X-Git-Url: http://git.pjr.cc/?p=PHPIPManager.git;a=blobdiff_plain;f=lib%2Fip.php;h=95d71b0fd0a5f340e45cacce03341d416010181d;hp=e07eb30f99e727f7882d13fa77996e4b29139739;hb=2569c990f8e6d6cd66bf85e0db5da9dcd671825a;hpb=bb7eb6654bf2983a7c9d45ad22b0ddbc5608dbe5

diff --git a/lib/ip.php b/lib/ip.php
index e07eb30..95d71b0 100644
--- a/lib/ip.php
+++ b/lib/ip.php
@@ -1,6 +1,103 @@
 <?php
 
 class ip {
+	
+	static function isValid($ip, $mask = 0)
+	{
+		$ipv4 = ereg('^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$', $ip);
+		$ipv6 = ereg("^[0-9a-fA-F:]+$", $ip);
+		
+		if(!$ipv6&&!$ipv4) return false;
+
+		if($ipv6!=false) {
+			if($mask != 0) {
+				if($mask%16 != 0) {
+					error_log("no");
+					return false;
+				} else {
+					$sns = $mask / 16;
+					
+					// now check that we have $sns number of subnets specified
+					$pss = explode(":", $ip);
+					$ns = count($pss);
+					
+					// we need to specify an error we can throw back at the user
+					if($ns < $sns) {
+						error_log("no 2, $ns, $sns, $ip");
+						print_r($pss);
+						return false;
+					}
+					for($i = 0; $i < $sns; $i++) {
+						if(strlen($pss[$i]) < 1) {
+							error_log("no 3");
+							return false;
+						}
+					}
+					
+					// we are still a valid ipv6 ip address/mask
+					error_log("Valid");
+					return true;
+				}
+			}
+		}
+		
+		if($ipv4!=false) {
+			if($mask != 0) {
+				
+			}
+		}
+	}
+	
+	static function truncateNetwork($ip, $mask)
+	{
+		$ipv4 = ereg('^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$', $ip);
+		$ipv6 = ereg("^[0-9a-fA-F:]+$", $ip);
+		
+		if(!$ipv6&&!$ipv4) return false;
+
+		if($ipv6!=false) {
+			if($mask != 0) {
+				if($mask%16 != 0) {
+					error_log("no");
+					return false;
+				} else {
+					$sns = $mask / 16;
+					
+					// now check that we have $sns number of subnets specified
+					$pss = explode(":", $ip);
+					$ns = count($pss);
+					
+					// we need to specify an error we can throw back at the user
+					if($ns < $sns) {
+						error_log("no 2, $ns, $sns, $ip");
+						print_r($pss);
+						return false;
+					}
+					
+					$slt = "";
+					for($i = 0; $i < $sns; $i++) {
+						if(strlen($pss[$i]) < 1) {
+							error_log("no 3");
+							return false;
+						}
+						$slt .= $pss[$i].":";
+					}
+					$slt .= ":0";
+					
+					// we are still a valid ipv6 ip address/mask
+					error_log("Valid");
+					return $slt;
+				}
+			}
+		}
+		
+		if($ipv4!=false) {
+			if($mask != 0) {
+				
+			}
+		}
+	}
+	
 	function addSupernet($supernet)
 	{