├── assets
    └── recaptcha.png
├── fields
    └── recaptcha
    │   ├── preview.php
    │   ├── config.php
    │   └── field.php
├── caldera-forms-anti-spam.php
├── readme.txt
└── classes
    └── recapatcha.php


/assets/recaptcha.png:
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https://raw.githubusercontent.com/andrewlimaza/caldera-forms-anti-spam/HEAD/assets/recaptcha.png


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/fields/recaptcha/preview.php:
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 1 | {{#if config/public_key}}
 2 | 	{{#if config/private_key}}
 3 | 		<div id="cap{{id}}" class="g-recaptcha" data-sitekey="{{config/public_key}}" data-theme="{{config/theme}}">
 4 | 			<img src="<?php echo CF_ANTISPAM_URL . 'assets/recaptcha.png'; ?>" width="50px" height="auto" alt="reCaptcha Logo"/>
 5 | 			{{#if config/recapv}}
 6 | 				(<?php _e( 'Using reCaptcha V3 - Invisible by default.', 'cf-anti-spam' ); ?>)
 7 | 			{{else}}
 8 | 				{{#if config/invis}} (<?php _e( 'Invisible Recaptcha enabled.', 'cf-anti-spam' ); ?>){{/if}}
 9 | 			{{/if}}
10 | 			</div>
11 | 		<!-- before the script yo! -->
12 | 		{{#script}}
13 | 
14 | 		jQuery(document).ready( function(){
15 | 			if( typeof grecaptcha === 'object' ){
16 | 
17 | 				var captch = jQuery('#cap{{id}}');
18 | 
19 | 				grecaptcha.render( captch[0], {
20 | 					"sitekey"	:	"{{config/public_key}}",
21 | 					"theme"		:	"{{config/theme}}"
22 | 				});
23 | 			}
24 | 		});
25 | 
26 | 		{{/script}}
27 | 	{{else}}
28 | 		<p><?php esc_html_e( 'No Secret Key Added', 'cf-anti-spam' ); ?></p>
29 | 	{{/if}}
30 | {{else}}
31 | 	<p><?php esc_html_e( 'No Site Key Added', 'aldera-forms-anti-spam'); ?></p>
32 | {{/if}}
33 | 


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/caldera-forms-anti-spam.php:
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 1 | <?php
 2 | /**
 3 | * Plugin Name: Caldera Forms Anti Spam
 4 | * Description: Anti-spam for Caldera Forms. Recaptcha field!
 5 | * Author: Yoohoo Plugins
 6 | * Version: 0.4
 7 | * Author URI: https://yoohooplugins.com
 8 | * Text Domain: cf-anti-spam
 9 |  */
10 | 
11 | define( 'CF_ANTISPAM_PATH',  plugin_dir_path( __FILE__ ) );
12 | define( 'CF_ANTISPAM_URL',  plugin_dir_url( __FILE__ ) );
13 | define( 'CF_ANTISPAM_VER', '0.4' );
14 | 
15 | function cf_antispam_init(){
16 | 	Caldera_Forms_Autoloader::add_root( 'CF_Antispam', __DIR__ . '/classes' );
17 | 	cf_antispam_init_recpatcha();
18 | }
19 | add_action( 'caldera_forms_includes_complete', 'cf_antispam_init' );
20 | 
21 | function cf_antispam_init_recpatcha(){
22 | 	$recaptcha = new CF_Antispam_Recapatcha();
23 | 	//Replace existing recaptcha field
24 | 	add_filter( 'caldera_forms_get_field_types', array( $recaptcha, 'add_field' ), 25 );
25 | 	//Prevent removing recaptcha from DOM from being effective bypass of recpatcha
26 | 	add_filter( 'caldera_forms_validate_field_recaptcha', array( $recaptcha, 'check_for_captcha' ), 10, 3 );
27 | 	add_filter( 'caldera_forms_field_attributes-recaptcha', array( $recaptcha, 'field_attrs' ), 10, 2 );
28 | 	add_filter( 'caldera_forms_summary_magic_fields', array( $recaptcha, 'remove_from_summary' ), 10, 2 );
29 | }
30 | 


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/fields/recaptcha/config.php:
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 1 | <input type="hidden" value="1" name="config[fields][{{_id}}][required]" class="field-config">
 2 | 
 3 | <p class="description" style="text-align:center;">
 4 | 	<?php esc_html_e('reCAPTCHA required keys from Google.', 'cf-anti-spam'); ?><a href="https://www.google.com/recaptcha" target="_blank"> Visit reCAPTCHA</a>
 5 | </p>
 6 | 
 7 | <div class="caldera-config-group">
 8 |     <label for="{{_id}}_recapv">
 9 |         <?php esc_html_e('Use reCAPTCHA V3', 'cf-anti-spam'); ?>
10 |     </label>
11 |     <div class="caldera-config-field">
12 |         <input id="{{_id}}_recapv" type="checkbox" class="field-config" name="{{_name}}[recapv]" value="1" {{#if recapv}}checked="checked"{{/if}} >
13 |     </div>
14 | </div>
15 | 
16 | {{#if recapv}}
17 | <br>
18 | <p class="description" style="text-align:left;">
19 |     <?php esc_html_e('reCAPTCHA V3 returns a score for each request without user friction', 'cf-anti-spam'); ?>
20 | </p>
21 | {{else}}
22 | <div class="caldera-config-group">
23 | 	<label for="{{_id}}_invis">
24 |         <?php esc_html_e('Invisible reCAPTCHA', 'cf-anti-spam'); ?>
25 |     </label>
26 | 	<div class="caldera-config-field">
27 | 		<input id="{{_id}}_invis" type="checkbox" class="field-config" name="{{_name}}[invis]" value="1" {{#if invis}}checked="checked"{{/if}} >
28 |         <small><?php esc_html_e('Automatically enabled with V3 reCAPTCHA', 'cf-anti-spam'); ?></small>
29 | 	</div>
30 | </div>
31 | {{/if}}
32 | 
33 | <div class="caldera-config-group">
34 | 	<label for="{{_id}}_public">
35 |         <?php esc_html_e('Site Key', 'cf-anti-spam'); ?>
36 |     </label>
37 | 	<div class="caldera-config-field">
38 | 		<input type="text" id="{{_id}}_public" class="block-input field-config required" name="{{_name}}[public_key]" value="{{public_key}}">
39 | 	</div>
40 | </div>
41 | 
42 | <div class="caldera-config-group">
43 | 	<label for="{{_id}}_secret">
44 |         <?php esc_html_e('Secret Key', 'cf-anti-spam'); ?>
45 |     </label>
46 | 	<div class="caldera-config-field">
47 | 		<input id="{{_id}}_secret" type="text" class="block-input field-config required" name="{{_name}}[private_key]" value="{{private_key}}">
48 | 	</div>
49 | </div>
50 | 


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/readme.txt:
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 1 | ** THIS IS NO LONGER SUPPORTED AS CALDERA FORMS NO LONGER IS SUPPORTED - I HIGHLY RECOMMEND SWITCHING FORM WORDPRESS PLUGINS IF YOU WANT A RECAPTCHA SOLUTION **
 2 | 
 3 | === Caldera Forms Anti Spam ===
 4 | Contributors: andrewza, yoohooplugins, travislima
 5 | Donate link: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=4GC4JEZH7KSKL
 6 | Tags: caldera forms, anti-spam, recaptcha
 7 | Requires at least: 4.5
 8 | Tested up to: 5.6
 9 | Stable tag: 0.4
10 | License: GPLv2 or later
11 | License URI: http://www.gnu.org/licenses/gpl-2.0.html
12 | 
13 | Anti-spam for Caldera Forms. reCAPTCHA and more.
14 | == Description ==
15 | 
16 | Anti-spam for [Caldera Forms](https://calderaforms.com)
17 | 
18 | = Adds A Google reCaptcha Field To Caldera Forms =
19 | 
20 | * Go to [reCAPTCHA Site](https://www.google.com/recaptcha) and click "Get reCpatcha" button.
21 | * In "Register a new site" choose reCAPTCHA v2,v3 or Invisible reCAPTCHA.
22 | * Add your domains and complete form.
23 | * This will show you your new public and secret key.
24 | * On your WordPress site, go to the Caldera Forms editor for form you wish to add a the captcha to.
25 | * Drag "Add Field" bar into the form layout where you want the captcha to appear.
26 | * In field settings enter public and secret keys.
27 | 
28 | 
29 | == Installation ==
30 | 1. Upload the plugin files to the '/wp-content/plugins' directory, or install the plugin through the WordPress plugins screen directly.
31 | 2. Activate the plugin through the 'Plugins' screen in WordPress.
32 | 3. Go to the Caldera Forms editor for form you wish to add a the captcha to.
33 | 4. Drag "Add Field" bar into the form layout where you want the captcha to appear.
34 | 5. In field settings enter public and secret keys.
35 | 
36 | 
37 | == Frequently Asked Questions ==
38 | = Does This Provide A Google reCAPTCHA v3 Field For Caldera Forms =
39 | Yes, this will add a Google reCAPTCHA-powered captcha to your Caldera Form.
40 | 
41 | = Does This Support V2 and Invisible reCAPTCHA =
42 | Yes, this supports 'legacy' versions of reCaptcha for Caldera Forms.
43 | 
44 | = How Do I Enable V2 reCAPTCHA =
45 | Add the hidden field to your Caldera Form and do not select V3 or Invisible reCAPTCHA checkboxes.
46 | 
47 | = How Do I Enable V3 reCAPTCHA =
48 | Once the hidden field is added to your Caldera Form, select the V3 checkbox. (You do not need to select the Invisible reCaptcha option if you have selected this setting).
49 | 
50 | 
51 | == Screenshots ==
52 | 
53 | 
54 | == Changelog ==
55 | 
56 | = 0.4 - 2021-01-19 =
57 | * BUG FIX: Fixed an issue where reCAPTCHA wasn't initialized correctly - fixes issues on WordPress 5.5+. Thanks @jarryd-long
58 | 
59 | = 0.3 =
60 | * Fixed JavaScript syntax issues within the V3 reCAPTCHA handler
61 | * Fixed bug where V2 reCAPTCHA field would still be rendered when V3 is enabled
62 | 
63 | = 0.2 =
64 | * Added invisible reCAPTCHA support and option
65 | * Added reCAPTCHA v3 support and option
66 | * Changed script loader to support both V2 and V3 reCAPTCHA
67 | * Improved JavaScript to better support V2 and V3 reCAPTCHA
68 | * Removed reCAPTCHA field output from email summary
69 | 
70 | = 0.1.1 =
71 | * Allow more than one recaptcha per page.
72 | 
73 | = 0.1.0 =
74 | * First release
75 | 
76 | == Upgrade Notice ==
77 | 
78 | = 0.4 =
79 | * Please upgrade to get compatibility changes for WordPress 5.5+
80 | 
81 | = 0.2 =
82 | * Please upgrade to support V3 recaptcha and more.
83 | 
84 | = 0.1.1 =
85 | * Please upgrade for enhancements.
86 | 
87 | = 0.1.0 =
88 | *First Release
89 | 


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/fields/recaptcha/field.php:
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  1 | <?php
  2 | /**
  3 |  * Renders the field in the visitor-facing form
  4 |  *
  5 |  * @package caldera-forms-anti-spam
  6 |  */
  7 | 
  8 | echo $wrapper_before; ?>
  9 | 
 10 | <?php echo empty( $field['config']['recapv'] ) ? $field_label : ''; ?>
 11 | 
 12 | <?php
 13 | 
 14 | if(false !== strpos($field_input_class, 'has-error')){
 15 | 	echo '<span class="has-error">';
 16 | 	echo 	$field_caption;
 17 | 	echo '</span>';
 18 | }
 19 | 
 20 | if( empty( $field['config']['public_key'] ) ){
 21 | 	$field['config']['public_key'] = null;
 22 | }
 23 | 
 24 | /**
 25 |  We have moved the enqueue here as this allows us to alter the URL on the fly
 26 | */
 27 | $language = get_locale();
 28 | $script_url = "https://www.google.com/recaptcha/api.js?onload=cf_recaptcha_is_ready&render=explicit&hl=" . $language;
 29 | if (!empty($field['config']['recapv']) && $field['config']['recapv'] === 1 ) {
 30 | 	$script_url = "https://www.google.com/recaptcha/api.js?onload=cf_recaptcha_is_ready&render=" . trim($field['config']['public_key']) . "&hl=" . $language;
 31 | }
 32 | // wp_enqueue_script('cf-anti-spam-recapthca-lib', $script_url);
 33 | 
 34 | ?>
 35 | 
 36 | <?php echo $field_before; ?>
 37 | 
 38 | <?php echo Caldera_Forms_Field_Input::html( $field, $field_structure, $form ); ?>
 39 | 
 40 | <?php if (!empty($field['config']['recapv']) && $field['config']['recapv'] === 1 ) { ?>
 41 | 	<div id="cap<?php echo $field_id; ?>"></div>
 42 | <?php } else { ?>
 43 | 	<div id="cap<?php echo $field_id; ?>" class="g-recaptcha" data-sitekey="<?php echo $field['config']['public_key']; ?>" <?php if (!empty($field['config']['invis']) && $field['config']['invis'] === 1 ) { ?>data-size="invisible" <?php } ?>></div>
 44 | <?php } ?>
 45 | 
 46 | <script>
 47 | 	if(!window.cf_anti_loading_recaptcha) {
 48 | 		window.cf_anti_loading_recaptcha = true;
 49 | 		jQuery('.cf_anti_capfld').html('');
 50 | 		jQuery('script[src="<?php echo $script_url ?>"]').remove();
 51 | 		jQuery('<script>').attr('src', "<?php echo $script_url ?>").appendTo('body');
 52 | 	}
 53 | </script>
 54 | 
 55 | <?php echo $field_caption; ?>
 56 | 
 57 | <?php echo $field_after; ?>
 58 | 
 59 | <?php
 60 | 	echo $wrapper_after;
 61 | 	ob_start();
 62 | ?>
 63 | 
 64 | <script>
 65 | 
 66 | 	var cf_recaptcha_is_ready = function (){
 67 | 		window.cf_anti_loading_recaptcha = false;
 68 | 		jQuery(document).trigger("cf-anti-init-recaptcha");
 69 | 	}
 70 | 
 71 | 	jQuery( function($){
 72 |         function init_recaptcha_<?php echo $field_id; ?>(){
 73 | 
 74 |             var captch = jQuery('#cap<?php echo $field_id; ?>').addClass('cf_anti_capfld');
 75 |             <?php if (!empty($field['config']['recapv']) && $field['config']['recapv'] === 1 ) { ?>
 76 |             grecaptcha.ready(function() {
 77 |                 var captch = jQuery('#cap<?php echo $field_id; ?>');
 78 |                 grecaptcha.execute("<?php echo trim( $field['config']['public_key'] ); ?>", {action: 'homepage'}).then(function(token) {
 79 | 					if( token !== "" ){ $("#cf-recapv-token").val( token ); }
 80 |                 });
 81 |             });
 82 |             <?php } else { ?>
 83 | 
 84 |             captch.empty();
 85 | 
 86 | 
 87 |             grecaptcha.render( captch[0], { "sitekey" : "<?php echo trim( $field['config']['public_key'] ); ?>", "theme" : "<?php echo isset( $field['config']['theme'] ) ? $field['config']['theme'] : "light"; ?>" } );
 88 | 
 89 |             // Only load grecaptcha.execute if it's set to invisible mode.
 90 |             <?php if ( !empty( $field['config']['invis']) && $field['config']['invis'] === 1 ) { ?> grecaptcha.execute(); <?php } ?>
 91 |             <?php } ?>
 92 |         }
 93 | 
 94 | 		jQuery(document).on("cf-anti-init-recaptcha", function(){
 95 | 			setTimeout( init_recaptcha_<?php echo $field_id; ?>(), 1000 );
 96 | 		});
 97 | 	});
 98 | 
 99 | </script>
100 | 
101 | <?php
102 | 
103 | 	$script_template = ob_get_clean();
104 | 
105 | 	Caldera_Forms_Render_Util::add_inline_data( $script_template, $form );


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/classes/recapatcha.php:
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  1 | <?php
  2 | class CF_Antispam_Recapatcha {
  3 | 	/**
  4 | 	 * Overwrite old field in Caldera Forms
  5 | 	 *
  6 | 	 * @since 0.1.0
  7 | 	 *
  8 | 	 * @uses "caldera_forms_get_field_types" filter
  9 | 	 *
 10 | 	 * @param array $fields Registered fields
 11 | 	 *
 12 | 	 * @return array
 13 | 	 */
 14 | 	public function add_field( $fields ){
 15 | 
 16 | 		$fields[ 'recaptcha'  ]      = array(
 17 | 			"field"       => __( 'reCAPTCHA', 'cf-anti-spam' ),
 18 | 			"description" => __( 'reCAPTCHA anti-spam field', 'cf-anti-spam' ),
 19 | 			"file"        => CF_ANTISPAM_PATH . "fields/recaptcha/field.php",
 20 | 			"category"    => __( 'Special', 'cf-anti-spam' ),
 21 | 			"handler"     => array( $this, 'handler' ),
 22 | 			"capture"     => false,
 23 | 			"setup"       => array(
 24 | 			"template"      => CF_ANTISPAM_PATH . "fields/recaptcha/config.php",
 25 | 			"preview"       => CF_ANTISPAM_PATH . "fields/recaptcha/preview.php",
 26 | 			"not_supported" => array(
 27 | 				'caption',
 28 | 			'required'
 29 | 				),
 30 | 			),
 31 | 			/*"scripts" => array( 'https://www.google.com/recaptcha/api.js?onload=cf_recaptcha_is_ready&render=explicit&hl=' . $language )*/
 32 | 		);
 33 | 
 34 | 		return $fields;
 35 | 	}
 36 | 
 37 | 	/**
 38 | 	 * Remove the recaptcha field type from the summary email using the caldera hook
 39 | 	 *
 40 | 	 * @since 0.2
 41 | 	 *
 42 | 	 * @uses "caldera_forms_summary_magic_fields" filter
 43 | 	 *
 44 | 	 * @param array $fields Fields in form submission
 45 | 	 * @param object $form Form object from caldera
 46 | 	 *
 47 | 	 * @return array
 48 | 	 */
 49 | 	public function remove_from_summary( $fields, $form ){
 50 | 		if(!empty($fields)){
 51 | 			foreach($fields as $field_id => $field){
 52 | 				$type = Caldera_Forms_Field_Util::get_type($field, $form);
 53 | 				if($type === 'recaptcha'){
 54 | 					unset($fields[$field_id]);
 55 | 				}
 56 | 			}
 57 | 		}
 58 | 
 59 | 		return $fields;
 60 | 	}
 61 | 
 62 | 	/**
 63 | 	 * Modify field attributes so recpatcha field has type "hidden" not "recpatcha"
 64 | 	 *
 65 | 	 * @since 0.1.0
 66 | 	 *
 67 | 	 * @uses "caldera_forms_field_attributes-recaptcha" filter
 68 | 	 *
 69 | 	 * @param $attrs
 70 | 	 * @param $form
 71 | 	 *
 72 | 	 * @return array
 73 | 	 */
 74 | 	public function field_attrs( $attrs, $form ){
 75 | 		$attrs[ 'type' ] = 'hidden';
 76 | 		return $attrs;
 77 | 	}
 78 | 	/**
 79 | 	 * Check that the recaptcha response is sent on forms that have a recapthca field.
 80 | 	 *
 81 | 	 * @since 0.1.0
 82 | 	 *
 83 | 	 * @uses "caldera_forms_validate_field_recaptcha"
 84 | 	 *
 85 | 	 * @param $entry
 86 | 	 * @param $field
 87 | 	 * @param $form
 88 | 	 *
 89 | 	 * @return WP_Error|boolean
 90 | 	 */
 91 | 	public function check_for_captcha( $entry, $field, $form   ){
 92 | 		if ( ! isset( $_POST[ 'g-recaptcha-response' ] ) || empty( $_POST[ 'g-recaptcha-response' ] ) ) {
 93 | 			return new WP_Error( 'error' );
 94 | 		}
 95 | 		return true;
 96 | 	}
 97 | 	/**
 98 | 	 * Field handler -- checks for recaptcha and verifies  it if possible
 99 | 	 *
100 | 	 * @since 0.1.0
101 | 	 *
102 | 	 * @param string $value Field value, should be empty
103 | 	 * @param array $field Field config
104 | 	 * @param array $form Form config
105 | 	 *
106 | 	 * @return WP_Error|boolean
107 | 	 */
108 | 	public function handler( $value, $field, $form ){
109 | 
110 | 		//JS didn't load to generate a token for the recaptcha. Let the form submit without error.
111 | 		if( $_POST[ 'g-recaptcha-response' ] === 'ready' ){
112 | 			//Workaround for JS issues in Caldera. We know JS has loaded, but reCAPTCHA faile.
113 | 			return true;	
114 | 		}
115 | 
116 | 		/**
117 | 		 * Check if this is V3, then we grab the dynamically generated field value
118 | 		*/
119 | 		if (!empty($field['config']['recapv']) && $field['config']['recapv'] === 1 ) {
120 | 			if(!empty($_POST['cf-recapv-token'])){
121 | 				$_POST[ 'g-recaptcha-response' ] = $_POST['cf-recapv-token'];
122 | 			}
123 | 		}
124 | 
125 | 		if ( ! isset( $_POST[ 'g-recaptcha-response' ] ) || empty( $_POST[ 'g-recaptcha-response' ] ) ) {
126 | 			return new WP_Error( 'error' );
127 | 		}
128 | 		$args = array(
129 | 			'secret'   => $field[ 'config' ][ 'private_key' ],
130 | 			'response' => sanitize_text_field( $_POST[ 'g-recaptcha-response' ] )
131 | 		);
132 | 		$request = wp_remote_get( add_query_arg( $args, 'https://www.google.com/recaptcha/api/siteverify' ) );
133 | 		$result  = json_decode( wp_remote_retrieve_body( $request ) );
134 | 		if ( empty( $result->success ) ) {
135 | 			return new WP_Error( 'error',
136 | 				__( "The captcha wasn't entered correctly.", 'cf-anti-spam' ) . ' <a href="#" class="reset_' . sanitize_text_field( $_POST[ $field[ 'ID' ] ] ) . '">' . __( 'Reset', 'cf-anti-spam' ) . '<a>.'
137 | 			);
138 | 		}
139 | 		return true;
140 | 	}
141 | }


--------------------------------------------------------------------------------