web-base/core/Api/MailAPI.class.php

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<?php
namespace Api {
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use Objects\ConnectionData;
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abstract class MailAPI extends Request {
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protected function getMailConfig(): ?ConnectionData {
$req = new \Api\Settings\Get($this->user);
$this->success = $req->execute(array("key" => "^mail_"));
$this->lastError = $req->getLastError();
if ($this->success) {
$settings = $req->getResult()["settings"];
if (!isset($settings["mail_enabled"]) || $settings["mail_enabled"] !== "1") {
$this->createError("Mail is not configured yet.");
return null;
}
$host = $settings["mail_host"] ?? "localhost";
$port = intval($settings["mail_port"] ?? "25");
$login = $settings["mail_username"] ?? "";
$password = $settings["mail_password"] ?? "";
$connectionData = new ConnectionData($host, $port, $login, $password);
$connectionData->setProperty("from", $settings["mail_from"] ?? "");
$connectionData->setProperty("last_sync", $settings["mail_last_sync"] ?? "");
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$connectionData->setProperty("mail_footer", $settings["mail_footer"] ?? "");
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return $connectionData;
}
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return null;
}
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}
}
namespace Api\Mail {
use Api\MailAPI;
use Api\Parameter\Parameter;
use Api\Parameter\StringType;
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use DateTimeInterface;
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use Driver\SQL\Column\Column;
use Driver\SQL\Condition\Compare;
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use Driver\SQL\Condition\CondIn;
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use Driver\SQL\Strategy\UpdateStrategy;
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use External\PHPMailer\Exception;
use External\PHPMailer\PHPMailer;
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use Objects\ConnectionData;
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use Objects\GpgKey;
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use Objects\User;
class Test extends MailAPI {
public function __construct(User $user, bool $externalCall = false) {
parent::__construct($user, $externalCall, array(
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"receiver" => new Parameter("receiver", Parameter::TYPE_EMAIL),
"gpgFingerprint" => new StringType("gpgFingerprint", 64, true, null)
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));
}
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public function _execute(): bool {
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$receiver = $this->getParam("receiver");
$req = new \Api\Mail\Send($this->user);
$this->success = $req->execute(array(
"to" => $receiver,
"subject" => "Test E-Mail",
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"body" => "Hey! If you receive this e-mail, your mail configuration seems to be working.",
"gpgFingerprint" => $this->getParam("gpgFingerprint"),
"asnyc" => false
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));
$this->lastError = $req->getLastError();
return $this->success;
}
}
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// TODO: expired gpg keys?
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class Send extends MailAPI {
public function __construct($user, $externalCall = false) {
parent::__construct($user, $externalCall, array(
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'to' => new Parameter('to', Parameter::TYPE_EMAIL, true, null),
'subject' => new StringType('subject', -1),
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'body' => new StringType('body', -1),
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'replyTo' => new Parameter('replyTo', Parameter::TYPE_EMAIL, true, null),
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'replyName' => new StringType('replyName', 32, true, ""),
"gpgFingerprint" => new StringType("gpgFingerprint", 64, true, null),
'async' => new Parameter("async", Parameter::TYPE_BOOLEAN, true, true)
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));
$this->isPublic = false;
}
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public function _execute(): bool {
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$mailConfig = $this->getMailConfig();
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if (!$this->success || $mailConfig === null) {
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return false;
}
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$fromMail = $mailConfig->getProperty('from');
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$mailFooter = $mailConfig->getProperty('mail_footer');
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$toMail = $this->getParam('to') ?? $fromMail;
$subject = $this->getParam('subject');
$replyTo = $this->getParam('replyTo');
$replyName = $this->getParam('replyName');
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$body = $this->getParam('body');
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$gpgFingerprint = $this->getParam("gpgFingerprint");
if ($this->getParam("async")) {
$sql = $this->user->getSQL();
$this->success = $sql->insert("MailQueue", ["from", "to", "subject", "body",
"replyTo", "replyName", "gpgFingerprint"])
->addRow($fromMail, $toMail, $subject, $body, $replyTo, $replyName, $gpgFingerprint)
->execute() !== false;
$this->lastError = $sql->getLastError();
return $this->success;
}
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if (stripos($body, "<body") === false) {
$body = "<body>$body</body>";
}
if (stripos($body, "<html") === false) {
$body = "<html>$body</html>";
}
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if (!empty($mailFooter)) {
$email_signature = realpath(WEBROOT . DIRECTORY_SEPARATOR . $mailFooter);
if (is_file($email_signature)) {
$email_signature = file_get_contents($email_signature);
$body .= $email_signature;
}
}
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try {
$mail = new PHPMailer;
$mail->IsSMTP();
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$mail->setFrom($fromMail);
$mail->addAddress($toMail);
if ($replyTo) {
$mail->addReplyTo($replyTo, $replyName);
}
$mail->Subject = $subject;
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$mail->SMTPDebug = 0;
$mail->Host = $mailConfig->getHost();
$mail->Port = $mailConfig->getPort();
$mail->SMTPAuth = true;
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$mail->Timeout = 15;
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$mail->Username = $mailConfig->getLogin();
$mail->Password = $mailConfig->getPassword();
$mail->SMTPSecure = 'tls';
$mail->CharSet = 'UTF-8';
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if ($gpgFingerprint) {
$encryptedHeaders = implode("\r\n", [
"Date: " . (new \DateTime())->format(DateTimeInterface::RFC2822),
"Content-Type: text/html",
"Content-Transfer-Encoding: quoted-printable"
]);
$mimeBody = $encryptedHeaders . "\r\n\r\n" . quoted_printable_encode($body);
$res = GpgKey::encrypt($mimeBody, $gpgFingerprint);
if ($res["success"]) {
$encryptedBody = $res["data"];
$mail->AltBody = '';
$mail->Body = '';
$mail->AllowEmpty = true;
$mail->ContentType = PHPMailer::CONTENT_TYPE_MULTIPART_ENCRYPTED;
$mail->addStringAttachment("Version: 1", null, PHPMailer::ENCODING_BASE64, "application/pgp-encrypted", "");
$mail->addStringAttachment($encryptedBody, "encrypted.asc", PHPMailer::ENCODING_7BIT, "application/octet-stream", "");
} else {
return $this->createError($res["error"]);
}
} else {
$mail->msgHTML($body);
$mail->AltBody = strip_tags($body);
}
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$this->success = @$mail->Send();
if (!$this->success) {
$this->lastError = "Error sending Mail: $mail->ErrorInfo";
error_log("sendMail() failed: $mail->ErrorInfo");
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} else {
$this->result["messageId"] = $mail->getLastMessageID();
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}
} catch (Exception $e) {
$this->success = false;
$this->lastError = "Error sending Mail: $e";
}
return $this->success;
}
}
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// TODO: IMAP mail settings :(
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// TODO: attachments
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class Sync extends MailAPI {
public function __construct(User $user, bool $externalCall = false) {
parent::__construct($user, $externalCall, array());
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$this->loginRequired = true;
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}
private function fetchMessageIds() {
$sql = $this->user->getSQL();
$res = $sql->select("uid", "messageId")
->from("ContactRequest")
->where(new Compare("messageId", NULL, "!="))
->execute();
$this->success = ($res !== false);
$this->lastError = $sql->getLastError();
if (!$this->success) {
return false;
}
$messageIds = [];
foreach ($res as $row) {
$messageIds[$row["messageId"]] = $row["uid"];
}
return $messageIds;
}
private function findContactRequest(array &$messageIds, array &$references): ?int {
foreach ($references as &$ref) {
if (isset($messageIds[$ref])) {
return $messageIds[$ref];
}
}
return null;
}
private function parseBody(string $body): string {
// TODO clean this up
return trim($body);
}
private function insertMessages($messages): bool {
$sql = $this->user->getSQL();
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$query = $sql->insert("ContactMessage", ["request_id", "user_id", "message", "messageId", "created_at"])
->onDuplicateKeyStrategy(new UpdateStrategy(["messageId"], ["message" => new Column("message")]));
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$entityIds = [];
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foreach ($messages as $message) {
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$requestId = $message["requestId"];
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$query->addRow(
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$requestId,
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$sql->select("uid")->from("User")->where(new Compare("email", $message["from"]))->limit(1),
$message["body"],
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$message["messageId"],
(new \DateTime())->setTimeStamp($message["timestamp"]),
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);
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if (!in_array($requestId, $entityIds)) {
$entityIds[] = $requestId;
}
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}
$this->success = $query->execute();
$this->lastError = $sql->getLastError();
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// Update entity log
if ($this->success && count($entityIds) > 0) {
$sql->update("EntityLog")
->set("modified", $sql->now())
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->where(new CondIn(new Column("entityId"), $entityIds))
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->execute();
}
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return $this->success;
}
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private function parseDate($date) {
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$formats = [null, "D M d Y H:i:s e+", "D, j M Y H:i:s e+"];
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foreach ($formats as $format) {
try {
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$dateObj = ($format === null ? new \DateTime($date) : \DateTime::createFromFormat($format, $date));
if ($dateObj) {
return $dateObj;
}
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} catch (\Exception $exception) {
}
}
return $this->createError("Could not parse date: $date");
}
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private function getReference(ConnectionData $mailConfig): string {
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$port = 993;
$host = str_replace("smtp", "imap", $mailConfig->getHost());
$flags = ["/ssl"];
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return '{' . $host . ':' . $port . implode("", $flags) . '}';
}
private function connect(ConnectionData $mailConfig) {
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$username = $mailConfig->getLogin();
$password = $mailConfig->getPassword();
$ref = $this->getReference($mailConfig);
$mbox = @imap_open($ref, $username, $password, OP_READONLY);
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if (!$mbox) {
return $this->createError("Can't connect to mail server via IMAP: " . imap_last_error());
}
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return $mbox;
}
private function listFolders(ConnectionData $mailConfig, $mbox) {
$boxes = @imap_list($mbox, $this->getReference($mailConfig), '*');
if (!$boxes) {
return $this->createError("Error listing imap folders: " . imap_last_error());
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}
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return $boxes;
}
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private function getSenderAddress($header): string {
if (property_exists($header, "reply_to") && count($header->reply_to) > 0) {
$mailBox = $header->reply_to[0]->mailbox;
$host = $header->reply_to[0]->host;
} else if (property_exists($header, "from") && count($header->from) > 0) {
$mailBox = $header->from[0]->mailbox;
$host = $header->from[0]->host;
} else {
return "unknown_addr";
}
return "$mailBox@$host";
}
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private function runSearch($mbox, string $searchCriteria, ?\DateTime $lastSyncDateTime, array $messageIds, array &$messages) {
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$result = @imap_search($mbox, $searchCriteria);
if ($result === false) {
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$err = imap_last_error(); // might return false, if not messages were found, so we can just abort without throwing an error
return empty($err) ? true : $this->createError("Could not run search: $err");
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}
foreach ($result as $msgNo) {
$header = imap_headerinfo($mbox, $msgNo);
$date = $this->parseDate($header->date);
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if ($date === false) {
return false;
}
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if ($lastSyncDateTime === null || \datetimeDiff($lastSyncDateTime, $date) > 0) {
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$references = property_exists($header, "references") ?
explode(" ", $header->references) : [];
$requestId = $this->findContactRequest($messageIds, $references);
if ($requestId) {
$messageId = $header->message_id;
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$senderAddress = $this->getSenderAddress($header);
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$structure = imap_fetchstructure($mbox, $msgNo);
$attachments = [];
$hasAttachments = (property_exists($structure, "parts"));
if ($hasAttachments) {
foreach ($structure->parts as $part) {
$disposition = (property_exists($part, "disposition") ? $part->disposition : null);
if ($disposition === "attachment") {
$fileName = array_filter($part->dparameters, function ($param) {
return $param->attribute === "filename";
});
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if (count($fileName) > 0) {
$attachments[] = $fileName[0]->value;
}
}
}
}
$body = imap_fetchbody($mbox, $msgNo, "1");
$body = $this->parseBody($body);
if (!isset($messageId[$messageId])) {
$messages[$messageId] = [
"messageId" => $messageId,
"requestId" => $requestId,
"timestamp" => $date->getTimestamp(),
"from" => $senderAddress,
"body" => $body,
"attachments" => $attachments
];
}
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}
}
}
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return true;
}
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public function _execute(): bool {
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if (!function_exists("imap_open")) {
return $this->createError("IMAP is not enabled. Enable it inside the php config. For more information visit: https://www.php.net/manual/en/imap.setup.php");
}
$messageIds = $this->fetchMessageIds();
if ($messageIds === false) {
return false;
} else if (count($messageIds) === 0) {
// nothing to sync here
return true;
}
$mailConfig = $this->getMailConfig();
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if (!$this->success || $mailConfig === null) {
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return false;
}
$mbox = $this->connect($mailConfig);
if ($mbox === false) {
return false;
}
$boxes = $this->listFolders($mailConfig, $mbox);
if ($boxes === false) {
return false;
}
$now = (new \DateTime())->getTimestamp();
$lastSync = intval($mailConfig->getProperty("last_sync", "0"));
if ($lastSync > 0) {
$lastSyncDateTime = (new \DateTime())->setTimeStamp($lastSync);
$dateStr = $lastSyncDateTime->format("d-M-Y");
$searchCriteria = "SINCE \"$dateStr\"";
} else {
$lastSyncDateTime = null;
$searchCriteria = "ALL";
}
$messages = [];
foreach ($boxes as $box) {
imap_reopen($mbox, $box);
if (!$this->runSearch($mbox, $searchCriteria, $lastSyncDateTime, $messageIds, $messages)) {
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return false;
}
}
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@imap_close($mbox);
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if (!empty($messages) && !$this->insertMessages($messages)) {
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return false;
}
$req = new \Api\Settings\Set($this->user);
$this->success = $req->execute(array("settings" => array("mail_last_sync" => "$now")));
$this->lastError = $req->getLastError();
return $this->success;
}
}
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class SendQueue extends MailAPI {
public function __construct(User $user, bool $externalCall = false) {
parent::__construct($user, $externalCall, [
"debug" => new Parameter("debug", Parameter::TYPE_BOOLEAN, true, false)
]);
$this->isPublic = false;
}
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public function _execute(): bool {
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$debug = $this->getParam("debug");
$startTime = time();
if ($debug) {
echo "Start of processing mail queue at $startTime" . PHP_EOL;
}
$sql = $this->user->getSQL();
$res = $sql->select("uid", "from", "to", "subject", "body",
"replyTo", "replyName", "gpgFingerprint", "retryCount")
->from("MailQueue")
->where(new Compare("retryCount", 0, ">"))
->where(new Compare("status", "waiting"))
->where(new Compare("nextTry", $sql->now(), "<="))
->execute();
$this->success = ($res !== false);
$this->lastError = $sql->getLastError();
if ($this->success && is_array($res)) {
if ($debug) {
echo "Found " . count($res) . " mails to send" . PHP_EOL;
}
$successfulMails = [];
foreach ($res as $row) {
if (time() - $startTime >= 45) {
$this->lastError = "Not able to process whole mail queue within 45 seconds, will continue on next time";
break;
}
$to = $row["to"];
$subject = $row["subject"];
if ($debug) {
echo "Sending subject=$subject to=$to" . PHP_EOL;
}
$mailId = intval($row["uid"]);
$retryCount = intval($row["retryCount"]);
$req = new Send($this->user);
$args = [
"to" => $to,
"subject" => $subject,
"body" => $row["body"],
"replyTo" => $row["replyTo"],
"replyName" => $row["replyName"],
"gpgFingerprint" => $row["gpgFingerprint"],
"async" => false
];
$success = $req->execute($args);
$error = $req->getLastError();
if (!$success) {
$delay = [0, 720, 360, 60, 30, 1];
$minutes = $delay[max(0, min(count($delay) - 1, $retryCount))];
$nextTry = (new \DateTime())->modify("+$minutes minute");
$sql->update("MailQueue")
->set("retryCount", $retryCount - 1)
->set("status", "error")
->set("errorMessage", $error)
->set("nextTry", $nextTry)
->where(new Compare("uid", $mailId))
->execute();
} else {
$successfulMails[] = $mailId;
}
}
$this->success = count($successfulMails) === count($res);
if (!empty($successfulMails)) {
$res = $sql->update("MailQueue")
->set("status", "success")
->where(new CondIn(new Column("uid"), $successfulMails))
->execute();
$this->success = $res !== false;
$this->lastError = $sql->getLastError();
}
}
return $this->success;
}
}
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}