<?php
/*
Syntaxcheck 1.2 2006/08/08
A class for checking syntax of forms data
Copyright (c) Tarik Gasmi, All Rights Reserved
*/
class Syntaxcheck
{
var $ERROR = "";
var $CLEAR = false;
function Syntaxcheck ()
{
return;
}
function clear_error ()
{
$this->ERROR = "";
}
# Ist "dotted quad IPAddress" in gueltigem Bereich? true or false
# Ueberprueft Format, fuehrende Nullen, und Werte > 255
#
# Ueberprueft nicht nach reservierten oder nicht-route-baren IPs.
#
function check_ip_syntax($IP)
{
if($this->CLEAR) { $this->clear_error();}
$len = strlen($IP);
if( $len > 15 ){
$this->ERROR = "check_ip_syntax: too long [$IP][$len]";
return false;
}
$badcharacter = eregi_replace("([0-9\.]+)","",$IP);
if(!empty($badcharacter)){
$this->ERROR = "check_ip_syntax: Bad data in IP address [$badcharacter]";
return false;
}
$chunks = explode(".",$IP);
$count = count($chunks);
if ($count != 4){
$this->ERROR = "check_ip_syntax: not a dotted quad [$IP]";
return false;
}
while ( list ($key,$val) = each ($chunks) ){
if(ereg("^0",$val) && strlen($val) != 1){
$this->ERROR = "check_ip_syntax: Invalid IP segment [$val]";
return false;
}
$Num = $val;
settype($Num,"integer");
if($Num > 255){
$this->ERROR = "check_ip_syntax: Segment out of range [$Num]";
return false;
}
}
return true;
}
# Netzwerkaddresse
function check_netip_syntax($IP)
{
if($this->CLEAR) { $this->clear_error();}
if ( !($this->check_ip_syntax($IP)) ){
return false;
}
$chunks = explode(".",$IP);
if ( $chunks[3] != "0" ){
return false;
}
return true;
}
# MAC Adresse
function check_mac_syntax($MAC)
{
if($this->CLEAR) { $this->clear_error();}
$len = strlen($MAC);
if( $len != 17 ){
$this->ERROR = "check_mac_syntax: too long [$MAC][$len]";
return false;
}
$badcharacter = eregi_replace("([0-9a-fA-F\:]+)","",$MAC);
#echo "badcharacter: ".$badcharacter."<br>";
if(!empty($badcharacter)){
$this->ERROR = "check_mac_syntax: Bad data in MAC address [$badcharacter]";
return false;
}
$chunks = explode(":",$MAC);
#print_r($chunks)."<br>";
$count = count($chunks);
if ($count != 6){
$this->ERROR = "check_mac_syntax: not in format hx:hx:hx:hx:hx:hx [$MAC]";
return false;
}
foreach ($chunks as $chunk){
$chunklen = strlen($chunk);
if( $chunklen != 2 ){
$this->ERROR = "check_mac_syntax: too long [$MAC][$len]";
return false;
}
}
return true;
}
# Domainname
# Hostname
function is_hostname ($hostname = ""){
if($this->CLEAR) { $this->clear_error(); }
$web = false;
if(empty($hostname))
{
$this->ERROR = "is_hostname: No hostname submitted";
return false;
}
// Only a-z, 0-9, and "-" or "." are permitted in a hostname
// Patch for POSIX regex lib by Sascha Schumann sas@schell.de
$Bad = eregi_replace("[-A-Z0-9\.]","",$hostname);
if(!empty($Bad))
{
$this->ERROR = "is_hostname: invalid chars [$Bad]";
return false;
}
// See if we're doing www.hostname.tld or hostname.tld
if(eregi("^www\.",$hostname))
{
$web = true;
}
// double "." is a not permitted
if(ereg("\.\.",$hostname))
{
$this->ERROR = "is_hostname: Double dot in [$hostname]";
return false;
}
if(ereg("^\.",$hostname))
{
$this->ERROR = "is_hostname: leading dot in [$hostname]";
return false;
}
$chunks = explode(".",$hostname);
if( (gettype($chunks)) != "array")
{
$this->ERROR = "is_hostname: Invalid hostname, no dot seperator [$hostname]";
return false;
}
$count = ( (count($chunks)) - 1);
if($count < 1)
{
$this->ERROR = "is_hostname: Invalid hostname [$count] [$hostname]\n";
return false;
}
// Bug that can't be killed without doing an is_host,
// something.something will return TRUE, even if it's something
// stupid like NS.SOMETHING (with no tld), because SOMETHING is
// construed to BE the tld. The is_bigfour and is_country
// checks should help eliminate this inconsistancy. To really
// be sure you've got a valid hostname, do an is_host() on it.
if( ($web) and ($count < 2) )
{
$this->ERROR = "is_hostname: Invalid hostname [$count] [$hostname]\n";
return false;
}
$tld = $chunks[$count];
if(empty($tld))
{
$this->ERROR = "is_hostname: No TLD found in [$hostname]";
return false;
}
if(!$this->is_bigfour($tld))
{
if(!$this->is_country($tld))
{
$this->ERROR = "is_hostname: Unrecognized TLD [$tld]";
return false;
}
}
return true;
}
# Syntax Check für die Eingaben: Uhrzeit, Wochentag, Monatstag, Monatstag.Monat
function check_timerange_syntax($mcday,$mcbeg,$mcend){
if($this->CLEAR) { $this->clear_error();}
$badcharacter = eregi_replace("([a-z0-9\.]+)","",$mcday);
if(!empty($badcharacter)){
$this->ERROR = "check_ip_syntax: Bad data in MC Day [$badcharacter]";
return false;
}
$badcharacter = eregi_replace("([x0-9]+)","",$mcbeg);
if(!empty($badcharacter)){
$this->ERROR = "check_ip_syntax: Bad data in MC Begin [$badcharacter]";
return false;
}
$badcharacter = eregi_replace("([x0-9]+)","",$mcend);
if(!empty($badcharacter)){
$this->ERROR = "check_ip_syntax: Bad data in MC End [$badcharacter]";
return false;
}
$lenmcday = strlen($mcday);
if (eregi("([a-z]+)",$mcday)){
if ($lenmcday > 2){$this->ERROR = "WOTAG > 2"; return false;}
if (eregi("([0-9\.]+)",$mcday)){$this->ERROR = "WOTAG enthaelt (0-9.)"; return false;}
#if (!(eregi("[mdsfx][aiorx]",$mcday))){return false;}
if (!(eregi("(m[io]|d[io]|s[ao]|fr|x)",$mcday))){$this->ERROR = "WOTAG falscher String"; return false;}
}
if (eregi("([0-9]+)",$mcday)){
if (eregi("[\.]",$mcday)){
preg_match("/[\.]/",$mcday,$treffer);
if (count($treffer) > 1){$this->ERROR = "mehr als 2 Punkte"; return false;};
$exp = explode('.',$mcday);
$day = $exp[0];
$lenday = strlen($day);
if ($lenday > 2){$this->ERROR = "TAG > 2"; return false;}
if (!(eregi("(0[1-9]|[0-2][0-9]|3[01])",$day))){$this->ERROR = "TAG nicht korrekt"; return false;}
$month = $exp[1];
$lenmonth = strlen($month);
if ($lenmonth > 2){$this->ERROR = "MONAT > 2"; return false;}
if (!(eregi("(0[0-9]|0[0-9]|1[0-2])",$month))){$this->ERROR = "Monat nicht korrekt"; return false;}
}
else{
if ($lenmcday > 2){$this->ERROR = "TAG > 2"; return false;}
if (!(eregi("(0[0-9]|[0-2][0-9]|3[01])",$mcday))){$this->ERROR = "Tag nicht korrekt"; return false;}
}
}
$lenmcbeg = strlen($mcbeg);
if ($lenmcbeg == 2){
if (!(eregi("(0[0-9]|1[0-9]|2[0-3]|x)",$mcbeg))){$this->ERROR = "Uhrzeit nicht korrekt"; return false;}
}
if ($lenmcbeg == 1){
if (!(eregi("([0-9]|x)",$mcbeg))){$this->ERROR = "Uhrzeit nicht korrekt"; return false;}
}
$lenmcend = strlen($mcend);
if ($lenmcend == 2){
if (!(eregi("(0[0-9]|1[0-9]|2[0-3]|x)",$mcend))){$this->ERROR = "Uhrzeit nicht korrekt"; return false;}
}
if ($lenmcend == 1){
if (!(eregi("([0-9]|x)",$mcend))){$this->ERROR = "Uhrzeit nicht korrekt"; return false;}
}
return true;
}
# Überprüft ob Menuposition ein Zahl ist
function check_menuposition($menpos){
if($this->CLEAR) { $this->clear_error();}
$badcharacter = eregi_replace("([0-9]+)","",$menpos);
if(!empty($badcharacter)){
$this->ERROR = "check_menupostion: Bad data in Menu Position [$badcharacter]";
return false;
}
}
}
?>
