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<?php
namespace Laminas\Mail\Storage;
use Laminas\Mail;
use Laminas\Mail\Protocol;
use function array_key_exists;
use function array_pop;
use function array_push;
use function count;
use function in_array;
use function is_string;
use function ksort;
use function str_starts_with;
use function strrpos;
use function substr;
use const INF;
use const SORT_STRING;
class Imap extends AbstractStorage implements Folder\FolderInterface, Writable\WritableInterface
{
// TODO: with an internal cache we could optimize this class, or create an extra class with
// such optimizations. Especially the various fetch calls could be combined to one cache call
/**
* protocol handler
*
* @var null|Protocol\Imap
*/
protected $protocol;
/**
* name of current folder
*
* @var string
*/
protected $currentFolder = '';
/**
* IMAP folder delimiter character
*
* @var null|string
*/
protected $delimiter;
/**
* IMAP flags to constants translation
*
* @var array
*/
protected static $knownFlags = [
'\Passed' => Mail\Storage::FLAG_PASSED,
'\Answered' => Mail\Storage::FLAG_ANSWERED,
'\Seen' => Mail\Storage::FLAG_SEEN,
'\Unseen' => Mail\Storage::FLAG_UNSEEN,
'\Deleted' => Mail\Storage::FLAG_DELETED,
'\Draft' => Mail\Storage::FLAG_DRAFT,
'\Flagged' => Mail\Storage::FLAG_FLAGGED,
];
/**
* IMAP flags to search criteria
*
* @var array
*/
protected static $searchFlags = [
'\Recent' => 'RECENT',
'\Answered' => 'ANSWERED',
'\Seen' => 'SEEN',
'\Unseen' => 'UNSEEN',
'\Deleted' => 'DELETED',
'\Draft' => 'DRAFT',
'\Flagged' => 'FLAGGED',
];
/**
* Count messages all messages in current box
*
* @param null $flags
* @throws Exception\RuntimeException
* @throws Protocol\Exception\RuntimeException
* @return int number of messages
*/
public function countMessages($flags = null)
{
if (! $this->currentFolder) {
throw new Exception\RuntimeException('No selected folder to count');
}
if ($flags === null) {
return count($this->protocol->search(['ALL']));
}
$params = [];
foreach ((array) $flags as $flag) {
if (isset(static::$searchFlags[$flag])) {
$params[] = static::$searchFlags[$flag];
} else {
$params[] = 'KEYWORD';
$params[] = $this->protocol->escapeString($flag);
}
}
return count($this->protocol->search($params));
}
/**
* get a list of messages with number and size
*
* @param int $id number of message
* @return int|array size of given message of list with all messages as [num => size]
* @throws Protocol\Exception\RuntimeException
*/
public function getSize($id = 0)
{
if ($id) {
return $this->protocol->fetch('RFC822.SIZE', $id);
}
return $this->protocol->fetch('RFC822.SIZE', 1, INF);
}
/**
* Fetch a message
*
* @param int $id number of message
* @return Message
* @throws Protocol\Exception\RuntimeException
*/
public function getMessage($id)
{
$data = $this->protocol->fetch(['FLAGS', 'RFC822.HEADER'], $id);
$header = $data['RFC822.HEADER'];
$flags = [];
foreach ($data['FLAGS'] as $flag) {
$flags[] = static::$knownFlags[$flag] ?? $flag;
}
return new $this->messageClass(['handler' => $this, 'id' => $id, 'headers' => $header, 'flags' => $flags]);
}
/**
* Get raw header of message or part
*
* @param int $id number of message
* @param null|array|string $part path to part or null for message header
* @param int $topLines include this many lines with header (after an empty line)
* @return string raw header
* @throws Exception\RuntimeException
* @throws Protocol\Exception\RuntimeException
*/
public function getRawHeader($id, $part = null, $topLines = 0)
{
if ($part !== null) {
// TODO: implement
throw new Exception\RuntimeException('not implemented');
}
// TODO: toplines
return $this->protocol->fetch('RFC822.HEADER', $id);
}
/**
* Get raw content of message or part
*
* @param int $id number of message
* @param null|array|string $part path to part or null for message content
* @return string raw content
* @throws Protocol\Exception\RuntimeException
* @throws Exception\RuntimeException
*/
public function getRawContent($id, $part = null)
{
if ($part !== null) {
// TODO: implement
throw new Exception\RuntimeException('not implemented');
}
return $this->protocol->fetch('RFC822.TEXT', $id);
}
/**
* create instance with parameters
*
* Supported parameters are
*
* - user username
* - host hostname or ip address of IMAP server [optional, default = 'localhost']
* - password password for user 'username' [optional, default = '']
* - port port for IMAP server [optional, default = 110]
* - ssl 'SSL' or 'TLS' for secure sockets
* - folder select this folder [optional, default = 'INBOX']
*
* @param array|object|Protocol\Imap $params mail reader specific
* parameters or configured Imap protocol object
* @throws Exception\RuntimeException
* @throws Exception\InvalidArgumentException
* @throws Protocol\Exception\RuntimeException
*/
public function __construct($params)
{
$this->has['flags'] = true;
if ($params instanceof Protocol\Imap) {
$this->protocol = $params;
try {
$this->selectFolder('INBOX');
} catch (Exception\ExceptionInterface $e) {
throw new Exception\RuntimeException('cannot select INBOX, is this a valid transport?', 0, $e);
}
return;
}
$params = ParamsNormalizer::normalizeParams($params);
if (! isset($params['user'])) {
throw new Exception\InvalidArgumentException('need at least user in params');
}
$host = $params['host'] ?? 'localhost';
$password = $params['password'] ?? '';
$port = $params['port'] ?? null;
$ssl = $params['ssl'] ?? false;
$folder = $params['folder'] ?? 'INBOX';
if (null !== $port) {
$port = (int) $port;
}
if (! is_string($ssl)) {
$ssl = (bool) $ssl;
}
$this->protocol = new Protocol\Imap();
if (array_key_exists('novalidatecert', $params)) {
$this->protocol->setNoValidateCert((bool) $params['novalidatecert']);
}
$this->protocol->connect((string) $host, $port, $ssl);
if (! $this->protocol->login((string) $params['user'], (string) $password)) {
throw new Exception\RuntimeException('cannot login, user or password wrong');
}
$this->selectFolder((string) $folder);
}
/**
* Close resource for mail lib.
*
* If you need to control, when the resource is closed. Otherwise the
* destructor would call this.
*/
public function close()
{
$this->currentFolder = '';
$this->protocol->logout();
}
/**
* Keep the server busy.
*
* @throws Exception\RuntimeException
*/
public function noop()
{
if (! $this->protocol->noop()) {
throw new Exception\RuntimeException('could not do nothing');
}
}
/**
* Remove a message from server.
*
* If you're doing that from a web environment you should be careful and
* use a uniqueid as parameter if possible to identify the message.
*
* @param int $id number of message
* @throws Exception\RuntimeException
*/
public function removeMessage($id)
{
if (! $this->protocol->store([Mail\Storage::FLAG_DELETED], $id, null, '+')) {
throw new Exception\RuntimeException('cannot set deleted flag');
}
// TODO: expunge here or at close? we can handle an error here better and are more fail safe
if (! $this->protocol->expunge()) {
throw new Exception\RuntimeException('message marked as deleted, but could not expunge');
}
}
/**
* get unique id for one or all messages
*
* if storage does not support unique ids it's the same as the message
* number.
*
* @param int|null $id message number
* @return array|string message number for given message or all messages as array
* @throws Protocol\Exception\RuntimeException
*/
public function getUniqueId($id = null)
{
if ($id) {
return $this->protocol->fetch('UID', $id);
}
return $this->protocol->fetch('UID', 1, INF);
}
/**
* get a message number from a unique id
*
* I.e. if you have a webmailer that supports deleting messages you should
* use unique ids as parameter and use this method to translate it to
* message number right before calling removeMessage()
*
* @param string $id unique id
* @throws Exception\InvalidArgumentException
* @return int message number
*/
public function getNumberByUniqueId($id)
{
// TODO: use search to find number directly
$ids = $this->getUniqueId();
foreach ($ids as $k => $v) {
if ($v == $id) {
return $k;
}
}
throw new Exception\InvalidArgumentException('unique id not found');
}
/**
* get root folder or given folder
*
* @param string $rootFolder get folder structure for given folder, else root
* @throws Exception\RuntimeException
* @throws Exception\InvalidArgumentException
* @throws Protocol\Exception\RuntimeException
* @return Folder root or wanted folder
*/
public function getFolders($rootFolder = null)
{
$folders = $this->protocol->listMailbox((string) $rootFolder);
if (! $folders) {
throw new Exception\InvalidArgumentException('folder not found');
}
ksort($folders, SORT_STRING);
$root = new Folder('/', '/', false);
$stack = [null];
$folderStack = [null];
$parentFolder = $root;
$parent = '';
foreach ($folders as $globalName => $data) {
do {
if (! $parent || str_starts_with($globalName, ! is_string($parent) ? (string) $parent : $parent)) {
$pos = strrpos($globalName, (string) $data['delim']);
if ($pos === false) {
$localName = $globalName;
} else {
$localName = substr($globalName, $pos + 1);
}
$selectable = ! $data['flags'] || ! in_array('\\Noselect', $data['flags']);
array_push($stack, $parent);
$parent = $globalName . $data['delim'];
$folder = new Folder($localName, $globalName, $selectable);
$parentFolder->$localName = $folder;
array_push($folderStack, $parentFolder);
$parentFolder = $folder;
$this->delimiter = $data['delim'];
break;
} elseif ($stack) {
$parent = array_pop($stack);
$parentFolder = array_pop($folderStack);
}
} while ($stack);
if (! $stack) {
throw new Exception\RuntimeException('error while constructing folder tree');
}
}
return $root;
}
/**
* select given folder
*
* folder must be selectable!
*
* @param Folder|string $globalName global name of folder or instance for subfolder
* @throws Exception\RuntimeException
* @throws Protocol\Exception\RuntimeException
*/
public function selectFolder($globalName)
{
$this->currentFolder = (string) $globalName;
if (! $this->protocol->select($this->currentFolder)) {
$this->currentFolder = '';
throw new Exception\RuntimeException('cannot change folder, maybe it does not exist');
}
}
/**
* get Folder instance for current folder
*
* @return string instance of current folder
*/
public function getCurrentFolder()
{
return $this->currentFolder;
}
/**
* create a new folder
*
* This method also creates parent folders if necessary. Some mail storages
* may restrict, which folder may be used as parent or which chars may be
* used in the folder name
*
* @param string $name global name of folder, local name if $parentFolder
* is set
* @param string|Folder $parentFolder parent folder for new folder, else
* root folder is parent
* @throws Exception\RuntimeException
*/
public function createFolder($name, $parentFolder = null)
{
// TODO: we assume / as the hierarchy delim - need to get that from the folder class!
if ($parentFolder instanceof Folder) {
$folder = $parentFolder->getGlobalName() . '/' . $name;
} elseif ($parentFolder !== null) {
$folder = $parentFolder . '/' . $name;
} else {
$folder = $name;
}
if (! $this->protocol->create($folder)) {
throw new Exception\RuntimeException('cannot create folder');
}
}
/**
* remove a folder
*
* @param string|Folder $name name or instance of folder
* @throws Exception\RuntimeException
*/
public function removeFolder($name)
{
if ($name instanceof Folder) {
$name = $name->getGlobalName();
}
if (! $this->protocol->delete($name)) {
throw new Exception\RuntimeException('cannot delete folder');
}
}
/**
* rename and/or move folder
*
* The new name has the same restrictions as in createFolder()
*
* @param string|Folder $oldName name or instance of folder
* @param string $newName new global name of folder
* @throws Exception\RuntimeException
*/
public function renameFolder($oldName, $newName)
{
if ($oldName instanceof Folder) {
$oldName = $oldName->getGlobalName();
}
if (! $this->protocol->rename($oldName, $newName)) {
throw new Exception\RuntimeException('cannot rename folder');
}
}
/**
* append a new message to mail storage
*
* @param string $message message as string or instance of message class
* @param null|string|Folder $folder folder for new message, else current
* folder is taken
* @param null|array $flags set flags for new message, else a default set
* is used
* @throws Exception\RuntimeException
*/
public function appendMessage($message, $folder = null, $flags = null)
{
if ($folder === null) {
$folder = $this->currentFolder;
}
if ($flags === null) {
$flags = [Mail\Storage::FLAG_SEEN];
}
// TODO: handle class instances for $message
if (! $this->protocol->append($folder, $message, $flags)) {
throw new Exception\RuntimeException(
'cannot create message, please check if the folder exists and your flags'
);
}
}
/**
* copy an existing message
*
* @param int $id number of message
* @param string|Folder $folder name or instance of target folder
* @throws Exception\RuntimeException
*/
public function copyMessage($id, $folder)
{
if (! $this->protocol->copy($folder, $id)) {
throw new Exception\RuntimeException('cannot copy message, does the folder exist?');
}
}
/**
* move an existing message
*
* NOTE: IMAP has no native move command, thus it's emulated with copy and delete
*
* @param int $id number of message
* @param string|Folder $folder name or instance of target folder
* @throws Exception\RuntimeException
*/
public function moveMessage($id, $folder)
{
$this->copyMessage($id, $folder);
$this->removeMessage($id);
}
/**
* set flags for message
*
* NOTE: this method can't set the recent flag.
*
* @param int $id number of message
* @param array $flags new flags for message
* @throws Exception\RuntimeException
*/
public function setFlags($id, $flags)
{
if (! $this->protocol->store($flags, $id)) {
throw new Exception\RuntimeException(
'cannot set flags, have you tried to set the recent flag or special chars?'
);
}
}
/**
* get IMAP delimiter
*
* @return string|null
*/
public function delimiter()
{
if (! isset($this->delimiter)) {
$this->getFolders();
}
return $this->delimiter;
}
}