include/heimdal/mkey.php

   1 <?php
   2 /*
   3  * mkey.php,v 1.0 2006/08/25 21:00:00
   4  *
   5  * Copyright 2006 Alejandro Escanero Blanco <aescanero@chaosdimension.org>
   6  *
   7  * See the enclosed file COPYING for license information (GPL).  If you
   8  * did not receive this file, see http://www.fsf.org/copyleft/gpl.html.
   9  */
  10
  11
  12 class entry{
  13         var $timestamp;
  14         var $vno;
  15         var $keytype;
  16         var $data;
  17 };
  18
  19 class principal{
  20         var $len;
  21         var $realm;
  22         var $name_type;
  23         var $entry;
  24         var $vno;
  25 }
  26
  27
  28 class mkey{
  29
  30         var $pvno; //version kerberos
  31         var $tag;       //tag (id->version)
  32
  33         var $buf;
  34         var $mknvo;
  35         var $realm;
  36         var $ix_i;
  37         var $ix;
  38         var $fsz;
  39         var $principals;
  40         var $principals_l;
  41
  42         //function mkey(){};
  43
  44         function mkey($file){
  45                 $this->ix=0;
  46                 $this->ix_i=0;
  47                 $this->buf="";
  48                 $this->principals=array();
  49                 $this->principals_l=0;
  50                 $this->fsz=filesize($file);
  51                 $mk=fopen($file,"r");
  52                 if(!$mk){
  53                         echo "no puedo abrir mkey";
  54                         exit(1);
  55                 }
  56                 while(!feof($mk)){
  57                         $this->buf.=fgets($mk,100);
  58                 }
  59
  60                 /*print "DECODE:: \n";
  61                 for ($i=0;$i<strlen($this->buf);$i++){ printf("%d %02x (%d) ",$i,ord(substr($this->buf,$i,1)),ord(substr($this->buf,$i,1)));echo substr($this->buf,$i,1)."\n";}*/
  62
  63
  64                 //Begin procedure
  65
  66                 $this->pvno=$this->getdec(1);//00 version
  67                 $this->tag=$this->getdec(1);//01 tag
  68                 while($this->ix_i<$this->fsz){
  69                         $this->mkeyPrincipal();
  70                 }
  71         }
  72
  73         function mkeyPrincipal(){
  74                 $this->principals[]=new principal();
  75                 $this->principals[$this->principals_l]->len=$this->getdec(4); // len
  76                 $tmp=$this->getdec(2);// tmp
  77                 $sz=$this->getdec(2);// size
  78                 $this->principals[$this->principals_l]->realm=$this->getstr($sz);//realm
  79                 $sz=$this->getdec(2);//size
  80                 $data=$this->getstr($sz);               //Must be "K"
  81                 $sz=$this->getdec(2);//size
  82                 $data=$this->getstr($sz);               //Must be "M"
  83                 $this->principals[$this->principals_l]->name_type=$this->getdec(4);//name type
  84                 $this->principals[$this->principals_l]->entry=$this->mkeyEntry();//entry
  85                 $this->principals[$this->principals_l]->vno=$this->getdec(4);//vno
  86                 $this->principals_l++;
  87         }
  88
  89         function mkeyEntry(){
  90                 $local_entry=new entry();
  91                 $local_entry->timestamp=$this->getdec(4);
  92                 $local_entry->vno=$this->getdec(1);
  93                 $local_entry->keytype=$this->getdec(2);
  94                 $len=$this->getdec(2);
  95                 $local_entry->data=$this->getstr($len);
  96                 return($local_entry);
  97         }
  98
  99         function getKeyType_Entry($pos=0){
 100                 if($pos>($this->principals_l-1)){ echo "mkey error"; exit(-1); }
 101                 return($this->principals[$pos]->entry->keytype);
 102         }
 103
 104         function getKey_Entry($pos=0){
 105                 if($pos>($this->principals_l-1)){ echo "mkey error"; exit(-1); }
 106                 return($this->principals[$pos]->entry->data);
 107         }
 108
 109         function getKey_Entry_A($pos=0){
 110                 if($pos>($this->principals_l-1)){ echo "mkey error"; exit(-1); }
 111                 $masterkey=array(strlen($mkey1));
 112                 for ($i=0;$i<(strlen($mkey1));$i++){
 113                         $masterkey[$i]=ord(substr($this->principals[$pos]->entry->data,$i,1));
 114                 }
 115                 return($masterkey);
 116         }
 117
 118         function getNumber_Entry(){
 119                 return($this->principals_l);
 120         }
 121
 122         function getdec($len){
 123                 $res=0;
 124                 while ($len>0){
 125                         $res*=0xff;
 126                         $res+=ord(substr($this->buf,$this->ix_i,1));
 127                         $this->ix_i++;
 128                         $len--;
 129                 }
 130                 return($res);
 131         }
 132
 133         function getstr($len){
 134                 $res="";
 135                 while ($len>0){
 136                         $res.=substr($this->buf,$this->ix_i,1);
 137                         $this->ix_i++;
 138                         $len--;
 139                 }
 140                 return($res);
 141         }
 142
 143
 144 };
 145
 146 ?>