[Phphtmllib-devel] SF.net SVN: phphtmllib:[3163] trunk/phphtmllib/src/validation/ NetworkValidator.inc

[<he...@us...>]

Revision: 3163
          http://phphtmllib.svn.sourceforge.net/phphtmllib/?rev=3163&view=rev
Author:   hemna
Date:     2008-10-06 23:00:19 +0000 (Mon, 06 Oct 2008)

Log Message:
-----------
added is_ip_v6

Modified Paths:
--------------
    trunk/phphtmllib/src/validation/NetworkValidator.inc

Modified: trunk/phphtmllib/src/validation/NetworkValidator.inc
===================================================================
--- trunk/phphtmllib/src/validation/NetworkValidator.inc	2008-10-06 22:14:22 UTC (rev 3162)
+++ trunk/phphtmllib/src/validation/NetworkValidator.inc	2008-10-06 23:00:19 UTC (rev 3163)
@@ -230,9 +230,58 @@
                 self::error(phphtmllibException::STR_INVALID_IP);
             }
         }
-
-
     }
+    
+    /**
+	 * This tries to validate an ip address as an IPv6
+	 * specific ip.
+	 * 
+	 * @param string = the value to validate
+	 * @return void
+	 */
+    public static function is_ip_v6($ip) {
+    	//try and use filter_var if we have it
+    	//requires php 5.2.0 or >
+    	if (function_exixsts("filter_var")) {
+    	   	if(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === FALSE) {
+    			self::error(phphtmllibException::STR_INVALID_IP);    	    
+    		} else {
+    		    return true;
+    		}
+    	} else {    
+    		if (substr_count($value, ":") < 2) {
+    			// has to contain ":" at least twice like in ::1 or 1234::abcd
+    			self::error(phphtmllibException::STR_INVALID_IP);
+    		}
+    		if (substr_count($value, "::") > 1) {
+    			//only 1 double colon allowed.
+    			self::error(phphtmllibException::STR_INVALID_IP);
+    		}
+    	
+    		$groups = explode(':', $value);
+    		$num_groups = count($groups);
+    		if (($num_groups > 8) || ($num_groups < 3)) {
+	    		//3-8 groups of 0-4 digits (1 group has to be at leas 1 digit)
+    			self::error(phphtmllibException::STR_INVALID_IP);
+    		}
+		
+    		$empty_groups = 0;
+			foreach ($groups as $group) {
+				$group = trim($group);
+				if (!empty($group) && !(is_numeric($group) && ($group == 0))) {
+					if (!preg_match('#([a-fA-F0-9]{0,4})#', $group)) {
+						self::error(phphtmllibException::STR_INVALID_IP);
+					}
+				} else {
+					++$empty_groups;
+				}
+			}
+		
+			if ($empty_groups >= $num_groups) {
+				self::error(phphtmllibException::STR_INVALID_IP);		
+			}
+    	}
+	}
 
     /**
      * This validates a string as a portion


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