no database: ' . print_r($args,true));
-	return false; 
+	return false;
 
 }}
 
+/**
+ * @brief Performs a query with "dirty reads"
+ *
+ * By doing dirty reads (reading uncommitted data) no locks are performed
+ * This function can be used to fetch data that doesn't need to be reliable.
+ *
+ * @param $args Query parameters (1 to N parameters of different types)
+ * @return array Query array
+ */
+function qu($sql) {
+
+	global $db;
+	$args = func_get_args();
+	unset($args[0]);
+
+	if($db && $db->connected) {
+		$stmt = @vsprintf($sql,$args); // Disabled warnings
+		if($stmt === false)
+			logger('dba: vsprintf error: ' . print_r(debug_backtrace(),true), LOGGER_DEBUG);
+		$db->q("SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;");
+		$retval = $db->q($stmt);
+		$db->q("COMMIT;");
+		return $retval;
+	}
+
+	/**
+	 *
+	 * This will happen occasionally trying to store the
+	 * session data after abnormal program termination
+	 *
+	 */
+	logger('dba: no database: ' . print_r($args,true));
+	return false;
+
+}
+
 /**
  *
  * Raw db query, no arguments
  *
  */
 
-if(! function_exists('dbq')) { 
+if(! function_exists('dbq')) {
 function dbq($sql) {
 
 	global $db;
@@ -267,10 +416,10 @@ function dbq($sql) {
 }}
 
 
-// Caller is responsible for ensuring that any integer arguments to 
+// Caller is responsible for ensuring that any integer arguments to
 // dbesc_array are actually integers and not malformed strings containing
-// SQL injection vectors. All integer array elements should be specifically 
-// cast to int to avoid trouble. 
+// SQL injection vectors. All integer array elements should be specifically
+// cast to int to avoid trouble.
 
 
 if(! function_exists('dbesc_array_cb')) {
@@ -291,4 +440,3 @@ function dbesc_array(&$arr) {
 function dba_timer() {
 	return microtime(true);
 }
-