code/functions.php

@@ -0,0 +1,76 @@
+<?php
+    
+    /*
+     *    Utility Functions
+     *    
+     */
+     
+	define("MASK_DOTTED_DECIMAL", 1);
+	define("MASK_CIDR", 2);
+     
+    // Override the default error handler to prevent error messages being shown to the user
+	function null_error_handler( $errno, $errstr, $errfile, $errline, $errcontext ) {
+		switch( $errono ) {
+			case E_ERROR:
+			case E_CORE_ERROR:
+			case E_COMPILE_ERROR:
+			case E_USER_ERROR:
+			case E_RECOVERABLE_ERROR: {
+				// Fatal error, cause the page to fail here
+				header("HTTP/1.1 500 Internal Server Error");
+				exit(0);
+			}
+			
+			default: {
+				// non fatal error, let it pass
+				return true;
+			}
+		}
+	}
+	
+	// Override the default exception handler to prevent error messages being shown to the user
+	function null_exception_handler( $exception ) {
+		return true;
+	}
+     
+	function get_web_base_dir() {
+		static $Dir;
+		if (!isset($Dir))
+			$Dir = dirname($_SERVER['SCRIPT_NAME']);
+		return $Dir;
+	}
+	function get_fs_base_dir() {
+		static $Dir;
+		if (!isset($Dir))
+			$Dir = dirname($_SERVER['SCRIPT_FILENAME']);
+		return $Dir;
+	}
+	
+	function get_network_mask( $ip, $subnet, $mode = MASK_DOTTED_DECIMAL ) {
+		$ip_l		= ip2long( $ip );
+		if( $mode == MASK_DOTTED_DECIMAL ) 
+			// 255.255.255.0 type subnet
+			$subnet_l	= ip2long( $subnet );
+		else
+			// CIDR type subnet
+			$subnet_l = (~0) << (32 - $subnet);
+			
+		// Mask the two together
+		$network_l = $ip_l & $subnet_l;
+		
+		return long2ip($network_l);
+	}
+	
+	 function array_clone( &$source, &$dest ) {
+		foreach( $source as $key => $value ) {
+			$dest[$key] = $value;
+		}	
+	}
+	
+	function print_rating_graph( $star_rating ) {
+		global $_meta;
+?>
+		<img class="foreground" src="<?php echo $_meta['base-dir']; ?>/resources/ratings/<?php echo $star_rating; ?>" alt="Rated: <?php echo $star_rating; ?>" />
+<?php
+	}
+?>