js updates. captcha + change password base

Author: very-twi

web/captcha.php

@@ -0,0 +1,94 @@
+<?php
+
+require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'vesta' . DIRECTORY_SEPARATOR . 'core' . DIRECTORY_SEPARATOR . 'VestaSession.class.php';
+require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'vesta' . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'Config.class.php';
+
+define('V_ROOT_DIR', dirname(__FILE__) . DIRECTORY_SEPARATOR . 'vesta' . DIRECTORY_SEPARATOR);
+
+class Captcha
+{
+    protected $width   = 200;
+    protected $image   = null;
+    protected $color1  = null;
+    protected $color2  = null;    
+    protected $color3  = null; 
+    protected $keyword = '';
+    public    $key_len = 7;
+    protected $chars   = 'qw1e2r3t4y5u67o8p9as9d38f6g4h3j2k1l3z5x7c8v3b5n781234567890';
+    
+    public function __construct()
+    {
+        VestaSession::start();
+        //var_dump(Config::get('session_dirname'));die();
+        $this->image  = imagecreatetruecolor($this->width, 50);
+        $this->color1 = imagecolorallocate($this->image, 57, 58, 52);
+        $this->color2 = imagecolorallocate($this->image, 45, 44, 40);        
+        $this->color3 = imagecolorallocate($this->image, 255, 255, 255);        
+        imagefilledrectangle($this->image, 0, 0, 249, 249, $this->color1);
+    }
+    
+    
+    public function generateImage($offset = 0)
+    {
+        $values = array(
+                $offset,  15,
+                $offset,  40,
+                $offset + 14, 32,
+                $offset + 14, 8,
+                $offset,  15,
+                $offset,  15
+            );
+        
+        imagefilledpolygon($this->image, $values, 6, $this->color2);        
+    }
+    
+    public function draw()
+    {
+        $this->generateKeyword();       
+        for ($i = 0; $i < strlen($this->keyword) -1; $i++) {
+            $this->generateImage($i * 15);
+        }
+        
+        $font_file = dirname(__FILE__).DIRECTORY_SEPARATOR.'css'.DIRECTORY_SEPARATOR.'arialbd.ttf';
+        imagefttext($this->image, 17, 0, 2, 31, $this->color3, $font_file, $this->keyword);        
+        $this->slice();
+    }
+    
+    public function slice()
+    {
+        $width  = 15;
+        $height = 50;        
+        $dest = imagecreatetruecolor(15 * $this->key_len + 2 * $this->key_len + 8, $height);
+        imagefilledrectangle($dest, 0, 0, 249, 249, $this->color1);
+
+        for ($i = 0; $i < $this->key_len; $i++) {
+            $dest_x = $i == 0 ? $i * 15 : $i * 15 + $i * 4;
+            imagecopy($dest, $this->image, $dest_x, 0, $i * 15, 0, $width, $height);
+        }        
+        
+        header('Content-type: image/jpeg');
+        imagepng($dest);        
+    }
+
+    /**
+     * 
+     */
+    protected function generateKeyword()
+    {
+        $this->keyword = '';
+        for ($i = 0; $i < $this->key_len; $i++) {
+            $this->keyword .= $this->chars[rand(0, strlen($this->chars)-1)];
+        }
+        
+        $_SESSION['captcha_key'] = $this->keyword;      
+        return $this->keyword;
+    }
+    
+}
+
+$c = new Captcha();
+$c->draw();
+
+
+
+?>

web/change_password.php

@@ -0,0 +1,58 @@
+<?php
+
+class ChangePassword
+{
+
+    public function dispatch()
+    {
+        //print_r($_SERVER);
+        if (empty($_GET['v'])) {
+            return $this->renderError('General error');
+        }
+        
+        $key = $_GET['v'];
+        $real_key = sha1($_SERVER['HTTP_USER_AGENT'].$_SERVER['REMOTE_ADDR']);                        
+        $key_sha1 = substr($key, 0, 10) . substr($key, 20, strlen($key));
+        $stamp    = substr($key, 10, 10);
+        $allowed  = time() - 60 * 5; // - 5 mins
+                
+        if (strcmp($real_key, $key_sha1) != 0) {
+            return $this->renderError('Invalid keys');      
+        }
+        
+        /*if ($stamp < $allowed) {
+            return $this->renderError('Key is expired');      
+        }*/
+        
+        $this->showResetForm();
+        print $key_sha1 . "<br />" . $real_key;
+    }
+    
+    public function showResetForm()
+    {
+        print <<<HTML
+            <form action="" >
+                <input type="hidden" name="action" value="change" />
+                <label>Enter secret code:</label>
+                <input type="text" name="secret_code" value="" />
+                <label>Enter new password:</label>
+                <input type="text" name="secret_code" value="" />
+            </form>
+HTML;
+
+    }
+    
+    public function renderError($message)
+    {
+        print <<<HTML
+            {$message}
+HTML;
+    
+    }
+
+}
+
+$changePassword = new ChangePassword();
+$changePassword->dispatch();
+
+?>