Create captcha.php

resources/classes/captcha.php

@@ -0,0 +1,161 @@
+<?php
+/*
+	FusionPBX
+	Version: MPL 1.1
+
+	The contents of this file are subject to the Mozilla Public License Version
+	1.1 (the "License"); you may not use this file except in compliance with
+	the License. You may obtain a copy of the License at
+	http://www.mozilla.org/MPL/
+
+	Software distributed under the License is distributed on an "AS IS" basis,
+	WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+	for the specific language governing rights and limitations under the
+	License.
+
+	The Original Code is FusionPBX
+
+	The Initial Developer of the Original Code is
+	Mark J Crane <[email protected]>
+	Portions created by the Initial Developer are Copyright (C) 2019
+	the Initial Developer. All Rights Reserved.
+
+	Contributor(s):
+	Mark J Crane <[email protected]>
+*/
+
+/**
+ * captcha class
+ *
+ * @method string get
+ */
+class captcha {
+
+	/**
+	* Called when the object is created
+	*/
+	//public $db;
+	//public $domain_uuid;
+	public $code;
+
+	/**
+	* Class constructor
+	*/
+	public function __construct() {
+
+	}
+
+	/**
+	 * Called when there are no references to a particular object
+	 * unset the variables used in the class
+	 */
+	public function __destruct() {
+		foreach ($this as $key => $value) {
+			unset($this->$key);
+		}
+	}
+
+	/**
+	 * Create the captcha image
+	 * @var string $code
+	 */
+	public function image_captcha() {
+
+		//includes
+		include "root.php";
+		require_once "config.php";
+		require_once "resources/functions.php";
+		error_reporting(E_ALL ^ E_NOTICE ^ E_WARNING ); //hide notices and warnings
+
+		//start the session
+		ini_set("session.cookie_httponly", True);
+		if (!isset($_SESSION)) { session_start(); }
+
+		//$_SESSION["captcha"] = substr(md5(uuid()), 0, 6);
+		//$text = $_SESSION["captcha"];
+		$text = $this->code;
+
+		// Set the font path
+		$font_path = $_SERVER["DOCUMENT_ROOT"]."/resources/captcha/fonts";
+
+		// Array of fonts
+		//$fonts[] = 'ROUGD.TTF';
+		//$fonts[] = 'Zebra.ttf';
+		//$fonts[] = 'hanshand.ttf';
+		$fonts = glob($font_path.'/*.[tT][tT][fF]');
+		//print_r($fonts);
+		//exit;
+
+		// Randomize the fonts
+		srand(uuid());
+		$random = (rand()%count($fonts));
+		//$font = $font_path.'/'.$fonts[$random];
+		$font = $fonts[$random];
+
+		// Set the font size
+		$font_size = 16;
+		if(@$_GET['fontsize']) {
+			$font_size = $_GET['fontsize'];
+		}
+
+		// Create the image
+		$size = $this->image_size($font_size, 0, $font, $text);
+		$width = $size[2] + $size[0] + 8;
+		$height = abs($size[1]) + abs($size[7]);
+		//$width = 100;
+		//$height =  40;
+
+		// Set the image size
+		$image = imagecreate($width, $height);
+
+		// Create some colors
+		$white = imagecolorallocate($image, 255, 255, 255);
+		$black = imagecolorallocate($image, 0, 0, 0);
+
+		// Set the transparent color
+		imagecolortransparent($image, $white);
+
+		// Add the text
+		imagefttext($image, $font_size, 0, 0, abs($size[5]), $black, $font, $text);
+
+		// Set the content-type
+		//header("Content-type: image/png");
+		//imagepng($image));
+
+		ob_start();
+		imagepng($image);
+		$image_buffer = ob_get_clean();
+		//echo "<img src=\"data:image/png;base64, ".base64_encode($image_buffer)."\" />\n";
+		imagedestroy($image);
+		return $image_buffer;
+	}
+
+	/**
+	 * return the image in base64
+	 */
+	public function image_base64() {
+		return base64_encode($this->image_captcha());
+	}
+
+	/**
+	 * Get the image size
+	 * @var string $value	string image size
+	 */
+	private function image_size($size, $angle, $font, $text) {
+		$dummy = imagecreate(1, 1);
+		$black = imagecolorallocate($dummy, 0, 0, 0);
+		$bbox = imagettftext($dummy, $size, $angle, 0, 0, $black, $font, $text);
+		imagedestroy($dummy);
+		return $bbox;
+	}
+
+}
+
+/*
+$captcha = new captcha;
+$captcha->code = 'abcdefg';
+$image_base64 = $captcha->base64();
+echo "<img src=\"data:image/png;base64, ".$image_base64."\" />\n";
+*/
+
+?>