modified readme.txt

[danixland-contact-form.git] / danixland-contact-form.php

<?php
defined( 'ABSPATH' ) || die( 'No script kiddies please!' );

/*
Plugin Name:    danixland contact form
Description:    A simple yet powerful contact form plugin
Plugin URI:     https://danix.xyz/?p=3577
Version:        1.3
Author:         Danilo 'danix' Macr&igrave;
Author URI:     http://danix.xyz
License:        GPL2
License URI:    https://www.gnu.org/licenses/gpl-2.0.html
Domain Path:    /languages
Text Domain:    dnxcf
*/

global $dnxcf_form_version;
$dnxcf_form_version = '1.3';

/**
 * Add plugin i18n domain: dnxcf
 * @since 0.2
 */
load_plugin_textdomain( 'dnxcf', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );

/**
 * Let's load our helper file ( DB initialization and stuff )
 * @since 0.2
 */
require( dirname( __FILE__ ) . '/include/dnxcf_helper.php' );

/**
 * Check / create the database for the plugin data
 * @since 1.1.3
 */
register_activation_hook( __FILE__, 'dnxcf_set_db_version' );
register_activation_hook( __FILE__, 'dnxcf_db_check' );

if ( is_admin() ) {
        require_once( dirname( __FILE__ ) . '/include/dnxcf_settings.php' );
}

// Add Genericons, used in the contact form.
function dnxcf_scripts() {
        wp_enqueue_style( 'dnxcf_icons', plugins_url( '/style/dnxcf-font.css', __FILE__ ), array(), '1.3' );
        wp_enqueue_style( 'dnxcf_helper_style', plugins_url( '/style/dnxcf_style.css', __FILE__ ), array(), '4.4.2' );
}
add_action( 'wp_enqueue_scripts', 'dnxcf_scripts' );

/*
 * The actual contact form displayed using a shortcode
 * @since 0.1
 */
add_shortcode( 'dnx_contactform', 'dnxcf_return_form' );

/*
 * we use output buffer so that the form will stay at the bottom of content
 * allowing the user to write some text in the body of the page before
 * displaying the form with the shortcode
 * @since 0.5
 */
function dnxcf_return_form() {
        ob_start();
        dnxcf_display_form();
        $output = ob_get_contents();
        ob_end_clean();
        return $output;
}

/*
 * Here we handle the input/output flow
 * @since 0.2
 */
function dnxcf_display_form() {
        global $dnxcf_form_version, $dnxcf_options;
        $dnxcf_options = get_option( 'dnxcf_options' );

        $dnxcf_pid            = md5( $dnxcf_options['dnxcf_pid_key'] );
        $dnxcf_vers_id        = md5( $dnxcf_form_version );
        $dnxcf_date_id        = md5( date( 'TOZ' ) );
        $dnxcf_eml_id         = md5( $dnxcf_options['dnxcf_recv_email'] );
        $dnxcf_form_id        = $dnxcf_pid . $dnxcf_vers_id . $dnxcf_eml_id . $dnxcf_date_id;
        $dnxcf_form_id        = strtoupper( md5( $dnxcf_form_id ) );
        $dnxcf_form_id        = 'ID' . $dnxcf_form_id . 'DNX';
        $dnxcf_send_value     = trim( strtolower( 'submit_' . md5( $dnxcf_form_id ) ) );

        if ( isset( $_POST[ $dnxcf_send_value ] ) ) { // the form has been submitted
                $dnxcf_email_output = ( '1' == $dnxcf_options['dnxcf_content_type'] ) ? 'text/plain' : 'text/html';
                $dnxcf_form_name = 'dnxcf_form_' . $dnxcf_pid;
                $dnxcf_form_action = 'dnxcf_submit_' . $dnxcf_form_id;
                // valid html used to validate the comment content.
                $valid_html = array(
                        'a' => array(
                                'href' => array(),
                                'title' => array(),
                        ),
                        'br' => array(),
                        'em' => array(),
                        'strong' => array(),
                        'p' => array(),
                        'pre' => array(),
                        'code' => array(),
                );
                // security checks before submitting the form
                if ( $_SERVER['REQUEST_URI'] == $_POST['_wp_http_referer'] && wp_verify_nonce( $_POST[ $dnxcf_form_name ], $dnxcf_form_action ) ) {

                        // nonce and referrer are correct. Let's verify if the honeypot field is empty.
                        if ( empty( $_POST['dnxcf_pagelikes'] ) ) {

                                $dnxcf_posted = array();
                                // let's gather some data about the user submitting the form
                                $dnxcf_ltd    = trim( strip_tags( stripslashes( current_time( 'mysql' ) ) ) );
                                $dnxcf_hst    = trim( strip_tags( stripslashes( getenv( 'REMOTE_ADDR' ) ) ) );
                                $dnxcf_ua     = trim( strip_tags( stripslashes( $_SERVER['HTTP_USER_AGENT'] ) ) );
                                // our posted options, arranged in one nice array
                                $dnxcf_posted['dnxcf_name'] = sanitize_text_field( $_POST['dnxcf_name'] );
                                $dnxcf_posted['dnxcf_email'] = sanitize_email( $_POST['dnxcf_email'] );
                                $dnxcf_posted['dnxcf_website'] = esc_url( $_POST['dnxcf_website'] );
                                $dnxcf_posted['dnxcf_subject'] = sanitize_text_field( $_POST['dnxcf_subject'] );
                                $dnxcf_posted['dnxcf_message'] = wp_kses( $_POST['dnxcf_message'], $valid_html );
                                // let's begin with our email data, like receiver email, subject ecc.
                                $dnxcf_to         = $dnxcf_options['dnxcf_recv_email'];
                                $dnxcf_headers    = 'Reply-To: ' . $dnxcf_posted['dnxcf_email'];
                                $dnxcf_subject    = __( 'Contact from "', 'dnxcf' ) . get_bloginfo( 'name' ) . '" - ' . $dnxcf_posted['dnxcf_subject'];

                                // check for our content type and arrange our info accordingly
                                if ( 'text/html' == $dnxcf_email_output ) {
                                        require( apply_filters( 'dnxcf_template_file', dirname( __FILE__ ) . '/include/dnxcf_mail_template_danixland.php' ) );
                                        $dnxcf_email_data = array(
                                                'ownname' => $dnxcf_options['dnxcf_recv_name'],
                                                'site' => get_bloginfo( 'name' ),
                                                'time' => $dnxcf_ltd,
                                                'host' => $dnxcf_hst,
                                                'ua' => $dnxcf_ua,
                                        );
                                        $dnxcf_message = dnxcf_email_content( $dnxcf_email_data, $dnxcf_posted );
                                } else { // content_type is set to text/plain
                                        $dnxcf_message = sprintf(
                                                __( "Hello \"%1\$s\",\nyou are being contacted by %2\$s on %3\$s.\n%4\$s has provided the following informations:\n\tEmail:\t\t%5\$s\n\tWebsite:\t%6\$s\n\tMessage:\n\n%7\$s", 'dnxcf' ),
                                                $dnxcf_options['dnxcf_recv_name'],
                                                $dnxcf_posted['dnxcf_name'],
                                                get_bloginfo( 'name' ),
                                                $dnxcf_posted['dnxcf_name'],
                                                $dnxcf_posted['dnxcf_email'],
                                                $dnxcf_posted['dnxcf_website'],
                                                $dnxcf_posted['dnxcf_message']
                                        );
                                        $dnxcf_message .= "\n\n##-----------#-----------#-----------##\n\n";
                                        $dnxcf_message .= sprintf(
                                                __( "We have also collected the following informations:\n\tBrowser:\t%1\$s\n\tTime:\t\t%2\$s\n\tIP Address:\t%3\$s\n", 'dnxcf' ),
                                                $dnxcf_ua,
                                                $dnxcf_ltd,
                                                $dnxcf_hst
                                        );
                                } // end check for mail_content_type

                                $dnxcf_mailed = wp_mail( $dnxcf_to, $dnxcf_subject, $dnxcf_message, $dnxcf_headers );

                                if ( $dnxcf_mailed ) {
                                        ?>
                                <p id="dnxcf_success"><?php _e( 'your email was sent successfully. Here\'s the data you submitted via our form.', 'dnxcf' ); ?></p>
                                <p>
                                        <dl>
                                                <dt><?php _e( 'Your Name:', 'dnxcf' ); ?></dt>
                                                <dd><?php echo $dnxcf_posted['dnxcf_name']; ?></dd>
                                                <dt><?php _e( 'Your e-mail:', 'dnxcf' ); ?></dt>
                                                <dd><?php echo $dnxcf_posted['dnxcf_email']; ?></dd>
                                                <dt><?php _e( 'Subject of your message:', 'dnxcf' ); ?></dt>
                                                <dd><?php echo $dnxcf_posted['dnxcf_subject']; ?></dd>
                                                <dt><?php _e( 'Text of your Message:', 'dnxcf' ); ?></dt>
                                                <dd><blockquote><?php echo wptexturize( wpautop( $dnxcf_posted['dnxcf_message'] ) ); ?></blockquote></dd>
                                        </dl>
                                </p>
                                <p><?php _e( 'we also collected some data for tecnical reasons.', 'dnxcf' ); ?></p>
                                <p>
                                        <dl>
                                                <dt><?php _e( 'Your IP address:', 'dnxcf' ); ?></dt>
                                                <dd><?php echo $dnxcf_hst; ?></dd>
                                                <dt><?php _e( 'Your Browser:', 'dnxcf' ); ?></dt>
                                                <dd><?php echo $dnxcf_ua; ?></dd>
                                        </dl>
                                </p>
                                <?php } else { ?>
                                <p id="dnxcf_result_failure"><?php printf( __( 'there was a problem processing your email. Please contact the <a href="mailto:%s">administrator</a>.', 'dnxcf' ), get_bloginfo( 'admin_email' ) ); ?></p>
                                <?php }
                        } else {
                                // dnxcf_pagelikes was not empty. This is a problem. ?>
                                <p id="dnxcf_spammer"><?php _e( 'looks like you don\'t belong here. We don\'t like spammers. Go away now!', 'dnxcf' ); ?></p>
                        <?php }
                } else { // Houston we have a problem, spammer detected
                                // we might want to use the data we have and send a mail to the admin just in case...
                        ?>
        <p id="dnxcf_spammer"><?php _e( 'looks like you don\'t belong here. We don\'t like spammers. Go away now!', 'dnxcf' ); ?></p>
                        <?php
                } // end check for wp_nonce
        } else { // the post hasn't been submitted. Let's show the form
                global $dnxcf_options;
                $dnxcf_options = get_option( 'dnxcf_options' );
                ?>
        <!-- begin #dnxcf_form -->
        <form id="dnxcf_form" method="post" action="<?php echo esc_url( $_SERVER['REQUEST_URI'] ); ?>">
                <?php wp_nonce_field( 'dnxcf_submit_' . $dnxcf_form_id, 'dnxcf_form_' . $dnxcf_pid, true, true ); ?>
                <p class="comment-notes"><?php _e( 'Required fields are marked ', 'dnxcf' ); ?><span class="required">*</span></p>
                <section id="dnxcf_formwrap">
                <?php if ( $dnxcf_options['dnxcf_privacy'] ) : ?>
                        <section id="dnxcf_privacy">
                                <h4><?php _e( 'Privacy:', 'dnxcf' ); ?></h4>
                                <div class="policy"><?php echo wpautop( wptexturize( $dnxcf_options['dnxcf_privacy'] ) ); ?></div>
                        </section>
                <?php endif; ?>
                        <section id="dnxcf_personal">
                                <h4><?php _e( 'Personal Informations:', 'dnxcf' ); ?></h4>
                                <p class="dnxcf-form-name">
                                        <label class="dnxcf-user" for="name"><span class="screen-reader-text"><?php _e( 'Full Name', 'dnxcf' ); ?></span><span class="required">*</span></label>
                                        <input name="dnxcf_name" id="name" size="35" maxlength="40" type="text" placeholder="<?php _e( 'name', 'dnxcf' ); ?>" required autocomplete="name">
                                </p>
                                <p class="dnxcf-form-email">
                                        <label class="dnxcf-mail" for="email"><span class="screen-reader-text"><?php _e( 'email address', 'dnxcf' ); ?></span><span class="required">*</span></label>
                                        <input name="dnxcf_email" id="email" size="35" maxlength="50" type="email" placeholder="<?php _e( 'e-mail', 'dnxcf' ); ?>" required autocomplete="email">
                                </p>
                                <p class="dnxcf-form-website">
                                        <label for="website" class="dnxcf-website"><span class="screen-reader-text"><?php _e( 'website', 'dnxcf' ); ?></span></label>
                                        <input name="dnxcf_website" id="website" size="35" maxlength="50" type="url" placeholder="<?php _e( 'website', 'dnxcf' ); ?>" autocomplete="url">
                                </p>
                                <p class="dnxcf-form-pagelikes">
                                        <label for="pagelikes" class="dnxcf-like"><span class="screen-reader-text"><?php _e( 'pages you liked', 'dnxcf' ); ?></span></label>
                                        <input name="dnxcf_pagelikes" id="pagelikes" size="35" maxlength="50" type="text" placeholder="<?php _e( 'what pages you liked?', 'dnxcf' ); ?>" autocomplete="off">
                                </p>
                        </section>
                        <section id="dnxcf_message">
                                <h4><?php _e( 'your message:', 'dnxcf' ); ?></h4>
                                <p class="dnxcf-form-subject">
                                        <label class="dnxcf-tag" for="subject"><span class="screen-reader-text"><?php _e( 'subject', 'dnxcf' ); ?></span><span class="required">*</span></label>
                                        <select name="dnxcf_subject" id="subject" required>
                                        <?php
                                        global $dnxcf_options;
                                        $dnxcf_options = get_option( 'dnxcf_options' );
                                        $subject_options = $dnxcf_options['dnxcf_subject'];
                                        foreach ( $subject_options as $option ) {
                                                echo '<option value="' . $option . '">' . $option . '</option>';
                                        }
                                        ?>
                                        </select>
                                </p>
                                <p class="dnxcf-form-message">
                                        <label class="dnxcf-message" for="message"><span class="screen-reader-text"><?php _e( 'message', 'dnxcf' ); ?></span><span class="required">*</span></label>
                                        <textarea name="dnxcf_message" id="message" cols="60" rows="12" placeholder="<?php _e( 'Comment Here', 'dnxcf' ); ?>" required></textarea>
                                </p>
                        </section>
                        <section id="dnxcf_send">
                                <input type="submit" name="<?php echo $dnxcf_send_value; ?>" id="<?php echo $dnxcf_send_value; ?>" value="<?php _e( 'send message', 'dnxcf' ); ?>">
                        </section>
                </section><!-- #formwrap -->
        </form>
        <!-- end #dnxcf_form -->
                <?php

        } // end check for post submission
} // end dnxcf_display_form()
?>