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praiadeseselle/wire/core/WireMail.php

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<?php namespace ProcessWire;
/**
* ProcessWire WireMail
*
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* ProcessWire 3.x, Copyright 2022 by Ryan Cramer
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* https://processwire.com
*
* #pw-summary A module type that handles sending of email in ProcessWire
* #pw-var $m
* #pw-body =
*
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* Below are 2 different ways you can get a new instance of WireMail.
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* ~~~~~
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* $m = $mail->new(); // option A: use $mail API variable
* $m = wireMail(); // option B: use wireMail() function
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* ~~~~~
* Once you have an instance of WireMail (`$m`), you can use it to send email like in these examples below.
* ~~~~~
* // chained (fluent) method call usage
* $m->to('user@domain.com')
* ->from('you@company.com')
* ->subject('Message Subject')
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* ->body('Optional message body in plain text')
* ->bodyHTML('<html><body><p>Optional message body in HTML</p></body></html>')
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* ->send();
*
* // separate method call usage
* $m->to('user@domain.com'); // specify CSV string or array for multiple addresses
* $m->from('you@company.com');
* $m->subject('Message Subject');
* $m->body('Message Body');
* $m->send();
*
* // optionally specify “from” or “to” names as 2nd argument
* $m->to('user@domain.com', 'John Smith');
* $m->from('you@company.com', 'Mary Jane');
*
* // other methods or properties you might set (or get)
* $m->fromName('Mary Jane');
* $m->toName('John Smith');
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* $m->replyTo('somebody@somewhere.com');
* $m->replyToName('Joe Somebody');
* $m->attachment('/path/to/file.ext');
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* $m->header('X-Mailer', 'ProcessWire');
* $m->param('-f you@company.com'); // PHP mail() param (envelope from example)
*
* // note that the send() function always returns the quantity of messages sent
* $numSent = $m->send();
* ~~~~~
* #pw-body
*
* @method int send() Send email.
* @method string htmlToText($html) Convert HTML email body to TEXT email body.
* @method string sanitizeHeaderName($name) #pw-internal
* @method string sanitizeHeaderValue($value) #pw-internal
*
* @property array $to To email address.
* @property array $toName Optional person’s name to accompany “to” email address
* @property string $from From email address.
* @property string $fromName Optional person’s name to accompany “from” email address.
* @property string $replyTo Reply-to email address (where supported). #pw-advanced
* @property string $replyToName Optional person’s name to accompany “reply-to” email address. #pw-advanced
* @property string $subject Subject line of email.
* @property string $body Plain text body of email.
* @property string $bodyHTML HTML body of email.
* @property array $header Associative array of additional headers.
* @property array $headers Alias of $header
* @property array $param Associative array of aditional params (likely not applicable to most WireMail modules).
* @property array $attachments Array of file attachments (if populated and where supported) #pw-advanced
* @property string $newline Newline character, populated only if different from CRLF. #pw-advanced
*
*
*/
class WireMail extends WireData implements WireMailInterface {
/**
* Mail properties
*
*/
protected $mail = array(
'to' => array(), // to addresses - associative: both key and value are email (to prevent dups)
'toName' => array(), // to names - associative: indexed by 'to' email address, may be blank/null for any email
'from' => '',
'fromName' => '',
'replyTo' => '',
'replyToName' => '',
'subject' => '',
'body' => '',
'bodyHTML' => '',
'header' => array(),
'param' => array(),
'attachments' => array(),
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);
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/**
* Construct
*
*/
public function __construct() {
$this->mail['header']['X-Mailer'] = "ProcessWire/" . $this->className();
parent::__construct();
}
/**
* Get property
*
* @param string $key
* @return mixed|null
*
*/
public function get($key) {
if($key === 'headers') $key = 'header';
if(array_key_exists($key, $this->mail)) return $this->mail[$key];
return parent::get($key);
}
/**
* Set property
*
* @param string $key
* @param mixed $value
*
* @return $this|WireData
*
*/
public function set($key, $value) {
if($key === 'headers' || $key === 'header') {
if(is_array($value)) $this->headers($value);
} else if(array_key_exists($key, $this->mail)) {
$this->$key($value); // function call
} else {
parent::set($key, $value);
}
return $this;
}
public function __get($key) { return $this->get($key); }
public function __set($key, $value) { return $this->set($key, $value); }
/**
* Sanitize an email address or throw WireException if invalid or in blacklist
*
* @param string $email
* @return string
* @throws WireException
*
*/
protected function sanitizeEmail($email) {
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$email = (string) $email;
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if(!strlen($email)) return '';
$email = strtolower(trim($email));
if(strpos($email, ':') && preg_match('/^(.+):\d+$/', $email, $matches)) {
// sending email in particular might sometimes be auto-generated from hostname
// so remove trailing port, i.e. ':8888', if present since it will not validate
$email = $matches[1];
}
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$sanitizer = $this->wire()->sanitizer;
$clean = $sanitizer->email($email);
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if($email !== $clean) {
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throw new WireException("Invalid email address: " . $sanitizer->entities($email));
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}
/** @var WireMailTools $mail */
$mail = $this->wire('mail');
if($mail && $mail->isBlacklistEmail($email)) {
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throw new WireException("Email address not allowed: " . $sanitizer->entities($email));
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}
return $clean;
}
/**
* Sanitize and normalize a header name
*
* @param string $name
* @return string
* @since 3.0.132
*
*/
protected function ___sanitizeHeaderName($name) {
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$sanitizer = $this->wire()->sanitizer;
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$name = $sanitizer->emailHeader($name, true);
// ensure consistent capitalization for header names
$name = ucwords(str_replace('-', ' ', $name));
$name = str_replace(' ', '-', $name);
return $name;
}
/**
* Sanitize an email header header value
*
* @param string $value
* @return string
* @since 3.0.132
*
*/
protected function ___sanitizeHeaderValue($value) {
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return $this->wire()->sanitizer->emailHeader($value);
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}
/**
* Alias of sanitizeHeaderValue() method for backwards compatibility
*
* #pw-internal
*
* @param string $header
* @return string
*
*/
protected function sanitizeHeader($header) {
return $this->sanitizeHeaderValue($header);
}
/**
* Given an email string like "User <user@example.com>" extract and return email and username separately
*
* @param string $email
* @return array() Index 0 contains email, index 1 contains username or blank if not set
*
*/
protected function extractEmailAndName($email) {
$name = '';
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$email = (string) $email;
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if(strpos($email, '<') !== false && strpos($email, '>') !== false) {
// email has separate from name and email
if(preg_match('/^(.*?)<([^>]+)>.*$/', $email, $matches)) {
$name = $this->sanitizeHeaderValue($matches[1]);
$email = $matches[2];
}
}
$email = $this->sanitizeEmail($email);
return array($email, $name);
}
/**
* Given an email and name, bundle it to an RFC 2822 string
*
* If name is blank, then just the email will be returned
*
* @param string $email
* @param string $name
* @return string
*
*/
protected function bundleEmailAndName($email, $name) {
$email = $this->sanitizeEmail($email);
if(!strlen($name)) return $email;
$name = $this->sanitizeHeaderValue($name);
$delim = '';
if(strpos($name, ',') !== false) {
// name contains a comma, so quote the value
$name = str_replace('"', '', $name); // remove existing quotes
$delim = '"'; // add quotes
}
// Encode the name part as quoted printable according to rfc2047
return $delim . $this->quotedPrintableString($name) . $delim . " <$email>";
}
/**
* Set the email to address
*
* Each added email addresses appends to any addresses already supplied, unless
* you specify NULL as the email address, in which case it clears them all.
*
* @param string|array|null $email Specify any ONE of the following:
* - Single email address or "User Name <user@example.com>" string.
* - CSV string of #1.
* - Non-associative array of #1.
* - Associative array of (email => name)
* - NULL (default value, to clear out any previously set values)
* @param string $name Optionally provide a TO name, applicable
* only when specifying #1 (single email) for the first argument.
* @return $this
* @throws WireException if any provided emails were invalid or in blacklist
*
*/
public function to($email = null, $name = null) {
if(is_null($email)) {
// clear existing values
$this->mail['to'] = array();
$this->mail['toName'] = array();
return $this;
}
$emails = is_array($email) ? $email : explode(',', $email);
foreach($emails as $key => $value) {
$toName = '';
if(is_string($key)) {
// associative array
// email provided as $key, and $toName as value
$toEmail = $key;
$toName = $value;
} else if(strpos($value, '<') !== false && strpos($value, '>') !== false) {
// toName supplied as: "User Name <user@example.com"
list($toEmail, $toName) = $this->extractEmailAndName($value);
} else {
// just an email address, possibly with name as a function arg
$toEmail = $value;
}
if(empty($toName)) $toName = $name; // use function arg if not overwritten
$toEmail = $this->sanitizeEmail($toEmail);
if(strlen($toEmail)) {
$this->mail['to'][$toEmail] = $toEmail;
$this->mail['toName'][$toEmail] = $this->sanitizeHeaderValue($toName);
}
}
return $this;
}
/**
* Set the 'to' name
*
* It is preferable to do this with the to() method, but this is provided to ensure that
* all properties can be set with direct access, i.e. $mailer->toName = 'User Name';
*
* This sets the 'to name' for whatever the last added 'to' email address was.
*
* @param string $name The 'to' name
* @return $this
* @throws WireException if you attempt to set a toName before a to email.
*
*/
public function toName($name) {
$emails = $this->mail['to'];
if(!count($emails)) throw new WireException("Please set a 'to' address before setting a name.");
$email = end($emails);
$this->mail['toName'][$email] = $this->sanitizeHeaderValue($name);
return $this;
}
/**
* Set the email 'from' address and optionally name
*
* @param string $email Must be a single email address or "User Name <user@example.com>" string.
* @param string|null An optional FROM name (same as setting/calling fromName)
* @return $this
* @throws WireException if provided email was invalid or in blacklist
*
*/
public function from($email, $name = null) {
if(is_null($name)) {
list($email, $name) = $this->extractEmailAndName($email);
} else {
$email = $this->sanitizeEmail($email);
}
if($name) $this->fromName($name);
$this->mail['from'] = $email;
return $this;
}
/**
* Set the 'from' name
*
* It is preferable to do this with the from() method, but this is provided to ensure that
* all properties can be set with direct access, i.e. $mailer->fromName = 'User Name';
*
* @param string $name The 'from' name
* @return $this
*
*/
public function fromName($name) {
$this->mail['fromName'] = $this->sanitizeHeaderValue($name);
return $this;
}
/**
* Set the 'reply-to' email address and optionally name (where supported)
*
* @param string $email Must be a single email address or "User Name <user@example.com>" string.
* @param string|null An optional Reply-To name (same as setting/calling replyToName method)
* @return $this
* @throws WireException if provided email was invalid or in blacklist
*
*/
public function replyTo($email, $name = null) {
if(is_null($name)) {
list($email, $name) = $this->extractEmailAndName($email);
} else {
$email = $this->sanitizeEmail($email);
}
if($name) $this->mail['replyToName'] = $this->sanitizeHeaderValue($name);
$this->mail['replyTo'] = $email;
if(empty($name) && !empty($this->mail['replyToName'])) $name = $this->mail['replyToName'];
if(strlen($name)) $email = $this->bundleEmailAndName($email, $name);
$this->header('Reply-To', $email);
return $this;
}
/**
* Set the 'reply-to' name (where supported)
*
* @param string $name
* @return $this
*
*/
public function replyToName($name) {
if(strlen($this->mail['replyTo'])) return $this->replyTo($this->mail['replyTo'], $name);
$this->mail['replyToName'] = $this->sanitizeHeaderValue($name);
return $this;
}
/**
* Set the email subject
*
* @param string $subject Email subject text
* @return $this
*
*/
public function subject($subject) {
$this->mail['subject'] = $this->sanitizeHeaderValue($subject);
return $this;
}
/**
* Set the email message body (text only)
*
* ~~~~~
* $m = wireMail();
* $m->body('Hello world');
* ~~~~~
*
* @param string $body Email body in text only
* @return $this
*
*/
public function body($body) {
$this->mail['body'] = $body;
return $this;
}
/**
* Set the email message body (HTML only)
*
* This should be the text from an entire HTML document, not just an element.
*
* ~~~~~
* $m = wireMail();
* $m->bodyHTML('<html><body><h1>Hello world</h1></body></html>');
* ~~~~~
*
* @param string $body Email body in HTML
* @return $this
*
*/
public function bodyHTML($body) {
$this->mail['bodyHTML'] = $body;
return $this;
}
/**
* Set any email header
*
* - Multiple calls will append existing headers.
* - To remove an existing header, specify NULL as the value.
*
* #pw-advanced
*
* @param string|array $key Header name
* @param string $value Header value or specify null to unset
* @return $this
*
*/
public function header($key, $value) {
if(is_null($value)) {
if(is_array($key)) {
$this->headers($key);
} else {
$key = $this->sanitizeHeaderName($key);
unset($this->mail['header'][$key]);
}
} else {
$key = $this->sanitizeHeaderName($key);
$value = $this->sanitizeHeaderValue($value);
if(strlen($key)) $this->mail['header'][$key] = $value;
}
return $this;
}
/**
* Set multiple email headers using associative array
*
* @param array $headers
* @return $this
*
*/
public function headers(array $headers) {
foreach($headers as $key => $value) {
$this->header($key, $value);
}
return $this;
}
/**
* Set any email param
*
* See `$additional_parameters` at <http://www.php.net/manual/en/function.mail.php>
*
* - Multiple calls will append existing params.
* - To remove an existing param, specify NULL as the value.
*
* This function may only be applicable if you don't have other WireMail modules
* installed as email params are only used by PHP's `mail()` function.
*
* #pw-advanced
*
* @param string $value
* @return $this
*
*/
public function param($value) {
if(is_null($value)) {
$this->mail['param'] = array();
} else {
$this->mail['param'][] = $value;
}
return $this;
}
/**
* Add a file to be attached to the email
*
* ~~~~~~
* $m = wireMail();
* $m->to('user@domain.com')->from('hello@world.com');
* $m->subject('Test attachment');
* $m->body('This is just a test of a file attachment');
* $m->attachment('/path/to/file.jpg');
* $m->send();
* ~~~~~~
*
* #pw-advanced
*
* - Multiple calls will append attachments.
* - To remove the supplied attachments, specify NULL as the value.
* - Attachments may or may not be supported by 3rd party WireMail modules.
*
* @param string $value Full path and filename of file attachment
* @param string $filename Optional different basename for file as it appears in the mail
* @return $this
*
*/
public function attachment($value, $filename = '') {
if(is_null($value)) {
$this->mail['attachments'] = array();
} else if(is_file($value)) {
$filename = $filename ?: basename($value);
$this->mail['attachments'][$filename] = $value;
}
return $this;
}
/**
* Get the multipart boundary string for this email
*
* @param string|bool $prefix Specify optional boundary prefix or boolean true to clear any existing stored boundary
* @return string
*
*/
protected function multipartBoundary($prefix = '') {
$boundary = parent::get('_multipartBoundary');
if(empty($boundary) || $prefix === true) {
$boundary = "==Multipart_Boundary_x" . md5(time()) . "x";
parent::set('_multipartBoundary', $boundary);
}
if(is_string($prefix) && !empty($prefix)) {
$boundary = str_replace("_Boundary_x", "_Boundary_{$prefix}_x", $boundary);
}
return $boundary;
}
/**
* Send the email
*
* Call this method only after you have specified at least the `subject`, `to` and `body`.
*
* #pw-notes This is the primary method that modules extending this class would want to replace.
*
* @return int Returns a positive number (indicating number of addresses emailed) or 0 on failure.
*
*/
public function ___send() {
// prep header and body
$this->multipartBoundary(true);
$header = $this->renderMailHeader();
$body = $this->renderMailBody();
// adjust for the cases where people want to change RFC standard \r\n to just \n
$newline = parent::get('newline');
if(is_string($newline) && strlen($newline) && $newline !== "\r\n") {
$body = str_replace("\r\n", $newline, $body);
$header = str_replace("\r\n", $newline, $header);
}
// prep any additional PHP mail params
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$param = $this->wire()->config->phpMailAdditionalParameters;
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if(is_null($param)) $param = '';
foreach($this->param as $value) {
$param .= " $value";
}
// send email(s)
$numSent = 0;
$subject = $this->encodeSubject($this->subject);
foreach($this->to as $to) {
$toName = isset($this->mail['toName'][$to]) ? $this->mail['toName'][$to] : '';
if($toName) $to = $this->bundleEmailAndName($to, $toName); // bundle to "User Name <user@example.com>"
if($param) {
if(@mail($to, $subject, $body, $header, $param)) $numSent++;
} else {
if(@mail($to, $subject, $body, $header)) $numSent++;
}
}
return $numSent;
}
/**
* Render email header string
*
* @return string
*
*/
protected function renderMailHeader() {
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$config = $this->wire()->config;
$settings = $config->wireMail;
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$from = $this->from;
if(!strlen($from) && !empty($settings['from'])) $from = $settings['from'];
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if(!strlen($from)) $from = $config->adminEmail;
if(!strlen($from)) $from = 'processwire@' . $config->httpHost;
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$header = "From: " . ($this->fromName ? $this->bundleEmailAndName($from, $this->fromName) : $from);
foreach($this->header as $key => $value) {
$header .= "\r\n$key: $value";
}
$boundary = $this->multipartBoundary();
$header = trim($this->strReplace($header, $boundary));
if($this->bodyHTML || count($this->attachments)) {
$contentType = count($this->attachments) ? 'multipart/mixed' : 'multipart/alternative';
$header .=
"\r\nMIME-Version: 1.0" .
"\r\nContent-Type: $contentType;\r\n boundary=\"$boundary\"";
} else {
$header .=
"\r\nContent-Type: text/plain; charset=UTF-8" .
"\r\nContent-Transfer-Encoding: quoted-printable";
}
return $header;
}
/**
* Render mail body
*
* @return string
*
*/
protected function renderMailBody() {
$boundary = $this->multipartBoundary();
$subboundary = $this->multipartBoundary('alt');
// don’t allow boundary to appear in visible portions of email
$text = $this->strReplace($this->body, array($boundary, $subboundary));
$html = $this->strReplace($this->bodyHTML, array($boundary, $subboundary));
// if plain text only, return now
if(empty($html) && !count($this->attachments)) return quoted_printable_encode($text);
// if only HTML provided, generate text version from HTML
if(!strlen($text) && strlen($html)) $text = $this->htmlToText($html);
$body =
"This is a multi-part message in MIME format.\r\n\r\n" .
"--$boundary\r\n";
// Plain Text
$textbody =
"Content-Type: text/plain; charset=\"utf-8\"\r\n" .
"Content-Transfer-Encoding: quoted-printable\r\n\r\n" .
quoted_printable_encode($text) . "\r\n\r\n";
if($this->bodyHTML) {
// HTML
$htmlbody =
"Content-Type: text/html; charset=\"utf-8\"\r\n" .
"Content-Transfer-Encoding: quoted-printable\r\n\r\n" .
quoted_printable_encode($html) . "\r\n\r\n";
if(count($this->attachments)) {
// file attachments
$textbody = $this->strReplace($textbody, $subboundary);
$htmlbody = $this->strReplace($htmlbody, $subboundary);
$body .=
"Content-Type: multipart/alternative;\r\n boundary=\"$subboundary\"\r\n\r\n" .
"--$subboundary\r\n" .
$textbody .
"--$subboundary\r\n" .
$htmlbody .
"--$subboundary--\r\n\r\n";
} else {
// no file attachments
$body .=
$textbody .
"--$boundary\r\n" .
$htmlbody;
}
} else {
// plain text
$body .= $textbody;
}
if(count($this->attachments)) {
$body .= $this->renderMailAttachments();
}
$body .= "--$boundary--\r\n";
return $body;
}
/**
* Render mail attachments string for placement in body
*
* @return string
*
*/
protected function renderMailAttachments() {
$body = '';
$boundary = $this->multipartBoundary();
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$sanitizer = $this->wire()->sanitizer;
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foreach($this->attachments as $filename => $file) {
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$filename = $sanitizer->text($filename, array(
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'maxLength' => 512,
'truncateTail' => false,
'stripSpace' => '-',
'stripQuotes' => true
));
if(stripos($filename, $boundary) !== false) continue;
$content = file_get_contents($file);
$content = chunk_split(base64_encode($content));
if(stripos($content, $boundary) !== false) continue;
$body .=
"--$boundary\r\n" .
"Content-Type: application/octet-stream; name=\"$filename\"\r\n" .
"Content-Transfer-Encoding: base64\r\n" .
"Content-Disposition: attachment; filename=\"$filename\"\r\n\r\n" .
"$content\r\n\r\n";
}
return $body;
}
/**
* Recursive string replacement
*
* This is better than using str_replace() because it handles cases where replacement
* results in the construction of a new $find that was not present in original $str.
* Note: this function ignores case.
*
* @param string $str
* @param string|array $find
* @param string $replace
* @return string
*
*/
protected function strReplace($str, $find, $replace = '') {
if(!is_array($find)) $find = array($find);
if(!is_string($str)) $str = (string) $str;
foreach($find as $findStr) {
if(is_array($findStr)) continue;
while(stripos($str, $findStr) !== false) {
$str = str_ireplace($findStr, $replace, $str);
}
}
return $str;
}
/**
* Convert HTML mail body to TEXT mail body
*
* @param string $html
* @return string
*
*/
protected function ___htmlToText($html) {
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$text = $this->wire()->sanitizer->getTextTools()->markupToText($html);
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$text = str_replace("\n", "\r\n", $text);
$text = $this->strReplace($text, $this->multipartBoundary());
return $text;
}
/**
* Encode a subject, use mbstring if available
*
* #pw-advanced
*
* @param string $subject
* @return string
*
*/
public function encodeSubject($subject) {
$boundary = $this->multipartBoundary();
$subject = $this->strReplace($subject, $boundary);
if(extension_loaded("mbstring")) {
// Need to pass in the header name and subtract it afterwards,
// otherwise the first line would grow too long
return substr(mb_encode_mimeheader("Subject: $subject", 'UTF-8', 'Q', "\r\n"), 9);
}
$out = array();
$isFirst = true;
$n = 0;
while(strlen($subject) > 0 && ++$n < 50) {
$part = $this->findBestEncodePart($subject, 63, $isFirst);
$out[] = $this->quotedPrintableString($part);
$subject = substr($subject, strlen($part));
$isFirst = false;
}
return implode("\r\n ", $out);
}
/**
* Tries to split the passed subject at a whitespace at or before $maxlen,
* falling back to a hard substr if none was found, and returns the
* left part.
*
* Makes sure that the quoted-printable encoded part is inside the 76 characters
* header limit (66 for first line that has the header name, minus a buffer
* of 2 characters for whitespace) given in rfc2047.
*
* @param string $input The subject to encode
* @param int $maxlen Maximum length of unencoded string, defaults to 63
* @param bool $isFirst Set to true for first line to account for the header name
* @return string
*
*/
protected function findBestEncodePart($input, $maxlen = 63, $isFirst = false) {
$maxEffLen = $maxlen - ($isFirst ? 10 : 0);
if(strlen($input) <= $maxEffLen) {
$part = $input;
} else if(strpos($input, " ") === FALSE || strrpos($input, " ") === FALSE || strpos($input, " ") > $maxEffLen) {
// Force cutting of subject since there is no whitespace to break on
$part = substr($input, $maxlen - $maxEffLen);
} else {
$searchstring = substr($input, 0, $maxEffLen);
$lastpos = strrpos($searchstring, " ");
$part = substr($input, 0, $lastpos);
}
if(strlen($this->quotedPrintableString($part)) > 74 - ($isFirst ? 10 : 0)) {
return $this->findBestEncodePart($input, $maxlen - 1, $isFirst);
}
return $part;
}
/**
* Return the text quoted-printable encoded
*
* Uses short notation for charset and encoding suitable for email headers
* as laid out in rfc2047.
*
* #pw-advanced
*
* @param string $text
* @return string
*
*/
public function quotedPrintableString($text) {
return '=?utf-8?Q?' . quoted_printable_encode($text) . '?=';
}
}
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