Initial Commit N° : 001 - V.4.3.3

cores/nasa-captcha.php

@@ -0,0 +1,117 @@
+<?php
+defined('ABSPATH') or die(); // Exit if accessed directly
+/**
+ * Captcha image
+ */
+class Nasa_Captcha {
+    private $img_width = 120;
+    private $img_height = 30;
+    private $font_path = ELESSI_THEME_PATH . '/assets/captcha-fonts'; // Path file text
+    private $fonts = array();
+    private $font_size = 15;
+    private $char_set = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+    private $char_length = 5;
+    private $char_color = "#880000,#008800,#000088,#888800,#880088,#008888,#000000";
+    private $char_colors = array();
+    private $line_count = 10;
+    private $line_color = "#DD6666,#66DD66,#6666DD,#DDDD66,#DD66DD,#66DDDD,#666666";
+    private $line_colors = array();
+    private $bg_color = '#FFFFFF';
+    
+    public function __construct($length = 5, $width = 120, $height = 30) {
+        $this->char_length = $length;
+        $this->img_width = $width;
+        $this->img_height = $height;
+    }
+
+    // Init Setting
+    // return code and Show Img
+    public function get_and_show_image($override = array()) {
+        /**
+         * Check missing Grab function list 
+         * GD Library
+         */
+        if (!function_exists('imagecreatetruecolor')) {
+            return null;
+        }
+
+        // Override default config
+        if (is_array($override)) {
+            foreach ($override as $key => $value) {
+                if (isset($this->$key)) {
+                    $this->$key = $value;
+                }
+            }
+        }
+
+        // Create list colors to Array
+        $this->line_colors = preg_split("/,\s*?/", $this->line_color);
+        $this->char_colors = preg_split("/,\s*?/", $this->char_color);
+
+        // Get fonts font_path
+        $this->fonts = $this->collect_files($this->font_path, "ttf");
+
+        // Init IMG
+        $img = imagecreatetruecolor($this->img_width, $this->img_height);
+        imagefilledrectangle($img, 0, 0, $this->img_width - 1, $this->img_height - 1, $this->gd_color($this->bg_color));
+
+        // Draw random
+        for ($i = 0; $i < $this->line_count; $i++) {
+            imageline($img, rand(0, $this->img_width - 1), rand(0, $this->img_height - 1), rand(0, $this->img_width - 1), rand(0, $this->img_height - 1), $this->gd_color($this->line_colors[rand(0, count($this->line_colors) - 1)])
+            );
+        }
+
+        // Draw code
+        $code = "";
+        
+        $y = intval(($this->img_height / 2) + ($this->font_size / 2));
+
+        for ($i = 0; $i < $this->char_length; $i++) {
+            $color = $this->gd_color($this->char_colors[rand(0, count($this->char_colors) - 1)]);
+            $angle = rand(-30, 30);
+            $char = substr($this->char_set, rand(0, strlen($this->char_set) - 1), 1);
+
+            $sel_font = $this->fonts[rand(0, count($this->fonts) - 1)];
+
+            $font = $this->font_path . "/" . $sel_font;
+
+            $x = intval(($this->img_width / $this->char_length) * $i + ($this->font_size / 2));
+            $code .= $char;
+
+            imagettftext($img, $this->font_size, $angle, $x, $y, $color, $font, $char);
+        }
+
+        // Show image
+        header('content-type: image/jpg');
+
+        imagejpeg($img);
+        imagedestroy($img);
+        
+        return strtolower($code);
+    }
+
+    // Change color
+    protected function gd_color($html_color) {
+        $rgb = array();
+        
+        return preg_match('/^#?([\dA-F]{6})$/i', $html_color, $rgb) ? hexdec($rgb[1]) : false;
+    }
+
+    // get list files (ext)
+    protected function collect_files($dir, $ext) {
+        if (false !== ($dir = opendir($dir))) {
+            $files = array();
+
+            while (false !== ($file = readdir($dir))) {
+                if (preg_match("/\\.$ext\$/i", $file)) {
+                    $files[] = $file;
+                }
+            }
+            
+            return $files;
+        }
+        
+        return false;
+    }
+
+}