From d87f76019fc231ec20d95126a7fee0487e7be5f0 Mon Sep 17 00:00:00 2001
From: tbrehm <t.brehm@ispconfig.org>
Date: Tue, 14 Aug 2012 10:56:20 -0400
Subject: [PATCH] - Added new web folder named private to web folder layout. The folder is intended to store data that shall not be visible in the web directory, it is owned by the user of the web. - Changed ownership of web root directory to root user in all security modes to prevent symlink attacks. - Apache log files are now owned by user root. - Improved functions in system library.

---
 interface/lib/classes/db_mysql.inc.php | 1047 +++++++++++++++++++++++++++++++--------------------------
 1 files changed, 567 insertions(+), 480 deletions(-)

diff --git a/interface/lib/classes/db_mysql.inc.php b/interface/lib/classes/db_mysql.inc.php
index 25ef131..8354be6 100644
--- a/interface/lib/classes/db_mysql.inc.php
+++ b/interface/lib/classes/db_mysql.inc.php
@@ -1,496 +1,583 @@
 <?php
 /*
-Copyright (c) 2005, Till Brehm, projektfarm Gmbh
-All rights reserved.
+   Copyright (c) 2005, Till Brehm, projektfarm Gmbh
+   All rights reserved.
 
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
+   Redistribution and use in source and binary forms, with or without modification,
+   are permitted provided that the following conditions are met:
 
-    * Redistributions of source code must retain the above copyright notice,
-      this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above copyright notice,
-      this list of conditions and the following disclaimer in the documentation
-      and/or other materials provided with the distribution.
-    * Neither the name of ISPConfig nor the names of its contributors
-      may be used to endorse or promote products derived from this software without
-      specific prior written permission.
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+ * Neither the name of ISPConfig nor the names of its contributors
+ may be used to endorse or promote products derived from this software without
+ specific prior written permission.
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
-INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
-OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
 
-	class db
-	{
-		var $dbHost = "";		// hostname of the MySQL server
-		var $dbName = "";		// logical database name on that server
-		var $dbUser = "";		// database authorized user
-		var $dbPass = "";		// user's password
-		var $linkId = 0;		// last result of mysql_connect()
-		var $queryId = 0;		// last result of mysql_query()
-		var $record	= array();	// last record fetched
-        var $autoCommit = 1;    // Autocommit Transactions
-		var $currentRow;		// current row number
-		var $errorNumber = 0;	// last error number
-		var $errorMessage = "";	// last error message
-		var $errorLocation = "";// last error location
-		var $show_error_messages = false;
+class db extends mysqli
+{
+  private $dbHost = '';		// hostname of the MySQL server
+  private $dbName = '';		// logical database name on that server
+  private $dbUser = '';		// database authorized user
+  private $dbPass = '';		// user's password
+  private $dbCharset = 'utf8';// Database charset
+  private $dbNewLink = false; // Return a new linkID when connect is called again
+  private $dbClientFlags = 0; // MySQL Client falgs
+  private $linkId = 0;		// last result of mysqli_connect()
+  private $queryId = 0;		// last result of mysqli_query()
+  private $record	= array();	// last record fetched
+  private $autoCommit = 1;    // Autocommit Transactions
+  private $currentRow;		// current row number
+  private $errorNumber = 0;	// last error number
+  public $errorMessage = '';	// last error message
+  private $errorLocation = '';// last error location
+  public $show_error_messages = true; // false in server, true in interface
 
-		// constructor
-		function db()
-		{
-			
-			global $conf;
-			$this->dbHost = $conf["db_host"];
-			$this->dbName = $conf["db_database"];
-			$this->dbUser = $conf["db_user"];
-			$this->dbPass = $conf["db_password"];
-			//$this->connect();
-		}
+  // constructor
+  public function __construct($prefix = '') {
+    global $conf;
+    if($prefix != '') $prefix .= '_';
+    $this->dbHost = $conf[$prefix.'db_host'];
+    $this->dbName = $conf[$prefix.'db_database'];
+    $this->dbUser = $conf[$prefix.'db_user'];
+    $this->dbPass = $conf[$prefix.'db_password'];
+    $this->dbCharset = $conf[$prefix.'db_charset'];
+    $this->dbNewLink = $conf[$prefix.'db_new_link'];
+    $this->dbClientFlags = $conf[$prefix.'db_client_flags'];
+    parent::__construct($conf[$prefix.'db_host'], $conf[$prefix.'db_user'],$conf[$prefix.'db_password'],$conf[$prefix.'db_database']);
+    if ($this->connect_error) {
+      $this->updateError('DB::__construct');
+      return false;
+    }
+    parent::query( 'SET NAMES '.$this->dbCharset); 
+    parent::query( "SET character_set_results = '".$this->dbCharset."', character_set_client = '".$this->dbCharset."', character_set_connection = '".$this->dbCharset."', character_set_database = '".$this->dbCharset."', character_set_server = '".$this->dbCharset."'");
 
-		// error handler
-		function updateError($location)
-		{
-			$this->errorNumber = mysql_errno();
-			$this->errorMessage = mysql_error();
-			$this->errorLocation = $location;
-			if($this->errorNumber && $this->show_error_messages)
-			{
-				echo('<br /><b>'.$this->errorLocation.'</b><br />'.$this->errorMessage);
-				flush();
-			}
-		}
+  }
 
-		function connect()
-		{
-			if($this->linkId == 0)
-			{
-				$this->linkId = mysql_connect($this->dbHost, $this->dbUser, $this->dbPass);
-				if(!$this->linkId)
-				{
-					$this->updateError('DB::connect()<br />mysql_connect');
-					return false;
-				}
-			}
-			return true;
-		}
+  public function __destruct() {
+    $this->close(); // helps avoid memory leaks, and persitent connections that don't go away.
+  }
 
-		function query($queryString)
-		{
-			if(!$this->connect())
-			{
-				return false;
-			}
-			if(!mysql_select_db($this->dbName, $this->linkId))
-			{
-				$this->updateError('DB::connect()<br />mysql_select_db');
-				return false;
-			}
-			$this->queryId = @mysql_query($queryString, $this->linkId);
-			$this->updateError('DB::query('.$queryString.')<br />mysql_query');
-			if(!$this->queryId)
-			{
-				return false;
-			}
-			$this->currentRow = 0;
-			return $this->queryId;
-		}
+  // error handler
+  public function updateError($location) {
+    global $app;
 
-		// returns all records in an array
-		function queryAllRecords($queryString)
-		{
-			if(!$this->query($queryString))
-			{
-				return false;
-			}
-			$ret = array();
-			while($line = $this->nextRecord())
-			{
-				$ret[] = $line;
-			}
-			return $ret;
-		}
+    if($this->connect_error) {
+      $this->errorNumber = $this->connect_errno;
+      $this->errorMessage = $this->connect_error;
+    } else {
+      $this->errorNumber = $this->errno;
+      $this->errorMessage = $this->error;
+    }
 
-		// returns one record in an array
-		function queryOneRecord($queryString)
-		{
-			if(!$this->query($queryString) || $this->numRows() == 0)
-			{
-				return false;
-			}
-			return $this->nextRecord();
-		}
+    $this->errorLocation = $location;
+    if($this->errorNumber) {
+      $error_msg = $this->errorLocation .' '. $this->errorMessage;
+      // This right here will allow us to use the samefile for server & interface
+      if($this->show_error_messages) {
+	echo $error_msg;
+      } else if(method_exists($app, 'log')) {
+	$app->log($error_msg, LOGLEVEL_WARN);
+      }
+    }
+  }
 
-		// returns the next record in an array
-		function nextRecord()
-		{
-            $this->record = mysql_fetch_assoc($this->queryId);
-			$this->updateError('DB::nextRecord()<br />mysql_fetch_array');
-			if(!$this->record || !is_array($this->record))
-			{
-				return false;
-			}
-			$this->currentRow++;
-			return $this->record;
-		}
+  public function query($queryString) {
+    $this->queryId = parent::query($queryString);
+    $this->updateError('DB::query('.$queryString.') -> mysqli_query');
+    if($this->errorNumber) debug_print_backtrace();
+    if(!$this->queryId) {
+      return false;
+    }
+    $this->currentRow = 0;
+    return $this->queryId;
+  }
 
-		// returns number of rows returned by the last select query
-		function numRows()
-		{
-			return mysql_num_rows($this->queryId);
-		}
-		
-		function affectedRows()
-		{
-			return mysql_affected_rows($this->linkId);
-		}
-		
-		// returns mySQL insert id
-		function insertID()
-		{
-			return mysql_insert_id($this->linkId);
-		}
-        
-        // Check der variablen
-		// deprecated, now use quote
-        function check($formfield)
-        {
-            return $this->quote($formfield);
-        }
-		
-		// Check der variablen
-        function quote($formfield)
-        {
-            return addslashes($formfield);
-        }
-		
-		// Check der variablen
-        function unquote($formfield)
-        {
-            return stripslashes($formfield);
-        }
-		
-		function toLower($record) {
-			if(is_array($record)) {
-				foreach($record as $key => $val) {
-					$key = strtolower($key);
-					$out[$key] = $val;
-				}
-			}
-		return $out;
-		}
-       
-       
-       function insert($tablename,$form,$debug = 0)
-       {
-         if(is_array($form)){
-	       foreach($form as $key => $value) 
-   		    {
-   		    $sql_key .= "$key, ";
-            $sql_value .= "'".$this->check($value)."', ";
-      		 }
-       	$sql_key = substr($sql_key,0,strlen($sql_key) - 2);
-        $sql_value = substr($sql_value,0,strlen($sql_value) - 2);
-        
-       	$sql = "INSERT INTO $tablename (" . $sql_key . ") VALUES (" . $sql_value .")";
-       
-      		 if($debug == 1) echo "SQL-Statement: ".$sql."<br><br>";
-      		 $this->query($sql);
-      		 if($debug == 1) echo "mySQL Error Message: ".$this->errorMessage;
-          }
-       }
-       
-       function update($tablename,$form,$bedingung,$debug = 0)
-       {
-       
-	     if(is_array($form)){
-           foreach($form as $key => $value) 
-   		    {
-   		    $insql .= "$key = '".$this->check($value)."', ";
-      		 }
-       	        $insql = substr($insql,0,strlen($insql) - 2);
-       	        $sql = "UPDATE $tablename SET " . $insql . " WHERE $bedingung";
-      		 if($debug == 1) echo "SQL-Statement: ".$sql."<br><br>";
-      		 $this->query($sql);
-      		 if($debug == 1) echo "mySQL Error Message: ".$this->errorMessage;
-           }
-       }
-       
-       function closeConn() {
-       
-       }
-       
-       function freeResult() {
-       
-       
-       }
-       
-       function delete() {
-       
-       }
-       
-       function Transaction($action) {
-       //action = begin, commit oder rollback
-       
-       }
-       
-       /*
-       $columns = array(action =>   add | alter | drop
-                        name =>     Spaltenname
-                        name_new => neuer Spaltenname, nur bei 'alter' belegt
-                        type =>     42go-Meta-Type: int16, int32, int64, double, char, varchar, text, blob
-                        typeValue => Wert z.B. bei Varchar
-                        defaultValue =>  Default Wert
-                        notNull =>   true | false
-                        autoInc =>   true | false
-                        option =>   unique | primary | index)
-       
-       
-       */
-       
-       function createTable($table_name,$columns) {
-       $index = "";
-       $sql = "CREATE TABLE $table_name (";
-       foreach($columns as $col){
-            $sql .= $col["name"]." ".$this->mapType($col["type"],$col["typeValue"])." ";
-       
-            if($col["defaultValue"] != "") {
-				if($col["defaultValue"] == "NULL" or $col["defaultValue"] == "NOT NULL") {
-					$sql .= "DEFAULT ".$col["defaultValue"]." ";
-				} else {
-					$sql .= "DEFAULT '".$col["defaultValue"]."' ";
-				}
-				
-			} elseif($col["defaultValue"] != false) {
-				$sql .= "DEFAULT '' ";
-			}
-			if($col["defaultValue"] != "NULL" && $col["defaultValue"] != "NOT NULL") {
-            	if($col["notNull"] == true) {
-                	$sql .= "NOT NULL ";
-            	} else {
-                	$sql .= "NULL ";
-            	}
-			}
-            if($col["autoInc"] == true) $sql .= "auto_increment ";
-            $sql.= ",";
-            // key Definitionen
-            if($col["option"] == "primary") $index .= "PRIMARY KEY (".$col["name"]."),";
-            if($col["option"] == "index") $index .= "INDEX (".$col["name"]."),";
-            if($col["option"] == "unique") $index .= "UNIQUE (".$col["name"]."),";
-       }
-       $sql .= $index;
-       $sql = substr($sql,0,-1);
-       $sql .= ")";
-       
-       $this->query($sql);
-       return true;
-       }
-       
-       /*
-       $columns = array(action =>   add | alter | drop
-                        name =>     Spaltenname
-                        name_new => neuer Spaltenname, nur bei 'alter' belegt
-                        type =>     42go-Meta-Type: int16, int32, int64, double, char, varchar, text, blob
-                        typeValue => Wert z.B. bei Varchar
-                        defaultValue =>  Default Wert
-                        notNull =>   true | false
-                        autoInc =>   true | false
-                        option =>   unique | primary | index)
-       
-       
-       */
-       function alterTable($table_name,$columns) {
-       $index = "";
-       $sql = "ALTER TABLE $table_name ";
-       foreach($columns as $col){
-            if($col["action"] == 'add') {
-                $sql .= "ADD ".$col["name"]." ".$this->mapType($col["type"],$col["typeValue"])." ";
-            } elseif ($col["action"] == 'alter') {
-                $sql .= "CHANGE ".$col["name"]." ".$col["name_new"]." ".$this->mapType($col["type"],$col["typeValue"])." ";
-            } elseif ($col["action"] == 'drop') {
-                $sql .= "DROP ".$col["name"]." ";
-            }
-            if($col["action"] != 'drop') {  
-            if($col["defaultValue"] != "") $sql .= "DEFAULT '".$col["defaultValue"]."' ";
-            if($col["notNull"] == true) {
-                $sql .= "NOT NULL ";
-            } else {
-                $sql .= "NULL ";
-            }
-            if($col["autoInc"] == true) $sql .= "auto_increment ";
-            $sql.= ",";
-            // key Definitionen
-            if($col["option"] == "primary") $index .= "PRIMARY KEY (".$col["name"]."),";
-            if($col["option"] == "index") $index .= "INDEX (".$col["name"]."),";
-            if($col["option"] == "unique") $index .= "UNIQUE (".$col["name"]."),";
-            }
-       }
-       $sql .= $index;
-       $sql = substr($sql,0,-1);
-       
-       //die($sql);
-       $this->query($sql);
-       return true;
-       }
-       
-       function dropTable($table_name) {
-       $this->check($table_name);
-       $sql = "DROP TABLE '". $table_name."'";
-       return $this->query($sql);
-       }
-       
-       // gibt Array mit Tabellennamen zur�ck
-       function getTables($database_name = '') {
-	   	
-			if($database_name == '') $database_name = $this->dbName;
-            $result = mysql_list_tables($database_name);
-            for ($i = 0; $i < mysql_num_rows($result); $i++) {
-                $tb_names[$i] = mysql_tablename($result, $i);
-            }
-            return $tb_names;       
-       }
-       
-       // gibt Feldinformationen zur Tabelle zur�ck
-       /*
-       $columns = array(action =>   add | alter | drop
-                        name =>     Spaltenname
-                        name_new => neuer Spaltenname, nur bei 'alter' belegt
-                        type =>     42go-Meta-Type: int16, int32, int64, double, char, varchar, text, blob
-                        typeValue => Wert z.B. bei Varchar
-                        defaultValue =>  Default Wert
-                        notNull =>   true | false
-                        autoInc =>   true | false
-                        option =>   unique | primary | index)
-       
-       
-       */
-       
-       function tableInfo($table_name) {
-       
-       global $go_api,$go_info;
-       // Tabellenfelder einlesen
-        
-        if($rows = $go_api->db->queryAllRecords("SHOW FIELDS FROM ".$table_name)){
-        foreach($rows as $row) {
-            $name = $row[0];
-            $default = $row[4];
-            $key = $row[3];
-            $extra = $row[5];
-            $isnull = $row[2];
-            $type = $row[1];
-        
-            
-            $column = array();
-        
-            $column["name"] = $name;
-            //$column["type"] = $type;
-            $column["defaultValue"] = $default;
-            if(stristr($key,"PRI")) $column["option"] = "primary";
-            if(stristr($isnull,"YES")) {
-                $column["notNull"] = false;
-            } else {
-               $column["notNull"] = true; 
-            }
-            if($extra == 'auto_increment') $column["autoInc"] = true;
-            
-            
-            // Type in Metatype umsetzen
-            
-            if(stristr($type,"int(")) $metaType = 'int32';
-            if(stristr($type,"bigint")) $metaType = 'int64';
-            if(stristr($type,"char")) {
-                $metaType = 'char';
-                $tmp_typeValue = explode('(',$type);
-                $column["typeValue"] = substr($tmp_typeValue[1],0,-1);  
-            }
-            if(stristr($type,"varchar")) {
-                $metaType = 'varchar';
-                $tmp_typeValue = explode('(',$type);
-                $column["typeValue"] = substr($tmp_typeValue[1],0,-1);  
-            }
-            if(stristr($type,"text")) $metaType = 'text';
-            if(stristr($type,"double")) $metaType = 'double';
-            if(stristr($type,"blob")) $metaType = 'blob';
-            
-            
-            $column["type"] = $metaType;
-            
-        $columns[] = $column;
-        }
-            return $columns;
-        } else {
-            return false;
-        }
-        
-        
-        //$this->createTable('tester',$columns);
-        
-        /*
-        $result = mysql_list_fields($go_info["server"]["db_name"],$table_name);
-        $fields = mysql_num_fields ($result);
-        $i = 0;
-        $table = mysql_field_table ($result, $i);
-        while ($i < $fields) {
-            $name  = mysql_field_name  ($result, $i);
-            $type  = mysql_field_type  ($result, $i);
-            $len   = mysql_field_len   ($result, $i);
-            $flags = mysql_field_flags ($result, $i);
-            print_r($flags);
-            
-            $columns = array(name => $name,
-                        type =>     "",
-                        defaultValue =>  "",
-                        isnull =>   1,
-                        option =>   "");
-            $returnvar[] = $columns;
-            
-            $i++;
-        }
-        */
-        
-        
-       
-       }
-       
-       function mapType($metaType,$typeValue) {
-       global $go_api;
-       $metaType = strtolower($metaType);
-       switch ($metaType) {
-       case 'int16':
-            return 'smallint';
-       break;
-       case 'int32':
-            return 'int';
-       break;
-       case 'int64':
-            return 'bigint';
-       break;
-       case 'double':
-            return 'double';
-       break;
-       case 'char':
-            return 'char';
-       break;
-       case 'varchar':
-            if($typeValue < 1) die("Datenbank Fehler: F�r diesen Datentyp ist eine L�ngenangabe notwendig.");
-            return 'varchar('.$typeValue.')';
-       break;
-       case 'text':
-            return 'text';
-       break;
-       case 'blob':
-            return 'blob';
-       break;
-       }
-       }
-		
+  // returns all records in an array
+  public function queryAllRecords($queryString) {
+    if(!$this->query($queryString))
+    {
+      return false;
+    }
+    $ret = array();
+    while($line = $this->nextRecord())
+    {
+      $ret[] = $line;
+    }
+    return $ret;
+  }
+
+  // returns one record in an array
+  public function queryOneRecord($queryString) {
+    if(!$this->query($queryString) || $this->numRows() == 0)
+    {
+      return false;
+    }
+    return $this->nextRecord();
+  }
+
+  // returns the next record in an array
+  public function nextRecord() {
+    $this->record = $this->queryId->fetch_assoc();
+    $this->updateError('DB::nextRecord()-> mysql_fetch_array');
+    if(!$this->record || !is_array($this->record))
+    {
+      return false;
+    }
+    $this->currentRow++;
+    return $this->record;
+  }
+
+  // returns number of rows returned by the last select query
+  public function numRows() {
+    return $this->queryId->num_rows;
+  }
+  
+  public function affectedRows() {
+	return $this->queryId->affected_rows;
+  }
+
+  // returns mySQL insert id
+  public function insertID() {
+    return $this->insert_id;
+  }
+
+
+  //* Function to quote strings
+  public function quote($formfield) {
+    return $this->escape_string($formfield);
+  }
+
+  //* Function to unquotae strings
+  public function unquote($formfield) {
+    return stripslashes($formfield);
+  }
+
+public function toLower($record) {
+    if(is_array($record)) {
+      foreach($record as $key => $val) {
+	$key = strtolower($key);
+	$out[$key] = $val;
+      }
+    }
+    return $out;
+  }
+
+  public function diffrec($record_old, $record_new) {
+    $diffrec_full = array();
+    $diff_num = 0;
+
+    if(is_array($record_old) && count($record_old) > 0) {
+      foreach($record_old as $key => $val) {
+	// if(!isset($record_new[$key]) || $record_new[$key] != $val) {
+	if($record_new[$key] != $val) {
+	  // Record has changed
+	  $diffrec_full['old'][$key] = $val;
+	  $diffrec_full['new'][$key] = $record_new[$key];
+	  $diff_num++;
+	} else {
+	  $diffrec_full['old'][$key] = $val;
+	  $diffrec_full['new'][$key] = $val;
 	}
+      }
+      } elseif(is_array($record_new)) {
+	foreach($record_new as $key => $val) {
+	  if(isset($record_new[$key]) && @$record_old[$key] != $val) {
+	    // Record has changed
+	    $diffrec_full['new'][$key] = $val;
+	    $diffrec_full['old'][$key] = @$record_old[$key];
+	    $diff_num++;
+	  } else {
+	    $diffrec_full['new'][$key] = $val;
+	    $diffrec_full['old'][$key] = $val;
+	  }
+	}
+      }
 
-?>
\ No newline at end of file
+      return array('diff_num' => $diff_num, 'diff_rec' => $diffrec_full);
+
+    }
+
+    //** Function to fill the datalog with a full differential record.
+    public function datalogSave($db_table, $action, $primary_field, $primary_id, $record_old, $record_new, $force_update = false) {
+      global $app,$conf;
+
+      // Insert backticks only for incomplete table names.
+      if(stristr($db_table,'.')) {
+	$escape = '';
+      } else {
+	$escape = '`';
+      }
+
+		if($force_update == true) {
+			//* We force a update even if no record has changed
+			$diffrec_full = array('new' => $record_new,'old' => $record_old);
+			$diff_num = count($record_new);
+		} else {
+			//* get the difference record between old and new record
+			$tmp = $this->diffrec($record_old, $record_new);
+			$diffrec_full = $tmp['diff_rec'];
+			$diff_num = $tmp['diff_num'];
+			unset($tmp);
+		}
+
+      // Insert the server_id, if the record has a server_id
+      $server_id = (isset($record_old['server_id']) && $record_old['server_id'] > 0)?$record_old['server_id']:0;
+      if(isset($record_new['server_id'])) $server_id = $record_new['server_id'];
+
+
+      if($diff_num > 0) {
+	//print_r($diff_num);
+	//print_r($diffrec_full);
+	$diffstr = $app->db->quote(serialize($diffrec_full));
+	$username = $app->db->quote($_SESSION['s']['user']['username']);
+	$dbidx = $primary_field.':'.$primary_id;
+
+	if($action == 'INSERT') $action = 'i';
+	if($action == 'UPDATE') $action = 'u';
+	if($action == 'DELETE') $action = 'd';
+	$sql = "INSERT INTO sys_datalog (dbtable,dbidx,server_id,action,tstamp,user,data) VALUES ('".$db_table."','$dbidx','$server_id','$action','".time()."','$username','$diffstr')";
+	$app->db->query($sql);
+      }
+
+      return true;
+    }
+
+    //** Inserts a record and saves the changes into the datalog
+    public function datalogInsert($tablename, $insert_data, $index_field) {
+      global $app;
+	  
+	  if(is_array($insert_data)) {
+			$key_str = '';
+			$val_str = '';
+			foreach($insert_data as $key => $val) {
+				$key_str .= "`".$key ."`,";
+				$val_str .= "'".$this->quote($val)."',";
+			}
+			$key_str = substr($key_str,0,-1);
+			$val_str = substr($val_str,0,-1);
+			$insert_data_str = '('.$key_str.') VALUES ('.$val_str.')';
+		} else {
+			$insert_data_str = $insert_data;
+		}
+
+      $old_rec = array();
+      $this->query("INSERT INTO $tablename $insert_data_str");
+      $index_value = $this->insertID();
+      $new_rec = $this->queryOneRecord("SELECT * FROM $tablename WHERE $index_field = '$index_value'");
+      $this->datalogSave($tablename, 'INSERT', $index_field, $index_value, $old_rec, $new_rec);
+
+      return $index_value;
+    }
+
+    //** Updates a record and saves the changes into the datalog
+    public function datalogUpdate($tablename, $update_data, $index_field, $index_value, $force_update = false) {
+		global $app;
+      
+	  $old_rec = $this->queryOneRecord("SELECT * FROM $tablename WHERE $index_field = '$index_value'");
+	  
+	  if(is_array($update_data)) {
+			$update_data_str = '';
+			foreach($update_data as $key => $val) {
+				$update_data_str .= "`".$key ."` = '".$this->quote($val)."',";
+			}
+			$update_data_str = substr($update_data_str,0,-1);
+		} else {
+			$update_data_str = $update_data;
+		}
+		
+      $this->query("UPDATE $tablename SET $update_data WHERE $index_field = '$index_value'");
+      $new_rec = $this->queryOneRecord("SELECT * FROM $tablename WHERE $index_field = '$index_value'");
+      $this->datalogSave($tablename, 'UPDATE', $index_field, $index_value, $old_rec, $new_rec, $force_update);
+
+      return true;
+    }
+
+    //** Deletes a record and saves the changes into the datalog
+    public function datalogDelete($tablename, $index_field, $index_value) {
+      global $app;
+
+      $old_rec = $this->queryOneRecord("SELECT * FROM $tablename WHERE $index_field = '$index_value'");
+      $this->query("DELETE FROM $tablename WHERE $index_field = '$index_value'");
+      $new_rec = array();
+      $this->datalogSave($tablename, 'DELETE', $index_field, $index_value, $old_rec, $new_rec);
+
+      return true;
+    }
+
+
+    public function freeResult($query) 
+    {
+      if(is_object($query) && (get_class($query) == "mysqli_result")) {
+	$query->free();
+	return true;
+      } else {
+	return false;
+      }
+    }
+
+    /* TODO: Does anything use this? */
+    public function delete() {
+
+    }
+
+    /* TODO: Does anything use this? */
+    public function Transaction($action) {
+      //action = begin, commit oder rollback
+
+    }
+
+    /*
+       $columns = array(action =>   add | alter | drop
+       name =>     Spaltenname
+       name_new => neuer Spaltenname, nur bei 'alter' belegt
+       type =>     42go-Meta-Type: int16, int32, int64, double, char, varchar, text, blob
+       typeValue => Wert z.B. bei Varchar
+       defaultValue =>  Default Wert
+       notNull =>   true | false
+       autoInc =>   true | false
+       option =>   unique | primary | index)
+
+
+     */
+
+    public function createTable($table_name,$columns) {
+      $index = '';
+      $sql = "CREATE TABLE $table_name (";
+      foreach($columns as $col){
+	$sql .= $col['name'].' '.$this->mapType($col['type'],$col['typeValue']).' ';
+
+	if($col['defaultValue'] != '') $sql .= "DEFAULT '".$col['defaultValue']."' ";
+	if($col['notNull'] == true) {
+	  $sql .= 'NOT NULL ';
+	} else {
+	  $sql .= 'NULL ';
+	}
+	if($col['autoInc'] == true) $sql .= 'auto_increment ';
+	$sql.= ',';
+	// key Definitionen
+	if($col['option'] == 'primary') $index .= 'PRIMARY KEY ('.$col['name'].'),';
+	if($col['option'] == 'index') $index .= 'INDEX ('.$col['name'].'),';
+	if($col['option'] == 'unique') $index .= 'UNIQUE ('.$col['name'].'),';
+      }
+      $sql .= $index;
+      $sql = substr($sql,0,-1);
+      $sql .= ')';
+      $this->query($sql);
+      return true;
+    }
+
+    /*
+       $columns = array(action =>   add | alter | drop
+       name =>     Spaltenname
+       name_new => neuer Spaltenname, nur bei 'alter' belegt
+       type =>     42go-Meta-Type: int16, int32, int64, double, char, varchar, text, blob
+       typeValue => Wert z.B. bei Varchar
+       defaultValue =>  Default Wert
+       notNull =>   true | false
+       autoInc =>   true | false
+       option =>   unique | primary | index)
+
+
+     */
+    public function alterTable($table_name,$columns) {
+      $index = '';
+      $sql = "ALTER TABLE $table_name ";
+      foreach($columns as $col){
+	if($col['action'] == 'add') {
+	  $sql .= 'ADD '.$col['name'].' '.$this->mapType($col['type'],$col['typeValue']).' ';
+	} elseif ($col['action'] == 'alter') {
+	  $sql .= 'CHANGE '.$col['name'].' '.$col['name_new'].' '.$this->mapType($col['type'],$col['typeValue']).' ';
+	} elseif ($col['action'] == 'drop') {
+	  $sql .= 'DROP '.$col['name'].' ';
+	}
+	if($col['action'] != 'drop') {  
+	  if($col['defaultValue'] != '') $sql .= "DEFAULT '".$col['defaultValue']."' ";
+	  if($col['notNull'] == true) {
+	    $sql .= 'NOT NULL ';
+	  } else {
+	    $sql .= 'NULL ';
+	  }
+	  if($col['autoInc'] == true) $sql .= 'auto_increment ';
+	  $sql.= ',';
+	  // Index definitions
+	  if($col['option'] == 'primary') $index .= 'PRIMARY KEY ('.$col['name'].'),';
+	  if($col['option'] == 'index') $index .= 'INDEX ('.$col['name'].'),';
+	  if($col['option'] == 'unique') $index .= 'UNIQUE ('.$col['name'].'),';
+	}
+      }
+      $sql .= $index;
+      $sql = substr($sql,0,-1);
+
+      //die($sql);
+      $this->query($sql);
+      return true;
+    }
+
+    public function dropTable($table_name) {
+      $this->check($table_name);
+      $sql = "DROP TABLE '". $table_name."'";
+      return $this->query($sql);
+    }
+
+    // gibt Array mit Tabellennamen zur�ck
+    public function getTables($database_name = '') {
+
+      if($database_name == '') $database_name = $this->dbName;
+      $result = parent::query("SHOW TABLES FROM $database_name");
+      for ($i = 0; $i < $result->num_rows; $i++) {
+	$tb_names[$i] = (($result->data_seek( $i) && (($___mysqli_tmp = $result->fetch_row()) !== NULL)) ? array_shift($___mysqli_tmp) : false);
+      }
+      return $tb_names;       
+    }
+
+    // gibt Feldinformationen zur Tabelle zur�ck
+    /*
+       $columns = array(action =>   add | alter | drop
+       name =>     Spaltenname
+       name_new => neuer Spaltenname, nur bei 'alter' belegt
+       type =>     42go-Meta-Type: int16, int32, int64, double, char, varchar, text, blob
+       typeValue => Wert z.B. bei Varchar
+       defaultValue =>  Default Wert
+       notNull =>   true | false
+       autoInc =>   true | false
+       option =>   unique | primary | index)
+
+
+     */
+
+    function tableInfo($table_name) {
+
+      global $go_api,$go_info;
+      // Tabellenfelder einlesen
+
+      if($rows = $go_api->db->queryAllRecords('SHOW FIELDS FROM '.$table_name)){
+	foreach($rows as $row) {
+	  $name = $row[0];
+	  $default = $row[4];
+	  $key = $row[3];
+	  $extra = $row[5];
+	  $isnull = $row[2];
+	  $type = $row[1];
+
+
+	  $column = array();
+
+	  $column['name'] = $name;
+	  //$column['type'] = $type;
+	  $column['defaultValue'] = $default;
+	  if(stristr($key,'PRI')) $column['option'] = 'primary';
+	  if(stristr($isnull,'YES')) {
+	    $column['notNull'] = false;
+	  } else {
+	    $column['notNull'] = true; 
+	  }
+	  if($extra == 'auto_increment') $column['autoInc'] = true;
+
+
+	  // Type in Metatype umsetzen
+
+	  if(stristr($type,'int(')) $metaType = 'int32';
+	      if(stristr($type,'bigint')) $metaType = 'int64';
+	      if(stristr($type,'char')) {
+	      $metaType = 'char';
+	      $tmp_typeValue = explode('(',$type);
+	      $column['typeValue'] = substr($tmp_typeValue[1],0,-1);  
+	      }
+	      if(stristr($type,'varchar')) {
+	      $metaType = 'varchar';
+	      $tmp_typeValue = explode('(',$type);
+	      $column['typeValue'] = substr($tmp_typeValue[1],0,-1);  
+	      }
+	      if(stristr($type,'text')) $metaType = 'text';
+	      if(stristr($type,'double')) $metaType = 'double';
+	      if(stristr($type,'blob')) $metaType = 'blob';
+
+
+	      $column['type'] = $metaType;
+
+	      $columns[] = $column;
+	      }
+	return $columns;
+      } else {
+	return false;
+      }
+
+
+      //$this->createTable('tester',$columns);
+
+      /*
+	 $result = mysql_list_fields($go_info["server"]["db_name"],$table_name);
+	 $fields = mysql_num_fields ($result);
+	 $i = 0;
+	 $table = mysql_field_table ($result, $i);
+	 while ($i < $fields) {
+	 $name  = mysql_field_name  ($result, $i);
+	 $type  = mysql_field_type  ($result, $i);
+	 $len   = mysql_field_len   ($result, $i);
+	 $flags = mysql_field_flags ($result, $i);
+	 print_r($flags);
+
+	 $columns = array(name => $name,
+	 type =>     "",
+	 defaultValue =>  "",
+	 isnull =>   1,
+	 option =>   "");
+	 $returnvar[] = $columns;
+
+	 $i++;
+	 }
+       */
+
+
+
+    }
+
+    public function mapType($metaType,$typeValue) {
+      global $go_api;
+      $metaType = strtolower($metaType);
+      switch ($metaType) {
+	case 'int16':
+	  return 'smallint';
+	  break;
+	case 'int32':
+	  return 'int';
+	  break;
+	case 'int64':
+	  return 'bigint';
+	  break;
+	case 'double':
+	  return 'double';
+	  break;
+	case 'char':
+	  return 'char';
+	  break;
+	case 'varchar':
+	  if($typeValue < 1) die('Database failure: Lenght required for these data types.');
+	  return 'varchar('.$typeValue.')';
+	      break;
+	      case 'text':
+	      return 'text';
+	      break;
+	      case 'blob':
+	      return 'blob';
+	      break;
+	      }
+	      }
+
+	      }
+
+	      ?>
\ No newline at end of file

--
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