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rcube_imap.inc
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<?php
/*
+-----------------------------------------------------------------------+
| program/include/rcube_imap.inc |
| |
| This file is part of the RoundCube Webmail client |
| Copyright (C) 2005-2006, RoundCube Dev. - Switzerland |
| Licensed under the GNU GPL |
| |
| PURPOSE: |
| IMAP wrapper that implements the Iloha IMAP Library (IIL) |
| See http://ilohamail.org/ for details |
| |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
$Id$
*/
/*
* Obtain classes from the Iloha IMAP library
*/
require_once('lib/imap.inc');
require_once('lib/mime.inc');
/**
* Interface class for accessing an IMAP server
*
* This is a wrapper that implements the Iloha IMAP Library (IIL)
*
* @package Mail
* @author Thomas Bruederli <roundcube@gmail.com>
* @version 1.36
* @link http://ilohamail.org
*/
class rcube_imap
{
var $db;
var $conn;
var $root_ns = '';
var $root_dir = '';
var $mailbox = 'INBOX';
var $list_page = 1;
var $page_size = 10;
var $sort_field = 'date';
var $sort_order = 'DESC';
var $delimiter = NULL;
var $caching_enabled = FALSE;
var $default_folders = array('INBOX');
var $default_folders_lc = array('inbox');
var $cache = array();
var $cache_keys = array();
var $cache_changes = array();
var $uid_id_map = array();
var $msg_headers = array();
var $capabilities = array();
var $skip_deleted = FALSE;
var $search_set = NULL;
var $search_subject = '';
var $search_string = '';
var $search_charset = '';
var $debug_level = 1;
/**
* Object constructor
*
* @param object DB Database connection
*/
function __construct($db_conn)
{
$this->db = $db_conn;
}
/**
* PHP 4 object constructor
*
* @see rcube_imap::__construct
*/
function rcube_imap($db_conn)
{
$this->__construct($db_conn);
}
/**
* Connect to an IMAP server
*
* @param string Host to connect
* @param string Username for IMAP account
* @param string Password for IMAP account
* @param number Port to connect to
* @param boolean Use SSL connection
* @return boolean TRUE on success, FALSE on failure
* @access public
*/
function connect($host, $user, $pass, $port=143, $use_ssl=FALSE)
{
global $ICL_SSL, $ICL_PORT, $IMAP_USE_INTERNAL_DATE;
// check for Open-SSL support in PHP build
if ($use_ssl && in_array('openssl', get_loaded_extensions()))
$ICL_SSL = TRUE;
else if ($use_ssl)
{
raise_error(array('code' => 403, 'type' => 'imap', 'file' => __FILE__,
'message' => 'Open SSL not available;'), TRUE, FALSE);
$port = 143;
}
$ICL_PORT = $port;
$IMAP_USE_INTERNAL_DATE = false;
$this->conn = iil_Connect($host, $user, $pass, array('imap' => 'check'));
$this->host = $host;
$this->user = $user;
$this->pass = $pass;
$this->port = $port;
$this->ssl = $use_ssl;
// print trace mesages
if ($this->conn && ($this->debug_level & 8))
console($this->conn->message);
// write error log
else if (!$this->conn && $GLOBALS['iil_error'])
{
raise_error(array('code' => 403,
'type' => 'imap',
'message' => $GLOBALS['iil_error']), TRUE, FALSE);
}
// get server properties
if ($this->conn)
{
$this->_parse_capability($this->conn->capability);
if (!empty($this->conn->delimiter))
$this->delimiter = $this->conn->delimiter;
if (!empty($this->conn->rootdir))
{
$this->set_rootdir($this->conn->rootdir);
$this->root_ns = ereg_replace('[\.\/]$', '', $this->conn->rootdir);
}
}
return $this->conn ? TRUE : FALSE;
}
/**
* Close IMAP connection
* Usually done on script shutdown
*
* @access public
*/
function close()
{
if ($this->conn)
iil_Close($this->conn);
}
/**
* Close IMAP connection and re-connect
* This is used to avoid some strange socket errors when talking to Courier IMAP
*
* @access public
*/
function reconnect()
{
$this->close();
$this->connect($this->host, $this->user, $this->pass, $this->port, $this->ssl);
}
/**
* Set a root folder for the IMAP connection.
*
* Only folders within this root folder will be displayed
* and all folder paths will be translated using this folder name
*
* @param string Root folder
* @access public
*/
function set_rootdir($root)
{
if (ereg('[\.\/]$', $root)) //(substr($root, -1, 1)==='/')
$root = substr($root, 0, -1);
$this->root_dir = $root;
if (empty($this->delimiter))
$this->get_hierarchy_delimiter();
}
/**
* This list of folders will be listed above all other folders
*
* @param array Indexed list of folder names
* @access public
*/
function set_default_mailboxes($arr)
{
if (is_array($arr))
{
$this->default_folders = $arr;
$this->default_folders_lc = array();
// add inbox if not included
if (!in_array_nocase('INBOX', $this->default_folders))
array_unshift($this->default_folders, 'INBOX');
// create a second list with lower cased names
foreach ($this->default_folders as $mbox)
$this->default_folders_lc[] = strtolower($mbox);
}
}
/**
* Set internal mailbox reference.
*
* All operations will be perfomed on this mailbox/folder
*
* @param string Mailbox/Folder name
* @access public
*/
function set_mailbox($new_mbox)
{
$mailbox = $this->_mod_mailbox($new_mbox);
if ($this->mailbox == $mailbox)
return;
$this->mailbox = $mailbox;
// clear messagecount cache for this mailbox
$this->_clear_messagecount($mailbox);
}
/**
* Set internal list page
*
* @param number Page number to list
* @access public
*/
function set_page($page)
{
$this->list_page = (int)$page;
}
/**
* Set internal page size
*
* @param number Number of messages to display on one page
* @access public
*/
function set_pagesize($size)
{
$this->page_size = (int)$size;
}
/**
* Save a set of message ids for future message listing methods
*
* @param array List of IMAP fields to search in
* @param string Search string
* @param array List of message ids or NULL if empty
*/
function set_search_set($subject, $str=null, $msgs=null, $charset=null)
{
if (is_array($subject) && $str == null && $msgs == null)
list($subject, $str, $msgs, $charset) = $subject;
if ($msgs != null && !is_array($msgs))
$msgs = split(',', $msgs);
$this->search_subject = $subject;
$this->search_string = $str;
$this->search_set = is_array($msgs) ? $msgs : NULL;
$this->search_charset = $charset;
}
/**
* Return the saved search set as hash array
* @return array Search set
*/
function get_search_set()
{
return array($this->search_subject, $this->search_string, $this->search_set, $this->search_charset);
}
/**
* Returns the currently used mailbox name
*
* @return string Name of the mailbox/folder
* @access public
*/
function get_mailbox_name()
{
return $this->conn ? $this->_mod_mailbox($this->mailbox, 'out') : '';
}
/**
* Returns the IMAP server's capability
*
* @param string Capability name
* @return mixed Capability value or TRUE if supported, FALSE if not
* @access public
*/
function get_capability($cap)
{
$cap = strtoupper($cap);
return $this->capabilities[$cap];
}
/**
* Returns the delimiter that is used by the IMAP server for folder separation
*
* @return string Delimiter string
* @access public
*/
function get_hierarchy_delimiter()
{
if ($this->conn && empty($this->delimiter))
$this->delimiter = iil_C_GetHierarchyDelimiter($this->conn);
if (empty($this->delimiter))
$this->delimiter = '/';
return $this->delimiter;
}
/**
* Public method for mailbox listing.
*
* Converts mailbox name with root dir first
*
* @param string Optional root folder
* @param string Optional filter for mailbox listing
* @return array List of mailboxes/folders
* @access public
*/
function list_mailboxes($root='', $filter='*')
{
$a_out = array();
$a_mboxes = $this->_list_mailboxes($root, $filter);
foreach ($a_mboxes as $mbox_row)
{
$name = $this->_mod_mailbox($mbox_row, 'out');
if (strlen($name))
$a_out[] = $name;
}
// INBOX should always be available
if (!in_array_nocase('INBOX', $a_out))
array_unshift($a_out, 'INBOX');
// sort mailboxes
$a_out = $this->_sort_mailbox_list($a_out);
return $a_out;
}
/**
* Private method for mailbox listing
*
* @return array List of mailboxes/folders
* @see rcube_imap::list_mailboxes()
* @access private
*/
function _list_mailboxes($root='', $filter='*')
{
$a_defaults = $a_out = array();
// get cached folder list
$a_mboxes = $this->get_cache('mailboxes');
if (is_array($a_mboxes))
return $a_mboxes;
// retrieve list of folders from IMAP server
$a_folders = iil_C_ListSubscribed($this->conn, $this->_mod_mailbox($root), $filter);
if (!is_array($a_folders) || !sizeof($a_folders))
$a_folders = array();
// write mailboxlist to cache
$this->update_cache('mailboxes', $a_folders);
return $a_folders;
}
/**
* Get message count for a specific mailbox
*
* @param string Mailbox/folder name
* @param string Mode for count [ALL|UNSEEN|RECENT]
* @param boolean Force reading from server and update cache
* @return int Number of messages
* @access public
*/
function messagecount($mbox_name='', $mode='ALL', $force=FALSE)
{
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
return $this->_messagecount($mailbox, $mode, $force);
}
/**
* Private method for getting nr of messages
*
* @access private
* @see rcube_imap::messagecount()
*/
function _messagecount($mailbox='', $mode='ALL', $force=FALSE)
{
$a_mailbox_cache = FALSE;
$mode = strtoupper($mode);
if (empty($mailbox))
$mailbox = $this->mailbox;
// count search set
if ($this->search_set && $mailbox == $this->mailbox && $mode == 'ALL')
return count($this->search_set);
$a_mailbox_cache = $this->get_cache('messagecount');
// return cached value
if (!$force && is_array($a_mailbox_cache[$mailbox]) && isset($a_mailbox_cache[$mailbox][$mode]))
return $a_mailbox_cache[$mailbox][$mode];
// RECENT count is fetched abit different
if ($mode == 'RECENT')
$count = iil_C_CheckForRecent($this->conn, $mailbox);
// use SEARCH for message counting
else if ($this->skip_deleted)
{
$search_str = "ALL UNDELETED";
// get message count and store in cache
if ($mode == 'UNSEEN')
$search_str .= " UNSEEN";
// get message count using SEARCH
// not very performant but more precise (using UNDELETED)
$count = 0;
$index = $this->_search_index($mailbox, $search_str);
if (is_array($index))
{
$str = implode(",", $index);
if (!empty($str))
$count = count($index);
}
}
else
{
if ($mode == 'UNSEEN')
$count = iil_C_CountUnseen($this->conn, $mailbox);
else
$count = iil_C_CountMessages($this->conn, $mailbox);
}
if (!is_array($a_mailbox_cache[$mailbox]))
$a_mailbox_cache[$mailbox] = array();
$a_mailbox_cache[$mailbox][$mode] = (int)$count;
// write back to cache
$this->update_cache('messagecount', $a_mailbox_cache);
return (int)$count;
}
/**
* Public method for listing headers
* convert mailbox name with root dir first
*
* @param string Mailbox/folder name
* @param int Current page to list
* @param string Header field to sort by
* @param string Sort order [ASC|DESC]
* @return array Indexed array with message header objects
* @access public
*/
function list_headers($mbox_name='', $page=NULL, $sort_field=NULL, $sort_order=NULL)
{
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
return $this->_list_headers($mailbox, $page, $sort_field, $sort_order);
}
/**
* Private method for listing message headers
*
* @access private
* @see rcube_imap::list_headers
*/
function _list_headers($mailbox='', $page=NULL, $sort_field=NULL, $sort_order=NULL, $recursive=FALSE)
{
if (!strlen($mailbox))
return array();
// use saved message set
if ($this->search_set && $mailbox == $this->mailbox)
return $this->_list_header_set($mailbox, $this->search_set, $page, $sort_field, $sort_order);
if ($sort_field!=NULL)
$this->sort_field = $sort_field;
if ($sort_order!=NULL)
$this->sort_order = strtoupper($sort_order);
$max = $this->_messagecount($mailbox);
$start_msg = ($this->list_page-1) * $this->page_size;
list($begin, $end) = $this->_get_message_range($max, $page);
// mailbox is empty
if ($begin >= $end)
return array();
$headers_sorted = FALSE;
$cache_key = $mailbox.'.msg';
$cache_status = $this->check_cache_status($mailbox, $cache_key);
// cache is OK, we can get all messages from local cache
if ($cache_status>0)
{
$a_msg_headers = $this->get_message_cache($cache_key, $start_msg, $start_msg+$this->page_size, $this->sort_field, $this->sort_order);
$headers_sorted = TRUE;
}
// cache is dirty, sync it
else if ($this->caching_enabled && $cache_status==-1 && !$recursive)
{
$this->sync_header_index($mailbox);
return $this->_list_headers($mailbox, $page, $this->sort_field, $this->sort_order, TRUE);
}
else
{
// retrieve headers from IMAP
if ($this->get_capability('sort') && ($msg_index = iil_C_Sort($this->conn, $mailbox, $this->sort_field, $this->skip_deleted ? 'UNDELETED' : '')))
{
$msgs = $msg_index[$begin];
for ($i=$begin+1; $i < $end; $i++)
$msgs = $msgs.','.$msg_index[$i];
}
else
{
$msgs = sprintf("%d:%d", $begin+1, $end);
$i = 0;
for ($msg_seqnum = $begin; $msg_seqnum <= $end; $msg_seqnum++)
$msg_index[$i++] = $msg_seqnum;
}
// use this class for message sorting
$sorter = new rcube_header_sorter();
$sorter->set_sequence_numbers($msg_index);
// fetch reuested headers from server
$a_msg_headers = array();
$deleted_count = $this->_fetch_headers($mailbox, $msgs, $a_msg_headers, $cache_key);
// delete cached messages with a higher index than $max+1
// Changed $max to $max+1 to fix this bug : #1484295
$this->clear_message_cache($cache_key, $max + 1);
// kick child process to sync cache
// ...
}
// return empty array if no messages found
if (!is_array($a_msg_headers) || empty($a_msg_headers))
return array();
// if not already sorted
if (!$headers_sorted)
{
$sorter->sort_headers($a_msg_headers);
if ($this->sort_order == 'DESC')
$a_msg_headers = array_reverse($a_msg_headers);
}
return array_values($a_msg_headers);
}
/**
* Public method for listing a specific set of headers
* convert mailbox name with root dir first
*
* @param string Mailbox/folder name
* @param array List of message ids to list
* @param int Current page to list
* @param string Header field to sort by
* @param string Sort order [ASC|DESC]
* @return array Indexed array with message header objects
* @access public
*/
function list_header_set($mbox_name='', $msgs, $page=NULL, $sort_field=NULL, $sort_order=NULL)
{
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
return $this->_list_header_set($mailbox, $msgs, $page, $sort_field, $sort_order);
}
/**
* Private method for listing a set of message headers
*
* @access private
* @see rcube_imap::list_header_set()
*/
function _list_header_set($mailbox, $msgs, $page=NULL, $sort_field=NULL, $sort_order=NULL)
{
// also accept a comma-separated list of message ids
if (is_string($msgs))
$msgs = split(',', $msgs);
if (!strlen($mailbox) || empty($msgs))
return array();
if ($sort_field!=NULL)
$this->sort_field = $sort_field;
if ($sort_order!=NULL)
$this->sort_order = strtoupper($sort_order);
$max = count($msgs);
$start_msg = ($this->list_page-1) * $this->page_size;
// fetch reuested headers from server
$a_msg_headers = array();
$this->_fetch_headers($mailbox, join(',', $msgs), $a_msg_headers, NULL);
// return empty array if no messages found
if (!is_array($a_msg_headers) || empty($a_msg_headers))
return array();
// if not already sorted
$a_msg_headers = iil_SortHeaders($a_msg_headers, $this->sort_field, $this->sort_order);
// only return the requested part of the set
return array_slice(array_values($a_msg_headers), $start_msg, min($max-$start_msg, $this->page_size));
}
/**
* Helper function to get first and last index of the requested set
*
* @param int message count
* @param mixed page number to show, or string 'all'
* @return array array with two values: first index, last index
* @access private
*/
function _get_message_range($max, $page)
{
$start_msg = ($this->list_page-1) * $this->page_size;
if ($page=='all')
{
$begin = 0;
$end = $max;
}
else if ($this->sort_order=='DESC')
{
$begin = $max - $this->page_size - $start_msg;
$end = $max - $start_msg;
}
else
{
$begin = $start_msg;
$end = $start_msg + $this->page_size;
}
if ($begin < 0) $begin = 0;
if ($end < 0) $end = $max;
if ($end > $max) $end = $max;
return array($begin, $end);
}
/**
* Fetches message headers
* Used for loop
*
* @param string Mailbox name
* @param string Message index to fetch
* @param array Reference to message headers array
* @param array Array with cache index
* @return int Number of deleted messages
* @access private
*/
function _fetch_headers($mailbox, $msgs, &$a_msg_headers, $cache_key)
{
// cache is incomplete
$cache_index = $this->get_message_cache_index($cache_key);
// fetch reuested headers from server
$a_header_index = iil_C_FetchHeaders($this->conn, $mailbox, $msgs);
$deleted_count = 0;
if (!empty($a_header_index))
{
foreach ($a_header_index as $i => $headers)
{
if ($headers->deleted && $this->skip_deleted)
{
// delete from cache
if ($cache_index[$headers->id] && $cache_index[$headers->id] == $headers->uid)
$this->remove_message_cache($cache_key, $headers->id);
$deleted_count++;
continue;
}
// add message to cache
if ($this->caching_enabled && $cache_index[$headers->id] != $headers->uid)
$this->add_message_cache($cache_key, $headers->id, $headers);
$a_msg_headers[$headers->uid] = $headers;
}
}
return $deleted_count;
}
/**
* Return sorted array of message UIDs
*
* @param string Mailbox to get index from
* @param string Sort column
* @param string Sort order [ASC, DESC]
* @return array Indexed array with message ids
*/
function message_index($mbox_name='', $sort_field=NULL, $sort_order=NULL)
{
if ($sort_field!=NULL)
$this->sort_field = $sort_field;
if ($sort_order!=NULL)
$this->sort_order = strtoupper($sort_order);
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
$key = "$mbox:".$this->sort_field.":".$this->sort_order.".msgi";
// have stored it in RAM
if (isset($this->cache[$key]))
return $this->cache[$key];
// check local cache
$cache_key = $mailbox.'.msg';
$cache_status = $this->check_cache_status($mailbox, $cache_key);
// cache is OK
if ($cache_status>0)
{
$a_index = $this->get_message_cache_index($cache_key, TRUE, $this->sort_field, $this->sort_order);
return array_values($a_index);
}
// fetch complete message index
$msg_count = $this->_messagecount($mailbox);
if ($this->get_capability('sort') && ($a_index = iil_C_Sort($this->conn, $mailbox, $this->sort_field, '', TRUE)))
{
if ($this->sort_order == 'DESC')
$a_index = array_reverse($a_index);
$this->cache[$key] = $a_index;
}
else
{
$a_index = iil_C_FetchHeaderIndex($this->conn, $mailbox, "1:$msg_count", $this->sort_field);
$a_uids = iil_C_FetchUIDs($this->conn, $mailbox);
if ($this->sort_order=="ASC")
asort($a_index);
else if ($this->sort_order=="DESC")
arsort($a_index);
$i = 0;
$this->cache[$key] = array();
foreach ($a_index as $index => $value)
$this->cache[$key][$i++] = $a_uids[$index];
}
return $this->cache[$key];
}
/**
* @access private
*/
function sync_header_index($mailbox)
{
$cache_key = $mailbox.'.msg';
$cache_index = $this->get_message_cache_index($cache_key);
$msg_count = $this->_messagecount($mailbox);
// fetch complete message index
$a_message_index = iil_C_FetchHeaderIndex($this->conn, $mailbox, "1:$msg_count", 'UID');
foreach ($a_message_index as $id => $uid)
{
// message in cache at correct position
if ($cache_index[$id] == $uid)
{
unset($cache_index[$id]);
continue;
}
// message in cache but in wrong position
if (in_array((string)$uid, $cache_index, TRUE))
{
unset($cache_index[$id]);
}
// other message at this position
if (isset($cache_index[$id]))
{
$this->remove_message_cache($cache_key, $id);
unset($cache_index[$id]);
}
// fetch complete headers and add to cache
$headers = iil_C_FetchHeader($this->conn, $mailbox, $id);
$this->add_message_cache($cache_key, $headers->id, $headers);
}
// those ids that are still in cache_index have been deleted
if (!empty($cache_index))
{
foreach ($cache_index as $id => $uid)
$this->remove_message_cache($cache_key, $id);
}
}
/**
* Invoke search request to IMAP server
*
* @param string mailbox name to search in
* @param string search criteria (ALL, TO, FROM, SUBJECT, etc)
* @param string search string
* @return array search results as list of message ids
* @access public
*/
function search($mbox_name='', $criteria='ALL', $str=NULL, $charset=NULL)
{
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
// have an array of criterias => execute multiple searches
if (is_array($criteria) && $str)
{
$results = array();
foreach ($criteria as $crit)
if ($search_result = $this->search($mbox_name, $crit, $str, $charset))
$results = array_merge($results, $search_result);
$results = array_unique($results);
$this->set_search_set($criteria, $str, $results, $charset);
return $results;
}
else if ($str && $criteria)
{
$search = (!empty($charset) ? "CHARSET $charset " : '') . sprintf("%s {%d}\r\n%s", $criteria, strlen($str), $str);
$results = $this->_search_index($mailbox, $search);
// try search with ISO charset (should be supported by server)
if (empty($results) && !empty($charset) && $charset!='ISO-8859-1')
$results = $this->search($mbox_name, $criteria, rcube_charset_convert($str, $charset, 'ISO-8859-1'), 'ISO-8859-1');
$this->set_search_set($criteria, $str, $results, $charset);
return $results;
}
else
return $this->_search_index($mailbox, $criteria);
}
/**
* Private search method
*
* @return array search results as list of message ids
* @access private
* @see rcube_imap::search()
*/
function _search_index($mailbox, $criteria='ALL')
{
$a_messages = iil_C_Search($this->conn, $mailbox, $criteria);
// clean message list (there might be some empty entries)
if (is_array($a_messages))
{
foreach ($a_messages as $i => $val)
if (empty($val))
unset($a_messages[$i]);
}
return $a_messages;
}
/**
* Refresh saved search set
*
* @return array Current search set
*/
function refresh_search()
{
if (!empty($this->search_subject) && !empty($this->search_string))
$this->search_set = $this->search('', $this->search_subject, $this->search_string, $this->search_charset);
return $this->get_search_set();
}
/**
* Return message headers object of a specific message
*
* @param int Message ID
* @param string Mailbox to read from
* @param boolean True if $id is the message UID
* @return object Message headers representation
*/
function get_headers($id, $mbox_name=NULL, $is_uid=TRUE)
{
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
$uid = $is_uid ? $id : $this->_id2uid($id);
// get cached headers
if ($uid && ($headers = &$this->get_cached_message($mailbox.'.msg', $uid)))
return $headers;
$headers = iil_C_FetchHeader($this->conn, $mailbox, $id, $is_uid);
// write headers cache
if ($headers)
{
if ($is_uid)
$this->uid_id_map[$mbox_name][$uid] = $headers->id;
$this->add_message_cache($mailbox.'.msg', $headers->id, $headers);
}
return $headers;
}
/**
* Fetch body structure from the IMAP server and build
* an object structure similar to the one generated by PEAR::Mail_mimeDecode
*
* @param int Message UID to fetch
* @return object stdClass Message part tree or False on failure
*/
function &get_structure($uid)
{
$cache_key = $this->mailbox.'.msg';
$headers = &$this->get_cached_message($cache_key, $uid, true);
// return cached message structure
if (is_object($headers) && is_object($headers->structure))
return $headers->structure;
// resolve message sequence number
if (!($msg_id = $this->_uid2id($uid)))
return FALSE;
$structure_str = iil_C_FetchStructureString($this->conn, $this->mailbox, $msg_id);
$structure = iml_GetRawStructureArray($structure_str);
$struct = false;
// parse structure and add headers
if (!empty($structure))
{
$this->_msg_id = $msg_id;
$headers = $this->get_headers($msg_id, NULL, FALSE);
$struct = &$this->_structure_part($structure);
$struct->headers = get_object_vars($headers);
// don't trust given content-type
if (empty($struct->parts) && !empty($struct->headers['ctype']))
{
$struct->mime_id = '1';
$struct->mimetype = strtolower($struct->headers['ctype']);
list($struct->ctype_primary, $struct->ctype_secondary) = explode('/', $struct->mimetype);
}
// write structure to cache
if ($this->caching_enabled)
$this->add_message_cache($cache_key, $msg_id, $headers, $struct);
}
return $struct;
}
/**
* Build message part object
*
* @access private
*/
function &_structure_part($part, $count=0, $parent='')
{
$struct = new rcube_message_part;
$struct->mime_id = empty($parent) ? (string)$count : "$parent.$count";
// multipart
if (is_array($part[0]))
{
$struct->ctype_primary = 'multipart';
// find first non-array entry
for ($i=1; count($part); $i++)
if (!is_array($part[$i]))
{
$struct->ctype_secondary = strtolower($part[$i]);
break;
}
$struct->mimetype = 'multipart/'.$struct->ctype_secondary;
$struct->parts = array();
for ($i=0, $count=0; $i<count($part); $i++)
if (is_array($part[$i]) && count($part[$i]) > 5)
$struct->parts[] = $this->_structure_part($part[$i], ++$count, $struct->mime_id);
return $struct;
}
// regular part
$struct->ctype_primary = strtolower($part[0]);
$struct->ctype_secondary = strtolower($part[1]);
$struct->mimetype = $struct->ctype_primary.'/'.$struct->ctype_secondary;
// read content type parameters
if (is_array($part[2]))
{
$struct->ctype_parameters = array();
for ($i=0; $i<count($part[2]); $i+=2)
$struct->ctype_parameters[strtolower($part[2][$i])] = $part[2][$i+1];
if (isset($struct->ctype_parameters['charset']))
$struct->charset = $struct->ctype_parameters['charset'];
}
// read content encoding
if (!empty($part[5]) && $part[5]!='NIL')
{
$struct->encoding = strtolower($part[5]);
$struct->headers['content-transfer-encoding'] = $struct->encoding;
}
// get part size
if (!empty($part[6]) && $part[6]!='NIL')
$struct->size = intval($part[6]);
// read part disposition
$di = count($part) - 2;
if ((is_array($part[$di]) && count($part[$di]) == 2 && is_array($part[$di][1])) ||
(is_array($part[--$di]) && count($part[$di]) == 2))
{
$struct->disposition = strtolower($part[$di][0]);
if (is_array($part[$di][1]))
for ($n=0; $n<count($part[$di][1]); $n+=2)
$struct->d_parameters[strtolower($part[$di][1][$n])] = $part[$di][1][$n+1];
}
// get child parts
if (is_array($part[8]) && $di != 8)
{
$struct->parts = array();
for ($i=0, $count=0; $i<count($part[8]); $i++)
if (is_array($part[8][$i]) && count($part[8][$i]) > 5)
$struct->parts[] = $this->_structure_part($part[8][$i], ++$count, $struct->mime_id);
}
// get part ID
if (!empty($part[3]) && $part[3]!='NIL')
{
$struct->content_id = $part[3];
$struct->headers['content-id'] = $part[3];
if (empty($struct->disposition))
$struct->disposition = 'inline';
}
// fetch message headers if message/rfc822
if ($struct->ctype_primary=='message')
{
$headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
$struct->headers = $this->_parse_headers($headers);
if (is_array($part[8]) && empty($struct->parts))
$struct->parts[] = $this->_structure_part($part[8], ++$count, $struct->mime_id);
}
// normalize filename property
if (!empty($struct->d_parameters['filename']))
$struct->filename = $this->decode_mime_string($struct->d_parameters['filename']);
else if (!empty($struct->ctype_parameters['name']))
$struct->filename = $this->decode_mime_string($struct->ctype_parameters['name']);
else if (!empty($struct->headers['content-description']))
$struct->filename = $this->decode_mime_string($struct->headers['content-description']);
return $struct;
}
/**
* Return a flat array with references to all parts, indexed by part numbers
*
* @param object rcube_message_part Message body structure
* @return Array with part number -> object pairs
*/
function get_mime_numbers(&$structure)
{
$a_parts = array();
$this->_get_part_numbers($structure, $a_parts);
return $a_parts;
}
/**
* Helper method for recursive calls
*
* @access private
*/
function _get_part_numbers(&$part, &$a_parts)
{
if ($part->mime_id)
$a_parts[$part->mime_id] = &$part;
if (is_array($part->parts))
for ($i=0; $i<count($part->parts); $i++)
$this->_get_part_numbers($part->parts[$i], $a_parts);
}
/**
* Fetch message body of a specific message from the server
*
* @param int Message UID
* @param string Part number
* @param object rcube_message_part Part object created by get_structure()
* @param mixed True to print part, ressource to write part contents in
* @return string Message/part body if not printed
*/
function &get_message_part($uid, $part=1, $o_part=NULL, $print=NULL)
{
if (!($msg_id = $this->_uid2id($uid)))
return FALSE;
// get part encoding if not provided
if (!is_object($o_part))
{
$structure_str = iil_C_FetchStructureString($this->conn, $this->mailbox, $msg_id);
$structure = iml_GetRawStructureArray($structure_str);
$part_type = iml_GetPartTypeCode($structure, $part);
$o_part = new rcube_message_part;
$o_part->ctype_primary = $part_type==0 ? 'text' : ($part_type==2 ? 'message' : 'other');
$o_part->encoding = strtolower(iml_GetPartEncodingString($structure, $part));
$o_part->charset = iml_GetPartCharset($structure, $part);
}
// TODO: Add caching for message parts
if ($print)
{
iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, $part, ($o_part->encoding=='base64'?3:2));
$body = TRUE;
}
else
{
$body = iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, $part, 1);
// decode part body
if ($o_part->encoding=='base64' || $o_part->encoding=='quoted-printable')
$body = $this->mime_decode($body, $o_part->encoding);
// convert charset (if text or message part)
if ($o_part->ctype_primary=='text' || $o_part->ctype_primary=='message')
{
// assume ISO-8859-1 if no charset specified
if (empty($o_part->charset))
$o_part->charset = 'ISO-8859-1';
$body = rcube_charset_convert($body, $o_part->charset);
}
}
return $body;
}
/**
* Fetch message body of a specific message from the server
*
* @param int Message UID
* @return string Message/part body
* @see rcube_imap::get_message_part()
*/
function &get_body($uid, $part=1)
{
return $this->get_message_part($uid, $part);
}
/**
* Returns the whole message source as string
*
* @param int Message UID
* @return string Message source string
*/
function &get_raw_body($uid)
{
if (!($msg_id = $this->_uid2id($uid)))
return FALSE;
$body = iil_C_FetchPartHeader($this->conn, $this->mailbox, $msg_id, NULL);
$body .= iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, NULL, 1);
return $body;
}
/**
* Sends the whole message source to stdout
*
* @param int Message UID
*/
function print_raw_body($uid)
{
if (!($msg_id = $this->_uid2id($uid)))
return FALSE;
print iil_C_FetchPartHeader($this->conn, $this->mailbox, $msg_id, NULL);
flush();
iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, NULL, 2);
}
/**
* Set message flag to one or several messages
*
* @param mixed Message UIDs as array or as comma-separated string
* @param string Flag to set: SEEN, UNDELETED, DELETED, RECENT, ANSWERED, DRAFT
* @return boolean True on success, False on failure
*/
function set_flag($uids, $flag)
{
$flag = strtoupper($flag);
$msg_ids = array();
if (!is_array($uids))
$uids = explode(',',$uids);
foreach ($uids as $uid) {
$msg_ids[$uid] = $this->_uid2id($uid);
}
if ($flag=='UNDELETED')
$result = iil_C_Undelete($this->conn, $this->mailbox, join(',', array_values($msg_ids)));
else if ($flag=='UNSEEN')
$result = iil_C_Unseen($this->conn, $this->mailbox, join(',', array_values($msg_ids)));
else
$result = iil_C_Flag($this->conn, $this->mailbox, join(',', array_values($msg_ids)), $flag);
// reload message headers if cached
$cache_key = $this->mailbox.'.msg';
if ($this->caching_enabled)
{
foreach ($msg_ids as $uid => $id)
{
if ($cached_headers = $this->get_cached_message($cache_key, $uid))
{
$this->remove_message_cache($cache_key, $id);
//$this->get_headers($uid);
}
}
// close and re-open connection
// this prevents connection problems with Courier
$this->reconnect();
}
// set nr of messages that were flaged
$count = count($msg_ids);
// clear message count cache
if ($result && $flag=='SEEN')
$this->_set_messagecount($this->mailbox, 'UNSEEN', $count*(-1));
else if ($result && $flag=='UNSEEN')
$this->_set_messagecount($this->mailbox, 'UNSEEN', $count);
else if ($result && $flag=='DELETED')
$this->_set_messagecount($this->mailbox, 'ALL', $count*(-1));
return $result;
}
/**
* Append a mail message (source) to a specific mailbox
*
* @param string Target mailbox
* @param string Message source
* @return boolean True on success, False on error
*/
function save_message($mbox_name, &$message)
{
$mbox_name = stripslashes($mbox_name);
$mailbox = $this->_mod_mailbox($mbox_name);
// make sure mailbox exists
if (in_array($mailbox, $this->_list_mailboxes()))
$saved = iil_C_Append($this->conn, $mailbox, $message);
if ($saved)
{
// increase messagecount of the target mailbox
$this->_set_messagecount($mailbox, 'ALL', 1);
}
return $saved;
}
/**
* Move a message from one mailbox to another
*
* @param string List of UIDs to move, separated by comma
* @param string Target mailbox
* @param string Source mailbox
* @return boolean True on success, False on error
*/
function move_message($uids, $to_mbox, $from_mbox='')
{
$to_mbox = stripslashes($to_mbox);
$from_mbox = stripslashes($from_mbox);
$to_mbox = $this->_mod_mailbox($to_mbox);
$from_mbox = $from_mbox ? $this->_mod_mailbox($from_mbox) : $this->mailbox;
// make sure mailbox exists
if (!in_array($to_mbox, $this->_list_mailboxes()))
{
if (in_array($to_mbox, $this->default_folders))
$this->create_mailbox($to_mbox, TRUE);
else
return FALSE;
}
// convert the list of uids to array
$a_uids = is_string($uids) ? explode(',', $uids) : (is_array($uids) ? $uids : NULL);
// exit if no message uids are specified
if (!is_array($a_uids))
return false;
// convert uids to message ids
$a_mids = array();
foreach ($a_uids as $uid)
$a_mids[] = $this->_uid2id($uid, $from_mbox);
$iil_move = iil_C_Move($this->conn, join(',', $a_mids), $from_mbox, $to_mbox);
$moved = !($iil_move === false || $iil_move < 0);
// send expunge command in order to have the moved message
// really deleted from the source mailbox
if ($moved)
{
$this->_expunge($from_mbox, FALSE);
$this->_clear_messagecount($from_mbox);
$this->_clear_messagecount($to_mbox);
}
// remove message ids from search set
if ($moved && $this->search_set && $from_mbox == $this->mailbox)
$this->search_set = array_diff($this->search_set, $a_mids);
// update cached message headers
$cache_key = $from_mbox.'.msg';
if ($moved && ($a_cache_index = $this->get_message_cache_index($cache_key)))
{
$start_index = 100000;
foreach ($a_uids as $uid)
{
if (($index = array_search($uid, $a_cache_index)) !== FALSE)
$start_index = min($index, $start_index);
}
// clear cache from the lowest index on
$this->clear_message_cache($cache_key, $start_index);
}
return $moved;
}
/**
* Mark messages as deleted and expunge mailbox
*
* @param string List of UIDs to move, separated by comma
* @param string Source mailbox
* @return boolean True on success, False on error
*/
function delete_message($uids, $mbox_name='')
{
$mbox_name = stripslashes($mbox_name);
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
// convert the list of uids to array
$a_uids = is_string($uids) ? explode(',', $uids) : (is_array($uids) ? $uids : NULL);
// exit if no message uids are specified
if (!is_array($a_uids))
return false;
// convert uids to message ids
$a_mids = array();
foreach ($a_uids as $uid)
$a_mids[] = $this->_uid2id($uid, $mailbox);
$deleted = iil_C_Delete($this->conn, $mailbox, join(',', $a_mids));
// send expunge command in order to have the deleted message
// really deleted from the mailbox
if ($deleted)
{
$this->_expunge($mailbox, FALSE);
$this->_clear_messagecount($mailbox);
}
// remove message ids from search set
if ($moved && $this->search_set && $mailbox == $this->mailbox)
$this->search_set = array_diff($this->search_set, $a_mids);
// remove deleted messages from cache
$cache_key = $mailbox.'.msg';
if ($deleted && ($a_cache_index = $this->get_message_cache_index($cache_key)))
{
$start_index = 100000;
foreach ($a_uids as $uid)
{
if (($index = array_search($uid, $a_cache_index)) !== FALSE)
$start_index = min($index, $start_index);
}
// clear cache from the lowest index on
$this->clear_message_cache($cache_key, $start_index);
}
return $deleted;
}
/**
* Clear all messages in a specific mailbox
*
* @param string Mailbox name
* @return int Above 0 on success
*/
function clear_mailbox($mbox_name=NULL)
{
$mbox_name = stripslashes($mbox_name);
$mailbox = !empty($mbox_name) ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
$msg_count = $this->_messagecount($mailbox, 'ALL');
if ($msg_count>0)
{
$cleared = iil_C_ClearFolder($this->conn, $mailbox);
// make sure the message count cache is cleared as well
if ($cleared)
{
$this->clear_message_cache($mailbox.'.msg');
$a_mailbox_cache = $this->get_cache('messagecount');
unset($a_mailbox_cache[$mailbox]);
$this->update_cache('messagecount', $a_mailbox_cache);
}
return $cleared;
}
else
return 0;
}
/**
* Send IMAP expunge command and clear cache
*
* @param string Mailbox name
* @param boolean False if cache should not be cleared
* @return boolean True on success
*/
function expunge($mbox_name='', $clear_cache=TRUE)
{
$mbox_name = stripslashes($mbox_name);
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
return $this->_expunge($mailbox, $clear_cache);
}
/**
* Send IMAP expunge command and clear cache
*
* @see rcube_imap::expunge()
* @access private
*/
function _expunge($mailbox, $clear_cache=TRUE)
{
$result = iil_C_Expunge($this->conn, $mailbox);
if ($result>=0 && $clear_cache)
{
$this->clear_message_cache($mailbox.'.msg');
$this->_clear_messagecount($mailbox);
}
return $result;
}
/* --------------------------------
* folder managment
* --------------------------------*/
/**
* Get a list of all folders available on the IMAP server
*
* @param string IMAP root dir
* @return array Indexed array with folder names
*/
function list_unsubscribed($root='')
{
static $sa_unsubscribed;
if (is_array($sa_unsubscribed))
return $sa_unsubscribed;
// retrieve list of folders from IMAP server
$a_mboxes = iil_C_ListMailboxes($this->conn, $this->_mod_mailbox($root), '*');
// modify names with root dir
foreach ($a_mboxes as $mbox_name)
{
$name = $this->_mod_mailbox($mbox_name, 'out');
if (strlen($name))
$a_folders[] = $name;
}
// filter folders and sort them
$sa_unsubscribed = $this->_sort_mailbox_list($a_folders);
return $sa_unsubscribed;
}
/**
* Get mailbox quota information
* added by Nuny
*
* @return mixed Quota info or False if not supported
*/
function get_quota()
{
if ($this->get_capability('QUOTA'))
return iil_C_GetQuota($this->conn);
return FALSE;
}
/**
* Subscribe to a specific mailbox(es)
*
* @param string Mailbox name(s)
* @return boolean True on success
*/
function subscribe($mbox_name)
{
if (is_array($mbox_name))
$a_mboxes = $mbox_name;
else if (is_string($mbox_name) && strlen($mbox_name))
$a_mboxes = explode(',', $mbox_name);
// let this common function do the main work
return $this->_change_subscription($a_mboxes, 'subscribe');
}
/**
* Unsubscribe mailboxes
*
* @param string Mailbox name(s)
* @return boolean True on success
*/
function unsubscribe($mbox_name)
{
if (is_array($mbox_name))
$a_mboxes = $mbox_name;
else if (is_string($mbox_name) && strlen($mbox_name))
$a_mboxes = explode(',', $mbox_name);
// let this common function do the main work
return $this->_change_subscription($a_mboxes, 'unsubscribe');
}
/**
* Create a new mailbox on the server and register it in local cache
*
* @param string New mailbox name (as utf-7 string)
* @param boolean True if the new mailbox should be subscribed
* @param string Name of the created mailbox, false on error
*/
function create_mailbox($name, $subscribe=FALSE)
{
$result = FALSE;
// replace backslashes
$name = preg_replace('/[\\\]+/', '-', $name);
// reduce mailbox name to 100 chars
$name = substr($name, 0, 100);
$abs_name = $this->_mod_mailbox($name);
$a_mailbox_cache = $this->get_cache('mailboxes');
if (strlen($abs_name) && (!is_array($a_mailbox_cache) || !in_array($abs_name, $a_mailbox_cache)))
$result = iil_C_CreateFolder($this->conn, $abs_name);
// try to subscribe it
if ($result && $subscribe)
$this->subscribe($name);
return $result ? $name : FALSE;
}
/**
* Set a new name to an existing mailbox
*
* @param string Mailbox to rename (as utf-7 string)
* @param string New mailbox name (as utf-7 string)
* @return string Name of the renames mailbox, False on error
*/
function rename_mailbox($mbox_name, $new_name)
{
$result = FALSE;
// replace backslashes
$name = preg_replace('/[\\\]+/', '-', $new_name);
// encode mailbox name and reduce it to 100 chars
$name = substr($new_name, 0, 100);
// make absolute path
$mailbox = $this->_mod_mailbox($mbox_name);
$abs_name = $this->_mod_mailbox($name);
// check if mailbox is subscribed
$a_subscribed = $this->_list_mailboxes();
$subscribed = in_array($mailbox, $a_subscribed);
// unsubscribe folder
if ($subscribed)
iil_C_UnSubscribe($this->conn, $mailbox);
if (strlen($abs_name))
$result = iil_C_RenameFolder($this->conn, $mailbox, $abs_name);
// clear cache
if ($result)
{
$this->clear_message_cache($mailbox.'.msg');
$this->clear_cache('mailboxes');
}
// try to subscribe it
if ($result && $subscribed)
iil_C_Subscribe($this->conn, $abs_name);
return $result ? $name : FALSE;
}
/**
* Remove mailboxes from server
*
* @param string Mailbox name
* @return boolean True on success
*/
function delete_mailbox($mbox_name)
{
$deleted = FALSE;
if (is_array($mbox_name))
$a_mboxes = $mbox_name;
else if (is_string($mbox_name) && strlen($mbox_name))
$a_mboxes = explode(',', $mbox_name);
if (is_array($a_mboxes))
foreach ($a_mboxes as $mbox_name)
{
$mailbox = $this->_mod_mailbox($mbox_name);
// unsubscribe mailbox before deleting
iil_C_UnSubscribe($this->conn, $mailbox);
// send delete command to server
$result = iil_C_DeleteFolder($this->conn, $mailbox);
if ($result>=0)
$deleted = TRUE;
}
// clear mailboxlist cache
if ($deleted)
{
$this->clear_message_cache($mailbox.'.msg');
$this->clear_cache('mailboxes');
}
return $deleted;
}
/**
* Create all folders specified as default
*/
function create_default_folders()
{
$a_folders = iil_C_ListMailboxes($this->conn, $this->_mod_mailbox(''), '*');
$a_subscribed = iil_C_ListSubscribed($this->conn, $this->_mod_mailbox(''), '*');
// create default folders if they do not exist
foreach ($this->default_folders as $folder)
{
$abs_name = $this->_mod_mailbox($folder);
if (!in_array_nocase($abs_name, $a_folders))
$this->create_mailbox($folder, TRUE);
else if (!in_array_nocase($abs_name, $a_subscribed))
$this->subscribe($folder);
}
}
/* --------------------------------
* internal caching methods
* --------------------------------*/
/**
* @access private
*/
function set_caching($set)
{
if ($set && is_object($this->db))
$this->caching_enabled = TRUE;
else
$this->caching_enabled = FALSE;
}
/**
* @access private
*/
function get_cache($key)
{
// read cache
if (!isset($this->cache[$key]) && $this->caching_enabled)
{
$cache_data = $this->_read_cache_record('IMAP.'.$key);
$this->cache[$key] = strlen($cache_data) ? unserialize($cache_data) : FALSE;
}
return $this->cache[$key];
}
/**
* @access private
*/
function update_cache($key, $data)
{
$this->cache[$key] = $data;
$this->cache_changed = TRUE;
$this->cache_changes[$key] = TRUE;
}
/**
* @access private
*/
function write_cache()
{
if ($this->caching_enabled && $this->cache_changed)
{
foreach ($this->cache as $key => $data)
{
if ($this->cache_changes[$key])
$this->_write_cache_record('IMAP.'.$key, serialize($data));
}
}
}
/**
* @access private
*/
function clear_cache($key=NULL)
{
if ($key===NULL)
{
foreach ($this->cache as $key => $data)
$this->_clear_cache_record('IMAP.'.$key);
$this->cache = array();
$this->cache_changed = FALSE;
$this->cache_changes = array();
}
else
{
$this->_clear_cache_record('IMAP.'.$key);
$this->cache_changes[$key] = FALSE;
unset($this->cache[$key]);
}
}
/**
* @access private
*/
function _read_cache_record($key)
{
$cache_data = FALSE;
if ($this->db)
{
// get cached data from DB
$sql_result = $this->db->query(
"SELECT cache_id, data
FROM ".get_table_name('cache')."
WHERE user_id=?
AND cache_key=?",
$_SESSION['user_id'],
$key);
if ($sql_arr = $this->db->fetch_assoc($sql_result))
{
$cache_data = $sql_arr['data'];
$this->cache_keys[$key] = $sql_arr['cache_id'];
}
}
return $cache_data;
}
/**
* @access private
*/
function _write_cache_record($key, $data)
{
if (!$this->db)
return FALSE;
// check if we already have a cache entry for this key
if (!isset($this->cache_keys[$key]))
{
$sql_result = $this->db->query(
"SELECT cache_id
FROM ".get_table_name('cache')."
WHERE user_id=?
AND cache_key=?",
$_SESSION['user_id'],
$key);
if ($sql_arr = $this->db->fetch_assoc($sql_result))
$this->cache_keys[$key] = $sql_arr['cache_id'];
else
$this->cache_keys[$key] = FALSE;
}
// update existing cache record
if ($this->cache_keys[$key])
{
$this->db->query(
"UPDATE ".get_table_name('cache')."
SET created=".$this->db->now().",
data=?
WHERE user_id=?
AND cache_key=?",
$data,
$_SESSION['user_id'],
$key);
}
// add new cache record
else
{
$this->db->query(
"INSERT INTO ".get_table_name('cache')."
(created, user_id, cache_key, data)
VALUES (".$this->db->now().", ?, ?, ?)",
$_SESSION['user_id'],
$key,
$data);
}
}
/**
* @access private
*/
function _clear_cache_record($key)
{
$this->db->query(
"DELETE FROM ".get_table_name('cache')."
WHERE user_id=?
AND cache_key=?",
$_SESSION['user_id'],
$key);
}
/* --------------------------------
* message caching methods
* --------------------------------*/
/**
* Checks if the cache is up-to-date
*
* @param string Mailbox name
* @param string Internal cache key
* @return int -3 = off, -2 = incomplete, -1 = dirty
*/
function check_cache_status($mailbox, $cache_key)
{
if (!$this->caching_enabled)
return -3;
$cache_index = $this->get_message_cache_index($cache_key, TRUE);
$msg_count = $this->_messagecount($mailbox);
$cache_count = count($cache_index);
// console("Cache check: $msg_count !== ".count($cache_index));
if ($cache_count==$msg_count)
{
// get highest index
$header = iil_C_FetchHeader($this->conn, $mailbox, "$msg_count");
$cache_uid = array_pop($cache_index);
// uids of highest message matches -> cache seems OK
if ($cache_uid == $header->uid)
return 1;
// cache is dirty
return -1;
}
// if cache count differs less than 10% report as dirty
else if (abs($msg_count - $cache_count) < $msg_count/10)
return -1;
else
return -2;
}
/**
* @access private
*/
function get_message_cache($key, $from, $to, $sort_field, $sort_order)
{
$cache_key = "$key:$from:$to:$sort_field:$sort_order";
$db_header_fields = array('idx', 'uid', 'subject', 'from', 'to', 'cc', 'date', 'size');
if (!in_array($sort_field, $db_header_fields))
$sort_field = 'idx';
if ($this->caching_enabled && !isset($this->cache[$cache_key]))
{
$this->cache[$cache_key] = array();
$sql_result = $this->db->limitquery(
"SELECT idx, uid, headers
FROM ".get_table_name('messages')."
WHERE user_id=?
AND cache_key=?
ORDER BY ".$this->db->quoteIdentifier($sort_field)." ".
strtoupper($sort_order),
$from,
$to-$from,
$_SESSION['user_id'],
$key);
while ($sql_arr = $this->db->fetch_assoc($sql_result))
{
$uid = $sql_arr['uid'];
$this->cache[$cache_key][$uid] = unserialize($sql_arr['headers']);
}
}
return $this->cache[$cache_key];
}
/**
* @access private
*/
function &get_cached_message($key, $uid, $struct=false)
{
if (!$this->caching_enabled)
return FALSE;
$internal_key = '__single_msg';
if ($this->caching_enabled && (!isset($this->cache[$internal_key][$uid]) ||
($struct && empty($this->cache[$internal_key][$uid]->structure))))
{
$sql_select = "idx, uid, headers" . ($struct ? ", structure" : '');
$sql_result = $this->db->query(
"SELECT $sql_select
FROM ".get_table_name('messages')."
WHERE user_id=?
AND cache_key=?
AND uid=?",
$_SESSION['user_id'],
$key,
$uid);
if ($sql_arr = $this->db->fetch_assoc($sql_result))
{
$this->cache[$internal_key][$uid] = unserialize($sql_arr['headers']);
if (is_object($this->cache[$internal_key][$uid]) && !empty($sql_arr['structure']))
$this->cache[$internal_key][$uid]->structure = unserialize($sql_arr['structure']);
}
}
return $this->cache[$internal_key][$uid];
}
/**
* @access private
*/
function get_message_cache_index($key, $force=FALSE, $sort_col='idx', $sort_order='ASC')
{
static $sa_message_index = array();
// empty key -> empty array
if (!$this->caching_enabled || empty($key))
return array();
if (!empty($sa_message_index[$key]) && !$force)
return $sa_message_index[$key];
$sa_message_index[$key] = array();
$sql_result = $this->db->query(
"SELECT idx, uid
FROM ".get_table_name('messages')."
WHERE user_id=?
AND cache_key=?
ORDER BY ".$this->db->quote_identifier($sort_col)." ".$sort_order,
$_SESSION['user_id'],
$key);
while ($sql_arr = $this->db->fetch_assoc($sql_result))
$sa_message_index[$key][$sql_arr['idx']] = $sql_arr['uid'];
return $sa_message_index[$key];
}
/**
* @access private
*/
function add_message_cache($key, $index, $headers, $struct=null)
{
if (!$this->caching_enabled || empty($key) || !is_object($headers) || empty($headers->uid))
return;
// check for an existing record (probly headers are cached but structure not)
$sql_result = $this->db->query(
"SELECT message_id
FROM ".get_table_name('messages')."
WHERE user_id=?
AND cache_key=?
AND uid=?
AND del<>1",
$_SESSION['user_id'],
$key,
$headers->uid);
// update cache record
if ($sql_arr = $this->db->fetch_assoc($sql_result))
{
$this->db->query(
"UPDATE ".get_table_name('messages')."
SET idx=?, headers=?, structure=?
WHERE message_id=?",
$index,
serialize($headers),
is_object($struct) ? serialize($struct) : NULL,
$sql_arr['message_id']
);
}
else // insert new record
{
$this->db->query(
"INSERT INTO ".get_table_name('messages')."
(user_id, del, cache_key, created, idx, uid, subject, ".$this->db->quoteIdentifier('from').", ".$this->db->quoteIdentifier('to').", cc, date, size, headers, structure)
VALUES (?, 0, ?, ".$this->db->now().", ?, ?, ?, ?, ?, ?, ".$this->db->fromunixtime($headers->timestamp).", ?, ?, ?)",
$_SESSION['user_id'],
$key,
$index,
$headers->uid,
(string)substr($this->decode_header($headers->subject, TRUE), 0, 128),
(string)substr($this->decode_header($headers->from, TRUE), 0, 128),
(string)substr($this->decode_header($headers->to, TRUE), 0, 128),
(string)substr($this->decode_header($headers->cc, TRUE), 0, 128),
(int)$headers->size,
serialize($headers),
is_object($struct) ? serialize($struct) : NULL
);
}
}
/**
* @access private
*/
function remove_message_cache($key, $index)
{
$this->db->query(
"DELETE FROM ".get_table_name('messages')."
WHERE user_id=?
AND cache_key=?
AND idx=?",
$_SESSION['user_id'],
$key,
$index);
}
/**
* @access private
*/
function clear_message_cache($key, $start_index=1)
{
$this->db->query(
"DELETE FROM ".get_table_name('messages')."
WHERE user_id=?
AND cache_key=?
AND idx>=?",
$_SESSION['user_id'],
$key,
$start_index);
}
/* --------------------------------
* encoding/decoding methods
* --------------------------------*/
/**
* Split an address list into a structured array list
*
* @param string Input string
* @param int List only this number of addresses
* @param boolean Decode address strings
* @return array Indexed list of addresses
*/
function decode_address_list($input, $max=null, $decode=true)
{
$a = $this->_parse_address_list($input, $decode);
$out = array();
if (!is_array($a))
return $out;
$c = count($a);
$j = 0;
foreach ($a as $val)
{
$j++;
$address = $val['address'];
$name = preg_replace(array('/^[\'"]/', '/[\'"]$/'), '', trim($val['name']));
if ($name && $address && $name != $address)
$string = sprintf('%s <%s>', strpos($name, ',')!==FALSE ? '"'.$name.'"' : $name, $address);
else if ($address)
$string = $address;
else if ($name)
$string = $name;
$out[$j] = array('name' => $name,
'mailto' => $address,
'string' => $string);
if ($max && $j==$max)
break;
}
return $out;
}
/**
* Decode a message header value
*
* @param string Header value
* @param boolean Remove quotes if necessary
* @return string Decoded string
*/
function decode_header($input, $remove_quotes=FALSE)
{
$str = $this->decode_mime_string((string)$input);
if ($str{0}=='"' && $remove_quotes)
$str = str_replace('"', '', $str);
return $str;
}
/**
* Decode a mime-encoded string to internal charset
*
* @param string Header value
* @param string Fallback charset if none specified
* @return string Decoded string
* @static
*/
function decode_mime_string($input, $fallback=null)
{
$out = '';
$pos = strpos($input, '=?');
if ($pos !== false)
{
$out = substr($input, 0, $pos);
$end_cs_pos = strpos($input, "?", $pos+2);
$end_en_pos = strpos($input, "?", $end_cs_pos+1);
$end_pos = strpos($input, "?=", $end_en_pos+1);
$encstr = substr($input, $pos+2, ($end_pos-$pos-2));
$rest = substr($input, $end_pos+2);
$out .= rcube_imap::_decode_mime_string_part($encstr);
$out .= rcube_imap::decode_mime_string($rest, $fallback);
return $out;
}
// no encoding information, use fallback
return rcube_charset_convert($input, !empty($fallback) ? $fallback : 'ISO-8859-1');
}
/**
* Decode a part of a mime-encoded string
*
* @access private
*/
function _decode_mime_string_part($str)
{
$a = explode('?', $str);
$count = count($a);
// should be in format "charset?encoding?base64_string"
if ($count >= 3)
{
for ($i=2; $i<$count; $i++)
$rest.=$a[$i];
if (($a[1]=="B")||($a[1]=="b"))
$rest = base64_decode($rest);
else if (($a[1]=="Q")||($a[1]=="q"))
{
$rest = str_replace("_", " ", $rest);
$rest = quoted_printable_decode($rest);
}
return rcube_charset_convert($rest, $a[0]);
}
else
return $str; // we dont' know what to do with this
}
/**
* Decode a mime part
*
* @param string Input string
* @param string Part encoding
* @return string Decoded string
* @access private
*/
function mime_decode($input, $encoding='7bit')
{
switch (strtolower($encoding))
{
case '7bit':
return $input;
break;
case 'quoted-printable':
return quoted_printable_decode($input);
break;
case 'base64':
return base64_decode($input);
break;
default:
return $input;
}
}
/**
* Convert body charset to UTF-8 according to the ctype_parameters
*
* @param string Part body to decode
* @param string Charset to convert from
* @return string Content converted to internal charset
*/
function charset_decode($body, $ctype_param)
{
if (is_array($ctype_param) && !empty($ctype_param['charset']))
return rcube_charset_convert($body, $ctype_param['charset']);
// defaults to what is specified in the class header
return rcube_charset_convert($body, 'ISO-8859-1');
}
/**
* Translate UID to message ID
*
* @param int Message UID
* @param string Mailbox name
* @return int Message ID
*/
function get_id($uid, $mbox_name=NULL)
{
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
return $this->_uid2id($uid, $mailbox);
}
/**
* Translate message number to UID
*
* @param int Message ID
* @param string Mailbox name
* @return int Message UID
*/
function get_uid($id,$mbox_name=NULL)
{
$mailbox = $mbox_name ? $this->_mod_mailbox($mbox_name) : $this->mailbox;
return $this->_id2uid($id, $mailbox);
}
/* --------------------------------
* private methods
* --------------------------------*/
/**
* @access private
*/
function _mod_mailbox($mbox_name, $mode='in')
{
if ((!empty($this->root_ns) && $this->root_ns == $mbox_name) || $mbox_name == 'INBOX')
return $mbox_name;
if (!empty($this->root_dir) && $mode=='in')
$mbox_name = $this->root_dir.$this->delimiter.$mbox_name;
else if (strlen($this->root_dir) && $mode=='out')
$mbox_name = substr($mbox_name, strlen($this->root_dir)+1);
return $mbox_name;
}
/**
* Sort mailboxes first by default folders and then in alphabethical order
* @access private
*/
function _sort_mailbox_list($a_folders)
{
$a_out = $a_defaults = array();
// find default folders and skip folders starting with '.'
foreach($a_folders as $i => $folder)
{
if ($folder{0}=='.')
continue;
if (($p = array_search(strtolower($folder), $this->default_folders_lc))!==FALSE)
$a_defaults[$p] = $folder;
else
$a_out[] = $folder;
}
natcasesort($a_out);
ksort($a_defaults);
return array_merge($a_defaults, $a_out);
}
/**
* @access private
*/
function _uid2id($uid, $mbox_name=NULL)
{
if (!$mbox_name)
$mbox_name = $this->mailbox;
if (!isset($this->uid_id_map[$mbox_name][$uid]))
$this->uid_id_map[$mbox_name][$uid] = iil_C_UID2ID($this->conn, $mbox_name, $uid);
return $this->uid_id_map[$mbox_name][$uid];
}
/**
* @access private
*/
function _id2uid($id, $mbox_name=NULL)
{
if (!$mbox_name)
$mbox_name = $this->mailbox;
return iil_C_ID2UID($this->conn, $mbox_name, $id);
}
/**
* Parse string or array of server capabilities and put them in internal array
* @access private
*/
function _parse_capability($caps)
{
if (!is_array($caps))
$cap_arr = explode(' ', $caps);
else
$cap_arr = $caps;
foreach ($cap_arr as $cap)
{
if ($cap=='CAPABILITY')
continue;
if (strpos($cap, '=')>0)
{
list($key, $value) = explode('=', $cap);
if (!is_array($this->capabilities[$key]))
$this->capabilities[$key] = array();
$this->capabilities[$key][] = $value;
}
else
$this->capabilities[$cap] = TRUE;
}
}
/**
* Subscribe/unsubscribe a list of mailboxes and update local cache
* @access private
*/
function _change_subscription($a_mboxes, $mode)
{
$updated = FALSE;
if (is_array($a_mboxes))
foreach ($a_mboxes as $i => $mbox_name)
{
$mailbox = $this->_mod_mailbox($mbox_name);
$a_mboxes[$i] = $mailbox;
if ($mode=='subscribe')
$result = iil_C_Subscribe($this->conn, $mailbox);
else if ($mode=='unsubscribe')
$result = iil_C_UnSubscribe($this->conn, $mailbox);
if ($result>=0)
$updated = TRUE;
}
// get cached mailbox list
if ($updated)
{
$a_mailbox_cache = $this->get_cache('mailboxes');
if (!is_array($a_mailbox_cache))
return $updated;
// modify cached list
if ($mode=='subscribe')
$a_mailbox_cache = array_merge($a_mailbox_cache, $a_mboxes);
else if ($mode=='unsubscribe')
$a_mailbox_cache = array_diff($a_mailbox_cache, $a_mboxes);
// write mailboxlist to cache
$this->update_cache('mailboxes', $this->_sort_mailbox_list($a_mailbox_cache));
}
return $updated;
}
/**
* Increde/decrese messagecount for a specific mailbox
* @access private
*/
function _set_messagecount($mbox_name, $mode, $increment)
{
$a_mailbox_cache = FALSE;
$mailbox = $mbox_name ? $mbox_name : $this->mailbox;
$mode = strtoupper($mode);
$a_mailbox_cache = $this->get_cache('messagecount');
if (!is_array($a_mailbox_cache[$mailbox]) || !isset($a_mailbox_cache[$mailbox][$mode]) || !is_numeric($increment))
return FALSE;
// add incremental value to messagecount
$a_mailbox_cache[$mailbox][$mode] += $increment;
// there's something wrong, delete from cache
if ($a_mailbox_cache[$mailbox][$mode] < 0)
unset($a_mailbox_cache[$mailbox][$mode]);
// write back to cache
$this->update_cache('messagecount', $a_mailbox_cache);
return TRUE;
}
/**
* Remove messagecount of a specific mailbox from cache
* @access private
*/
function _clear_messagecount($mbox_name='')
{
$a_mailbox_cache = FALSE;
$mailbox = $mbox_name ? $mbox_name : $this->mailbox;
$a_mailbox_cache = $this->get_cache('messagecount');
if (is_array($a_mailbox_cache[$mailbox]))
{
unset($a_mailbox_cache[$mailbox]);
$this->update_cache('messagecount', $a_mailbox_cache);
}
}
/**
* Split RFC822 header string into an associative array
* @access private
*/
function _parse_headers($headers)
{
$a_headers = array();
$lines = explode("\n", $headers);
$c = count($lines);
for ($i=0; $i<$c; $i++)
{
if ($p = strpos($lines[$i], ': '))
{
$field = strtolower(substr($lines[$i], 0, $p));
$value = trim(substr($lines[$i], $p+1));
if (!empty($value))
$a_headers[$field] = $value;
}
}
return $a_headers;
}
/**
* @access private
*/
function _parse_address_list($str, $decode=true)
{
// remove any newlines and carriage returns before
$a = $this->_explode_quoted_string('[,;]', preg_replace( "/[\r\n]/", " ", $str));
$result = array();
foreach ($a as $key => $val)
{
$val = preg_replace("/([\"\w])</", "$1 <", $val);
$sub_a = $this->_explode_quoted_string(' ', $decode ? $this->decode_header($val) : $val);
$result[$key]['name'] = '';
foreach ($sub_a as $k => $v)
{
if (strpos($v, '@') > 0)
$result[$key]['address'] = str_replace('<', '', str_replace('>', '', $v));
else
$result[$key]['name'] .= (empty($result[$key]['name'])?'':' ').str_replace("\"",'',stripslashes($v));
}
if (empty($result[$key]['name']))
$result[$key]['name'] = $result[$key]['address'];
}
return $result;
}
/**
* @access private
*/
function _explode_quoted_string($delimiter, $string)
{
$result = array();
$strlen = strlen($string);
for ($q=$p=$i=0; $i < $strlen; $i++)
{
if ($string{$i} == "\"" && $string{$i-1} != "\\")
$q = $q ? false : true;
else if (!$q && preg_match("/$delimiter/", $string{$i}))
{
$result[] = substr($string, $p, $i - $p);
$p = $i + 1;
}
}
$result[] = substr($string, $p);
return $result;
}
} // end class rcube_imap
/**
* Class representing a message part
*
* @package Mail
*/
class rcube_message_part
{
var $mime_id = '';
var $ctype_primary = 'text';
var $ctype_secondary = 'plain';
var $mimetype = 'text/plain';
var $disposition = '';
var $filename = '';
var $encoding = '8bit';
var $charset = '';
var $size = 0;
var $headers = array();
var $d_parameters = array();
var $ctype_parameters = array();
}
/**
* Class for sorting an array of iilBasicHeader objects in a predetermined order.
*
* @package Mail
* @author Eric Stadtherr
*/
class rcube_header_sorter
{
var $sequence_numbers = array();
/**
* Set the predetermined sort order.
*
* @param array Numerically indexed array of IMAP message sequence numbers
*/
function set_sequence_numbers($seqnums)
{
$this->sequence_numbers = $seqnums;
}
/**
* Sort the array of header objects
*
* @param array Array of iilBasicHeader objects indexed by UID
*/
function sort_headers(&$headers)
{
/*
* uksort would work if the keys were the sequence number, but unfortunately
* the keys are the UIDs. We'll use uasort instead and dereference the value
* to get the sequence number (in the "id" field).
*
* uksort($headers, array($this, "compare_seqnums"));
*/
uasort($headers, array($this, "compare_seqnums"));
}
/**
* Get the position of a message sequence number in my sequence_numbers array
*
* @param int Message sequence number contained in sequence_numbers
* @return int Position, -1 if not found
*/
function position_of($seqnum)
{
$c = count($this->sequence_numbers);
for ($pos = 0; $pos <= $c; $pos++)
{
if ($this->sequence_numbers[$pos] == $seqnum)
return $pos;
}
return -1;
}
/**
* Sort method called by uasort()
*/
function compare_seqnums($a, $b)
{
// First get the sequence number from the header object (the 'id' field).
$seqa = $a->id;
$seqb = $b->id;
// then find each sequence number in my ordered list
$posa = $this->position_of($seqa);
$posb = $this->position_of($seqb);
// return the relative position as the comparison value
$ret = $posa - $posb;
return $ret;
}
}
/**
* Add quoted-printable encoding to a given string
*
* @param string String to encode
* @param int Add new line after this number of characters
* @param boolean True if spaces should be converted into =20
* @return string Encoded string
*/
function quoted_printable_encode($input, $line_max=76, $space_conv=false)
{
$hex = array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F');
$lines = preg_split("/(?:\r\n|\r|\n)/", $input);
$eol = "\r\n";
$escape = "=";
$output = "";
while( list(, $line) = each($lines))
{
//$line = rtrim($line); // remove trailing white space -> no =20\r\n necessary
$linlen = strlen($line);
$newline = "";
for($i = 0; $i < $linlen; $i++)
{
$c = substr( $line, $i, 1 );
$dec = ord( $c );
if ( ( $i == 0 ) && ( $dec == 46 ) ) // convert first point in the line into =2E
{
$c = "=2E";
}
if ( $dec == 32 )
{
if ( $i == ( $linlen - 1 ) ) // convert space at eol only
{
$c = "=20";
}
else if ( $space_conv )
{
$c = "=20";
}
}
else if ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) // always encode "\t", which is *not* required
{
$h2 = floor($dec/16);
$h1 = floor($dec%16);
$c = $escape.$hex["$h2"].$hex["$h1"];
}
if ( (strlen($newline) + strlen($c)) >= $line_max ) // CRLF is not counted
{
$output .= $newline.$escape.$eol; // soft line break; " =\r\n" is okay
$newline = "";
// check if newline first character will be point or not
if ( $dec == 46 )
{
$c = "=2E";
}
}
$newline .= $c;
} // end of for
$output .= $newline.$eol;
} // end of while
return trim($output);
}
?>

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