diff options
Diffstat (limited to 'program/lib/Roundcube/rcube_imap_generic.php')
| -rw-r--r-- | program/lib/Roundcube/rcube_imap_generic.php | 3694 |
1 files changed, 3694 insertions, 0 deletions
diff --git a/program/lib/Roundcube/rcube_imap_generic.php b/program/lib/Roundcube/rcube_imap_generic.php new file mode 100644 index 000000000..a0a8f3b77 --- /dev/null +++ b/program/lib/Roundcube/rcube_imap_generic.php @@ -0,0 +1,3694 @@ +<?php + +/** + +-----------------------------------------------------------------------+ + | program/include/rcube_imap_generic.php | + | | + | This file is part of the Roundcube Webmail client | + | Copyright (C) 2005-2012, The Roundcube Dev Team | + | Copyright (C) 2011-2012, Kolab Systems AG | + | | + | Licensed under the GNU General Public License version 3 or | + | any later version with exceptions for skins & plugins. | + | See the README file for a full license statement. | + | | + | PURPOSE: | + | Provide alternative IMAP library that doesn't rely on the standard | + | C-Client based version. This allows to function regardless | + | of whether or not the PHP build it's running on has IMAP | + | functionality built-in. | + | | + | Based on Iloha IMAP Library. See http://ilohamail.org/ for details | + | | + +-----------------------------------------------------------------------+ + | Author: Aleksander Machniak <alec@alec.pl> | + | Author: Ryo Chijiiwa <Ryo@IlohaMail.org> | + +-----------------------------------------------------------------------+ +*/ + + +/** + * PHP based wrapper class to connect to an IMAP server + * + * @package Framework + * @subpackage Storage + */ +class rcube_imap_generic +{ + public $error; + public $errornum; + public $result; + public $resultcode; + public $selected; + public $data = array(); + public $flags = array( + 'SEEN' => '\\Seen', + 'DELETED' => '\\Deleted', + 'ANSWERED' => '\\Answered', + 'DRAFT' => '\\Draft', + 'FLAGGED' => '\\Flagged', + 'FORWARDED' => '$Forwarded', + 'MDNSENT' => '$MDNSent', + '*' => '\\*', + ); + + private $fp; + private $host; + private $logged = false; + private $capability = array(); + private $capability_readed = false; + private $prefs; + private $cmd_tag; + private $cmd_num = 0; + private $resourceid; + private $_debug = false; + private $_debug_handler = false; + + const ERROR_OK = 0; + const ERROR_NO = -1; + const ERROR_BAD = -2; + const ERROR_BYE = -3; + const ERROR_UNKNOWN = -4; + const ERROR_COMMAND = -5; + const ERROR_READONLY = -6; + + const COMMAND_NORESPONSE = 1; + const COMMAND_CAPABILITY = 2; + const COMMAND_LASTLINE = 4; + + /** + * Object constructor + */ + function __construct() + { + } + + /** + * Send simple (one line) command to the connection stream + * + * @param string $string Command string + * @param bool $endln True if CRLF need to be added at the end of command + * + * @param int Number of bytes sent, False on error + */ + function putLine($string, $endln=true) + { + if (!$this->fp) + return false; + + if ($this->_debug) { + $this->debug('C: '. rtrim($string)); + } + + $res = fwrite($this->fp, $string . ($endln ? "\r\n" : '')); + + if ($res === false) { + @fclose($this->fp); + $this->fp = null; + } + + return $res; + } + + /** + * Send command to the connection stream with Command Continuation + * Requests (RFC3501 7.5) and LITERAL+ (RFC2088) support + * + * @param string $string Command string + * @param bool $endln True if CRLF need to be added at the end of command + * + * @return int|bool Number of bytes sent, False on error + */ + function putLineC($string, $endln=true) + { + if (!$this->fp) { + return false; + } + + if ($endln) { + $string .= "\r\n"; + } + + $res = 0; + if ($parts = preg_split('/(\{[0-9]+\}\r\n)/m', $string, -1, PREG_SPLIT_DELIM_CAPTURE)) { + for ($i=0, $cnt=count($parts); $i<$cnt; $i++) { + if (preg_match('/^\{([0-9]+)\}\r\n$/', $parts[$i+1], $matches)) { + // LITERAL+ support + if ($this->prefs['literal+']) { + $parts[$i+1] = sprintf("{%d+}\r\n", $matches[1]); + } + + $bytes = $this->putLine($parts[$i].$parts[$i+1], false); + if ($bytes === false) + return false; + $res += $bytes; + + // don't wait if server supports LITERAL+ capability + if (!$this->prefs['literal+']) { + $line = $this->readLine(1000); + // handle error in command + if ($line[0] != '+') + return false; + } + $i++; + } + else { + $bytes = $this->putLine($parts[$i], false); + if ($bytes === false) + return false; + $res += $bytes; + } + } + } + return $res; + } + + /** + * Reads line from the connection stream + * + * @param int $size Buffer size + * + * @return string Line of text response + */ + function readLine($size=1024) + { + $line = ''; + + if (!$size) { + $size = 1024; + } + + do { + if ($this->eof()) { + return $line ? $line : NULL; + } + + $buffer = fgets($this->fp, $size); + + if ($buffer === false) { + $this->closeSocket(); + break; + } + if ($this->_debug) { + $this->debug('S: '. rtrim($buffer)); + } + $line .= $buffer; + } while (substr($buffer, -1) != "\n"); + + return $line; + } + + /** + * Reads more data from the connection stream when provided + * data contain string literal + * + * @param string $line Response text + * @param bool $escape Enables escaping + * + * @return string Line of text response + */ + function multLine($line, $escape = false) + { + $line = rtrim($line); + if (preg_match('/\{([0-9]+)\}$/', $line, $m)) { + $out = ''; + $str = substr($line, 0, -strlen($m[0])); + $bytes = $m[1]; + + while (strlen($out) < $bytes) { + $line = $this->readBytes($bytes); + if ($line === NULL) + break; + $out .= $line; + } + + $line = $str . ($escape ? $this->escape($out) : $out); + } + + return $line; + } + + /** + * Reads specified number of bytes from the connection stream + * + * @param int $bytes Number of bytes to get + * + * @return string Response text + */ + function readBytes($bytes) + { + $data = ''; + $len = 0; + while ($len < $bytes && !$this->eof()) + { + $d = fread($this->fp, $bytes-$len); + if ($this->_debug) { + $this->debug('S: '. $d); + } + $data .= $d; + $data_len = strlen($data); + if ($len == $data_len) { + break; // nothing was read -> exit to avoid apache lockups + } + $len = $data_len; + } + + return $data; + } + + /** + * Reads complete response to the IMAP command + * + * @param array $untagged Will be filled with untagged response lines + * + * @return string Response text + */ + function readReply(&$untagged=null) + { + do { + $line = trim($this->readLine(1024)); + // store untagged response lines + if ($line[0] == '*') + $untagged[] = $line; + } while ($line[0] == '*'); + + if ($untagged) + $untagged = join("\n", $untagged); + + return $line; + } + + /** + * Response parser. + * + * @param string $string Response text + * @param string $err_prefix Error message prefix + * + * @return int Response status + */ + function parseResult($string, $err_prefix='') + { + if (preg_match('/^[a-z0-9*]+ (OK|NO|BAD|BYE)(.*)$/i', trim($string), $matches)) { + $res = strtoupper($matches[1]); + $str = trim($matches[2]); + + if ($res == 'OK') { + $this->errornum = self::ERROR_OK; + } else if ($res == 'NO') { + $this->errornum = self::ERROR_NO; + } else if ($res == 'BAD') { + $this->errornum = self::ERROR_BAD; + } else if ($res == 'BYE') { + $this->closeSocket(); + $this->errornum = self::ERROR_BYE; + } + + if ($str) { + $str = trim($str); + // get response string and code (RFC5530) + if (preg_match("/^\[([a-z-]+)\]/i", $str, $m)) { + $this->resultcode = strtoupper($m[1]); + $str = trim(substr($str, strlen($m[1]) + 2)); + } + else { + $this->resultcode = null; + // parse response for [APPENDUID 1204196876 3456] + if (preg_match("/^\[APPENDUID [0-9]+ ([0-9]+)\]/i", $str, $m)) { + $this->data['APPENDUID'] = $m[1]; + } + // parse response for [COPYUID 1204196876 3456:3457 123:124] + else if (preg_match("/^\[COPYUID [0-9]+ ([0-9,:]+) ([0-9,:]+)\]/i", $str, $m)) { + $this->data['COPYUID'] = array($m[1], $m[2]); + } + } + $this->result = $str; + + if ($this->errornum != self::ERROR_OK) { + $this->error = $err_prefix ? $err_prefix.$str : $str; + } + } + + return $this->errornum; + } + return self::ERROR_UNKNOWN; + } + + /** + * Checks connection stream state. + * + * @return bool True if connection is closed + */ + private function eof() + { + if (!is_resource($this->fp)) { + return true; + } + + // If a connection opened by fsockopen() wasn't closed + // by the server, feof() will hang. + $start = microtime(true); + + if (feof($this->fp) || + ($this->prefs['timeout'] && (microtime(true) - $start > $this->prefs['timeout'])) + ) { + $this->closeSocket(); + return true; + } + + return false; + } + + /** + * Closes connection stream. + */ + private function closeSocket() + { + @fclose($this->fp); + $this->fp = null; + } + + /** + * Error code/message setter. + */ + function setError($code, $msg='') + { + $this->errornum = $code; + $this->error = $msg; + } + + /** + * Checks response status. + * Checks if command response line starts with specified prefix (or * BYE/BAD) + * + * @param string $string Response text + * @param string $match Prefix to match with (case-sensitive) + * @param bool $error Enables BYE/BAD checking + * @param bool $nonempty Enables empty response checking + * + * @return bool True any check is true or connection is closed. + */ + function startsWith($string, $match, $error=false, $nonempty=false) + { + if (!$this->fp) { + return true; + } + if (strncmp($string, $match, strlen($match)) == 0) { + return true; + } + if ($error && preg_match('/^\* (BYE|BAD) /i', $string, $m)) { + if (strtoupper($m[1]) == 'BYE') { + $this->closeSocket(); + } + return true; + } + if ($nonempty && !strlen($string)) { + return true; + } + return false; + } + + private function hasCapability($name) + { + if (empty($this->capability) || $name == '') { + return false; + } + + if (in_array($name, $this->capability)) { + return true; + } + else if (strpos($name, '=')) { + return false; + } + + $result = array(); + foreach ($this->capability as $cap) { + $entry = explode('=', $cap); + if ($entry[0] == $name) { + $result[] = $entry[1]; + } + } + + return !empty($result) ? $result : false; + } + + /** + * Capabilities checker + * + * @param string $name Capability name + * + * @return mixed Capability values array for key=value pairs, true/false for others + */ + function getCapability($name) + { + $result = $this->hasCapability($name); + + if (!empty($result)) { + return $result; + } + else if ($this->capability_readed) { + return false; + } + + // get capabilities (only once) because initial + // optional CAPABILITY response may differ + $result = $this->execute('CAPABILITY'); + + if ($result[0] == self::ERROR_OK) { + $this->parseCapability($result[1]); + } + + $this->capability_readed = true; + + return $this->hasCapability($name); + } + + function clearCapability() + { + $this->capability = array(); + $this->capability_readed = false; + } + + /** + * DIGEST-MD5/CRAM-MD5/PLAIN Authentication + * + * @param string $user + * @param string $pass + * @param string $type Authentication type (PLAIN/CRAM-MD5/DIGEST-MD5) + * + * @return resource Connection resourse on success, error code on error + */ + function authenticate($user, $pass, $type='PLAIN') + { + if ($type == 'CRAM-MD5' || $type == 'DIGEST-MD5') { + if ($type == 'DIGEST-MD5' && !class_exists('Auth_SASL')) { + $this->setError(self::ERROR_BYE, + "The Auth_SASL package is required for DIGEST-MD5 authentication"); + return self::ERROR_BAD; + } + + $this->putLine($this->nextTag() . " AUTHENTICATE $type"); + $line = trim($this->readReply()); + + if ($line[0] == '+') { + $challenge = substr($line, 2); + } + else { + return $this->parseResult($line); + } + + if ($type == 'CRAM-MD5') { + // RFC2195: CRAM-MD5 + $ipad = ''; + $opad = ''; + + // initialize ipad, opad + for ($i=0; $i<64; $i++) { + $ipad .= chr(0x36); + $opad .= chr(0x5C); + } + + // pad $pass so it's 64 bytes + $padLen = 64 - strlen($pass); + for ($i=0; $i<$padLen; $i++) { + $pass .= chr(0); + } + + // generate hash + $hash = md5($this->_xor($pass, $opad) . pack("H*", + md5($this->_xor($pass, $ipad) . base64_decode($challenge)))); + $reply = base64_encode($user . ' ' . $hash); + + // send result + $this->putLine($reply); + } + else { + // RFC2831: DIGEST-MD5 + // proxy authorization + if (!empty($this->prefs['auth_cid'])) { + $authc = $this->prefs['auth_cid']; + $pass = $this->prefs['auth_pw']; + } + else { + $authc = $user; + $user = ''; + } + $auth_sasl = Auth_SASL::factory('digestmd5'); + $reply = base64_encode($auth_sasl->getResponse($authc, $pass, + base64_decode($challenge), $this->host, 'imap', $user)); + + // send result + $this->putLine($reply); + $line = trim($this->readReply()); + + if ($line[0] == '+') { + $challenge = substr($line, 2); + } + else { + return $this->parseResult($line); + } + + // check response + $challenge = base64_decode($challenge); + if (strpos($challenge, 'rspauth=') === false) { + $this->setError(self::ERROR_BAD, + "Unexpected response from server to DIGEST-MD5 response"); + return self::ERROR_BAD; + } + + $this->putLine(''); + } + + $line = $this->readReply(); + $result = $this->parseResult($line); + } + else { // PLAIN + // proxy authorization + if (!empty($this->prefs['auth_cid'])) { + $authc = $this->prefs['auth_cid']; + $pass = $this->prefs['auth_pw']; + } + else { + $authc = $user; + $user = ''; + } + + $reply = base64_encode($user . chr(0) . $authc . chr(0) . $pass); + + // RFC 4959 (SASL-IR): save one round trip + if ($this->getCapability('SASL-IR')) { + list($result, $line) = $this->execute("AUTHENTICATE PLAIN", array($reply), + self::COMMAND_LASTLINE | self::COMMAND_CAPABILITY); + } + else { + $this->putLine($this->nextTag() . " AUTHENTICATE PLAIN"); + $line = trim($this->readReply()); + + if ($line[0] != '+') { + return $this->parseResult($line); + } + + // send result, get reply and process it + $this->putLine($reply); + $line = $this->readReply(); + $result = $this->parseResult($line); + } + } + + if ($result == self::ERROR_OK) { + // optional CAPABILITY response + if ($line && preg_match('/\[CAPABILITY ([^]]+)\]/i', $line, $matches)) { + $this->parseCapability($matches[1], true); + } + return $this->fp; + } + else { + $this->setError($result, "AUTHENTICATE $type: $line"); + } + + return $result; + } + + /** + * LOGIN Authentication + * + * @param string $user + * @param string $pass + * + * @return resource Connection resourse on success, error code on error + */ + function login($user, $password) + { + list($code, $response) = $this->execute('LOGIN', array( + $this->escape($user), $this->escape($password)), self::COMMAND_CAPABILITY); + + // re-set capabilities list if untagged CAPABILITY response provided + if (preg_match('/\* CAPABILITY (.+)/i', $response, $matches)) { + $this->parseCapability($matches[1], true); + } + + if ($code == self::ERROR_OK) { + return $this->fp; + } + + return $code; + } + + /** + * Detects hierarchy delimiter + * + * @return string The delimiter + */ + function getHierarchyDelimiter() + { + if ($this->prefs['delimiter']) { + return $this->prefs['delimiter']; + } + + // try (LIST "" ""), should return delimiter (RFC2060 Sec 6.3.8) + list($code, $response) = $this->execute('LIST', + array($this->escape(''), $this->escape(''))); + + if ($code == self::ERROR_OK) { + $args = $this->tokenizeResponse($response, 4); + $delimiter = $args[3]; + + if (strlen($delimiter) > 0) { + return ($this->prefs['delimiter'] = $delimiter); + } + } + + return NULL; + } + + /** + * NAMESPACE handler (RFC 2342) + * + * @return array Namespace data hash (personal, other, shared) + */ + function getNamespace() + { + if (array_key_exists('namespace', $this->prefs)) { + return $this->prefs['namespace']; + } + + if (!$this->getCapability('NAMESPACE')) { + return self::ERROR_BAD; + } + + list($code, $response) = $this->execute('NAMESPACE'); + + if ($code == self::ERROR_OK && preg_match('/^\* NAMESPACE /', $response)) { + $data = $this->tokenizeResponse(substr($response, 11)); + } + + if (!is_array($data)) { + return $code; + } + + $this->prefs['namespace'] = array( + 'personal' => $data[0], + 'other' => $data[1], + 'shared' => $data[2], + ); + + return $this->prefs['namespace']; + } + + /** + * Connects to IMAP server and authenticates. + * + * @param string $host Server hostname or IP + * @param string $user User name + * @param string $password Password + * @param array $options Connection and class options + * + * @return bool True on success, False on failure + */ + function connect($host, $user, $password, $options=null) + { + // set options + if (is_array($options)) { + $this->prefs = $options; + } + // set auth method + if (!empty($this->prefs['auth_type'])) { + $auth_method = strtoupper($this->prefs['auth_type']); + } else { + $auth_method = 'CHECK'; + } + + $result = false; + + // initialize connection + $this->error = ''; + $this->errornum = self::ERROR_OK; + $this->selected = null; + $this->user = $user; + $this->host = $host; + $this->logged = false; + + // check input + if (empty($host)) { + $this->setError(self::ERROR_BAD, "Empty host"); + return false; + } + if (empty($user)) { + $this->setError(self::ERROR_NO, "Empty user"); + return false; + } + if (empty($password)) { + $this->setError(self::ERROR_NO, "Empty password"); + return false; + } + + if (!$this->prefs['port']) { + $this->prefs['port'] = 143; + } + // check for SSL + if ($this->prefs['ssl_mode'] && $this->prefs['ssl_mode'] != 'tls') { + $host = $this->prefs['ssl_mode'] . '://' . $host; + } + + if ($this->prefs['timeout'] <= 0) { + $this->prefs['timeout'] = ini_get('default_socket_timeout'); + } + + // Connect + $this->fp = @fsockopen($host, $this->prefs['port'], $errno, $errstr, $this->prefs['timeout']); + + if (!$this->fp) { + $this->setError(self::ERROR_BAD, sprintf("Could not connect to %s:%d: %s", $host, $this->prefs['port'], $errstr)); + return false; + } + + if ($this->prefs['timeout'] > 0) + stream_set_timeout($this->fp, $this->prefs['timeout']); + + $line = trim(fgets($this->fp, 8192)); + + if ($this->_debug) { + // set connection identifier for debug output + preg_match('/#([0-9]+)/', (string)$this->fp, $m); + $this->resourceid = strtoupper(substr(md5($m[1].$this->user.microtime()), 0, 4)); + + if ($line) + $this->debug('S: '. $line); + } + + // Connected to wrong port or connection error? + if (!preg_match('/^\* (OK|PREAUTH)/i', $line)) { + if ($line) + $error = sprintf("Wrong startup greeting (%s:%d): %s", $host, $this->prefs['port'], $line); + else + $error = sprintf("Empty startup greeting (%s:%d)", $host, $this->prefs['port']); + + $this->setError(self::ERROR_BAD, $error); + $this->closeConnection(); + return false; + } + + // RFC3501 [7.1] optional CAPABILITY response + if (preg_match('/\[CAPABILITY ([^]]+)\]/i', $line, $matches)) { + $this->parseCapability($matches[1], true); + } + + // TLS connection + if ($this->prefs['ssl_mode'] == 'tls' && $this->getCapability('STARTTLS')) { + if (version_compare(PHP_VERSION, '5.1.0', '>=')) { + $res = $this->execute('STARTTLS'); + + if ($res[0] != self::ERROR_OK) { + $this->closeConnection(); + return false; + } + + if (!stream_socket_enable_crypto($this->fp, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) { + $this->setError(self::ERROR_BAD, "Unable to negotiate TLS"); + $this->closeConnection(); + return false; + } + + // Now we're secure, capabilities need to be reread + $this->clearCapability(); + } + } + + // Send ID info + if (!empty($this->prefs['ident']) && $this->getCapability('ID')) { + $this->id($this->prefs['ident']); + } + + $auth_methods = array(); + $result = null; + + // check for supported auth methods + if ($auth_method == 'CHECK') { + if ($auth_caps = $this->getCapability('AUTH')) { + $auth_methods = $auth_caps; + } + // RFC 2595 (LOGINDISABLED) LOGIN disabled when connection is not secure + $login_disabled = $this->getCapability('LOGINDISABLED'); + if (($key = array_search('LOGIN', $auth_methods)) !== false) { + if ($login_disabled) { + unset($auth_methods[$key]); + } + } + else if (!$login_disabled) { + $auth_methods[] = 'LOGIN'; + } + + // Use best (for security) supported authentication method + foreach (array('DIGEST-MD5', 'CRAM-MD5', 'CRAM_MD5', 'PLAIN', 'LOGIN') as $auth_method) { + if (in_array($auth_method, $auth_methods)) { + break; + } + } + } + else { + // Prevent from sending credentials in plain text when connection is not secure + if ($auth_method == 'LOGIN' && $this->getCapability('LOGINDISABLED')) { + $this->setError(self::ERROR_BAD, "Login disabled by IMAP server"); + $this->closeConnection(); + return false; + } + // replace AUTH with CRAM-MD5 for backward compat. + if ($auth_method == 'AUTH') { + $auth_method = 'CRAM-MD5'; + } + } + + // pre-login capabilities can be not complete + $this->capability_readed = false; + + // Authenticate + switch ($auth_method) { + case 'CRAM_MD5': + $auth_method = 'CRAM-MD5'; + case 'CRAM-MD5': + case 'DIGEST-MD5': + case 'PLAIN': + $result = $this->authenticate($user, $password, $auth_method); + break; + case 'LOGIN': + $result = $this->login($user, $password); + break; + default: + $this->setError(self::ERROR_BAD, "Configuration error. Unknown auth method: $auth_method"); + } + + // Connected and authenticated + if (is_resource($result)) { + if ($this->prefs['force_caps']) { + $this->clearCapability(); + } + $this->logged = true; + + return true; + } + + $this->closeConnection(); + + return false; + } + + /** + * Checks connection status + * + * @return bool True if connection is active and user is logged in, False otherwise. + */ + function connected() + { + return ($this->fp && $this->logged) ? true : false; + } + + /** + * Closes connection with logout. + */ + function closeConnection() + { + if ($this->putLine($this->nextTag() . ' LOGOUT')) { + $this->readReply(); + } + + $this->closeSocket(); + } + + /** + * Executes SELECT command (if mailbox is already not in selected state) + * + * @param string $mailbox Mailbox name + * @param array $qresync_data QRESYNC data (RFC5162) + * + * @return boolean True on success, false on error + */ + function select($mailbox, $qresync_data = null) + { + if (!strlen($mailbox)) { + return false; + } + + if ($this->selected === $mailbox) { + return true; + } +/* + Temporary commented out because Courier returns \Noselect for INBOX + Requires more investigation + + if (is_array($this->data['LIST']) && is_array($opts = $this->data['LIST'][$mailbox])) { + if (in_array('\\Noselect', $opts)) { + return false; + } + } +*/ + $params = array($this->escape($mailbox)); + + // QRESYNC data items + // 0. the last known UIDVALIDITY, + // 1. the last known modification sequence, + // 2. the optional set of known UIDs, and + // 3. an optional parenthesized list of known sequence ranges and their + // corresponding UIDs. + if (!empty($qresync_data)) { + if (!empty($qresync_data[2])) + $qresync_data[2] = self::compressMessageSet($qresync_data[2]); + $params[] = array('QRESYNC', $qresync_data); + } + + list($code, $response) = $this->execute('SELECT', $params); + + if ($code == self::ERROR_OK) { + $response = explode("\r\n", $response); + foreach ($response as $line) { + if (preg_match('/^\* ([0-9]+) (EXISTS|RECENT)$/i', $line, $m)) { + $this->data[strtoupper($m[2])] = (int) $m[1]; + } + else if (preg_match('/^\* OK \[/i', $line, $match)) { + $line = substr($line, 6); + if (preg_match('/^(UIDNEXT|UIDVALIDITY|UNSEEN) ([0-9]+)/i', $line, $match)) { + $this->data[strtoupper($match[1])] = (int) $match[2]; + } + else if (preg_match('/^(HIGHESTMODSEQ) ([0-9]+)/i', $line, $match)) { + $this->data[strtoupper($match[1])] = (string) $match[2]; + } + else if (preg_match('/^(NOMODSEQ)/i', $line, $match)) { + $this->data[strtoupper($match[1])] = true; + } + else if (preg_match('/^PERMANENTFLAGS \(([^\)]+)\)/iU', $line, $match)) { + $this->data['PERMANENTFLAGS'] = explode(' ', $match[1]); + } + } + // QRESYNC FETCH response (RFC5162) + else if (preg_match('/^\* ([0-9+]) FETCH/i', $line, $match)) { + $line = substr($line, strlen($match[0])); + $fetch_data = $this->tokenizeResponse($line, 1); + $data = array('id' => $match[1]); + + for ($i=0, $size=count($fetch_data); $i<$size; $i+=2) { + $data[strtolower($fetch_data[$i])] = $fetch_data[$i+1]; + } + + $this->data['QRESYNC'][$data['uid']] = $data; + } + // QRESYNC VANISHED response (RFC5162) + else if (preg_match('/^\* VANISHED [()EARLIER]*/i', $line, $match)) { + $line = substr($line, strlen($match[0])); + $v_data = $this->tokenizeResponse($line, 1); + + $this->data['VANISHED'] = $v_data; + } + } + + $this->data['READ-WRITE'] = $this->resultcode != 'READ-ONLY'; + + $this->selected = $mailbox; + return true; + } + + return false; + } + + /** + * Executes STATUS command + * + * @param string $mailbox Mailbox name + * @param array $items Additional requested item names. By default + * MESSAGES and UNSEEN are requested. Other defined + * in RFC3501: UIDNEXT, UIDVALIDITY, RECENT + * + * @return array Status item-value hash + * @since 0.5-beta + */ + function status($mailbox, $items=array()) + { + if (!strlen($mailbox)) { + return false; + } + + if (!in_array('MESSAGES', $items)) { + $items[] = 'MESSAGES'; + } + if (!in_array('UNSEEN', $items)) { + $items[] = 'UNSEEN'; + } + + list($code, $response) = $this->execute('STATUS', array($this->escape($mailbox), + '(' . implode(' ', (array) $items) . ')')); + + if ($code == self::ERROR_OK && preg_match('/\* STATUS /i', $response)) { + $result = array(); + $response = substr($response, 9); // remove prefix "* STATUS " + + list($mbox, $items) = $this->tokenizeResponse($response, 2); + + // Fix for #1487859. Some buggy server returns not quoted + // folder name with spaces. Let's try to handle this situation + if (!is_array($items) && ($pos = strpos($response, '(')) !== false) { + $response = substr($response, $pos); + $items = $this->tokenizeResponse($response, 1); + if (!is_array($items)) { + return $result; + } + } + + for ($i=0, $len=count($items); $i<$len; $i += 2) { + $result[$items[$i]] = $items[$i+1]; + } + + $this->data['STATUS:'.$mailbox] = $result; + + return $result; + } + + return false; + } + + /** + * Executes EXPUNGE command + * + * @param string $mailbox Mailbox name + * @param string $messages Message UIDs to expunge + * + * @return boolean True on success, False on error + */ + function expunge($mailbox, $messages=NULL) + { + if (!$this->select($mailbox)) { + return false; + } + + if (!$this->data['READ-WRITE']) { + $this->setError(self::ERROR_READONLY, "Mailbox is read-only", 'EXPUNGE'); + return false; + } + + // Clear internal status cache + unset($this->data['STATUS:'.$mailbox]); + + if ($messages) + $result = $this->execute('UID EXPUNGE', array($messages), self::COMMAND_NORESPONSE); + else + $result = $this->execute('EXPUNGE', null, self::COMMAND_NORESPONSE); + + if ($result == self::ERROR_OK) { + $this->selected = null; // state has changed, need to reselect + return true; + } + + return false; + } + + /** + * Executes CLOSE command + * + * @return boolean True on success, False on error + * @since 0.5 + */ + function close() + { + $result = $this->execute('CLOSE', NULL, self::COMMAND_NORESPONSE); + + if ($result == self::ERROR_OK) { + $this->selected = null; + return true; + } + + return false; + } + + /** + * Folder subscription (SUBSCRIBE) + * + * @param string $mailbox Mailbox name + * + * @return boolean True on success, False on error + */ + function subscribe($mailbox) + { + $result = $this->execute('SUBSCRIBE', array($this->escape($mailbox)), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Folder unsubscription (UNSUBSCRIBE) + * + * @param string $mailbox Mailbox name + * + * @return boolean True on success, False on error + */ + function unsubscribe($mailbox) + { + $result = $this->execute('UNSUBSCRIBE', array($this->escape($mailbox)), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Folder creation (CREATE) + * + * @param string $mailbox Mailbox name + * + * @return bool True on success, False on error + */ + function createFolder($mailbox) + { + $result = $this->execute('CREATE', array($this->escape($mailbox)), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Folder renaming (RENAME) + * + * @param string $mailbox Mailbox name + * + * @return bool True on success, False on error + */ + function renameFolder($from, $to) + { + $result = $this->execute('RENAME', array($this->escape($from), $this->escape($to)), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Executes DELETE command + * + * @param string $mailbox Mailbox name + * + * @return boolean True on success, False on error + */ + function deleteFolder($mailbox) + { + $result = $this->execute('DELETE', array($this->escape($mailbox)), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Removes all messages in a folder + * + * @param string $mailbox Mailbox name + * + * @return boolean True on success, False on error + */ + function clearFolder($mailbox) + { + $num_in_trash = $this->countMessages($mailbox); + if ($num_in_trash > 0) { + $res = $this->flag($mailbox, '1:*', 'DELETED'); + } + + if ($res) { + if ($this->selected === $mailbox) + $res = $this->close(); + else + $res = $this->expunge($mailbox); + } + + return $res; + } + + /** + * Returns list of mailboxes + * + * @param string $ref Reference name + * @param string $mailbox Mailbox name + * @param array $status_opts (see self::_listMailboxes) + * @param array $select_opts (see self::_listMailboxes) + * + * @return array List of mailboxes or hash of options if $status_opts argument + * is non-empty. + */ + function listMailboxes($ref, $mailbox, $status_opts=array(), $select_opts=array()) + { + return $this->_listMailboxes($ref, $mailbox, false, $status_opts, $select_opts); + } + + /** + * Returns list of subscribed mailboxes + * + * @param string $ref Reference name + * @param string $mailbox Mailbox name + * @param array $status_opts (see self::_listMailboxes) + * + * @return array List of mailboxes or hash of options if $status_opts argument + * is non-empty. + */ + function listSubscribed($ref, $mailbox, $status_opts=array()) + { + return $this->_listMailboxes($ref, $mailbox, true, $status_opts, NULL); + } + + /** + * IMAP LIST/LSUB command + * + * @param string $ref Reference name + * @param string $mailbox Mailbox name + * @param bool $subscribed Enables returning subscribed mailboxes only + * @param array $status_opts List of STATUS options (RFC5819: LIST-STATUS) + * Possible: MESSAGES, RECENT, UIDNEXT, UIDVALIDITY, UNSEEN + * @param array $select_opts List of selection options (RFC5258: LIST-EXTENDED) + * Possible: SUBSCRIBED, RECURSIVEMATCH, REMOTE + * + * @return array List of mailboxes or hash of options if $status_ops argument + * is non-empty. + */ + private function _listMailboxes($ref, $mailbox, $subscribed=false, + $status_opts=array(), $select_opts=array()) + { + if (!strlen($mailbox)) { + $mailbox = '*'; + } + + $args = array(); + + if (!empty($select_opts) && $this->getCapability('LIST-EXTENDED')) { + $select_opts = (array) $select_opts; + + $args[] = '(' . implode(' ', $select_opts) . ')'; + } + + $args[] = $this->escape($ref); + $args[] = $this->escape($mailbox); + + if (!empty($status_opts) && $this->getCapability('LIST-STATUS')) { + $status_opts = (array) $status_opts; + $lstatus = true; + + $args[] = 'RETURN (STATUS (' . implode(' ', $status_opts) . '))'; + } + + list($code, $response) = $this->execute($subscribed ? 'LSUB' : 'LIST', $args); + + if ($code == self::ERROR_OK) { + $folders = array(); + $last = 0; + $pos = 0; + $response .= "\r\n"; + + while ($pos = strpos($response, "\r\n", $pos+1)) { + // literal string, not real end-of-command-line + if ($response[$pos-1] == '}') { + continue; + } + + $line = substr($response, $last, $pos - $last); + $last = $pos + 2; + + if (!preg_match('/^\* (LIST|LSUB|STATUS) /i', $line, $m)) { + continue; + } + $cmd = strtoupper($m[1]); + $line = substr($line, strlen($m[0])); + + // * LIST (<options>) <delimiter> <mailbox> + if ($cmd == 'LIST' || $cmd == 'LSUB') { + list($opts, $delim, $mailbox) = $this->tokenizeResponse($line, 3); + + // Add to result array + if (!$lstatus) { + $folders[] = $mailbox; + } + else { + $folders[$mailbox] = array(); + } + + // store LSUB options only if not empty, this way + // we can detect a situation when LIST doesn't return specified folder + if (!empty($opts) || $cmd == 'LIST') { + // Add to options array + if (empty($this->data['LIST'][$mailbox])) + $this->data['LIST'][$mailbox] = $opts; + else if (!empty($opts)) + $this->data['LIST'][$mailbox] = array_unique(array_merge( + $this->data['LIST'][$mailbox], $opts)); + } + } + // * STATUS <mailbox> (<result>) + else if ($cmd == 'STATUS') { + list($mailbox, $status) = $this->tokenizeResponse($line, 2); + + for ($i=0, $len=count($status); $i<$len; $i += 2) { + list($name, $value) = $this->tokenizeResponse($status, 2); + $folders[$mailbox][$name] = $value; + } + } + } + + return $folders; + } + + return false; + } + + /** + * Returns count of all messages in a folder + * + * @param string $mailbox Mailbox name + * + * @return int Number of messages, False on error + */ + function countMessages($mailbox, $refresh = false) + { + if ($refresh) { + $this->selected = null; + } + + if ($this->selected === $mailbox) { + return $this->data['EXISTS']; + } + + // Check internal cache + $cache = $this->data['STATUS:'.$mailbox]; + if (!empty($cache) && isset($cache['MESSAGES'])) { + return (int) $cache['MESSAGES']; + } + + // Try STATUS (should be faster than SELECT) + $counts = $this->status($mailbox); + if (is_array($counts)) { + return (int) $counts['MESSAGES']; + } + + return false; + } + + /** + * Returns count of messages with \Recent flag in a folder + * + * @param string $mailbox Mailbox name + * + * @return int Number of messages, False on error + */ + function countRecent($mailbox) + { + if (!strlen($mailbox)) { + $mailbox = 'INBOX'; + } + + $this->select($mailbox); + + if ($this->selected === $mailbox) { + return $this->data['RECENT']; + } + + return false; + } + + /** + * Returns count of messages without \Seen flag in a specified folder + * + * @param string $mailbox Mailbox name + * + * @return int Number of messages, False on error + */ + function countUnseen($mailbox) + { + // Check internal cache + $cache = $this->data['STATUS:'.$mailbox]; + if (!empty($cache) && isset($cache['UNSEEN'])) { + return (int) $cache['UNSEEN']; + } + + // Try STATUS (should be faster than SELECT+SEARCH) + $counts = $this->status($mailbox); + if (is_array($counts)) { + return (int) $counts['UNSEEN']; + } + + // Invoke SEARCH as a fallback + $index = $this->search($mailbox, 'ALL UNSEEN', false, array('COUNT')); + if (!$index->is_error()) { + return $index->count(); + } + + return false; + } + + /** + * Executes ID command (RFC2971) + * + * @param array $items Client identification information key/value hash + * + * @return array Server identification information key/value hash + * @since 0.6 + */ + function id($items=array()) + { + if (is_array($items) && !empty($items)) { + foreach ($items as $key => $value) { + $args[] = $this->escape($key, true); + $args[] = $this->escape($value, true); + } + } + + list($code, $response) = $this->execute('ID', array( + !empty($args) ? '(' . implode(' ', (array) $args) . ')' : $this->escape(null) + )); + + + if ($code == self::ERROR_OK && preg_match('/\* ID /i', $response)) { + $response = substr($response, 5); // remove prefix "* ID " + $items = $this->tokenizeResponse($response, 1); + $result = null; + + for ($i=0, $len=count($items); $i<$len; $i += 2) { + $result[$items[$i]] = $items[$i+1]; + } + + return $result; + } + + return false; + } + + /** + * Executes ENABLE command (RFC5161) + * + * @param mixed $extension Extension name to enable (or array of names) + * + * @return array|bool List of enabled extensions, False on error + * @since 0.6 + */ + function enable($extension) + { + if (empty($extension)) { + return false; + } + + if (!$this->hasCapability('ENABLE')) { + return false; + } + + if (!is_array($extension)) { + $extension = array($extension); + } + + if (!empty($this->extensions_enabled)) { + // check if all extensions are already enabled + $diff = array_diff($extension, $this->extensions_enabled); + + if (empty($diff)) { + return $extension; + } + + // Make sure the mailbox isn't selected, before enabling extension(s) + if ($this->selected !== null) { + $this->close(); + } + } + + list($code, $response) = $this->execute('ENABLE', $extension); + + if ($code == self::ERROR_OK && preg_match('/\* ENABLED /i', $response)) { + $response = substr($response, 10); // remove prefix "* ENABLED " + $result = (array) $this->tokenizeResponse($response); + + $this->extensions_enabled = array_unique(array_merge((array)$this->extensions_enabled, $result)); + + return $this->extensions_enabled; + } + + return false; + } + + /** + * Executes SORT command + * + * @param string $mailbox Mailbox name + * @param string $field Field to sort by (ARRIVAL, CC, DATE, FROM, SIZE, SUBJECT, TO) + * @param string $add Searching criteria + * @param bool $return_uid Enables UID SORT usage + * @param string $encoding Character set + * + * @return rcube_result_index Response data + */ + function sort($mailbox, $field, $add='', $return_uid=false, $encoding = 'US-ASCII') + { + $field = strtoupper($field); + if ($field == 'INTERNALDATE') { + $field = 'ARRIVAL'; + } + + $fields = array('ARRIVAL' => 1,'CC' => 1,'DATE' => 1, + 'FROM' => 1, 'SIZE' => 1, 'SUBJECT' => 1, 'TO' => 1); + + if (!$fields[$field]) { + return new rcube_result_index($mailbox); + } + + if (!$this->select($mailbox)) { + return new rcube_result_index($mailbox); + } + + // RFC 5957: SORT=DISPLAY + if (($field == 'FROM' || $field == 'TO') && $this->getCapability('SORT=DISPLAY')) { + $field = 'DISPLAY' . $field; + } + + // message IDs + if (!empty($add)) + $add = $this->compressMessageSet($add); + + list($code, $response) = $this->execute($return_uid ? 'UID SORT' : 'SORT', + array("($field)", $encoding, 'ALL' . (!empty($add) ? ' '.$add : ''))); + + if ($code != self::ERROR_OK) { + $response = null; + } + + return new rcube_result_index($mailbox, $response); + } + + /** + * Executes THREAD command + * + * @param string $mailbox Mailbox name + * @param string $algorithm Threading algorithm (ORDEREDSUBJECT, REFERENCES, REFS) + * @param string $criteria Searching criteria + * @param bool $return_uid Enables UIDs in result instead of sequence numbers + * @param string $encoding Character set + * + * @return rcube_result_thread Thread data + */ + function thread($mailbox, $algorithm='REFERENCES', $criteria='', $return_uid=false, $encoding='US-ASCII') + { + $old_sel = $this->selected; + + if (!$this->select($mailbox)) { + return new rcube_result_thread($mailbox); + } + + // return empty result when folder is empty and we're just after SELECT + if ($old_sel != $mailbox && !$this->data['EXISTS']) { + return new rcube_result_thread($mailbox); + } + + $encoding = $encoding ? trim($encoding) : 'US-ASCII'; + $algorithm = $algorithm ? trim($algorithm) : 'REFERENCES'; + $criteria = $criteria ? 'ALL '.trim($criteria) : 'ALL'; + $data = ''; + + list($code, $response) = $this->execute($return_uid ? 'UID THREAD' : 'THREAD', + array($algorithm, $encoding, $criteria)); + + if ($code != self::ERROR_OK) { + $response = null; + } + + return new rcube_result_thread($mailbox, $response); + } + + /** + * Executes SEARCH command + * + * @param string $mailbox Mailbox name + * @param string $criteria Searching criteria + * @param bool $return_uid Enable UID in result instead of sequence ID + * @param array $items Return items (MIN, MAX, COUNT, ALL) + * + * @return rcube_result_index Result data + */ + function search($mailbox, $criteria, $return_uid=false, $items=array()) + { + $old_sel = $this->selected; + + if (!$this->select($mailbox)) { + return new rcube_result_index($mailbox); + } + + // return empty result when folder is empty and we're just after SELECT + if ($old_sel != $mailbox && !$this->data['EXISTS']) { + return new rcube_result_index($mailbox, '* SEARCH'); + } + + // If ESEARCH is supported always use ALL + // but not when items are specified or using simple id2uid search + if (empty($items) && preg_match('/[^0-9]/', $criteria)) { + $items = array('ALL'); + } + + $esearch = empty($items) ? false : $this->getCapability('ESEARCH'); + $criteria = trim($criteria); + $params = ''; + + // RFC4731: ESEARCH + if (!empty($items) && $esearch) { + $params .= 'RETURN (' . implode(' ', $items) . ')'; + } + + if (!empty($criteria)) { + $modseq = stripos($criteria, 'MODSEQ') !== false; + $params .= ($params ? ' ' : '') . $criteria; + } + else { + $params .= 'ALL'; + } + + list($code, $response) = $this->execute($return_uid ? 'UID SEARCH' : 'SEARCH', + array($params)); + + if ($code != self::ERROR_OK) { + $response = null; + } + + return new rcube_result_index($mailbox, $response); + } + + /** + * Simulates SORT command by using FETCH and sorting. + * + * @param string $mailbox Mailbox name + * @param string|array $message_set Searching criteria (list of messages to return) + * @param string $index_field Field to sort by (ARRIVAL, CC, DATE, FROM, SIZE, SUBJECT, TO) + * @param bool $skip_deleted Makes that DELETED messages will be skipped + * @param bool $uidfetch Enables UID FETCH usage + * @param bool $return_uid Enables returning UIDs instead of IDs + * + * @return rcube_result_index Response data + */ + function index($mailbox, $message_set, $index_field='', $skip_deleted=true, + $uidfetch=false, $return_uid=false) + { + $msg_index = $this->fetchHeaderIndex($mailbox, $message_set, + $index_field, $skip_deleted, $uidfetch, $return_uid); + + if (!empty($msg_index)) { + asort($msg_index); // ASC + $msg_index = array_keys($msg_index); + $msg_index = '* SEARCH ' . implode(' ', $msg_index); + } + else { + $msg_index = is_array($msg_index) ? '* SEARCH' : null; + } + + return new rcube_result_index($mailbox, $msg_index); + } + + function fetchHeaderIndex($mailbox, $message_set, $index_field='', $skip_deleted=true, + $uidfetch=false, $return_uid=false) + { + if (is_array($message_set)) { + if (!($message_set = $this->compressMessageSet($message_set))) + return false; + } else { + list($from_idx, $to_idx) = explode(':', $message_set); + if (empty($message_set) || + (isset($to_idx) && $to_idx != '*' && (int)$from_idx > (int)$to_idx)) { + return false; + } + } + + $index_field = empty($index_field) ? 'DATE' : strtoupper($index_field); + + $fields_a['DATE'] = 1; + $fields_a['INTERNALDATE'] = 4; + $fields_a['ARRIVAL'] = 4; + $fields_a['FROM'] = 1; + $fields_a['REPLY-TO'] = 1; + $fields_a['SENDER'] = 1; + $fields_a['TO'] = 1; + $fields_a['CC'] = 1; + $fields_a['SUBJECT'] = 1; + $fields_a['UID'] = 2; + $fields_a['SIZE'] = 2; + $fields_a['SEEN'] = 3; + $fields_a['RECENT'] = 3; + $fields_a['DELETED'] = 3; + + if (!($mode = $fields_a[$index_field])) { + return false; + } + + /* Do "SELECT" command */ + if (!$this->select($mailbox)) { + return false; + } + + // build FETCH command string + $key = $this->nextTag(); + $cmd = $uidfetch ? 'UID FETCH' : 'FETCH'; + $fields = array(); + + if ($return_uid) + $fields[] = 'UID'; + if ($skip_deleted) + $fields[] = 'FLAGS'; + + if ($mode == 1) { + if ($index_field == 'DATE') + $fields[] = 'INTERNALDATE'; + $fields[] = "BODY.PEEK[HEADER.FIELDS ($index_field)]"; + } + else if ($mode == 2) { + if ($index_field == 'SIZE') + $fields[] = 'RFC822.SIZE'; + else if (!$return_uid || $index_field != 'UID') + $fields[] = $index_field; + } + else if ($mode == 3 && !$skip_deleted) + $fields[] = 'FLAGS'; + else if ($mode == 4) + $fields[] = 'INTERNALDATE'; + + $request = "$key $cmd $message_set (" . implode(' ', $fields) . ")"; + + if (!$this->putLine($request)) { + $this->setError(self::ERROR_COMMAND, "Unable to send command: $request"); + return false; + } + + $result = array(); + + do { + $line = rtrim($this->readLine(200)); + $line = $this->multLine($line); + + if (preg_match('/^\* ([0-9]+) FETCH/', $line, $m)) { + $id = $m[1]; + $flags = NULL; + + if ($return_uid) { + if (preg_match('/UID ([0-9]+)/', $line, $matches)) + $id = (int) $matches[1]; + else + continue; + } + if ($skip_deleted && preg_match('/FLAGS \(([^)]+)\)/', $line, $matches)) { + $flags = explode(' ', strtoupper($matches[1])); + if (in_array('\\DELETED', $flags)) { + $deleted[$id] = $id; + continue; + } + } + + if ($mode == 1 && $index_field == 'DATE') { + if (preg_match('/BODY\[HEADER\.FIELDS \("*DATE"*\)\] (.*)/', $line, $matches)) { + $value = preg_replace(array('/^"*[a-z]+:/i'), '', $matches[1]); + $value = trim($value); + $result[$id] = $this->strToTime($value); + } + // non-existent/empty Date: header, use INTERNALDATE + if (empty($result[$id])) { + if (preg_match('/INTERNALDATE "([^"]+)"/', $line, $matches)) + $result[$id] = $this->strToTime($matches[1]); + else + $result[$id] = 0; + } + } else if ($mode == 1) { + if (preg_match('/BODY\[HEADER\.FIELDS \("?(FROM|REPLY-TO|SENDER|TO|SUBJECT)"?\)\] (.*)/', $line, $matches)) { + $value = preg_replace(array('/^"*[a-z]+:/i', '/\s+$/sm'), array('', ''), $matches[2]); + $result[$id] = trim($value); + } else { + $result[$id] = ''; + } + } else if ($mode == 2) { + if (preg_match('/(UID|RFC822\.SIZE) ([0-9]+)/', $line, $matches)) { + $result[$id] = trim($matches[2]); + } else { + $result[$id] = 0; + } + } else if ($mode == 3) { + if (!$flags && preg_match('/FLAGS \(([^)]+)\)/', $line, $matches)) { + $flags = explode(' ', $matches[1]); + } + $result[$id] = in_array('\\'.$index_field, $flags) ? 1 : 0; + } else if ($mode == 4) { + if (preg_match('/INTERNALDATE "([^"]+)"/', $line, $matches)) { + $result[$id] = $this->strToTime($matches[1]); + } else { + $result[$id] = 0; + } + } + } + } while (!$this->startsWith($line, $key, true, true)); + + return $result; + } + + /** + * Returns message sequence identifier + * + * @param string $mailbox Mailbox name + * @param int $uid Message unique identifier (UID) + * + * @return int Message sequence identifier + */ + function UID2ID($mailbox, $uid) + { + if ($uid > 0) { + $index = $this->search($mailbox, "UID $uid"); + + if ($index->count() == 1) { + $arr = $index->get(); + return (int) $arr[0]; + } + } + return null; + } + + /** + * Returns message unique identifier (UID) + * + * @param string $mailbox Mailbox name + * @param int $uid Message sequence identifier + * + * @return int Message unique identifier + */ + function ID2UID($mailbox, $id) + { + if (empty($id) || $id < 0) { + return null; + } + + if (!$this->select($mailbox)) { + return null; + } + + $index = $this->search($mailbox, $id, true); + + if ($index->count() == 1) { + $arr = $index->get(); + return (int) $arr[0]; + } + + return null; + } + + /** + * Sets flag of the message(s) + * + * @param string $mailbox Mailbox name + * @param string|array $messages Message UID(s) + * @param string $flag Flag name + * + * @return bool True on success, False on failure + */ + function flag($mailbox, $messages, $flag) { + return $this->modFlag($mailbox, $messages, $flag, '+'); + } + + /** + * Unsets flag of the message(s) + * + * @param string $mailbox Mailbox name + * @param string|array $messages Message UID(s) + * @param string $flag Flag name + * + * @return bool True on success, False on failure + */ + function unflag($mailbox, $messages, $flag) { + return $this->modFlag($mailbox, $messages, $flag, '-'); + } + + /** + * Changes flag of the message(s) + * + * @param string $mailbox Mailbox name + * @param string|array $messages Message UID(s) + * @param string $flag Flag name + * @param string $mod Modifier [+|-]. Default: "+". + * + * @return bool True on success, False on failure + */ + private function modFlag($mailbox, $messages, $flag, $mod = '+') + { + if ($mod != '+' && $mod != '-') { + $mod = '+'; + } + + if (!$this->select($mailbox)) { + return false; + } + + if (!$this->data['READ-WRITE']) { + $this->setError(self::ERROR_READONLY, "Mailbox is read-only", 'STORE'); + return false; + } + + // Clear internal status cache + if ($flag == 'SEEN') { + unset($this->data['STATUS:'.$mailbox]['UNSEEN']); + } + + $flag = $this->flags[strtoupper($flag)]; + $result = $this->execute('UID STORE', array( + $this->compressMessageSet($messages), $mod . 'FLAGS.SILENT', "($flag)"), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Copies message(s) from one folder to another + * + * @param string|array $messages Message UID(s) + * @param string $from Mailbox name + * @param string $to Destination mailbox name + * + * @return bool True on success, False on failure + */ + function copy($messages, $from, $to) + { + // Clear last COPYUID data + unset($this->data['COPYUID']); + + if (!$this->select($from)) { + return false; + } + + // Clear internal status cache + unset($this->data['STATUS:'.$to]); + + $result = $this->execute('UID COPY', array( + $this->compressMessageSet($messages), $this->escape($to)), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Moves message(s) from one folder to another. + * Original message(s) will be marked as deleted. + * + * @param string|array $messages Message UID(s) + * @param string $from Mailbox name + * @param string $to Destination mailbox name + * + * @return bool True on success, False on failure + */ + function move($messages, $from, $to) + { + if (!$this->select($from)) { + return false; + } + + if (!$this->data['READ-WRITE']) { + $this->setError(self::ERROR_READONLY, "Mailbox is read-only", 'STORE'); + return false; + } + + $r = $this->copy($messages, $from, $to); + + if ($r) { + // Clear internal status cache + unset($this->data['STATUS:'.$from]); + + return $this->flag($from, $messages, 'DELETED'); + } + return $r; + } + + /** + * FETCH command (RFC3501) + * + * @param string $mailbox Mailbox name + * @param mixed $message_set Message(s) sequence identifier(s) or UID(s) + * @param bool $is_uid True if $message_set contains UIDs + * @param array $query_items FETCH command data items + * @param string $mod_seq Modification sequence for CHANGEDSINCE (RFC4551) query + * @param bool $vanished Enables VANISHED parameter (RFC5162) for CHANGEDSINCE query + * + * @return array List of rcube_message_header elements, False on error + * @since 0.6 + */ + function fetch($mailbox, $message_set, $is_uid = false, $query_items = array(), + $mod_seq = null, $vanished = false) + { + if (!$this->select($mailbox)) { + return false; + } + + $message_set = $this->compressMessageSet($message_set); + $result = array(); + + $key = $this->nextTag(); + $request = $key . ($is_uid ? ' UID' : '') . " FETCH $message_set "; + $request .= "(" . implode(' ', $query_items) . ")"; + + if ($mod_seq !== null && $this->hasCapability('CONDSTORE')) { + $request .= " (CHANGEDSINCE $mod_seq" . ($vanished ? " VANISHED" : '') .")"; + } + + if (!$this->putLine($request)) { + $this->setError(self::ERROR_COMMAND, "Unable to send command: $request"); + return false; + } + + do { + $line = $this->readLine(4096); + + if (!$line) + break; + + // Sample reply line: + // * 321 FETCH (UID 2417 RFC822.SIZE 2730 FLAGS (\Seen) + // INTERNALDATE "16-Nov-2008 21:08:46 +0100" BODYSTRUCTURE (...) + // BODY[HEADER.FIELDS ... + + if (preg_match('/^\* ([0-9]+) FETCH/', $line, $m)) { + $id = intval($m[1]); + + $result[$id] = new rcube_message_header; + $result[$id]->id = $id; + $result[$id]->subject = ''; + $result[$id]->messageID = 'mid:' . $id; + + $headers = null; + $lines = array(); + $line = substr($line, strlen($m[0]) + 2); + $ln = 0; + + // get complete entry + while (preg_match('/\{([0-9]+)\}\r\n$/', $line, $m)) { + $bytes = $m[1]; + $out = ''; + + while (strlen($out) < $bytes) { + $out = $this->readBytes($bytes); + if ($out === NULL) + break; + $line .= $out; + } + + $str = $this->readLine(4096); + if ($str === false) + break; + + $line .= $str; + } + + // Tokenize response and assign to object properties + while (list($name, $value) = $this->tokenizeResponse($line, 2)) { + if ($name == 'UID') { + $result[$id]->uid = intval($value); + } + else if ($name == 'RFC822.SIZE') { + $result[$id]->size = intval($value); + } + else if ($name == 'RFC822.TEXT') { + $result[$id]->body = $value; + } + else if ($name == 'INTERNALDATE') { + $result[$id]->internaldate = $value; + $result[$id]->date = $value; + $result[$id]->timestamp = $this->StrToTime($value); + } + else if ($name == 'FLAGS') { + if (!empty($value)) { + foreach ((array)$value as $flag) { + $flag = str_replace(array('$', '\\'), '', $flag); + $flag = strtoupper($flag); + + $result[$id]->flags[$flag] = true; + } + } + } + else if ($name == 'MODSEQ') { + $result[$id]->modseq = $value[0]; + } + else if ($name == 'ENVELOPE') { + $result[$id]->envelope = $value; + } + else if ($name == 'BODYSTRUCTURE' || ($name == 'BODY' && count($value) > 2)) { + if (!is_array($value[0]) && (strtolower($value[0]) == 'message' && strtolower($value[1]) == 'rfc822')) { + $value = array($value); + } + $result[$id]->bodystructure = $value; + } + else if ($name == 'RFC822') { + $result[$id]->body = $value; + } + else if ($name == 'BODY') { + $body = $this->tokenizeResponse($line, 1); + if ($value[0] == 'HEADER.FIELDS') + $headers = $body; + else if (!empty($value)) + $result[$id]->bodypart[$value[0]] = $body; + else + $result[$id]->body = $body; + } + } + + // create array with header field:data + if (!empty($headers)) { + $headers = explode("\n", trim($headers)); + foreach ($headers as $hid => $resln) { + if (ord($resln[0]) <= 32) { + $lines[$ln] .= (empty($lines[$ln]) ? '' : "\n") . trim($resln); + } else { + $lines[++$ln] = trim($resln); + } + } + + while (list($lines_key, $str) = each($lines)) { + list($field, $string) = explode(':', $str, 2); + + $field = strtolower($field); + $string = preg_replace('/\n[\t\s]*/', ' ', trim($string)); + + switch ($field) { + case 'date'; + $result[$id]->date = $string; + $result[$id]->timestamp = $this->strToTime($string); + break; + case 'from': + $result[$id]->from = $string; + break; + case 'to': + $result[$id]->to = preg_replace('/undisclosed-recipients:[;,]*/', '', $string); + break; + case 'subject': + $result[$id]->subject = $string; + break; + case 'reply-to': + $result[$id]->replyto = $string; + break; + case 'cc': + $result[$id]->cc = $string; + break; + case 'bcc': + $result[$id]->bcc = $string; + break; + case 'content-transfer-encoding': + $result[$id]->encoding = $string; + break; + case 'content-type': + $ctype_parts = preg_split('/[; ]+/', $string); + $result[$id]->ctype = strtolower(array_shift($ctype_parts)); + if (preg_match('/charset\s*=\s*"?([a-z0-9\-\.\_]+)"?/i', $string, $regs)) { + $result[$id]->charset = $regs[1]; + } + break; + case 'in-reply-to': + $result[$id]->in_reply_to = str_replace(array("\n", '<', '>'), '', $string); + break; + case 'references': + $result[$id]->references = $string; + break; + case 'return-receipt-to': + case 'disposition-notification-to': + case 'x-confirm-reading-to': + $result[$id]->mdn_to = $string; + break; + case 'message-id': + $result[$id]->messageID = $string; + break; + case 'x-priority': + if (preg_match('/^(\d+)/', $string, $matches)) { + $result[$id]->priority = intval($matches[1]); + } + break; + default: + if (strlen($field) > 2) { + $result[$id]->others[$field] = $string; + } + break; + } + } + } + } + + // VANISHED response (QRESYNC RFC5162) + // Sample: * VANISHED (EARLIER) 300:310,405,411 + + else if (preg_match('/^\* VANISHED [()EARLIER]*/i', $line, $match)) { + $line = substr($line, strlen($match[0])); + $v_data = $this->tokenizeResponse($line, 1); + + $this->data['VANISHED'] = $v_data; + } + + } while (!$this->startsWith($line, $key, true)); + + return $result; + } + + function fetchHeaders($mailbox, $message_set, $is_uid = false, $bodystr = false, $add = '') + { + $query_items = array('UID', 'RFC822.SIZE', 'FLAGS', 'INTERNALDATE'); + if ($bodystr) + $query_items[] = 'BODYSTRUCTURE'; + $query_items[] = 'BODY.PEEK[HEADER.FIELDS (' + . 'DATE FROM TO SUBJECT CONTENT-TYPE CC REPLY-TO LIST-POST DISPOSITION-NOTIFICATION-TO X-PRIORITY' + . ($add ? ' ' . trim($add) : '') + . ')]'; + + $result = $this->fetch($mailbox, $message_set, $is_uid, $query_items); + + return $result; + } + + function fetchHeader($mailbox, $id, $uidfetch=false, $bodystr=false, $add='') + { + $a = $this->fetchHeaders($mailbox, $id, $uidfetch, $bodystr, $add); + if (is_array($a)) { + return array_shift($a); + } + return false; + } + + function sortHeaders($a, $field, $flag) + { + if (empty($field)) { + $field = 'uid'; + } + else { + $field = strtolower($field); + } + + if ($field == 'date' || $field == 'internaldate') { + $field = 'timestamp'; + } + + if (empty($flag)) { + $flag = 'ASC'; + } else { + $flag = strtoupper($flag); + } + + $c = count($a); + if ($c > 0) { + // Strategy: + // First, we'll create an "index" array. + // Then, we'll use sort() on that array, + // and use that to sort the main array. + + // create "index" array + $index = array(); + reset($a); + while (list($key, $val) = each($a)) { + if ($field == 'timestamp') { + $data = $this->strToTime($val->date); + if (!$data) { + $data = $val->timestamp; + } + } else { + $data = $val->$field; + if (is_string($data)) { + $data = str_replace('"', '', $data); + if ($field == 'subject') { + $data = preg_replace('/^(Re: \s*|Fwd:\s*|Fw:\s*)+/i', '', $data); + } + $data = strtoupper($data); + } + } + $index[$key] = $data; + } + + // sort index + if ($flag == 'ASC') { + asort($index); + } else { + arsort($index); + } + + // form new array based on index + $result = array(); + reset($index); + while (list($key, $val) = each($index)) { + $result[$key] = $a[$key]; + } + } + + return $result; + } + + function fetchMIMEHeaders($mailbox, $uid, $parts, $mime=true) + { + if (!$this->select($mailbox)) { + return false; + } + + $result = false; + $parts = (array) $parts; + $key = $this->nextTag(); + $peeks = array(); + $type = $mime ? 'MIME' : 'HEADER'; + + // format request + foreach ($parts as $part) { + $peeks[] = "BODY.PEEK[$part.$type]"; + } + + $request = "$key UID FETCH $uid (" . implode(' ', $peeks) . ')'; + + // send request + if (!$this->putLine($request)) { + $this->setError(self::ERROR_COMMAND, "Unable to send command: $request"); + return false; + } + + do { + $line = $this->readLine(1024); + + if (preg_match('/^\* [0-9]+ FETCH [0-9UID( ]+BODY\[([0-9\.]+)\.'.$type.'\]/', $line, $matches)) { + $idx = $matches[1]; + $headers = ''; + + // get complete entry + if (preg_match('/\{([0-9]+)\}\r\n$/', $line, $m)) { + $bytes = $m[1]; + $out = ''; + + while (strlen($out) < $bytes) { + $out = $this->readBytes($bytes); + if ($out === null) + break; + $headers .= $out; + } + } + + $result[$idx] = trim($headers); + } + } while (!$this->startsWith($line, $key, true)); + + return $result; + } + + function fetchPartHeader($mailbox, $id, $is_uid=false, $part=NULL) + { + $part = empty($part) ? 'HEADER' : $part.'.MIME'; + + return $this->handlePartBody($mailbox, $id, $is_uid, $part); + } + + function handlePartBody($mailbox, $id, $is_uid=false, $part='', $encoding=NULL, $print=NULL, $file=NULL, $formatted=false) + { + if (!$this->select($mailbox)) { + return false; + } + + switch ($encoding) { + case 'base64': + $mode = 1; + break; + case 'quoted-printable': + $mode = 2; + break; + case 'x-uuencode': + case 'x-uue': + case 'uue': + case 'uuencode': + $mode = 3; + break; + default: + $mode = 0; + } + + // Use BINARY extension when possible (and safe) + $binary = $mode && preg_match('/^[0-9.]+$/', $part) && $this->hasCapability('BINARY'); + $fetch_mode = $binary ? 'BINARY' : 'BODY'; + + // format request + $key = $this->nextTag(); + $request = $key . ($is_uid ? ' UID' : '') . " FETCH $id ($fetch_mode.PEEK[$part])"; + + // send request + if (!$this->putLine($request)) { + $this->setError(self::ERROR_COMMAND, "Unable to send command: $request"); + return false; + } + + if ($binary) { + // WARNING: Use $formatting argument with care, this may break binary data stream + $mode = -1; + } + + // receive reply line + do { + $line = rtrim($this->readLine(1024)); + $a = explode(' ', $line); + } while (!($end = $this->startsWith($line, $key, true)) && $a[2] != 'FETCH'); + + $len = strlen($line); + $result = false; + + if ($a[2] != 'FETCH') { + } + // handle empty "* X FETCH ()" response + else if ($line[$len-1] == ')' && $line[$len-2] != '(') { + // one line response, get everything between first and last quotes + if (substr($line, -4, 3) == 'NIL') { + // NIL response + $result = ''; + } else { + $from = strpos($line, '"') + 1; + $to = strrpos($line, '"'); + $len = $to - $from; + $result = substr($line, $from, $len); + } + + if ($mode == 1) { + $result = base64_decode($result); + } + else if ($mode == 2) { + $result = quoted_printable_decode($result); + } + else if ($mode == 3) { + $result = convert_uudecode($result); + } + + } else if ($line[$len-1] == '}') { + // multi-line request, find sizes of content and receive that many bytes + $from = strpos($line, '{') + 1; + $to = strrpos($line, '}'); + $len = $to - $from; + $sizeStr = substr($line, $from, $len); + $bytes = (int)$sizeStr; + $prev = ''; + + while ($bytes > 0) { + $line = $this->readLine(8192); + + if ($line === NULL) { + break; + } + + $len = strlen($line); + + if ($len > $bytes) { + $line = substr($line, 0, $bytes); + $len = strlen($line); + } + $bytes -= $len; + + // BASE64 + if ($mode == 1) { + $line = rtrim($line, "\t\r\n\0\x0B"); + // create chunks with proper length for base64 decoding + $line = $prev.$line; + $length = strlen($line); + if ($length % 4) { + $length = floor($length / 4) * 4; + $prev = substr($line, $length); + $line = substr($line, 0, $length); + } + else + $prev = ''; + $line = base64_decode($line); + // QUOTED-PRINTABLE + } else if ($mode == 2) { + $line = rtrim($line, "\t\r\0\x0B"); + $line = quoted_printable_decode($line); + // UUENCODE + } else if ($mode == 3) { + $line = rtrim($line, "\t\r\n\0\x0B"); + if ($line == 'end' || preg_match('/^begin\s+[0-7]+\s+.+$/', $line)) + continue; + $line = convert_uudecode($line); + // default + } else if ($formatted) { + $line = rtrim($line, "\t\r\n\0\x0B") . "\n"; + } + + if ($file) + fwrite($file, $line); + else if ($print) + echo $line; + else + $result .= $line; + } + } + + // read in anything up until last line + if (!$end) + do { + $line = $this->readLine(1024); + } while (!$this->startsWith($line, $key, true)); + + if ($result !== false) { + if ($file) { + fwrite($file, $result); + } else if ($print) { + echo $result; + } else + return $result; + return true; + } + + return false; + } + + /** + * Handler for IMAP APPEND command + * + * @param string $mailbox Mailbox name + * @param string $message Message content + * @param array $flags Message flags + * @param string $date Message internal date + * + * @return string|bool On success APPENDUID response (if available) or True, False on failure + */ + function append($mailbox, &$message, $flags = array(), $date = null) + { + unset($this->data['APPENDUID']); + + if ($mailbox === null || $mailbox === '') { + return false; + } + + $message = str_replace("\r", '', $message); + $message = str_replace("\n", "\r\n", $message); + + $len = strlen($message); + if (!$len) { + return false; + } + + // build APPEND command + $key = $this->nextTag(); + $request = "$key APPEND " . $this->escape($mailbox) . ' (' . $this->flagsToStr($flags) . ')'; + if (!empty($date)) { + $request .= ' ' . $this->escape($date); + } + $request .= ' {' . $len . ($this->prefs['literal+'] ? '+' : '') . '}'; + + // send APPEND command + if ($this->putLine($request)) { + // Do not wait when LITERAL+ is supported + if (!$this->prefs['literal+']) { + $line = $this->readReply(); + + if ($line[0] != '+') { + $this->parseResult($line, 'APPEND: '); + return false; + } + } + + if (!$this->putLine($message)) { + return false; + } + + do { + $line = $this->readLine(); + } while (!$this->startsWith($line, $key, true, true)); + + // Clear internal status cache + unset($this->data['STATUS:'.$mailbox]); + + if ($this->parseResult($line, 'APPEND: ') != self::ERROR_OK) + return false; + else if (!empty($this->data['APPENDUID'])) + return $this->data['APPENDUID']; + else + return true; + } + else { + $this->setError(self::ERROR_COMMAND, "Unable to send command: $request"); + } + + return false; + } + + /** + * Handler for IMAP APPEND command. + * + * @param string $mailbox Mailbox name + * @param string $path Path to the file with message body + * @param string $headers Message headers + * @param array $flags Message flags + * @param string $date Message internal date + * + * @return string|bool On success APPENDUID response (if available) or True, False on failure + */ + function appendFromFile($mailbox, $path, $headers=null, $flags = array(), $date = null) + { + unset($this->data['APPENDUID']); + + if ($mailbox === null || $mailbox === '') { + return false; + } + + // open message file + $in_fp = false; + if (file_exists(realpath($path))) { + $in_fp = fopen($path, 'r'); + } + + if (!$in_fp) { + $this->setError(self::ERROR_UNKNOWN, "Couldn't open $path for reading"); + return false; + } + + $body_separator = "\r\n\r\n"; + $len = filesize($path); + + if (!$len) { + return false; + } + + if ($headers) { + $headers = preg_replace('/[\r\n]+$/', '', $headers); + $len += strlen($headers) + strlen($body_separator); + } + + // build APPEND command + $key = $this->nextTag(); + $request = "$key APPEND " . $this->escape($mailbox) . ' (' . $this->flagsToStr($flags) . ')'; + if (!empty($date)) { + $request .= ' ' . $this->escape($date); + } + $request .= ' {' . $len . ($this->prefs['literal+'] ? '+' : '') . '}'; + + // send APPEND command + if ($this->putLine($request)) { + // Don't wait when LITERAL+ is supported + if (!$this->prefs['literal+']) { + $line = $this->readReply(); + + if ($line[0] != '+') { + $this->parseResult($line, 'APPEND: '); + return false; + } + } + + // send headers with body separator + if ($headers) { + $this->putLine($headers . $body_separator, false); + } + + // send file + while (!feof($in_fp) && $this->fp) { + $buffer = fgets($in_fp, 4096); + $this->putLine($buffer, false); + } + fclose($in_fp); + + if (!$this->putLine('')) { // \r\n + return false; + } + + // read response + do { + $line = $this->readLine(); + } while (!$this->startsWith($line, $key, true, true)); + + // Clear internal status cache + unset($this->data['STATUS:'.$mailbox]); + + if ($this->parseResult($line, 'APPEND: ') != self::ERROR_OK) + return false; + else if (!empty($this->data['APPENDUID'])) + return $this->data['APPENDUID']; + else + return true; + } + else { + $this->setError(self::ERROR_COMMAND, "Unable to send command: $request"); + } + + return false; + } + + /** + * Returns QUOTA information + * + * @return array Quota information + */ + function getQuota() + { + /* + * GETQUOTAROOT "INBOX" + * QUOTAROOT INBOX user/rchijiiwa1 + * QUOTA user/rchijiiwa1 (STORAGE 654 9765) + * OK Completed + */ + $result = false; + $quota_lines = array(); + $key = $this->nextTag(); + $command = $key . ' GETQUOTAROOT INBOX'; + + // get line(s) containing quota info + if ($this->putLine($command)) { + do { + $line = rtrim($this->readLine(5000)); + if (preg_match('/^\* QUOTA /', $line)) { + $quota_lines[] = $line; + } + } while (!$this->startsWith($line, $key, true, true)); + } + else { + $this->setError(self::ERROR_COMMAND, "Unable to send command: $command"); + } + + // return false if not found, parse if found + $min_free = PHP_INT_MAX; + foreach ($quota_lines as $key => $quota_line) { + $quota_line = str_replace(array('(', ')'), '', $quota_line); + $parts = explode(' ', $quota_line); + $storage_part = array_search('STORAGE', $parts); + + if (!$storage_part) { + continue; + } + + $used = intval($parts[$storage_part+1]); + $total = intval($parts[$storage_part+2]); + $free = $total - $used; + + // return lowest available space from all quotas + if ($free < $min_free) { + $min_free = $free; + $result['used'] = $used; + $result['total'] = $total; + $result['percent'] = min(100, round(($used/max(1,$total))*100)); + $result['free'] = 100 - $result['percent']; + } + } + + return $result; + } + + /** + * Send the SETACL command (RFC4314) + * + * @param string $mailbox Mailbox name + * @param string $user User name + * @param mixed $acl ACL string or array + * + * @return boolean True on success, False on failure + * + * @since 0.5-beta + */ + function setACL($mailbox, $user, $acl) + { + if (is_array($acl)) { + $acl = implode('', $acl); + } + + $result = $this->execute('SETACL', array( + $this->escape($mailbox), $this->escape($user), strtolower($acl)), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Send the DELETEACL command (RFC4314) + * + * @param string $mailbox Mailbox name + * @param string $user User name + * + * @return boolean True on success, False on failure + * + * @since 0.5-beta + */ + function deleteACL($mailbox, $user) + { + $result = $this->execute('DELETEACL', array( + $this->escape($mailbox), $this->escape($user)), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Send the GETACL command (RFC4314) + * + * @param string $mailbox Mailbox name + * + * @return array User-rights array on success, NULL on error + * @since 0.5-beta + */ + function getACL($mailbox) + { + list($code, $response) = $this->execute('GETACL', array($this->escape($mailbox))); + + if ($code == self::ERROR_OK && preg_match('/^\* ACL /i', $response)) { + // Parse server response (remove "* ACL ") + $response = substr($response, 6); + $ret = $this->tokenizeResponse($response); + $mbox = array_shift($ret); + $size = count($ret); + + // Create user-rights hash array + // @TODO: consider implementing fixACL() method according to RFC4314.2.1.1 + // so we could return only standard rights defined in RFC4314, + // excluding 'c' and 'd' defined in RFC2086. + if ($size % 2 == 0) { + for ($i=0; $i<$size; $i++) { + $ret[$ret[$i]] = str_split($ret[++$i]); + unset($ret[$i-1]); + unset($ret[$i]); + } + return $ret; + } + + $this->setError(self::ERROR_COMMAND, "Incomplete ACL response"); + return NULL; + } + + return NULL; + } + + /** + * Send the LISTRIGHTS command (RFC4314) + * + * @param string $mailbox Mailbox name + * @param string $user User name + * + * @return array List of user rights + * @since 0.5-beta + */ + function listRights($mailbox, $user) + { + list($code, $response) = $this->execute('LISTRIGHTS', array( + $this->escape($mailbox), $this->escape($user))); + + if ($code == self::ERROR_OK && preg_match('/^\* LISTRIGHTS /i', $response)) { + // Parse server response (remove "* LISTRIGHTS ") + $response = substr($response, 13); + + $ret_mbox = $this->tokenizeResponse($response, 1); + $ret_user = $this->tokenizeResponse($response, 1); + $granted = $this->tokenizeResponse($response, 1); + $optional = trim($response); + + return array( + 'granted' => str_split($granted), + 'optional' => explode(' ', $optional), + ); + } + + return NULL; + } + + /** + * Send the MYRIGHTS command (RFC4314) + * + * @param string $mailbox Mailbox name + * + * @return array MYRIGHTS response on success, NULL on error + * @since 0.5-beta + */ + function myRights($mailbox) + { + list($code, $response) = $this->execute('MYRIGHTS', array($this->escape($mailbox))); + + if ($code == self::ERROR_OK && preg_match('/^\* MYRIGHTS /i', $response)) { + // Parse server response (remove "* MYRIGHTS ") + $response = substr($response, 11); + + $ret_mbox = $this->tokenizeResponse($response, 1); + $rights = $this->tokenizeResponse($response, 1); + + return str_split($rights); + } + + return NULL; + } + + /** + * Send the SETMETADATA command (RFC5464) + * + * @param string $mailbox Mailbox name + * @param array $entries Entry-value array (use NULL value as NIL) + * + * @return boolean True on success, False on failure + * @since 0.5-beta + */ + function setMetadata($mailbox, $entries) + { + if (!is_array($entries) || empty($entries)) { + $this->setError(self::ERROR_COMMAND, "Wrong argument for SETMETADATA command"); + return false; + } + + foreach ($entries as $name => $value) { + $entries[$name] = $this->escape($name) . ' ' . $this->escape($value); + } + + $entries = implode(' ', $entries); + $result = $this->execute('SETMETADATA', array( + $this->escape($mailbox), '(' . $entries . ')'), + self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Send the SETMETADATA command with NIL values (RFC5464) + * + * @param string $mailbox Mailbox name + * @param array $entries Entry names array + * + * @return boolean True on success, False on failure + * + * @since 0.5-beta + */ + function deleteMetadata($mailbox, $entries) + { + if (!is_array($entries) && !empty($entries)) { + $entries = explode(' ', $entries); + } + + if (empty($entries)) { + $this->setError(self::ERROR_COMMAND, "Wrong argument for SETMETADATA command"); + return false; + } + + foreach ($entries as $entry) { + $data[$entry] = NULL; + } + + return $this->setMetadata($mailbox, $data); + } + + /** + * Send the GETMETADATA command (RFC5464) + * + * @param string $mailbox Mailbox name + * @param array $entries Entries + * @param array $options Command options (with MAXSIZE and DEPTH keys) + * + * @return array GETMETADATA result on success, NULL on error + * + * @since 0.5-beta + */ + function getMetadata($mailbox, $entries, $options=array()) + { + if (!is_array($entries)) { + $entries = array($entries); + } + + // create entries string + foreach ($entries as $idx => $name) { + $entries[$idx] = $this->escape($name); + } + + $optlist = ''; + $entlist = '(' . implode(' ', $entries) . ')'; + + // create options string + if (is_array($options)) { + $options = array_change_key_case($options, CASE_UPPER); + $opts = array(); + + if (!empty($options['MAXSIZE'])) { + $opts[] = 'MAXSIZE '.intval($options['MAXSIZE']); + } + if (!empty($options['DEPTH'])) { + $opts[] = 'DEPTH '.intval($options['DEPTH']); + } + + if ($opts) { + $optlist = '(' . implode(' ', $opts) . ')'; + } + } + + $optlist .= ($optlist ? ' ' : '') . $entlist; + + list($code, $response) = $this->execute('GETMETADATA', array( + $this->escape($mailbox), $optlist)); + + if ($code == self::ERROR_OK) { + $result = array(); + $data = $this->tokenizeResponse($response); + + // The METADATA response can contain multiple entries in a single + // response or multiple responses for each entry or group of entries + if (!empty($data) && ($size = count($data))) { + for ($i=0; $i<$size; $i++) { + if (isset($mbox) && is_array($data[$i])) { + $size_sub = count($data[$i]); + for ($x=0; $x<$size_sub; $x++) { + $result[$mbox][$data[$i][$x]] = $data[$i][++$x]; + } + unset($data[$i]); + } + else if ($data[$i] == '*') { + if ($data[$i+1] == 'METADATA') { + $mbox = $data[$i+2]; + unset($data[$i]); // "*" + unset($data[++$i]); // "METADATA" + unset($data[++$i]); // Mailbox + } + // get rid of other untagged responses + else { + unset($mbox); + unset($data[$i]); + } + } + else if (isset($mbox)) { + $result[$mbox][$data[$i]] = $data[++$i]; + unset($data[$i]); + unset($data[$i-1]); + } + else { + unset($data[$i]); + } + } + } + + return $result; + } + + return NULL; + } + + /** + * Send the SETANNOTATION command (draft-daboo-imap-annotatemore) + * + * @param string $mailbox Mailbox name + * @param array $data Data array where each item is an array with + * three elements: entry name, attribute name, value + * + * @return boolean True on success, False on failure + * @since 0.5-beta + */ + function setAnnotation($mailbox, $data) + { + if (!is_array($data) || empty($data)) { + $this->setError(self::ERROR_COMMAND, "Wrong argument for SETANNOTATION command"); + return false; + } + + foreach ($data as $entry) { + // ANNOTATEMORE drafts before version 08 require quoted parameters + $entries[] = sprintf('%s (%s %s)', $this->escape($entry[0], true), + $this->escape($entry[1], true), $this->escape($entry[2], true)); + } + + $entries = implode(' ', $entries); + $result = $this->execute('SETANNOTATION', array( + $this->escape($mailbox), $entries), self::COMMAND_NORESPONSE); + + return ($result == self::ERROR_OK); + } + + /** + * Send the SETANNOTATION command with NIL values (draft-daboo-imap-annotatemore) + * + * @param string $mailbox Mailbox name + * @param array $data Data array where each item is an array with + * two elements: entry name and attribute name + * + * @return boolean True on success, False on failure + * + * @since 0.5-beta + */ + function deleteAnnotation($mailbox, $data) + { + if (!is_array($data) || empty($data)) { + $this->setError(self::ERROR_COMMAND, "Wrong argument for SETANNOTATION command"); + return false; + } + + return $this->setAnnotation($mailbox, $data); + } + + /** + * Send the GETANNOTATION command (draft-daboo-imap-annotatemore) + * + * @param string $mailbox Mailbox name + * @param array $entries Entries names + * @param array $attribs Attribs names + * + * @return array Annotations result on success, NULL on error + * + * @since 0.5-beta + */ + function getAnnotation($mailbox, $entries, $attribs) + { + if (!is_array($entries)) { + $entries = array($entries); + } + // create entries string + // ANNOTATEMORE drafts before version 08 require quoted parameters + foreach ($entries as $idx => $name) { + $entries[$idx] = $this->escape($name, true); + } + $entries = '(' . implode(' ', $entries) . ')'; + + if (!is_array($attribs)) { + $attribs = array($attribs); + } + // create entries string + foreach ($attribs as $idx => $name) { + $attribs[$idx] = $this->escape($name, true); + } + $attribs = '(' . implode(' ', $attribs) . ')'; + + list($code, $response) = $this->execute('GETANNOTATION', array( + $this->escape($mailbox), $entries, $attribs)); + + if ($code == self::ERROR_OK) { + $result = array(); + $data = $this->tokenizeResponse($response); + + // Here we returns only data compatible with METADATA result format + if (!empty($data) && ($size = count($data))) { + for ($i=0; $i<$size; $i++) { + $entry = $data[$i]; + if (isset($mbox) && is_array($entry)) { + $attribs = $entry; + $entry = $last_entry; + } + else if ($entry == '*') { + if ($data[$i+1] == 'ANNOTATION') { + $mbox = $data[$i+2]; + unset($data[$i]); // "*" + unset($data[++$i]); // "ANNOTATION" + unset($data[++$i]); // Mailbox + } + // get rid of other untagged responses + else { + unset($mbox); + unset($data[$i]); + } + continue; + } + else if (isset($mbox)) { + $attribs = $data[++$i]; + } + else { + unset($data[$i]); + continue; + } + + if (!empty($attribs)) { + for ($x=0, $len=count($attribs); $x<$len;) { + $attr = $attribs[$x++]; + $value = $attribs[$x++]; + if ($attr == 'value.priv') { + $result[$mbox]['/private' . $entry] = $value; + } + else if ($attr == 'value.shared') { + $result[$mbox]['/shared' . $entry] = $value; + } + } + } + $last_entry = $entry; + unset($data[$i]); + } + } + + return $result; + } + + return NULL; + } + + /** + * Returns BODYSTRUCTURE for the specified message. + * + * @param string $mailbox Folder name + * @param int $id Message sequence number or UID + * @param bool $is_uid True if $id is an UID + * + * @return array/bool Body structure array or False on error. + * @since 0.6 + */ + function getStructure($mailbox, $id, $is_uid = false) + { + $result = $this->fetch($mailbox, $id, $is_uid, array('BODYSTRUCTURE')); + if (is_array($result)) { + $result = array_shift($result); + return $result->bodystructure; + } + return false; + } + + /** + * Returns data of a message part according to specified structure. + * + * @param array $structure Message structure (getStructure() result) + * @param string $part Message part identifier + * + * @return array Part data as hash array (type, encoding, charset, size) + */ + static function getStructurePartData($structure, $part) + { + $part_a = self::getStructurePartArray($structure, $part); + $data = array(); + + if (empty($part_a)) { + return $data; + } + + // content-type + if (is_array($part_a[0])) { + $data['type'] = 'multipart'; + } + else { + $data['type'] = strtolower($part_a[0]); + + // encoding + $data['encoding'] = strtolower($part_a[5]); + + // charset + if (is_array($part_a[2])) { + while (list($key, $val) = each($part_a[2])) { + if (strcasecmp($val, 'charset') == 0) { + $data['charset'] = $part_a[2][$key+1]; + break; + } + } + } + } + + // size + $data['size'] = intval($part_a[6]); + + return $data; + } + + static function getStructurePartArray($a, $part) + { + if (!is_array($a)) { + return false; + } + + if (empty($part)) { + return $a; + } + + $ctype = is_string($a[0]) && is_string($a[1]) ? $a[0] . '/' . $a[1] : ''; + + if (strcasecmp($ctype, 'message/rfc822') == 0) { + $a = $a[8]; + } + + if (strpos($part, '.') > 0) { + $orig_part = $part; + $pos = strpos($part, '.'); + $rest = substr($orig_part, $pos+1); + $part = substr($orig_part, 0, $pos); + + return self::getStructurePartArray($a[$part-1], $rest); + } + else if ($part > 0) { + return (is_array($a[$part-1])) ? $a[$part-1] : $a; + } + } + + /** + * Creates next command identifier (tag) + * + * @return string Command identifier + * @since 0.5-beta + */ + function nextTag() + { + $this->cmd_num++; + $this->cmd_tag = sprintf('A%04d', $this->cmd_num); + + return $this->cmd_tag; + } + + /** + * Sends IMAP command and parses result + * + * @param string $command IMAP command + * @param array $arguments Command arguments + * @param int $options Execution options + * + * @return mixed Response code or list of response code and data + * @since 0.5-beta + */ + function execute($command, $arguments=array(), $options=0) + { + $tag = $this->nextTag(); + $query = $tag . ' ' . $command; + $noresp = ($options & self::COMMAND_NORESPONSE); + $response = $noresp ? null : ''; + + if (!empty($arguments)) { + foreach ($arguments as $arg) { + $query .= ' ' . self::r_implode($arg); + } + } + + // Send command + if (!$this->putLineC($query)) { + $this->setError(self::ERROR_COMMAND, "Unable to send command: $query"); + return $noresp ? self::ERROR_COMMAND : array(self::ERROR_COMMAND, ''); + } + + // Parse response + do { + $line = $this->readLine(4096); + if ($response !== null) { + $response .= $line; + } + } while (!$this->startsWith($line, $tag . ' ', true, true)); + + $code = $this->parseResult($line, $command . ': '); + + // Remove last line from response + if ($response) { + $line_len = min(strlen($response), strlen($line) + 2); + $response = substr($response, 0, -$line_len); + } + + // optional CAPABILITY response + if (($options & self::COMMAND_CAPABILITY) && $code == self::ERROR_OK + && preg_match('/\[CAPABILITY ([^]]+)\]/i', $line, $matches) + ) { + $this->parseCapability($matches[1], true); + } + + // return last line only (without command tag, result and response code) + if ($line && ($options & self::COMMAND_LASTLINE)) { + $response = preg_replace("/^$tag (OK|NO|BAD|BYE|PREAUTH)?\s*(\[[a-z-]+\])?\s*/i", '', trim($line)); + } + + return $noresp ? $code : array($code, $response); + } + + /** + * Splits IMAP response into string tokens + * + * @param string &$str The IMAP's server response + * @param int $num Number of tokens to return + * + * @return mixed Tokens array or string if $num=1 + * @since 0.5-beta + */ + static function tokenizeResponse(&$str, $num=0) + { + $result = array(); + + while (!$num || count($result) < $num) { + // remove spaces from the beginning of the string + $str = ltrim($str); + + switch ($str[0]) { + + // String literal + case '{': + if (($epos = strpos($str, "}\r\n", 1)) == false) { + // error + } + if (!is_numeric(($bytes = substr($str, 1, $epos - 1)))) { + // error + } + $result[] = $bytes ? substr($str, $epos + 3, $bytes) : ''; + // Advance the string + $str = substr($str, $epos + 3 + $bytes); + break; + + // Quoted string + case '"': + $len = strlen($str); + + for ($pos=1; $pos<$len; $pos++) { + if ($str[$pos] == '"') { + break; + } + if ($str[$pos] == "\\") { + if ($str[$pos + 1] == '"' || $str[$pos + 1] == "\\") { + $pos++; + } + } + } + if ($str[$pos] != '"') { + // error + } + // we need to strip slashes for a quoted string + $result[] = stripslashes(substr($str, 1, $pos - 1)); + $str = substr($str, $pos + 1); + break; + + // Parenthesized list + case '(': + case '[': + $str = substr($str, 1); + $result[] = self::tokenizeResponse($str); + break; + case ')': + case ']': + $str = substr($str, 1); + return $result; + break; + + // String atom, number, NIL, *, % + default: + // empty string + if ($str === '' || $str === null) { + break 2; + } + + // excluded chars: SP, CTL, ), [, ] + if (preg_match('/^([^\x00-\x20\x29\x5B\x5D\x7F]+)/', $str, $m)) { + $result[] = $m[1] == 'NIL' ? NULL : $m[1]; + $str = substr($str, strlen($m[1])); + } + break; + } + } + + return $num == 1 ? $result[0] : $result; + } + + static function r_implode($element) + { + $string = ''; + + if (is_array($element)) { + reset($element); + while (list($key, $value) = each($element)) { + $string .= ' ' . self::r_implode($value); + } + } + else { + return $element; + } + + return '(' . trim($string) . ')'; + } + + /** + * Converts message identifiers array into sequence-set syntax + * + * @param array $messages Message identifiers + * @param bool $force Forces compression of any size + * + * @return string Compressed sequence-set + */ + static function compressMessageSet($messages, $force=false) + { + // given a comma delimited list of independent mid's, + // compresses by grouping sequences together + + if (!is_array($messages)) { + // if less than 255 bytes long, let's not bother + if (!$force && strlen($messages)<255) { + return $messages; + } + + // see if it's already been compressed + if (strpos($messages, ':') !== false) { + return $messages; + } + + // separate, then sort + $messages = explode(',', $messages); + } + + sort($messages); + + $result = array(); + $start = $prev = $messages[0]; + + foreach ($messages as $id) { + $incr = $id - $prev; + if ($incr > 1) { // found a gap + if ($start == $prev) { + $result[] = $prev; // push single id + } else { + $result[] = $start . ':' . $prev; // push sequence as start_id:end_id + } + $start = $id; // start of new sequence + } + $prev = $id; + } + + // handle the last sequence/id + if ($start == $prev) { + $result[] = $prev; + } else { + $result[] = $start.':'.$prev; + } + + // return as comma separated string + return implode(',', $result); + } + + /** + * Converts message sequence-set into array + * + * @param string $messages Message identifiers + * + * @return array List of message identifiers + */ + static function uncompressMessageSet($messages) + { + if (empty($messages)) { + return array(); + } + + $result = array(); + $messages = explode(',', $messages); + + foreach ($messages as $idx => $part) { + $items = explode(':', $part); + $max = max($items[0], $items[1]); + + for ($x=$items[0]; $x<=$max; $x++) { + $result[] = (int)$x; + } + unset($messages[$idx]); + } + + return $result; + } + + private function _xor($string, $string2) + { + $result = ''; + $size = strlen($string); + + for ($i=0; $i<$size; $i++) { + $result .= chr(ord($string[$i]) ^ ord($string2[$i])); + } + + return $result; + } + + /** + * Converts flags array into string for inclusion in IMAP command + * + * @param array $flags Flags (see self::flags) + * + * @return string Space-separated list of flags + */ + private function flagsToStr($flags) + { + foreach ((array)$flags as $idx => $flag) { + if ($flag = $this->flags[strtoupper($flag)]) { + $flags[$idx] = $flag; + } + } + + return implode(' ', (array)$flags); + } + + /** + * Converts datetime string into unix timestamp + * + * @param string $date Date string + * + * @return int Unix timestamp + */ + static function strToTime($date) + { + // support non-standard "GMTXXXX" literal + $date = preg_replace('/GMT\s*([+-][0-9]+)/', '\\1', $date); + + // if date parsing fails, we have a date in non-rfc format + // remove token from the end and try again + while (($ts = intval(@strtotime($date))) <= 0) { + $d = explode(' ', $date); + array_pop($d); + if (empty($d)) { + break; + } + $date = implode(' ', $d); + } + + return $ts < 0 ? 0 : $ts; + } + + /** + * CAPABILITY response parser + */ + private function parseCapability($str, $trusted=false) + { + $str = preg_replace('/^\* CAPABILITY /i', '', $str); + + $this->capability = explode(' ', strtoupper($str)); + + if (!isset($this->prefs['literal+']) && in_array('LITERAL+', $this->capability)) { + $this->prefs['literal+'] = true; + } + + if ($trusted) { + $this->capability_readed = true; + } + } + + /** + * Escapes a string when it contains special characters (RFC3501) + * + * @param string $string IMAP string + * @param boolean $force_quotes Forces string quoting (for atoms) + * + * @return string String atom, quoted-string or string literal + * @todo lists + */ + static function escape($string, $force_quotes=false) + { + if ($string === null) { + return 'NIL'; + } + + if ($string === '') { + return '""'; + } + + // atom-string (only safe characters) + if (!$force_quotes && !preg_match('/[\x00-\x20\x22\x25\x28-\x2A\x5B-\x5D\x7B\x7D\x80-\xFF]/', $string)) { + return $string; + } + + // quoted-string + if (!preg_match('/[\r\n\x00\x80-\xFF]/', $string)) { + return '"' . addcslashes($string, '\\"') . '"'; + } + + // literal-string + return sprintf("{%d}\r\n%s", strlen($string), $string); + } + + /** + * Set the value of the debugging flag. + * + * @param boolean $debug New value for the debugging flag. + * + * @since 0.5-stable + */ + function setDebug($debug, $handler = null) + { + $this->_debug = $debug; + $this->_debug_handler = $handler; + } + + /** + * Write the given debug text to the current debug output handler. + * + * @param string $message Debug mesage text. + * + * @since 0.5-stable + */ + private function debug($message) + { + if ($this->resourceid) { + $message = sprintf('[%s] %s', $this->resourceid, $message); + } + + if ($this->_debug_handler) { + call_user_func_array($this->_debug_handler, array(&$this, $message)); + } else { + echo "DEBUG: $message\n"; + } + } + +} |