| 1 | <?php |
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| 2 | |
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| 3 | /* |
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| 4 | +-----------------------------------------------------------------------+ |
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| 5 | | program/include/rcube_message.php | |
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| 6 | | | |
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| 7 | | This file is part of the RoundCube Webmail client | |
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| 8 | | Copyright (C) 2008-2010, RoundCube Dev. - Switzerland | |
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| 9 | | Licensed under the GNU GPL | |
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| 10 | | | |
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| 11 | | PURPOSE: | |
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| 12 | | Logical representation of a mail message with all its data | |
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| 13 | | and related functions | |
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| 14 | +-----------------------------------------------------------------------+ |
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| 15 | | Author: Thomas Bruederli <roundcube@gmail.com> | |
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| 16 | +-----------------------------------------------------------------------+ |
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| 17 | |
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| 18 | $Id$ |
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| 19 | |
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| 20 | */ |
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| 21 | |
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| 22 | |
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| 23 | /** |
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| 24 | * Logical representation of a mail message with all its data |
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| 25 | * and related functions |
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| 26 | * |
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| 27 | * @package Mail |
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| 28 | * @author Thomas Bruederli <roundcube@gmail.com> |
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| 29 | */ |
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| 30 | class rcube_message |
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| 31 | { |
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| 32 | private $app; |
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| 33 | private $imap; |
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| 34 | private $opt = array(); |
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| 35 | private $inline_parts = array(); |
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| 36 | private $parse_alternative = false; |
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| 37 | |
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| 38 | public $uid = null; |
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| 39 | public $headers; |
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| 40 | public $structure; |
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| 41 | public $parts = array(); |
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| 42 | public $mime_parts = array(); |
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| 43 | public $attachments = array(); |
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| 44 | public $subject = ''; |
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| 45 | public $sender = null; |
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| 46 | public $is_safe = false; |
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| 47 | |
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| 48 | |
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| 49 | /** |
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| 50 | * __construct |
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| 51 | * |
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| 52 | * Provide a uid, and parse message structure. |
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| 53 | * |
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| 54 | * @param string $uid The message UID. |
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| 55 | * |
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| 56 | * @uses rcmail::get_instance() |
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| 57 | * @uses rcube_imap::decode_mime_string() |
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| 58 | * @uses self::set_safe() |
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| 59 | * |
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| 60 | * @see self::$app, self::$imap, self::$opt, self::$structure |
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| 61 | */ |
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| 62 | function __construct($uid) |
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| 63 | { |
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| 64 | $this->app = rcmail::get_instance(); |
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| 65 | $this->imap = $this->app->imap; |
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| 66 | |
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| 67 | $this->uid = $uid; |
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| 68 | $this->headers = $this->imap->get_headers($uid, NULL, true, true); |
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| 69 | |
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| 70 | if (!$this->headers) |
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| 71 | return; |
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| 72 | |
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| 73 | $this->subject = rcube_imap::decode_mime_string( |
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| 74 | $this->headers->subject, $this->headers->charset); |
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| 75 | list(, $this->sender) = each($this->imap->decode_address_list($this->headers->from)); |
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| 76 | |
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| 77 | $this->set_safe((intval($_GET['_safe']) || $_SESSION['safe_messages'][$uid])); |
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| 78 | $this->opt = array( |
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| 79 | 'safe' => $this->is_safe, |
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| 80 | 'prefer_html' => $this->app->config->get('prefer_html'), |
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| 81 | 'get_url' => rcmail_url('get', array( |
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| 82 | '_mbox' => $this->imap->get_mailbox_name(), '_uid' => $uid)) |
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| 83 | ); |
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| 84 | |
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| 85 | if ($this->structure = $this->imap->get_structure($uid, $this->headers->body_structure)) { |
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| 86 | $this->get_mime_numbers($this->structure); |
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| 87 | $this->parse_structure($this->structure); |
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| 88 | } |
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| 89 | else { |
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| 90 | $this->body = $this->imap->get_body($uid); |
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| 91 | } |
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| 92 | |
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| 93 | // notify plugins and let them analyze this structured message object |
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| 94 | $this->app->plugins->exec_hook('message_load', array('object' => $this)); |
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| 95 | } |
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| 96 | |
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| 97 | |
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| 98 | /** |
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| 99 | * Return a (decoded) message header |
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| 100 | * |
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| 101 | * @param string Header name |
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| 102 | * @param bool Don't mime-decode the value |
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| 103 | * @return string Header value |
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| 104 | */ |
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| 105 | public function get_header($name, $raw = false) |
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| 106 | { |
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| 107 | $value = $this->headers->$name; |
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| 108 | return $raw ? $value : $this->imap->decode_header($value); |
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| 109 | } |
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| 110 | |
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| 111 | |
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| 112 | /** |
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| 113 | * Set is_safe var and session data |
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| 114 | * |
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| 115 | * @param bool enable/disable |
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| 116 | */ |
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| 117 | public function set_safe($safe = true) |
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| 118 | { |
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| 119 | $this->is_safe = $safe; |
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| 120 | $_SESSION['safe_messages'][$this->uid] = $this->is_safe; |
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| 121 | } |
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| 122 | |
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| 123 | |
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| 124 | /** |
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| 125 | * Compose a valid URL for getting a message part |
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| 126 | * |
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| 127 | * @param string Part MIME-ID |
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| 128 | * @return string URL or false if part does not exist |
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| 129 | */ |
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| 130 | public function get_part_url($mime_id) |
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| 131 | { |
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| 132 | if ($this->mime_parts[$mime_id]) |
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| 133 | return $this->opt['get_url'] . '&_part=' . $mime_id; |
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| 134 | else |
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| 135 | return false; |
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| 136 | } |
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| 137 | |
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| 138 | |
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| 139 | /** |
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| 140 | * Get content of a specific part of this message |
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| 141 | * |
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| 142 | * @param string Part MIME-ID |
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| 143 | * @param resource File pointer to save the message part |
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| 144 | * @return string Part content |
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| 145 | */ |
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| 146 | public function get_part_content($mime_id, $fp=NULL) |
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| 147 | { |
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| 148 | if ($part = $this->mime_parts[$mime_id]) { |
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| 149 | // stored in message structure (winmail/inline-uuencode) |
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| 150 | if ($part->encoding == 'stream') { |
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| 151 | if ($fp) { |
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| 152 | fwrite($fp, $part->body); |
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| 153 | } |
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| 154 | return $fp ? true : $part->body; |
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| 155 | } |
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| 156 | // get from IMAP |
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| 157 | return $this->imap->get_message_part($this->uid, $mime_id, $part, NULL, $fp); |
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| 158 | } else |
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| 159 | return null; |
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| 160 | } |
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| 161 | |
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| 162 | |
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| 163 | /** |
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| 164 | * Determine if the message contains a HTML part |
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| 165 | * |
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| 166 | * @return bool True if a HTML is available, False if not |
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| 167 | */ |
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| 168 | function has_html_part() |
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| 169 | { |
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| 170 | // check all message parts |
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| 171 | foreach ($this->parts as $pid => $part) { |
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| 172 | $mimetype = strtolower($part->ctype_primary . '/' . $part->ctype_secondary); |
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| 173 | if ($mimetype == 'text/html') |
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| 174 | return true; |
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| 175 | } |
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| 176 | |
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| 177 | return false; |
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| 178 | } |
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| 179 | |
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| 180 | |
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| 181 | /** |
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| 182 | * Return the first HTML part of this message |
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| 183 | * |
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| 184 | * @return string HTML message part content |
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| 185 | */ |
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| 186 | function first_html_part() |
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| 187 | { |
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| 188 | // check all message parts |
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| 189 | foreach ($this->mime_parts as $mime_id => $part) { |
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| 190 | $mimetype = strtolower($part->ctype_primary . '/' . $part->ctype_secondary); |
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| 191 | if ($mimetype == 'text/html') { |
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| 192 | return $this->imap->get_message_part($this->uid, $mime_id, $part); |
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| 193 | } |
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| 194 | } |
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| 195 | } |
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| 196 | |
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| 197 | |
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| 198 | /** |
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| 199 | * Return the first text part of this message |
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| 200 | * |
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| 201 | * @return string Plain text message/part content |
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| 202 | */ |
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| 203 | function first_text_part() |
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| 204 | { |
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| 205 | // no message structure, return complete body |
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| 206 | if (empty($this->parts)) |
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| 207 | return $this->body; |
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| 208 | |
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| 209 | $out = null; |
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| 210 | |
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| 211 | // check all message parts |
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| 212 | foreach ($this->mime_parts as $mime_id => $part) { |
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| 213 | $mimetype = $part->ctype_primary . '/' . $part->ctype_secondary; |
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| 214 | |
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| 215 | if ($mimetype == 'text/plain') { |
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| 216 | $out = $this->imap->get_message_part($this->uid, $mime_id, $part); |
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| 217 | |
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| 218 | // re-format format=flowed content |
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| 219 | if ($part->ctype_secondary == 'plain' && $part->ctype_parameters['format'] == 'flowed') |
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| 220 | $out = self::unfold_flowed($out); |
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| 221 | break; |
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| 222 | } |
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| 223 | else if ($mimetype == 'text/html') { |
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| 224 | $out = $this->imap->get_message_part($this->uid, $mime_id, $part); |
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| 225 | |
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| 226 | // remove special chars encoding |
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| 227 | $trans = array_flip(get_html_translation_table(HTML_ENTITIES)); |
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| 228 | $out = strtr($out, $trans); |
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| 229 | |
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| 230 | // create instance of html2text class |
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| 231 | $txt = new html2text($out); |
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| 232 | $out = $txt->get_text(); |
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| 233 | } |
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| 234 | } |
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| 235 | |
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| 236 | return $out; |
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| 237 | } |
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| 238 | |
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| 239 | |
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| 240 | /** |
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| 241 | * Raad the message structure returend by the IMAP server |
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| 242 | * and build flat lists of content parts and attachments |
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| 243 | * |
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| 244 | * @param object rcube_message_part Message structure node |
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| 245 | * @param bool True when called recursively |
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| 246 | */ |
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| 247 | private function parse_structure($structure, $recursive = false) |
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| 248 | { |
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| 249 | // real content-type of message/rfc822 part |
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| 250 | if ($structure->mimetype == 'message/rfc822' && $structure->real_mimetype) |
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| 251 | $mimetype = $structure->real_mimetype; |
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| 252 | else |
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| 253 | $mimetype = $structure->mimetype; |
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| 254 | |
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| 255 | // show message headers |
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| 256 | if ($recursive && is_array($structure->headers) && isset($structure->headers['subject'])) { |
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| 257 | $c = new stdClass; |
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| 258 | $c->type = 'headers'; |
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| 259 | $c->headers = &$structure->headers; |
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| 260 | $this->parts[] = $c; |
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| 261 | } |
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| 262 | |
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| 263 | // Allow plugins to handle message parts |
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| 264 | $plugin = $this->app->plugins->exec_hook('message_part_structure', |
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| 265 | array('object' => $this, 'structure' => $structure, |
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| 266 | 'mimetype' => $mimetype, 'recursive' => $recursive)); |
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| 267 | |
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| 268 | if ($plugin['abort']) |
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| 269 | return; |
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| 270 | |
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| 271 | $structure = $plugin['structure']; |
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| 272 | list($message_ctype_primary, $message_ctype_secondary) = explode('/', $plugin['mimetype']); |
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| 273 | |
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| 274 | // print body if message doesn't have multiple parts |
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| 275 | if ($message_ctype_primary == 'text' && !$recursive) { |
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| 276 | $structure->type = 'content'; |
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| 277 | $this->parts[] = &$structure; |
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| 278 | |
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| 279 | // Parse simple (plain text) message body |
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| 280 | if ($message_ctype_secondary == 'plain') |
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| 281 | foreach ((array)$this->uu_decode($structure) as $uupart) { |
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| 282 | $this->mime_parts[$uupart->mime_id] = $uupart; |
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| 283 | $this->attachments[] = $uupart; |
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| 284 | } |
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| 285 | } |
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| 286 | // the same for pgp signed messages |
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| 287 | else if ($mimetype == 'application/pgp' && !$recursive) { |
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| 288 | $structure->type = 'content'; |
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| 289 | $this->parts[] = &$structure; |
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| 290 | } |
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| 291 | // message contains alternative parts |
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| 292 | else if ($mimetype == 'multipart/alternative' && is_array($structure->parts)) { |
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| 293 | // get html/plaintext parts |
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| 294 | $plain_part = $html_part = $print_part = $related_part = null; |
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| 295 | |
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| 296 | foreach ($structure->parts as $p => $sub_part) { |
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| 297 | $sub_mimetype = $sub_part->mimetype; |
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| 298 | |
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| 299 | // check if sub part is |
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| 300 | if ($sub_mimetype == 'text/plain') |
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| 301 | $plain_part = $p; |
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| 302 | else if ($sub_mimetype == 'text/html') |
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| 303 | $html_part = $p; |
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| 304 | else if ($sub_mimetype == 'text/enriched') |
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| 305 | $enriched_part = $p; |
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| 306 | else if (in_array($sub_mimetype, array('multipart/related', 'multipart/mixed', 'multipart/alternative'))) |
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| 307 | $related_part = $p; |
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| 308 | } |
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| 309 | |
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| 310 | // parse related part (alternative part could be in here) |
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| 311 | if ($related_part !== null && !$this->parse_alternative) { |
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| 312 | $this->parse_alternative = true; |
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| 313 | $this->parse_structure($structure->parts[$related_part], true); |
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| 314 | $this->parse_alternative = false; |
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| 315 | |
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| 316 | // if plain part was found, we should unset it if html is preferred |
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| 317 | if ($this->opt['prefer_html'] && count($this->parts)) |
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| 318 | $plain_part = null; |
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| 319 | } |
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| 320 | |
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| 321 | // choose html/plain part to print |
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| 322 | if ($html_part !== null && $this->opt['prefer_html']) { |
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| 323 | $print_part = &$structure->parts[$html_part]; |
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| 324 | } |
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| 325 | else if ($enriched_part !== null) { |
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| 326 | $print_part = &$structure->parts[$enriched_part]; |
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| 327 | } |
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| 328 | else if ($plain_part !== null) { |
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| 329 | $print_part = &$structure->parts[$plain_part]; |
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| 330 | } |
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| 331 | |
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| 332 | // add the right message body |
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| 333 | if (is_object($print_part)) { |
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| 334 | $print_part->type = 'content'; |
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| 335 | $this->parts[] = $print_part; |
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| 336 | } |
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| 337 | // show plaintext warning |
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| 338 | else if ($html_part !== null && empty($this->parts)) { |
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| 339 | $c = new stdClass; |
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| 340 | $c->type = 'content'; |
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| 341 | $c->ctype_primary = 'text'; |
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| 342 | $c->ctype_secondary = 'plain'; |
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| 343 | $c->body = rcube_label('htmlmessage'); |
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| 344 | |
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| 345 | $this->parts[] = $c; |
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| 346 | } |
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| 347 | |
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| 348 | // add html part as attachment |
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| 349 | if ($html_part !== null && $structure->parts[$html_part] !== $print_part) { |
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| 350 | $html_part = &$structure->parts[$html_part]; |
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| 351 | $html_part->filename = rcube_label('htmlmessage'); |
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| 352 | $html_part->mimetype = 'text/html'; |
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| 353 | |
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| 354 | $this->attachments[] = $html_part; |
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| 355 | } |
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| 356 | } |
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| 357 | // this is an ecrypted message -> create a plaintext body with the according message |
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| 358 | else if ($mimetype == 'multipart/encrypted') { |
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| 359 | $p = new stdClass; |
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| 360 | $p->type = 'content'; |
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| 361 | $p->ctype_primary = 'text'; |
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| 362 | $p->ctype_secondary = 'plain'; |
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| 363 | $p->body = rcube_label('encryptedmessage'); |
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| 364 | $p->size = strlen($p->body); |
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| 365 | } |
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| 366 | // message contains multiple parts |
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| 367 | else if (is_array($structure->parts) && !empty($structure->parts)) { |
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| 368 | // iterate over parts |
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| 369 | for ($i=0; $i < count($structure->parts); $i++) { |
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| 370 | $mail_part = &$structure->parts[$i]; |
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| 371 | $primary_type = $mail_part->ctype_primary; |
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| 372 | $secondary_type = $mail_part->ctype_secondary; |
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| 373 | |
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| 374 | // real content-type of message/rfc822 |
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| 375 | if ($mail_part->real_mimetype) { |
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| 376 | $part_orig_mimetype = $mail_part->mimetype; |
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| 377 | $part_mimetype = $mail_part->real_mimetype; |
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| 378 | list($primary_type, $secondary_type) = explode('/', $part_mimetype); |
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| 379 | } |
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| 380 | else |
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| 381 | $part_mimetype = $mail_part->mimetype; |
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| 382 | |
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| 383 | // multipart/alternative |
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| 384 | if ($primary_type == 'multipart') { |
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| 385 | $this->parse_structure($mail_part, true); |
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| 386 | |
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| 387 | // list message/rfc822 as attachment as well (mostly .eml) |
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| 388 | if ($part_orig_mimetype == 'message/rfc822' && !empty($mail_part->filename)) |
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| 389 | $this->attachments[] = $mail_part; |
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| 390 | } |
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| 391 | // part text/[plain|html] OR message/delivery-status |
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| 392 | else if ((($part_mimetype == 'text/plain' || $part_mimetype == 'text/html') && $mail_part->disposition != 'attachment') || |
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| 393 | $part_mimetype == 'message/delivery-status' || $part_mimetype == 'message/disposition-notification' |
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| 394 | ) { |
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| 395 | // Allow plugins to handle also this part |
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| 396 | $plugin = $this->app->plugins->exec_hook('message_part_structure', |
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| 397 | array('object' => $this, 'structure' => $mail_part, |
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| 398 | 'mimetype' => $part_mimetype, 'recursive' => true)); |
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| 399 | |
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| 400 | if ($plugin['abort']) |
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| 401 | continue; |
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| 402 | |
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| 403 | $mail_part = $plugin['structure']; |
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| 404 | list($primary_type, $secondary_type) = explode('/', $plugin['mimetype']); |
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| 405 | |
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| 406 | // add text part if it matches the prefs |
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| 407 | if (!$this->parse_alternative || |
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| 408 | ($secondary_type == 'html' && $this->opt['prefer_html']) || |
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| 409 | ($secondary_type == 'plain' && !$this->opt['prefer_html']) |
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| 410 | ) { |
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| 411 | $mail_part->type = 'content'; |
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| 412 | $this->parts[] = $mail_part; |
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| 413 | } |
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| 414 | |
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| 415 | // list as attachment as well |
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| 416 | if (!empty($mail_part->filename)) |
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| 417 | $this->attachments[] = $mail_part; |
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| 418 | } |
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| 419 | // part message/* |
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| 420 | else if ($primary_type=='message') { |
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| 421 | $this->parse_structure($mail_part, true); |
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| 422 | |
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| 423 | // list as attachment as well (mostly .eml) |
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| 424 | if (!empty($mail_part->filename)) |
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| 425 | $this->attachments[] = $mail_part; |
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| 426 | } |
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| 427 | // ignore "virtual" protocol parts |
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| 428 | else if ($primary_type == 'protocol') { |
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| 429 | continue; |
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| 430 | } |
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| 431 | // part is Microsoft Outlook TNEF (winmail.dat) |
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| 432 | else if ($part_mimetype == 'application/ms-tnef') { |
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| 433 | foreach ((array)$this->tnef_decode($mail_part) as $tpart) { |
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| 434 | $this->mime_parts[$tpart->mime_id] = $tpart; |
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| 435 | $this->attachments[] = $tpart; |
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| 436 | } |
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| 437 | } |
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| 438 | // part is a file/attachment |
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| 439 | else if (preg_match('/^(inline|attach)/', $mail_part->disposition) || |
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| 440 | $mail_part->headers['content-id'] || (empty($mail_part->disposition) && $mail_part->filename) |
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| 441 | ) { |
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| 442 | // skip apple resource forks |
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| 443 | if ($message_ctype_secondary == 'appledouble' && $secondary_type == 'applefile') |
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| 444 | continue; |
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| 445 | |
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| 446 | // part belongs to a related message and is linked |
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| 447 | if ($mimetype == 'multipart/related' |
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| 448 | && ($mail_part->headers['content-id'] || $mail_part->headers['content-location'])) { |
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| 449 | if ($mail_part->headers['content-id']) |
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| 450 | $mail_part->content_id = preg_replace(array('/^</', '/>$/'), '', $mail_part->headers['content-id']); |
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| 451 | if ($mail_part->headers['content-location']) |
|---|
| 452 | $mail_part->content_location = $mail_part->headers['content-base'] . $mail_part->headers['content-location']; |
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| 453 | |
|---|
| 454 | $this->inline_parts[] = $mail_part; |
|---|
| 455 | } |
|---|
| 456 | // attachment encapsulated within message/rfc822 part needs further decoding (#1486743) |
|---|
| 457 | else if ($part_orig_mimetype == 'message/rfc822') { |
|---|
| 458 | $this->parse_structure($mail_part, true); |
|---|
| 459 | } |
|---|
| 460 | // is a regular attachment |
|---|
| 461 | else if (preg_match('!^[a-z0-9-.+]+/[a-z0-9-.+]+$!i', $part_mimetype)) { |
|---|
| 462 | if (!$mail_part->filename) |
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| 463 | $mail_part->filename = 'Part '.$mail_part->mime_id; |
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| 464 | $this->attachments[] = $mail_part; |
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| 465 | } |
|---|
| 466 | } |
|---|
| 467 | } |
|---|
| 468 | |
|---|
| 469 | // if this was a related part try to resolve references |
|---|
| 470 | if ($mimetype == 'multipart/related' && sizeof($this->inline_parts)) { |
|---|
| 471 | $a_replaces = array(); |
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| 472 | |
|---|
| 473 | foreach ($this->inline_parts as $inline_object) { |
|---|
| 474 | $part_url = $this->get_part_url($inline_object->mime_id); |
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| 475 | if ($inline_object->content_id) |
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| 476 | $a_replaces['cid:'.$inline_object->content_id] = $part_url; |
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| 477 | if ($inline_object->content_location) |
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| 478 | $a_replaces[$inline_object->content_location] = $part_url; |
|---|
| 479 | } |
|---|
| 480 | |
|---|
| 481 | // add replace array to each content part |
|---|
| 482 | // (will be applied later when part body is available) |
|---|
| 483 | foreach ($this->parts as $i => $part) { |
|---|
| 484 | if ($part->type == 'content') |
|---|
| 485 | $this->parts[$i]->replaces = $a_replaces; |
|---|
| 486 | } |
|---|
| 487 | } |
|---|
| 488 | } |
|---|
| 489 | // message is a single part non-text |
|---|
| 490 | else if ($structure->filename) { |
|---|
| 491 | $this->attachments[] = $structure; |
|---|
| 492 | } |
|---|
| 493 | // message is a single part non-text (without filename) |
|---|
| 494 | else if (preg_match('/application\//i', $mimetype)) { |
|---|
| 495 | $structure->filename = 'Part '.$structure->mime_id; |
|---|
| 496 | $this->attachments[] = $structure; |
|---|
| 497 | } |
|---|
| 498 | } |
|---|
| 499 | |
|---|
| 500 | |
|---|
| 501 | /** |
|---|
| 502 | * Fill aflat array with references to all parts, indexed by part numbers |
|---|
| 503 | * |
|---|
| 504 | * @param object rcube_message_part Message body structure |
|---|
| 505 | */ |
|---|
| 506 | private function get_mime_numbers(&$part) |
|---|
| 507 | { |
|---|
| 508 | if (strlen($part->mime_id)) |
|---|
| 509 | $this->mime_parts[$part->mime_id] = &$part; |
|---|
| 510 | |
|---|
| 511 | if (is_array($part->parts)) |
|---|
| 512 | for ($i=0; $i<count($part->parts); $i++) |
|---|
| 513 | $this->get_mime_numbers($part->parts[$i]); |
|---|
| 514 | } |
|---|
| 515 | |
|---|
| 516 | |
|---|
| 517 | /** |
|---|
| 518 | * Decode a Microsoft Outlook TNEF part (winmail.dat) |
|---|
| 519 | * |
|---|
| 520 | * @param object rcube_message_part Message part to decode |
|---|
| 521 | */ |
|---|
| 522 | function tnef_decode(&$part) |
|---|
| 523 | { |
|---|
| 524 | // @TODO: attachment may be huge, hadle it via file |
|---|
| 525 | if (!isset($part->body)) |
|---|
| 526 | $part->body = $this->imap->get_message_part($this->uid, $part->mime_id, $part); |
|---|
| 527 | |
|---|
| 528 | $parts = array(); |
|---|
| 529 | $tnef = new tnef_decoder; |
|---|
| 530 | $tnef_arr = $tnef->decompress($part->body); |
|---|
| 531 | |
|---|
| 532 | foreach ($tnef_arr as $pid => $winatt) { |
|---|
| 533 | $tpart = new rcube_message_part; |
|---|
| 534 | |
|---|
| 535 | $tpart->filename = trim($winatt['name']); |
|---|
| 536 | $tpart->encoding = 'stream'; |
|---|
| 537 | $tpart->ctype_primary = trim(strtolower($winatt['type'])); |
|---|
| 538 | $tpart->ctype_secondary = trim(strtolower($winatt['subtype'])); |
|---|
| 539 | $tpart->mimetype = $tpart->ctype_primary . '/' . $tpart->ctype_secondary; |
|---|
| 540 | $tpart->mime_id = 'winmail.' . $part->mime_id . '.' . $pid; |
|---|
| 541 | $tpart->size = $winatt['size']; |
|---|
| 542 | $tpart->body = $winatt['stream']; |
|---|
| 543 | |
|---|
| 544 | $parts[] = $tpart; |
|---|
| 545 | unset($tnef_arr[$pid]); |
|---|
| 546 | } |
|---|
| 547 | |
|---|
| 548 | return $parts; |
|---|
| 549 | } |
|---|
| 550 | |
|---|
| 551 | |
|---|
| 552 | /** |
|---|
| 553 | * Parse message body for UUencoded attachments bodies |
|---|
| 554 | * |
|---|
| 555 | * @param object rcube_message_part Message part to decode |
|---|
| 556 | */ |
|---|
| 557 | function uu_decode(&$part) |
|---|
| 558 | { |
|---|
| 559 | // @TODO: messages may be huge, hadle body via file |
|---|
| 560 | if (!isset($part->body)) |
|---|
| 561 | $part->body = $this->imap->get_message_part($this->uid, $part->mime_id, $part); |
|---|
| 562 | |
|---|
| 563 | $parts = array(); |
|---|
| 564 | // FIXME: line length is max.65? |
|---|
| 565 | $uu_regexp = '/begin [0-7]{3,4} ([^\n]+)\n(([\x21-\x7E]{0,65}\n)+)`\nend/s'; |
|---|
| 566 | |
|---|
| 567 | if (preg_match_all($uu_regexp, $part->body, $matches, PREG_SET_ORDER)) { |
|---|
| 568 | // remove attachments bodies from the message body |
|---|
| 569 | $part->body = preg_replace($uu_regexp, '', $part->body); |
|---|
| 570 | // update message content-type |
|---|
| 571 | $part->ctype_primary = 'multipart'; |
|---|
| 572 | $part->ctype_secondary = 'mixed'; |
|---|
| 573 | $part->mimetype = $part->ctype_primary . '/' . $part->ctype_secondary; |
|---|
| 574 | |
|---|
| 575 | // add attachments to the structure |
|---|
| 576 | foreach ($matches as $pid => $att) { |
|---|
| 577 | $uupart = new rcube_message_part; |
|---|
| 578 | |
|---|
| 579 | $uupart->filename = trim($att[1]); |
|---|
| 580 | $uupart->encoding = 'stream'; |
|---|
| 581 | $uupart->body = convert_uudecode($att[2]); |
|---|
| 582 | $uupart->size = strlen($uupart->body); |
|---|
| 583 | $uupart->mime_id = 'uu.' . $part->mime_id . '.' . $pid; |
|---|
| 584 | |
|---|
| 585 | $ctype = rc_mime_content_type($uupart->body, $uupart->filename, 'application/octet-stream', true); |
|---|
| 586 | $uupart->mimetype = $ctype; |
|---|
| 587 | list($uupart->ctype_primary, $uupart->ctype_secondary) = explode('/', $ctype); |
|---|
| 588 | |
|---|
| 589 | $parts[] = $uupart; |
|---|
| 590 | unset($matches[$pid]); |
|---|
| 591 | } |
|---|
| 592 | } |
|---|
| 593 | |
|---|
| 594 | return $parts; |
|---|
| 595 | } |
|---|
| 596 | |
|---|
| 597 | |
|---|
| 598 | /** |
|---|
| 599 | * Interpret a format=flowed message body according to RFC 2646 |
|---|
| 600 | * |
|---|
| 601 | * @param string Raw body formatted as flowed text |
|---|
| 602 | * @return string Interpreted text with unwrapped lines and stuffed space removed |
|---|
| 603 | */ |
|---|
| 604 | public static function unfold_flowed($text) |
|---|
| 605 | { |
|---|
| 606 | $text = preg_split('/\r?\n/', $text); |
|---|
| 607 | $last = -1; |
|---|
| 608 | $q_level = 0; |
|---|
| 609 | |
|---|
| 610 | foreach ($text as $idx => $line) { |
|---|
| 611 | if ($line[0] == '>' && preg_match('/^(>+\s*)/', $line, $regs)) { |
|---|
| 612 | $q = strlen(str_replace(' ', '', $regs[0])); |
|---|
| 613 | $line = substr($line, strlen($regs[0])); |
|---|
| 614 | |
|---|
| 615 | if ($q == $q_level && $line |
|---|
| 616 | && isset($text[$last]) |
|---|
| 617 | && $text[$last][strlen($text[$last])-1] == ' ' |
|---|
| 618 | ) { |
|---|
| 619 | $text[$last] .= $line; |
|---|
| 620 | unset($text[$idx]); |
|---|
| 621 | } |
|---|
| 622 | else { |
|---|
| 623 | $last = $idx; |
|---|
| 624 | } |
|---|
| 625 | } |
|---|
| 626 | else { |
|---|
| 627 | $q = 0; |
|---|
| 628 | if ($line == '-- ') { |
|---|
| 629 | $last = $idx; |
|---|
| 630 | } |
|---|
| 631 | else { |
|---|
| 632 | // remove space-stuffing |
|---|
| 633 | $line = preg_replace('/^\s/', '', $line); |
|---|
| 634 | |
|---|
| 635 | if (isset($text[$last]) && $line |
|---|
| 636 | && $text[$last] != '-- ' |
|---|
| 637 | && $text[$last][strlen($text[$last])-1] == ' ' |
|---|
| 638 | ) { |
|---|
| 639 | $text[$last] .= $line; |
|---|
| 640 | unset($text[$idx]); |
|---|
| 641 | } |
|---|
| 642 | else { |
|---|
| 643 | $text[$idx] = $line; |
|---|
| 644 | $last = $idx; |
|---|
| 645 | } |
|---|
| 646 | } |
|---|
| 647 | } |
|---|
| 648 | $q_level = $q; |
|---|
| 649 | } |
|---|
| 650 | |
|---|
| 651 | return implode("\r\n", $text); |
|---|
| 652 | } |
|---|
| 653 | |
|---|
| 654 | |
|---|
| 655 | /** |
|---|
| 656 | * Wrap the given text to comply with RFC 2646 |
|---|
| 657 | */ |
|---|
| 658 | public static function format_flowed($text, $length = 72) |
|---|
| 659 | { |
|---|
| 660 | $text = preg_split('/\r?\n/', $text); |
|---|
| 661 | |
|---|
| 662 | foreach ($text as $idx => $line) { |
|---|
| 663 | if ($line != '-- ') { |
|---|
| 664 | if ($line[0] == '>' && preg_match('/^(>+)/', $line, $regs)) { |
|---|
| 665 | $prefix = $regs[0]; |
|---|
| 666 | $level = strlen($prefix); |
|---|
| 667 | $line = rtrim(substr($line, $level)); |
|---|
| 668 | $line = $prefix . rc_wordwrap($line, $length - $level - 2, " \r\n$prefix "); |
|---|
| 669 | } |
|---|
| 670 | else { |
|---|
| 671 | $line = ' ' . rc_wordwrap(rtrim($line), $length - 2, " \r\n "); |
|---|
| 672 | } |
|---|
| 673 | |
|---|
| 674 | $text[$idx] = $line; |
|---|
| 675 | } |
|---|
| 676 | } |
|---|
| 677 | |
|---|
| 678 | return implode("\r\n", $text); |
|---|
| 679 | } |
|---|
| 680 | |
|---|
| 681 | } |
|---|
