<?php
/***
* This class is designed to create somewhat random passwords
* to set up initial user accounts where
* you email out the initial login information.
*
* Created By: Kevin Gilbertson (kevin@gilbertsonconsulting.com)
* Last Updated: 4/22/02
* Modified By: Flinn Mueller (flinn AT activeintra DOT net)
* Last Updated: 5/01/02
* Modified By: Kevin Gilbertson (kevin@gilbertsonconsulting.com)
* Last Updated: 5/15/02
* Modified By: Kevin Gilbertson (kevin@gilbertsonconsulting.com)
* Last Updated: 11/14/02
***/
class PasswordGenerator
{
var $passwdchars;
var $passwd;
var $length;
var $minlength;
var $maxlength;
function PasswordGenerator($min=6, $max=8, $special=NULL, $chararray=NULL)
{
if($chararray == NULL) {
$passwdstr = "abcdefghijklmnopqrstuvwxyz";
$passwdstr .= strtoupper($passwdstr);
$passwdstr .= "12345678901234567890"; // twice to up the likelyhood
// add special chars to start
if ($special) {
$passwdstr .= "!@#$%";
}
} else {
$passwdstr = $chararray;
}
for($i=0; $i<=strlen($passwdstr) - 1; $i++) {
$this->passwdchars[$i]=$passwdstr[$i];
}
// randomize the chars
srand ((float)microtime()*1000000);
shuffle($this->passwdchars);
$this->minlength = $min;
$this->maxlength = $max;
}
function setLength() // private method
{ $this->length = rand($this->minlength, $this->maxlength); }
function setMin($min)
{ $this->minlength = $min; }
function setMax($max)
{ $this->maxlength = $max; }
function getPassword()
{
$this->passwd = NULL;
$this->setLength();
for($i=0; $i<$this->length; $i++)
{
$charnum = rand(0, count($this->passwdchars) - 1);
$this->passwd .= $this->passwdchars[$charnum];
}
return $this->passwd;
}
// to show in browser
function getHTMLPassword()
{
return (htmlentities($this->getPassword()));
}
// Allows password to be shown as an image
// Also semi-tempest resistant, with random text position,
// and nifty gray color which should difuse tempest emissions
// Created By: Flinn Mueller (flinn AT activeintra DOT net)
function getImgPassword()
{
$RandPassword = $this->getPassword();
// create the image
$png = ImageCreate(200,80);
$bg = ImageColorAllocate($png,192,192,192);
$tx = ImageColorAllocate($png,128,128,128);
ImageFilledRectangle($png,0,0,200,80,$bg);
srand ((float)microtime()*1000000);
ImageString($png,5,rand(0,90),rand(0,50),$RandPassword,$tx);
// send the image
header("content-type: image/png");
ImagePng($png);
imagedestroy ($png);
}
}
?>
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