From d35b34d03ffe0d92cbaeb4410c913550150fab4e Mon Sep 17 00:00:00 2001
From: Marius Cramer <m.cramer@pixcept.de>
Date: Mon, 04 May 2015 13:56:31 -0400
Subject: [PATCH] - prepared layout change for login page

---
 server/lib/classes/db_mysql.inc.php |  119 +++++++++++++++++++++++++++++++++++++++++++++--------------
 1 files changed, 90 insertions(+), 29 deletions(-)

diff --git a/server/lib/classes/db_mysql.inc.php b/server/lib/classes/db_mysql.inc.php
index 488a381..d2592f5 100644
--- a/server/lib/classes/db_mysql.inc.php
+++ b/server/lib/classes/db_mysql.inc.php
@@ -86,7 +86,7 @@
 			$this->_sqlerror('Zugriff auf Datenbankserver fehlgeschlagen! / Database server not accessible!');
 			return false;
 		}
-		if(!((bool)mysqli_query( $this->_iConnId, "USE $this->dbName"))) {
+		if(!((bool)mysqli_query( $this->_iConnId, 'USE `' . $this->dbName . '`'))) {
 			$this->close();
 			$this->_sqlerror('Datenbank nicht gefunden / Database not found');
 			return false;
@@ -132,8 +132,10 @@
 				if($iPos2 !== false && ($iPos === false || $iPos2 <= $iPos)) {
 					$sTxt = $this->escape($sValue);
 
-					if(strpos($sTxt, '.') !== false) $sTxt = preg_replace('/^(.+)\.(.+)$/', '`$1`.`$2`', $sTxt);
-					else $sTxt = '`' . $sTxt . '`';
+					if(strpos($sTxt, '.') !== false) {
+						$sTxt = preg_replace('/^(.+)\.(.+)$/', '`$1`.`$2`', $sTxt);
+						$sTxt = str_replace('.`*`', '.*', $sTxt);
+					} else $sTxt = '`' . $sTxt . '`';
 
 					$sQuery = substr_replace($sQuery, $sTxt, $iPos2, 2);
 					$iPos2 += strlen($sTxt);
@@ -141,13 +143,17 @@
 				} else {
 					if(is_int($sValue) || is_float($sValue)) {
 						$sTxt = $sValue;
-					} elseif(is_string($sValue) && (strcmp($sValue, '#NULL#') == 0)) {
+					} elseif(is_null($sValue) || (is_string($sValue) && (strcmp($sValue, '#NULL#') == 0))) {
 						$sTxt = 'NULL';
 					} elseif(is_array($sValue)) {
-						$sTxt = '';
-						foreach($sValue as $sVal) $sTxt .= ',\'' . $this->escape($sVal) . '\'';
-						$sTxt = '(' . substr($sTxt, 1) . ')';
-						if($sTxt == '()') $sTxt = '(0)';
+						if(isset($sValue['SQL'])) {
+							$sTxt = $sValue['SQL'];
+						} else {
+							$sTxt = '';
+							foreach($sValue as $sVal) $sTxt .= ',\'' . $this->escape($sVal) . '\'';
+							$sTxt = '(' . substr($sTxt, 1) . ')';
+							if($sTxt == '()') $sTxt = '(0)';
+						}
 					} else {
 						$sTxt = '\'' . $this->escape($sValue) . '\'';
 					}
@@ -176,6 +182,7 @@
 	private function _query($sQuery = '') {
 		global $app;
 
+		//if($this->isConnected == false) return false;
 		if ($sQuery == '') {
 			$this->_sqlerror('Keine Anfrage angegeben / No query given');
 			return false;
@@ -187,6 +194,17 @@
 			$ok = mysqli_ping($this->_iConnId);
 			if(!$ok) {
 				if(!mysqli_connect($this->dbHost, $this->dbUser, $this->dbPass, $this->dbName)) {
+					if($this->errorNumber == '111') {
+						// server is not available
+						if($try > 9) {
+							if(isset($app) && isset($app->forceErrorExit)) {
+								$app->forceErrorExit('Database connection failure!');
+							}
+							// if we reach this, the app object is missing or has no exit method, so we continue as normal
+						}
+						sleep(30); // additional seconds, please!
+					}
+
 					if($try > 9) {
 						$this->_sqlerror('DB::query -> reconnect');
 						return false;
@@ -269,11 +287,11 @@
 	}
 
 	public function queryOne($sQuery = '') {
-		return $this->query_one($sQuery);
+		return call_user_func_array(array(&$this, 'queryOneRecord'), func_get_args());
 	}
 
 	public function query_one($sQuery = '') {
-		return $this->queryOneRecord($sQuery);
+		return call_user_func_array(array(&$this, 'queryOneRecord'), func_get_args());
 	}
 
 	/**
@@ -302,11 +320,11 @@
 	}
 
 	public function queryAll($sQuery = '') {
-		return $this->queryAllRecords($sQuery);
+		return call_user_func_array(array(&$this, 'queryAllRecords'), func_get_args());
 	}
 
 	public function query_all($sQuery = '') {
-		return $this->queryAllRecords($sQuery);
+		return call_user_func_array(array(&$this, 'queryAllRecords'), func_get_args());
 	}
 
 	/**
@@ -335,7 +353,7 @@
 	}
 
 	public function query_all_array($sQuery = '') {
-		return $this->queryAllArray($sQuery);
+		return call_user_func_array(array(&$this, 'queryAllArray'), func_get_args());
 	}
 
 
@@ -378,6 +396,35 @@
 
 
 	/**
+	 * check if a utf8 string is valid
+	 *
+	 * @access public
+	 * @param string  $string the string to check
+	 * @return bool true if it is valid utf8, false otherwise
+	 */
+	private function check_utf8($str) {
+		$len = strlen($str);
+		for($i = 0; $i < $len; $i++){
+			$c = ord($str[$i]);
+			if ($c > 128) {
+				if (($c > 247)) return false;
+				elseif ($c > 239) $bytes = 4;
+				elseif ($c > 223) $bytes = 3;
+				elseif ($c > 191) $bytes = 2;
+				else return false;
+				if (($i + $bytes) > $len) return false;
+				while ($bytes > 1) {
+					$i++;
+					$b = ord($str[$i]);
+					if ($b < 128 || $b > 191) return false;
+					$bytes--;
+				}
+			}
+		}
+		return true;
+	} // end of check_utf8
+
+	/**
 	 * Escape a string for usage in a query
 	 *
 	 * @access public
@@ -388,21 +435,21 @@
 		global $app;
 		if(!is_string($sString) && !is_numeric($sString)) {
 			$app->log('NON-String given in escape function! (' . gettype($sString) . ')', LOGLEVEL_INFO);
-			$sAddMsg = getDebugBacktrace();
+			//$sAddMsg = getDebugBacktrace();
 			$app->log($sAddMsg, LOGLEVEL_DEBUG);
 			$sString = '';
 		}
 
-		/*$cur_encoding = mb_detect_encoding($sString);
+		$cur_encoding = mb_detect_encoding($sString);
 		if($cur_encoding != "UTF-8") {
 			if($cur_encoding != 'ASCII') {
-				$app->log('String ' . substr($sString, 0, 25) . '... is ' . $cur_encoding . '.', LOGLEVEL_WARN);
+				$app->log('String ' . substr($sString, 0, 25) . '... is ' . $cur_encoding . '.', LOGLEVEL_INFO);
 				if($cur_encoding) $sString = mb_convert_encoding($sString, 'UTF-8', $cur_encoding);
 				else $sString = mb_convert_encoding($sString, 'UTF-8');
 			}
-		} elseif(!PXBase::check_utf8($sString)) {
+		} elseif(!$this->check_utf8($sString)) {
 			$sString = utf8_encode($sString);
-		}*/
+		}
 
 		if($this->_iConnId) return mysqli_real_escape_string($this->_iConnId, $sString);
 		else return addslashes($sString);
@@ -419,12 +466,12 @@
 		$mysql_error = (is_object($this->_iConnId) ? mysqli_error($this->_iConnId) : mysqli_connect_error());
 		$mysql_errno = (is_object($this->_iConnId) ? mysqli_errno($this->_iConnId) : mysqli_connect_errno());
 
-		$sAddMsg .= getDebugBacktrace();
+		//$sAddMsg .= getDebugBacktrace();
 
 		if($this->show_error_messages && $conf['demo_mode'] === false) {
 			echo $sErrormsg . $sAddMsg;
 		} else if(is_object($app) && method_exists($app, 'log')) {
-				$app->log($sErrormsg . $sAddMsg, LOGLEVEL_WARN);
+				$app->log($sErrormsg . $sAddMsg . ' -> ' . $mysql_errno . ' (' . $mysql_error . ')', LOGLEVEL_WARN);
 			}
 	}
 
@@ -574,20 +621,27 @@
 		if(is_array($insert_data)) {
 			$key_str = '';
 			$val_str = '';
+			$params = array($tablename);
+			$v_params = array();
 			foreach($insert_data as $key => $val) {
-				$key_str .= "`".$key ."`,";
-				$val_str .= "'".$this->escape($val)."',";
+				$key_str .= '??,';
+				$params[] = $key;
+				
+				$val_str .= '?,';
+				$v_params[] = $val;
 			}
 			$key_str = substr($key_str, 0, -1);
 			$val_str = substr($val_str, 0, -1);
 			$insert_data_str = '('.$key_str.') VALUES ('.$val_str.')';
+			$this->query("INSERT INTO ?? $insert_data_str", true, $params + $v_params);
 		} else {
+			/* TODO: deprecate this method! */
 			$insert_data_str = $insert_data;
+			$this->query("INSERT INTO ?? $insert_data_str", $tablename);
+			$app->log("deprecated use of passing values to datalogInsert() - table " . $tablename, 1);
 		}
-		/* TODO: reduce risk of insert_data_str! */
-
+		
 		$old_rec = array();
-		$this->query("INSERT INTO ?? $insert_data_str", $tablename);
 		$index_value = $this->insertID();
 		$new_rec = $this->queryOneRecord("SELECT * FROM ?? WHERE ? = ?", $tablename, $index_field, $index_value);
 		$this->datalogSave($tablename, 'INSERT', $index_field, $index_value, $old_rec, $new_rec);
@@ -602,17 +656,24 @@
 		$old_rec = $this->queryOneRecord("SELECT * FROM ?? WHERE ?? = ?", $tablename, $index_field, $index_value);
 
 		if(is_array($update_data)) {
+			$params = array($tablename);
 			$update_data_str = '';
 			foreach($update_data as $key => $val) {
-				$update_data_str .= "`".$key ."` = '".$this->escape($val)."',";
+				$update_data_str .= '?? = ?,';
+				$params[] = $key;
+				$params[] = $val;
 			}
+			$params[] = $index_field;
+			$params[] = $index_value;
 			$update_data_str = substr($update_data_str, 0, -1);
+			$this->query("UPDATE ?? SET $update_data_str WHERE ?? = ?", true, $params);
 		} else {
+			/* TODO: deprecate this method! */
 			$update_data_str = $update_data;
+			$this->query("UPDATE ?? SET $update_data_str WHERE ?? = ?", $tablename, $index_field, $index_value);
+			$app->log("deprecated use of passing values to datalogUpdate() - table " . $tablename, 1);
 		}
-		/* TODO: reduce risk of update_data_str */
 
-		$this->query("UPDATE ?? SET $update_data_str WHERE ?? = ?", $tablename, $index_field, $index_value);
 		$new_rec = $this->queryOneRecord("SELECT * FROM ?? WHERE ?? = ?", $tablename, $index_field, $index_value);
 		$this->datalogSave($tablename, 'UPDATE', $index_field, $index_value, $old_rec, $new_rec, $force_update);
 
@@ -635,7 +696,7 @@
 	public function datalogError($errormsg) {
 		global $app;
 
-		if(isset($app->modules->current_datalog_id) && $app->modules->current_datalog_id > 0) $this->query("UPDATE sys_datalog set error = '".$this->quote($errormsg)."' WHERE datalog_id = ".$app->modules->current_datalog_id);
+		if(isset($app->modules->current_datalog_id) && $app->modules->current_datalog_id > 0) $this->query("UPDATE sys_datalog set error = ? WHERE datalog_id = ?", $errormsg, $app->modules->current_datalog_id);
 
 		return true;
 	}

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