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<?php
add_filter( 'wpcf7_mail_html_body', 'wpcf7_mail_html_body_autop', 10, 1 );
/**
* Filter callback that applies auto-p to HTML email message body.
*/
function wpcf7_mail_html_body_autop( $body ) {
if ( wpcf7_autop_or_not( array( 'for' => 'mail' ) ) ) {
$body = wpcf7_autop( $body );
}
return $body;
}
/**
* Class that represents an attempt to compose and send email.
*/
class WPCF7_Mail {
private static $current = null;
private $name = '';
private $locale = '';
private $template = array();
private $component = '';
private $use_html = false;
private $exclude_blank = false;
/**
* Returns the singleton instance of this class.
*/
public static function get_current() {
return self::$current;
}
/**
* Returns the name of the email template currently processed.
*
* Expected output: 'mail' or 'mail_2'
*/
public static function get_current_template_name() {
$current = self::get_current();
if ( $current instanceof self ) {
return $current->get_template_name();
}
}
/**
* Returns the name of the email template component currently processed.
*
* Expected output: 'recipient', 'sender', 'subject',
* 'additional_headers', 'body', or 'attachments'
*/
public static function get_current_component_name() {
$current = self::get_current();
if ( $current instanceof self ) {
return $current->get_component_name();
}
}
/**
* Composes and sends email based on the specified template.
*
* @param array $template Array of email template.
* @param string $name Optional name of the template, such as
* 'mail' or 'mail_2'. Default empty string.
* @return bool Whether the email was sent successfully.
*/
public static function send( $template, $name = '' ) {
self::$current = new self( $name, $template );
return self::$current->compose();
}
/**
* The constructor method.
*
* @param string $name The name of the email template.
* Such as 'mail' or 'mail_2'.
* @param array $template Array of email template.
*/
private function __construct( $name, $template ) {
$this->name = trim( $name );
$this->use_html = ! empty( $template['use_html'] );
$this->exclude_blank = ! empty( $template['exclude_blank'] );
$this->template = wp_parse_args( $template, array(
'subject' => '',
'sender' => '',
'body' => '',
'recipient' => '',
'additional_headers' => '',
'attachments' => '',
) );
if ( $submission = WPCF7_Submission::get_instance() ) {
$contact_form = $submission->get_contact_form();
$this->locale = $contact_form->locale();
}
}
/**
* Returns the name of the email template.
*/
public function name() {
return $this->name;
}
/**
* Returns the name of the email template. A wrapper method of name().
*/
public function get_template_name() {
return $this->name();
}
/**
* Returns the name of the email template component currently processed.
*/
public function get_component_name() {
return $this->component;
}
/**
* Retrieves a component from the email template.
*
* @param string $component The name of the component.
* @param bool $replace_tags Whether to replace mail-tags
* within the component.
* @return string The text representation of the email component.
*/
public function get( $component, $replace_tags = false ) {
$this->component = $component;
$use_html = ( $this->use_html && 'body' === $component );
$exclude_blank = ( $this->exclude_blank && 'body' === $component );
$template = $this->template;
$component = isset( $template[$component] ) ? $template[$component] : '';
if ( $replace_tags ) {
$component = $this->replace_tags( $component, array(
'html' => $use_html,
'exclude_blank' => $exclude_blank,
) );
if ( $use_html ) {
// Convert <example@example.com> to <example@example.com>.
$component = preg_replace_callback(
'/<(.*?)>/',
static function ( $matches ) {
if ( is_email( $matches[1] ) ) {
return sprintf( '<%s>', $matches[1] );
} else {
return $matches[0];
}
},
$component
);
if ( ! preg_match( '%<html[>\s].*</html>%is', $component ) ) {
$component = $this->htmlize( $component );
}
}
}
$this->component = '';
return $component;
}
/**
* Creates HTML message body by adding the header and footer.
*
* @param string $body The body part of HTML.
* @return string Formatted HTML.
*/
private function htmlize( $body ) {
if ( $this->locale ) {
$lang_atts = sprintf( ' %s',
wpcf7_format_atts( array(
'dir' => wpcf7_is_rtl( $this->locale ) ? 'rtl' : 'ltr',
'lang' => str_replace( '_', '-', $this->locale ),
) )
);
} else {
$lang_atts = '';
}
$header = apply_filters( 'wpcf7_mail_html_header',
'<!doctype html>
<html xmlns="http://www.w3.org/1999/xhtml"' . $lang_atts . '>
<head>
<title>' . esc_html( $this->get( 'subject', true ) ) . '</title>
</head>
<body>
',
$this
);
$body = apply_filters( 'wpcf7_mail_html_body', $body, $this );
$footer = apply_filters( 'wpcf7_mail_html_footer',
'</body>
</html>',
$this
);
return $header . $body . $footer;
}
/**
* Composes an email message and attempts to send it.
*
* @param bool $send Whether to attempt to send email. Default true.
*/
private function compose( $send = true ) {
$components = array(
'subject' => $this->get( 'subject', true ),
'sender' => $this->get( 'sender', true ),
'body' => $this->get( 'body', true ),
'recipient' => $this->get( 'recipient', true ),
'additional_headers' => $this->get( 'additional_headers', true ),
'attachments' => $this->attachments(),
);
$components = apply_filters( 'wpcf7_mail_components',
$components, wpcf7_get_current_contact_form(), $this
);
if ( ! $send ) {
return $components;
}
$subject = wpcf7_strip_newline( $components['subject'] );
$sender = wpcf7_strip_newline( $components['sender'] );
$recipient = wpcf7_strip_newline( $components['recipient'] );
$body = $components['body'];
$additional_headers = trim( $components['additional_headers'] );
$headers = "From: $sender\n";
if ( $this->use_html ) {
$headers .= "Content-Type: text/html\n";
$headers .= "X-WPCF7-Content-Type: text/html\n";
} else {
$headers .= "X-WPCF7-Content-Type: text/plain\n";
}
if ( $additional_headers ) {
$headers .= $additional_headers . "\n";
}
$attachments = array_filter(
(array) $components['attachments'],
function ( $attachment ) {
$path = path_join( WP_CONTENT_DIR, $attachment );
if ( ! wpcf7_is_file_path_in_content_dir( $path ) ) {
if ( WP_DEBUG ) {
trigger_error(
sprintf(
/* translators: %s: Attachment file path. */
__( 'Failed to attach a file. %s is not in the allowed directory.', 'contact-form-7' ),
$path
),
E_USER_NOTICE
);
}
return false;
}
if ( ! is_readable( $path ) or ! is_file( $path ) ) {
if ( WP_DEBUG ) {
trigger_error(
sprintf(
/* translators: %s: Attachment file path. */
__( 'Failed to attach a file. %s is not a readable file.', 'contact-form-7' ),
$path
),
E_USER_NOTICE
);
}
return false;
}
static $total_size = array();
if ( ! isset( $total_size[$this->name] ) ) {
$total_size[$this->name] = 0;
}
$file_size = (int) @filesize( $path );
if ( 25 * MB_IN_BYTES < $total_size[$this->name] + $file_size ) {
if ( WP_DEBUG ) {
trigger_error(
__( 'Failed to attach a file. The total file size exceeds the limit of 25 megabytes.', 'contact-form-7' ),
E_USER_NOTICE
);
}
return false;
}
$total_size[$this->name] += $file_size;
return true;
}
);
return wp_mail( $recipient, $subject, $body, $headers, $attachments );
}
/**
* Replaces mail-tags within the given text.
*/
public function replace_tags( $content, $args = '' ) {
if ( true === $args ) {
$args = array( 'html' => true );
}
$args = wp_parse_args( $args, array(
'html' => false,
'exclude_blank' => false,
) );
return wpcf7_mail_replace_tags( $content, $args );
}
/**
* Creates an array of attachments based on uploaded files and local files.
*/
private function attachments( $template = null ) {
if ( ! $template ) {
$template = $this->get( 'attachments' );
}
$attachments = array();
if ( $submission = WPCF7_Submission::get_instance() ) {
$uploaded_files = $submission->uploaded_files();
foreach ( (array) $uploaded_files as $name => $paths ) {
if ( false !== strpos( $template, "[{$name}]" ) ) {
$attachments = array_merge( $attachments, (array) $paths );
}
}
}
foreach ( explode( "\n", $template ) as $line ) {
$line = trim( $line );
if ( '' === $line or '[' == substr( $line, 0, 1 ) ) {
continue;
}
$attachments[] = path_join( WP_CONTENT_DIR, $line );
}
if ( $submission = WPCF7_Submission::get_instance() ) {
$attachments = array_merge(
$attachments,
(array) $submission->extra_attachments( $this->name )
);
}
return $attachments;
}
}
/**
* Replaces all mail-tags within the given text content.
*
* @param string $content Text including mail-tags.
* @param string|array $args Optional. Output options.
* @return string Result of replacement.
*/
function wpcf7_mail_replace_tags( $content, $args = '' ) {
$args = wp_parse_args( $args, array(
'html' => false,
'exclude_blank' => false,
) );
if ( is_array( $content ) ) {
foreach ( $content as $key => $value ) {
$content[$key] = wpcf7_mail_replace_tags( $value, $args );
}
return $content;
}
$content = explode( "\n", $content );
foreach ( $content as $num => $line ) {
$line = new WPCF7_MailTaggedText( $line, $args );
$replaced = $line->replace_tags();
if ( $args['exclude_blank'] ) {
$replaced_tags = $line->get_replaced_tags();
if ( empty( $replaced_tags )
or array_filter( $replaced_tags, 'strlen' ) ) {
$content[$num] = $replaced;
} else {
unset( $content[$num] ); // Remove a line.
}
} else {
$content[$num] = $replaced;
}
}
$content = implode( "\n", $content );
return $content;
}
add_action( 'phpmailer_init', 'wpcf7_phpmailer_init', 10, 1 );
/**
* Adds custom properties to the PHPMailer object.
*/
function wpcf7_phpmailer_init( $phpmailer ) {
$custom_headers = $phpmailer->getCustomHeaders();
$phpmailer->clearCustomHeaders();
$wpcf7_content_type = false;
foreach ( (array) $custom_headers as $custom_header ) {
$name = $custom_header[0];
$value = $custom_header[1];
if ( 'X-WPCF7-Content-Type' === $name ) {
$wpcf7_content_type = trim( $value );
} else {
$phpmailer->addCustomHeader( $name, $value );
}
}
if ( 'text/html' === $wpcf7_content_type ) {
$phpmailer->msgHTML( $phpmailer->Body );
} elseif ( 'text/plain' === $wpcf7_content_type ) {
$phpmailer->AltBody = '';
}
}
/**
* Class that represents a single-line text including mail-tags.
*/
class WPCF7_MailTaggedText {
private $html = false;
private $callback = null;
private $content = '';
private $replaced_tags = array();
/**
* The constructor method.
*/
public function __construct( $content, $args = '' ) {
$args = wp_parse_args( $args, array(
'html' => false,
'callback' => null,
) );
$this->html = (bool) $args['html'];
if ( null !== $args['callback']
and is_callable( $args['callback'] ) ) {
$this->callback = $args['callback'];
} elseif ( $this->html ) {
$this->callback = array( $this, 'replace_tags_callback_html' );
} else {
$this->callback = array( $this, 'replace_tags_callback' );
}
$this->content = $content;
}
/**
* Retrieves mail-tags that have been replaced by this instance.
*
* @return array List of mail-tags replaced.
*/
public function get_replaced_tags() {
return $this->replaced_tags;
}
/**
* Replaces mail-tags based on regexp.
*/
public function replace_tags() {
$regex = '/(\[?)\[[\t ]*'
. '([a-zA-Z_][0-9a-zA-Z:._-]*)' // [2] = name
. '((?:[\t ]+"[^"]*"|[\t ]+\'[^\']*\')*)' // [3] = values
. '[\t ]*\](\]?)/';
return preg_replace_callback( $regex, $this->callback, $this->content );
}
/**
* Callback function for replacement. For HTML message body.
*/
private function replace_tags_callback_html( $matches ) {
return $this->replace_tags_callback( $matches, true );
}
/**
* Callback function for replacement.
*/
private function replace_tags_callback( $matches, $html = false ) {
// allow [[foo]] syntax for escaping a tag
if ( $matches[1] == '['
and $matches[4] == ']' ) {
return substr( $matches[0], 1, -1 );
}
$tag = $matches[0];
$tagname = $matches[2];
$values = $matches[3];
$mail_tag = new WPCF7_MailTag( $tag, $tagname, $values );
$field_name = $mail_tag->field_name();
$submission = WPCF7_Submission::get_instance();
$submitted = $submission
? $submission->get_posted_data( $field_name )
: null;
if ( $mail_tag->get_option( 'do_not_heat' ) ) {
$submitted = wp_unslash( $_POST[$field_name] ?? '' );
}
$replaced = $submitted;
if ( null !== $replaced ) {
if ( $format = $mail_tag->get_option( 'format' ) ) {
$replaced = $this->format( $replaced, $format );
}
$separator = ( 'body' === WPCF7_Mail::get_current_component_name() )
? wp_get_list_item_separator()
: ', ';
$replaced = wpcf7_flat_join( $replaced, array(
'separator' => $separator,
) );
if ( $html ) {
$replaced = esc_html( $replaced );
$replaced = wptexturize( $replaced );
}
}
if ( $form_tag = $mail_tag->corresponding_form_tag() ) {
$type = $form_tag->type;
$replaced = apply_filters(
"wpcf7_mail_tag_replaced_{$type}", $replaced,
$submitted, $html, $mail_tag
);
}
$replaced = apply_filters(
'wpcf7_mail_tag_replaced', $replaced,
$submitted, $html, $mail_tag
);
if ( null !== $replaced ) {
$replaced = trim( $replaced );
$this->replaced_tags[$tag] = $replaced;
return $replaced;
}
$special = apply_filters( 'wpcf7_special_mail_tags', null,
$mail_tag->tag_name(), $html, $mail_tag
);
if ( null !== $special ) {
$this->replaced_tags[$tag] = $special;
return $special;
}
return $tag;
}
/**
* Formats string based on the formatting option in the form-tag.
*/
public function format( $original, $format ) {
$original = (array) $original;
foreach ( $original as $key => $value ) {
if ( preg_match( '/^[0-9]{4}-[0-9]{2}-[0-9]{2}$/', $value ) ) {
$datetime = date_create( $value, wp_timezone() );
if ( false !== $datetime ) {
$original[$key] = wp_date( $format, $datetime->getTimestamp() );
}
}
}
return $original;
}
}