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<?php
use WPForms\Tasks\Actions\EntryEmailsTask;
/**
* Emails.
*
* This class handles all (notification) emails sent by WPForms.
*
* Heavily influenced by the great AffiliateWP plugin by Pippin Williamson.
* https://github.com/AffiliateWP/AffiliateWP/blob/master/includes/emails/class-affwp-emails.php
*
* @since 1.1.3
*/
class WPForms_WP_Emails {
/**
* Store the from address.
*
* @since 1.1.3
*
* @var string
*/
private $from_address;
/**
* Store the from name.
*
* @since 1.1.3
*
* @var string
*/
private $from_name;
/**
* Store the reply-to address.
*
* @since 1.1.3
*
* @var string
*/
private $reply_to = false;
/**
* Store the carbon copy addresses.
*
* @since 1.3.1
*
* @var string
*/
private $cc = false;
/**
* Store the email content type.
*
* @since 1.1.3
*
* @var string
*/
private $content_type;
/**
* Store the email headers.
*
* @since 1.1.3
*
* @var string
*/
private $headers;
/**
* Whether to send email in HTML.
*
* @since 1.1.3
*
* @var bool
*/
private $html = true;
/**
* The email template to use.
*
* @since 1.1.3
*
* @var string
*/
private $template;
/**
* Form data and settings.
*
* @since 1.1.3
*
* @var array
*/
public $form_data = array();
/**
* Fields, formatted, and sanitized.
*
* @since 1.1.3
*
* @var array
*/
public $fields = array();
/**
* Entry ID.
*
* @since 1.2.3
*
* @var int
*/
public $entry_id = '';
/**
* Notification ID that is currently being processed.
*
* @since 1.5.7
*
* @var int
*/
public $notification_id = '';
/**
* Get things going.
*
* @since 1.1.3
*/
public function __construct() {
if ( 'none' === $this->get_template() ) {
$this->html = false;
}
add_action( 'wpforms_email_send_before', array( $this, 'send_before' ) );
add_action( 'wpforms_email_send_after', array( $this, 'send_after' ) );
}
/**
* Set a property.
*
* @since 1.1.3
*
* @param string $key Object property key.
* @param mixed $value Object property value.
*/
public function __set( $key, $value ) {
$this->$key = $value;
}
/**
* Get the email from name.
*
* @since 1.1.3
*
* @return string The email from name
*/
public function get_from_name() {
if ( ! empty( $this->from_name ) ) {
$this->from_name = $this->process_tag( $this->from_name );
} else {
$this->from_name = get_bloginfo( 'name' );
}
return apply_filters( 'wpforms_email_from_name', wpforms_decode_string( $this->from_name ), $this );
}
/**
* Get the email from address.
*
* @since 1.1.3
*
* @return string The email from address.
*/
public function get_from_address() {
if ( ! empty( $this->from_address ) ) {
$this->from_address = $this->process_tag( $this->from_address );
} else {
$this->from_address = get_option( 'admin_email' );
}
return apply_filters( 'wpforms_email_from_address', wpforms_decode_string( $this->from_address ), $this );
}
/**
* Get the email reply-to.
*
* @since 1.1.3
*
* @return string The email reply-to address.
*/
public function get_reply_to() {
if ( ! empty( $this->reply_to ) ) {
$this->reply_to = $this->process_tag( $this->reply_to );
if ( ! is_email( $this->reply_to ) ) {
$this->reply_to = false;
}
}
return apply_filters( 'wpforms_email_reply_to', wpforms_decode_string( $this->reply_to ), $this );
}
/**
* Get the email carbon copy addresses.
*
* @since 1.3.1
*
* @return string The email reply-to address.
*/
public function get_cc() {
if ( ! empty( $this->cc ) ) {
$this->cc = $this->process_tag( $this->cc );
$addresses = array_map( 'trim', explode( ',', $this->cc ) );
foreach ( $addresses as $key => $address ) {
if ( ! is_email( $address ) ) {
unset( $addresses[ $key ] );
}
}
$this->cc = implode( ',', $addresses );
}
return apply_filters( 'wpforms_email_cc', wpforms_decode_string( $this->cc ), $this );
}
/**
* Get the email content type.
*
* @since 1.1.3
*
* @return string The email content type.
*/
public function get_content_type() {
if ( ! $this->content_type && $this->html ) {
$this->content_type = apply_filters( 'wpforms_email_default_content_type', 'text/html', $this );
} elseif ( ! $this->html ) {
$this->content_type = 'text/plain';
}
return apply_filters( 'wpforms_email_content_type', $this->content_type, $this );
}
/**
* Get the email headers.
*
* @since 1.1.3
*
* @return string The email headers.
*/
public function get_headers() {
if ( ! $this->headers ) {
$this->headers = "From: {$this->get_from_name()} <{$this->get_from_address()}>\r\n";
if ( $this->get_reply_to() ) {
$this->headers .= "Reply-To: {$this->get_reply_to()}\r\n";
}
if ( $this->get_cc() ) {
$this->headers .= "Cc: {$this->get_cc()}\r\n";
}
$this->headers .= "Content-Type: {$this->get_content_type()}; charset=utf-8\r\n";
}
return apply_filters( 'wpforms_email_headers', $this->headers, $this );
}
/**
* Build the email.
*
* @since 1.1.3
*
* @param string $message The email message.
*
* @return string
*/
public function build_email( $message ) {
// Plain text email shortcut.
if ( false === $this->html ) {
$message = $this->process_tag( $message );
$message = str_replace( '{all_fields}', $this->wpforms_html_field_value( false ), $message );
return apply_filters( 'wpforms_email_message', wpforms_decode_string( $message ), $this );
}
/*
* Generate an HTML email.
*/
ob_start();
$this->get_template_part( 'header', $this->get_template(), true );
// Hooks into the email header.
do_action( 'wpforms_email_header', $this );
$this->get_template_part( 'body', $this->get_template(), true );
// Hooks into the email body.
do_action( 'wpforms_email_body', $this );
$this->get_template_part( 'footer', $this->get_template(), true );
// Hooks into the email footer.
do_action( 'wpforms_email_footer', $this );
$message = $this->process_tag( $message );
$message = nl2br( $message );
$body = ob_get_clean();
$message = str_replace( '{email}', $message, $body );
$message = str_replace( '{all_fields}', $this->wpforms_html_field_value( true ), $message );
$message = make_clickable( $message );
return apply_filters( 'wpforms_email_message', $message, $this );
}
/**
* Send the email.
*
* @since 1.1.3
*
* @param string $to The To address.
* @param string $subject The subject line of the email.
* @param string $message The body of the email.
* @param array $attachments Attachments to the email.
*
* @return bool
*/
public function send( $to, $subject, $message, $attachments = array() ) {
if ( ! did_action( 'init' ) && ! did_action( 'admin_init' ) ) {
_doing_it_wrong( __FUNCTION__, esc_html__( 'You cannot send emails with WPForms_WP_Emails() until init/admin_init has been reached.', 'wpforms-lite' ), null );
return false;
}
// Don't send anything if emails have been disabled.
if ( $this->is_email_disabled() ) {
return false;
}
// Don't send if email address is invalid.
if ( ! is_email( $to ) ) {
return false;
}
// Hooks before email is sent.
do_action( 'wpforms_email_send_before', $this );
// Deprecated filter for $attachments.
$attachments = apply_filters_deprecated(
'wpforms_email_attachments',
array( $attachments, $this ),
'1.5.7 of the WPForms plugin',
'wpforms_emails_send_email_data'
);
/*
* Allow to filter data on per-email basis,
* useful for localizations based on recipient email address, form settings,
* or for specific notifications - whatever available in WPForms_WP_Emails class.
*/
$data = apply_filters(
'wpforms_emails_send_email_data',
array(
'to' => $to,
'subject' => $subject,
'message' => $message,
'headers' => $this->get_headers(),
'attachments' => $attachments,
),
$this
);
$send_same_process = apply_filters(
'wpforms_tasks_entry_emails_trigger_send_same_process',
false,
$this->fields,
! empty( wpforms()->entry ) ? wpforms()->entry->get( $this->entry_id ) : [],
$this->form_data,
$this->entry_id,
'entry'
);
if (
$send_same_process ||
! empty( $this->form_data['settings']['disable_entries'] )
) {
// Let's do this NOW.
$result = wp_mail(
$data['to'],
$this->get_prepared_subject( $data['subject'] ),
$this->build_email( $data['message'] ),
$data['headers'],
$data['attachments']
);
} else {
// Schedule the email.
$result = (bool) ( new EntryEmailsTask() )
->params(
$data['to'],
$this->get_prepared_subject( $data['subject'] ),
$this->build_email( $data['message'] ),
$data['headers'],
$data['attachments']
)
->register();
}
// Hooks after the email is sent.
do_action( 'wpforms_email_send_after', $this );
return $result;
}
/**
* Add filters/actions before the email is sent.
*
* @since 1.1.3
*/
public function send_before() {
add_filter( 'wp_mail_from', array( $this, 'get_from_address' ) );
add_filter( 'wp_mail_from_name', array( $this, 'get_from_name' ) );
add_filter( 'wp_mail_content_type', array( $this, 'get_content_type' ) );
}
/**
* Remove filters/actions after the email is sent.
*
* @since 1.1.3
*/
public function send_after() {
remove_filter( 'wp_mail_from', array( $this, 'get_from_address' ) );
remove_filter( 'wp_mail_from_name', array( $this, 'get_from_name' ) );
remove_filter( 'wp_mail_content_type', array( $this, 'get_content_type' ) );
}
/**
* Convert text formatted HTML. This is primarily for turning line breaks
* into <p> and <br/> tags.
*
* @since 1.1.3
*
* @param string $message Text to convert.
*
* @return string
*/
public function text_to_html( $message ) {
if ( 'text/html' === $this->content_type || true === $this->html ) {
$message = wpautop( $message );
}
return $message;
}
/**
* Process a smart tag.
* Decodes entities and sanitized (keeping line breaks) by default.
*
* @uses wpforms_decode_string()
*
* @since 1.1.3
* @since 1.6.0 Deprecated 2 params: $sanitize, $linebreaks.
*
* @param string $string String that may contain tags.
*
* @return string
*/
public function process_tag( $string = '' ) {
return apply_filters( 'wpforms_process_smart_tags', $string, $this->form_data, $this->fields, $this->entry_id );
}
/**
* Process the all fields smart tag if present.
*
* @since 1.1.3
*
* @param bool $is_html_email Toggle to use HTML or plaintext.
*
* @return string
*/
public function wpforms_html_field_value( $is_html_email = true ) { // phpcs:ignore
if ( empty( $this->fields ) ) {
return '';
}
if ( empty( $this->form_data['fields'] ) ) {
$is_html_email = false;
}
$message = '';
if ( $is_html_email ) {
/*
* HTML emails.
*/
ob_start();
// Hooks into the email field.
do_action( 'wpforms_email_field', $this );
$this->get_template_part( 'field', $this->get_template(), true );
$field_template = ob_get_clean();
// Check to see if user has added support for field type.
$other_fields = apply_filters( 'wpforms_email_display_other_fields', array(), $this );
$x = 1;
foreach ( $this->form_data['fields'] as $field_id => $field ) {
$field_name = '';
$field_val = '';
// If the field exists in the form_data but not in the final
// field data, then it's a non-input based field, "other fields".
if ( empty( $this->fields[ $field_id ] ) ) {
if ( empty( $other_fields ) || ! in_array( $field['type'], $other_fields, true ) ) {
continue;
}
if ( $field['type'] === 'divider' ) {
$field_name = ! empty( $field['label'] ) ? str_repeat( '—', 3 ) . ' ' . $field['label'] . ' ' . str_repeat( '—', 3 ) : null;
$field_val = ! empty( $field['description'] ) ? $field['description'] : '';
} elseif ( $field['type'] === 'pagebreak' ) {
if ( ! empty( $field['position'] ) && $field['position'] === 'bottom' ) {
continue;
}
$title = ! empty( $field['title'] ) ? $field['title'] : esc_html__( 'Page Break', 'wpforms-lite' );
$field_name = str_repeat( '—', 6 ) . ' ' . $title . ' ' . str_repeat( '—', 6 );
} elseif ( $field['type'] === 'html' ) {
// If CL is enabled and the field is conditionally hidden, hide it from message.
if ( ! empty( $this->form_data['fields'][ $field['id'] ]['conditionals'] ) && ! wpforms_conditional_logic_fields()->field_is_visible( $this->form_data, $field['id'] ) ) {
continue;
}
$field_name = ! empty( $field['name'] ) ? $field['name'] : esc_html__( 'HTML / Code Block', 'wpforms-lite' );
$field_val = $field['code'];
}
} else {
if (
! apply_filters( 'wpforms_email_display_empty_fields', false ) &&
( ! isset( $this->fields[ $field_id ]['value'] ) || (string) $this->fields[ $field_id ]['value'] === '' )
) {
continue;
}
$field_name = $this->fields[ $field_id ]['name'];
$field_val = empty( $this->fields[ $field_id ]['value'] ) && ! is_numeric( $this->fields[ $field_id ]['value'] ) ? '<em>' . esc_html__( '(empty)', 'wpforms-lite' ) . '</em>' : $this->fields[ $field_id ]['value'];
}
if ( empty( $field_name ) && null !== $field_name ) {
$field_name = sprintf( /* translators: %d - field ID. */
esc_html__( 'Field ID #%d', 'wpforms-lite' ),
absint( $field['id'] )
);
}
$field_item = $field_template;
if ( 1 === $x ) {
$field_item = str_replace( 'border-top:1px solid #dddddd;', '', $field_item );
}
$field_item = str_replace( '{field_name}', $field_name, $field_item );
$field_item = str_replace(
'{field_value}',
apply_filters(
'wpforms_html_field_value',
$field_val,
isset( $this->fields[ $field_id ] ) ? $this->fields[ $field_id ] : $field,
$this->form_data,
'email-html'
),
$field_item
);
$message .= wpautop( $field_item );
$x ++;
}
} else {
/*
* Plain Text emails.
*/
foreach ( $this->fields as $field ) {
if (
! apply_filters( 'wpforms_email_display_empty_fields', false ) &&
( ! isset( $field['value'] ) || (string) $field['value'] === '' )
) {
continue;
}
$field_val = empty( $field['value'] ) && ! is_numeric( $field['value'] ) ? esc_html__( '(empty)', 'wpforms-lite' ) : $field['value'];
$field_name = $field['name'];
if ( empty( $field_name ) ) {
$field_name = sprintf( /* translators: %d - field ID. */
esc_html__( 'Field ID #%d', 'wpforms-lite' ),
absint( $field['id'] )
);
}
$message .= '--- ' . $field_name . " ---\r\n\r\n";
$field_value = $field_val . "\r\n\r\n";
$message .= apply_filters( 'wpforms_plaintext_field_value', $field_value, $field, $this->form_data );
}
}
if ( empty( $message ) ) {
$empty_message = esc_html__( 'An empty form was submitted.', 'wpforms-lite' );
$message = $is_html_email ? wpautop( $empty_message ) : $empty_message;
}
return $message;
}
/**
* Email kill switch if needed.
*
* @since 1.1.3
*
* @return bool
*/
public function is_email_disabled() {
return (bool) apply_filters( 'wpforms_disable_all_emails', false, $this );
}
/**
* Get the enabled email template.
*
* @since 1.1.3
*
* @return string When filtering return 'none' to switch to text/plain email.
*/
public function get_template() {
if ( ! $this->template ) {
$this->template = wpforms_setting( 'email-template', 'default' );
}
return apply_filters( 'wpforms_email_template', $this->template );
}
/**
* Retrieve a template part. Taken from bbPress.
*
* @since 1.1.3
*
* @param string $slug Template file slug.
* @param string $name Optional. Default null.
* @param bool $load Maybe load.
*
* @return string
*/
public function get_template_part( $slug, $name = null, $load = true ) {
// Setup possible parts.
$templates = array();
if ( isset( $name ) ) {
$templates[] = $slug . '-' . $name . '.php';
}
$templates[] = $slug . '.php';
// Return the part that is found.
return $this->locate_template( $templates, $load, false );
}
/**
* Retrieve the name of the highest priority template file that exists.
*
* Search in the STYLESHEETPATH before TEMPLATEPATH so that themes which
* inherit from a parent theme can just overload one file. If the template is
* not found in either of those, it looks in the theme-compat folder last.
*
* Taken from bbPress.
*
* @since 1.1.3
*
* @param string|array $template_names Template file(s) to search for, in order.
* @param bool $load If true the template file will be loaded if it is found.
* @param bool $require_once Whether to require_once or require. Default true.
* Has no effect if $load is false.
*
* @return string The template filename if one is located.
*/
public function locate_template( $template_names, $load = false, $require_once = true ) {
// No file found yet.
$located = false;
// Try to find a template file.
foreach ( (array) $template_names as $template_name ) {
// Continue if template is empty.
if ( empty( $template_name ) ) {
continue;
}
// Trim off any slashes from the template name.
$template_name = ltrim( $template_name, '/' );
// Try locating this template file by looping through the template paths.
foreach ( $this->get_theme_template_paths() as $template_path ) {
if ( file_exists( $template_path . $template_name ) ) {
$located = $template_path . $template_name;
break;
}
}
}
if ( ( true === $load ) && ! empty( $located ) ) {
load_template( $located, $require_once );
}
return $located;
}
/**
* Return a list of paths to check for template locations
*
* @since 1.1.3
*
* @return array
*/
public function get_theme_template_paths() {
$template_dir = 'wpforms-email';
$file_paths = array(
1 => trailingslashit( get_stylesheet_directory() ) . $template_dir,
10 => trailingslashit( get_template_directory() ) . $template_dir,
100 => WPFORMS_PLUGIN_DIR . 'includes/emails/templates',
);
$file_paths = apply_filters( 'wpforms_email_template_paths', $file_paths );
// Sort the file paths based on priority.
ksort( $file_paths, SORT_NUMERIC );
return array_map( 'trailingslashit', $file_paths );
}
/**
* Perform email subject preparation: process tags, remove new lines, etc.
*
* @since 1.6.1
*
* @param string $subject Email subject to post-process.
*
* @return string
*/
private function get_prepared_subject( $subject ) {
$subject = $this->process_tag( $subject );
$subject = trim( str_replace( [ "\r\n", "\r", "\n" ], ' ', $subject ) );
return wpforms_decode_string( $subject );
}
}