booking / includes / _capacity / captcha_simple_text.php

captcha_simple_text.php in Booking Calendar 10.1.3, at includes/_capacity/captcha_simple_text.php

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1	<?php
2
3	if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly //FixIn: 9.8.0.4
4
5	// ---------------------------------------------------------------------------------------------------------------------
6	// Main function for ajax_ WPBC_AJX_BOOKING__CREATE
7	// ---------------------------------------------------------------------------------------------------------------------
8
9	/**
10	* Check CAPTCHA during Ajax request from booking form and if it's incorrect, then STOP execution and send request to show warning
11	*
12	* @param $request_params [ 'captcha_user_input'=> '...', 'captcha_chalange'=> '...']
13	* @param $is_from_admin_panel true \| false
14	* @param $original_ajx_search_params usually $_REQUEST[ $request_prefix ]
15	*
16	* @return void wp_send_json() TO front-end or skip and continue
17	*/
18	function wpbc_captcha__in_ajx__check( $request_params, $is_from_admin_panel , $original_ajx_search_params ) {
19
20	if (
21	( 'On' === get_bk_option( 'booking_is_use_captcha' ) )
22	&& ( ! $is_from_admin_panel )
23	&& ( ( isset( $original_ajx_search_params['captcha_user_input'] ) ) && ( isset( $original_ajx_search_params['captcha_chalange'] ) ) )
24	) {
25
26	if ( ! wpbc_captcha__simple__is_ansfer_correct( $request_params['captcha_user_input'], $request_params['captcha_chalange'] ) ) {
27
28	$captcha_arr = wpbc_captcha__simple__generate_new();
29
30	$ajx_data_arr = array();
31	$ajx_data_arr['status'] = 'error';
32	$ajx_data_arr['status_error'] = 'captcha_simple_wrong';
33	$ajx_data_arr['captcha__simple'] = $captcha_arr;
34	$ajx_data_arr['ajx_after_action_message'] = __( 'The code you entered is incorrect', 'booking' );
35	$ajx_data_arr['ajx_after_action_message_status'] = 'warning';
36
37	wp_send_json( array(
38	'ajx_data' => $ajx_data_arr,
39	'ajx_search_params' => $original_ajx_search_params,
40	'ajx_cleaned_params' => $request_params,
41	'resource_id' => $request_params['resource_id']
42	) );
43	// After this page will die;
44	}
45	}
46	}
47
48
49
50	// ---------------------------------------------------------------------------------------------------------------------
51	// CAPTCHA Support
52	// ---------------------------------------------------------------------------------------------------------------------
53
54	/**
55	* Is entered CAPTCHA correct ?
56	*
57	* @param string $captcha_user_input user entrance
58	* @param string $captcha_chalange chalange
59	*
60	* @return bool
61	*/
62	function wpbc_captcha__simple__is_ansfer_correct( $captcha_user_input, $captcha_chalange ) {
63
64	if ( ( empty( $captcha_user_input ) ) \|\| ( empty( $captcha_chalange ) ) ) {
65	return false;
66	}
67
68	$captcha_instance = new wpdevReallySimpleCaptcha();
69	$correct = $captcha_instance->check( $captcha_chalange, $captcha_user_input );
70
71	return $correct;
72	}
73
74
75	/**
76	* Generate new CAPTCHA image and return URL to this image and challenge code
77	*
78	* @return array [
79	'url' => $captcha_url,
80	'challenge' => $captcha_challenge
81	]
82	*/
83	function wpbc_captcha__simple__generate_new() {
84
85	$captcha_instance = new wpdevReallySimpleCaptcha();
86
87	// Clean up dead files older than 2 minutes
88	$captcha_instance->cleanup( 2 ); //FixIn: 7.0.1.67
89
90	//$captcha_instance->img_size = array( 72, 24 );
91	/* Background color of CAPTCHA image. RGB color 0-255 */
92	//$captcha_instance->bg = array( 0, 0, 0 );//array( 255, 255, 255 );
93	/* Foreground (character) color of CAPTCHA image. RGB color 0-255 */
94	//$captcha_instance->fg = array( 255, 255, 255 );//array( 0, 0, 0 );
95	/* Coordinates for a text in an image. I don't know the meaning. Just adjust. */
96	//$captcha_instance->base = array( 6, 18 );
97	/* Font size */
98	//$captcha_instance->font_size = 14;
99	/* Width of a character */
100	//$captcha_instance->font_char_width = 15;
101	/* Image type. 'png', 'gif' or 'jpeg' */
102	//$captcha_instance->img_type = 'png';
103
104
105	$word = $captcha_instance->generate_random_word();
106	$prefix = mt_rand();
107
108	$captcha_instance->generate_image( $prefix, $word );
109
110	$filename = $prefix . '.png';
111
112	$captcha_url = WPBC_PLUGIN_URL . '/js/captcha/tmp/' . $filename;
113	$captcha_challenge = substr( $filename, 0, strrpos( $filename, '.' ) );
114
115	return array(
116	'url' => $captcha_url,
117	'challenge' => $captcha_challenge
118	);
119	}
120
121
122	/**
123	* Generate initial HTML content for CAPTCHA in booking form
124	*
125	* @param $resource_id
126	*
127	* @return string\|true
128	*/
129	function wpbc_captcha__simple__generate_html_content( $resource_id ) {
130
131	if ( true !== wpbc_captcha__simple__is_installed() ) {
132	return wpbc_captcha__simple__is_installed();
133	}
134
135	$captcha_arr = wpbc_captcha__simple__generate_new();
136
137	$captcha_url = $captcha_arr['url'];
138	$captcha_challenge = $captcha_arr['challenge'];
139	$html = '<span class="wpbc_text_captcha_container">';
140	$html .= '<input autocomplete="off" type="hidden" name="wpdev_captcha_challenge_' . $resource_id . '" id="wpdev_captcha_challenge_' . $resource_id . '" value="' . $captcha_challenge . '" />';
141	$html .= '<input autocomplete="off" type="text" class="captachinput" value="" name="captcha_input' . $resource_id . '" id="captcha_input' . $resource_id . '" />';
142	$html .= '<img class="captcha_img" id="captcha_img' . $resource_id . '" alt="To show CAPTCHA, please deactivate cache plugin or exclude this page from caching or disable CAPTCHA at WP Booking Calendar > Settings General page in Form Options section." src="' . $captcha_url . '" />';
143	$html .= '</span>';
144
145	return $html;
146	}
147
148
149	/**
150	* Check if captcha can work here
151	*
152	* @return string\|true if true then can work, Otherwise return error message
153	*/
154	function wpbc_captcha__simple__is_installed() {
155
156	//FixIn: 8.8.3.5
157	if ( function_exists( 'gd_info' ) ) {
158
159	return true;
160	/*
161	$gd_info = gd_info();
162	if ( isset( $gd_info['GD Version'] ) ) {
163	$gd_info = $gd_info['GD Version'];
164	} else {
165	$gd_info = json_encode( $gd_info );
166	}
167	*/
168	} else {
169	return '<strong>Error!</strong> CAPTCHA requires the GD library activated in your PHP configuration.'
170	.'Please check more <a href="https://wpbookingcalendar.com/faq/captcha-showing-problems/">here</a>.';
171	}
172
173
174	}