From ba6f21caeb405c7e8512a09941fefbc97286e45f Mon Sep 17 00:00:00 2001 From: Aleksander Machniak Date: Wed, 21 Nov 2012 19:52:03 +0100 Subject: Framework files moved to lib/Roundcube --- program/lib/Roundcube/rcube_message.php | 758 ++++++++++++++++++++++++++++++++ 1 file changed, 758 insertions(+) create mode 100644 program/lib/Roundcube/rcube_message.php (limited to 'program/lib/Roundcube/rcube_message.php') diff --git a/program/lib/Roundcube/rcube_message.php b/program/lib/Roundcube/rcube_message.php new file mode 100644 index 000000000..87319f04f --- /dev/null +++ b/program/lib/Roundcube/rcube_message.php @@ -0,0 +1,758 @@ + | + +-----------------------------------------------------------------------+ +*/ + + +/** + * Logical representation of a mail message with all its data + * and related functions + * + * @package Framework + * @subpackage Storage + * @author Thomas Bruederli + */ +class rcube_message +{ + /** + * Instace of framework class. + * + * @var rcube + */ + private $app; + + /** + * Instance of storage class + * + * @var rcube_storage + */ + private $storage; + + /** + * Instance of mime class + * + * @var rcube_mime + */ + private $mime; + private $opt = array(); + private $parse_alternative = false; + + public $uid; + public $folder; + public $headers; + public $parts = array(); + public $mime_parts = array(); + public $inline_parts = array(); + public $attachments = array(); + public $subject = ''; + public $sender = null; + public $is_safe = false; + + + /** + * __construct + * + * Provide a uid, and parse message structure. + * + * @param string $uid The message UID. + * @param string $folder Folder name + * + * @see self::$app, self::$storage, self::$opt, self::$parts + */ + function __construct($uid, $folder = null) + { + $this->uid = $uid; + $this->app = rcube::get_instance(); + $this->storage = $this->app->get_storage(); + $this->folder = strlen($folder) ? $folder : $this->storage->get_folder(); + $this->storage->set_options(array('all_headers' => true)); + + // Set current folder + $this->storage->set_folder($this->folder); + + $this->headers = $this->storage->get_message($uid); + + if (!$this->headers) + return; + + $this->mime = new rcube_mime($this->headers->charset); + + $this->subject = $this->mime->decode_mime_string($this->headers->subject); + list(, $this->sender) = each($this->mime->decode_address_list($this->headers->from, 1)); + + $this->set_safe((intval($_GET['_safe']) || $_SESSION['safe_messages'][$uid])); + $this->opt = array( + 'safe' => $this->is_safe, + 'prefer_html' => $this->app->config->get('prefer_html'), + 'get_url' => $this->app->url(array( + 'action' => 'get', + 'mbox' => $this->storage->get_folder(), + 'uid' => $uid)) + ); + + if (!empty($this->headers->structure)) { + $this->get_mime_numbers($this->headers->structure); + $this->parse_structure($this->headers->structure); + } + else { + $this->body = $this->storage->get_body($uid); + } + + // notify plugins and let them analyze this structured message object + $this->app->plugins->exec_hook('message_load', array('object' => $this)); + } + + + /** + * Return a (decoded) message header + * + * @param string $name Header name + * @param bool $row Don't mime-decode the value + * @return string Header value + */ + public function get_header($name, $raw = false) + { + if (empty($this->headers)) + return null; + + if ($this->headers->$name) + $value = $this->headers->$name; + else if ($this->headers->others[$name]) + $value = $this->headers->others[$name]; + + return $raw ? $value : $this->mime->decode_header($value); + } + + + /** + * Set is_safe var and session data + * + * @param bool $safe enable/disable + */ + public function set_safe($safe = true) + { + $this->is_safe = $safe; + $_SESSION['safe_messages'][$this->uid] = $this->is_safe; + } + + + /** + * Compose a valid URL for getting a message part + * + * @param string $mime_id Part MIME-ID + * @return string URL or false if part does not exist + */ + public function get_part_url($mime_id, $embed = false) + { + if ($this->mime_parts[$mime_id]) + return $this->opt['get_url'] . '&_part=' . $mime_id . ($embed ? '&_embed=1' : ''); + else + return false; + } + + + /** + * Get content of a specific part of this message + * + * @param string $mime_id Part MIME-ID + * @param resource $fp File pointer to save the message part + * @param boolean $skip_charset_conv Disables charset conversion + * + * @return string Part content + */ + public function get_part_content($mime_id, $fp = null, $skip_charset_conv = false) + { + if ($part = $this->mime_parts[$mime_id]) { + // stored in message structure (winmail/inline-uuencode) + if (!empty($part->body) || $part->encoding == 'stream') { + if ($fp) { + fwrite($fp, $part->body); + } + return $fp ? true : $part->body; + } + + // get from IMAP + $this->storage->set_folder($this->folder); + + return $this->storage->get_message_part($this->uid, $mime_id, $part, NULL, $fp, $skip_charset_conv); + } + } + + + /** + * Determine if the message contains a HTML part + * + * @param bool $recursive Enables checking in all levels of the structure + * @param bool $enriched Enables checking for text/enriched parts too + * + * @return bool True if a HTML is available, False if not + */ + function has_html_part($recursive = true, $enriched = false) + { + // check all message parts + foreach ($this->parts as $part) { + if ($part->mimetype == 'text/html' || ($enriched && $part->mimetype == 'text/enriched')) { + // Level check, we'll skip e.g. HTML attachments + if (!$recursive) { + $level = explode('.', $part->mime_id); + + // Skip if level too deep or part has a file name + if (count($level) > 2 || $part->filename) { + continue; + } + + // HTML part can be on the lower level, if not... + if (count($level) > 1) { + array_pop($level); + $parent = $this->mime_parts[join('.', $level)]; + // ... parent isn't multipart/alternative or related + if ($parent->mimetype != 'multipart/alternative' && $parent->mimetype != 'multipart/related') { + continue; + } + } + } + + return true; + } + } + + return false; + } + + + /** + * Return the first HTML part of this message + * + * @return string HTML message part content + */ + function first_html_part() + { + // check all message parts + foreach ($this->mime_parts as $pid => $part) { + if ($part->mimetype == 'text/html') { + return $this->get_part_content($pid); + } + } + } + + + /** + * Return the first text part of this message + * + * @param rcube_message_part $part Reference to the part if found + * @return string Plain text message/part content + */ + function first_text_part(&$part=null) + { + // no message structure, return complete body + if (empty($this->parts)) + return $this->body; + + // check all message parts + foreach ($this->mime_parts as $mime_id => $part) { + if ($part->mimetype == 'text/plain') { + return $this->get_part_content($mime_id); + } + else if ($part->mimetype == 'text/html') { + $out = $this->get_part_content($mime_id); + + // create instance of html2text class + $txt = new html2text($out); + return $txt->get_text(); + } + } + + $part = null; + return null; + } + + + /** + * Checks if part of the message is an attachment (or part of it) + * + * @param rcube_message_part $part Message part + * + * @return bool True if the part is an attachment part + */ + public function is_attachment($part) + { + foreach ($this->attachments as $att_part) { + if ($att_part->mime_id == $part->mime_id) { + return true; + } + + // check if the part is a subpart of another attachment part (message/rfc822) + if ($att_part->mimetype == 'message/rfc822') { + if (in_array($part, (array)$att_part->parts)) { + return true; + } + } + } + + return false; + } + + + /** + * Read the message structure returend by the IMAP server + * and build flat lists of content parts and attachments + * + * @param rcube_message_part $structure Message structure node + * @param bool $recursive True when called recursively + */ + private function parse_structure($structure, $recursive = false) + { + // real content-type of message/rfc822 part + if ($structure->mimetype == 'message/rfc822' && $structure->real_mimetype) + $mimetype = $structure->real_mimetype; + else + $mimetype = $structure->mimetype; + + // show message headers + if ($recursive && is_array($structure->headers) && isset($structure->headers['subject'])) { + $c = new stdClass; + $c->type = 'headers'; + $c->headers = &$structure->headers; + $this->parts[] = $c; + } + + // Allow plugins to handle message parts + $plugin = $this->app->plugins->exec_hook('message_part_structure', + array('object' => $this, 'structure' => $structure, + 'mimetype' => $mimetype, 'recursive' => $recursive)); + + if ($plugin['abort']) + return; + + $structure = $plugin['structure']; + list($message_ctype_primary, $message_ctype_secondary) = explode('/', $plugin['mimetype']); + + // print body if message doesn't have multiple parts + if ($message_ctype_primary == 'text' && !$recursive) { + $structure->type = 'content'; + $this->parts[] = &$structure; + + // Parse simple (plain text) message body + if ($message_ctype_secondary == 'plain') + foreach ((array)$this->uu_decode($structure) as $uupart) { + $this->mime_parts[$uupart->mime_id] = $uupart; + $this->attachments[] = $uupart; + } + } + // the same for pgp signed messages + else if ($mimetype == 'application/pgp' && !$recursive) { + $structure->type = 'content'; + $this->parts[] = &$structure; + } + // message contains (more than one!) alternative parts + else if ($mimetype == 'multipart/alternative' + && is_array($structure->parts) && count($structure->parts) > 1 + ) { + // get html/plaintext parts + $plain_part = $html_part = $print_part = $related_part = null; + + foreach ($structure->parts as $p => $sub_part) { + $sub_mimetype = $sub_part->mimetype; + + // skip empty text parts + if (!$sub_part->size && preg_match('#^text/(plain|html|enriched)$#', $sub_mimetype)) { + continue; + } + + // check if sub part is + if ($sub_mimetype == 'text/plain') + $plain_part = $p; + else if ($sub_mimetype == 'text/html') + $html_part = $p; + else if ($sub_mimetype == 'text/enriched') + $enriched_part = $p; + else if (in_array($sub_mimetype, array('multipart/related', 'multipart/mixed', 'multipart/alternative'))) + $related_part = $p; + } + + // parse related part (alternative part could be in here) + if ($related_part !== null && !$this->parse_alternative) { + $this->parse_alternative = true; + $this->parse_structure($structure->parts[$related_part], true); + $this->parse_alternative = false; + + // if plain part was found, we should unset it if html is preferred + if ($this->opt['prefer_html'] && count($this->parts)) + $plain_part = null; + } + + // choose html/plain part to print + if ($html_part !== null && $this->opt['prefer_html']) { + $print_part = &$structure->parts[$html_part]; + } + else if ($enriched_part !== null) { + $print_part = &$structure->parts[$enriched_part]; + } + else if ($plain_part !== null) { + $print_part = &$structure->parts[$plain_part]; + } + + // add the right message body + if (is_object($print_part)) { + $print_part->type = 'content'; + $this->parts[] = $print_part; + } + // show plaintext warning + else if ($html_part !== null && empty($this->parts)) { + $c = new stdClass; + $c->type = 'content'; + $c->ctype_primary = 'text'; + $c->ctype_secondary = 'plain'; + $c->mimetype = 'text/plain'; + $c->realtype = 'text/html'; + + $this->parts[] = $c; + } + + // add html part as attachment + if ($html_part !== null && $structure->parts[$html_part] !== $print_part) { + $html_part = &$structure->parts[$html_part]; + $html_part->mimetype = 'text/html'; + + $this->attachments[] = $html_part; + } + } + // this is an ecrypted message -> create a plaintext body with the according message + else if ($mimetype == 'multipart/encrypted') { + $p = new stdClass; + $p->type = 'content'; + $p->ctype_primary = 'text'; + $p->ctype_secondary = 'plain'; + $p->mimetype = 'text/plain'; + $p->realtype = 'multipart/encrypted'; + + $this->parts[] = $p; + } + // message contains multiple parts + else if (is_array($structure->parts) && !empty($structure->parts)) { + // iterate over parts + for ($i=0; $i < count($structure->parts); $i++) { + $mail_part = &$structure->parts[$i]; + $primary_type = $mail_part->ctype_primary; + $secondary_type = $mail_part->ctype_secondary; + + // real content-type of message/rfc822 + if ($mail_part->real_mimetype) { + $part_orig_mimetype = $mail_part->mimetype; + $part_mimetype = $mail_part->real_mimetype; + list($primary_type, $secondary_type) = explode('/', $part_mimetype); + } + else + $part_mimetype = $mail_part->mimetype; + + // multipart/alternative + if ($primary_type == 'multipart') { + $this->parse_structure($mail_part, true); + + // list message/rfc822 as attachment as well (mostly .eml) + if ($part_orig_mimetype == 'message/rfc822' && !empty($mail_part->filename)) + $this->attachments[] = $mail_part; + } + // part text/[plain|html] or delivery status + else if ((($part_mimetype == 'text/plain' || $part_mimetype == 'text/html') && $mail_part->disposition != 'attachment') || + in_array($part_mimetype, array('message/delivery-status', 'text/rfc822-headers', 'message/disposition-notification')) + ) { + // Allow plugins to handle also this part + $plugin = $this->app->plugins->exec_hook('message_part_structure', + array('object' => $this, 'structure' => $mail_part, + 'mimetype' => $part_mimetype, 'recursive' => true)); + + if ($plugin['abort']) + continue; + + if ($part_mimetype == 'text/html' && $mail_part->size) { + $got_html_part = true; + } + + $mail_part = $plugin['structure']; + list($primary_type, $secondary_type) = explode('/', $plugin['mimetype']); + + // add text part if it matches the prefs + if (!$this->parse_alternative || + ($secondary_type == 'html' && $this->opt['prefer_html']) || + ($secondary_type == 'plain' && !$this->opt['prefer_html']) + ) { + $mail_part->type = 'content'; + $this->parts[] = $mail_part; + } + + // list as attachment as well + if (!empty($mail_part->filename)) { + $this->attachments[] = $mail_part; + } + // list html part as attachment (here the part is most likely inside a multipart/related part) + else if ($this->parse_alternative && ($secondary_type == 'html' && !$this->opt['prefer_html'])) { + $this->attachments[] = $mail_part; + } + } + // part message/* + else if ($primary_type == 'message') { + $this->parse_structure($mail_part, true); + + // list as attachment as well (mostly .eml) + if (!empty($mail_part->filename)) + $this->attachments[] = $mail_part; + } + // ignore "virtual" protocol parts + else if ($primary_type == 'protocol') { + continue; + } + // part is Microsoft Outlook TNEF (winmail.dat) + else if ($part_mimetype == 'application/ms-tnef') { + foreach ((array)$this->tnef_decode($mail_part) as $tpart) { + $this->mime_parts[$tpart->mime_id] = $tpart; + $this->attachments[] = $tpart; + } + } + // part is a file/attachment + else if (preg_match('/^(inline|attach)/', $mail_part->disposition) || + $mail_part->headers['content-id'] || + ($mail_part->filename && + (empty($mail_part->disposition) || preg_match('/^[a-z0-9!#$&.+^_-]+$/i', $mail_part->disposition))) + ) { + // skip apple resource forks + if ($message_ctype_secondary == 'appledouble' && $secondary_type == 'applefile') + continue; + + // part belongs to a related message and is linked + if ($mimetype == 'multipart/related' + && ($mail_part->headers['content-id'] || $mail_part->headers['content-location'])) { + if ($mail_part->headers['content-id']) + $mail_part->content_id = preg_replace(array('/^$/'), '', $mail_part->headers['content-id']); + if ($mail_part->headers['content-location']) + $mail_part->content_location = $mail_part->headers['content-base'] . $mail_part->headers['content-location']; + + $this->inline_parts[] = $mail_part; + } + // attachment encapsulated within message/rfc822 part needs further decoding (#1486743) + else if ($part_orig_mimetype == 'message/rfc822') { + $this->parse_structure($mail_part, true); + + // list as attachment as well (mostly .eml) + if (!empty($mail_part->filename)) + $this->attachments[] = $mail_part; + } + // regular attachment with valid content type + // (content-type name regexp according to RFC4288.4.2) + else if (preg_match('/^[a-z0-9!#$&.+^_-]+\/[a-z0-9!#$&.+^_-]+$/i', $part_mimetype)) { + if (!$mail_part->filename) + $mail_part->filename = 'Part '.$mail_part->mime_id; + + $this->attachments[] = $mail_part; + } + // attachment with invalid content type + // replace malformed content type with application/octet-stream (#1487767) + else if ($mail_part->filename) { + $mail_part->ctype_primary = 'application'; + $mail_part->ctype_secondary = 'octet-stream'; + $mail_part->mimetype = 'application/octet-stream'; + + $this->attachments[] = $mail_part; + } + } + // attachment part as message/rfc822 (#1488026) + else if ($mail_part->mimetype == 'message/rfc822') { + $this->parse_structure($mail_part); + } + } + + // if this was a related part try to resolve references + if ($mimetype == 'multipart/related' && sizeof($this->inline_parts)) { + $a_replaces = array(); + $img_regexp = '/^image\/(gif|jpe?g|png|tiff|bmp|svg)/'; + + foreach ($this->inline_parts as $inline_object) { + $part_url = $this->get_part_url($inline_object->mime_id, true); + if ($inline_object->content_id) + $a_replaces['cid:'.$inline_object->content_id] = $part_url; + if ($inline_object->content_location) { + $a_replaces[$inline_object->content_location] = $part_url; + } + + if (!empty($inline_object->filename)) { + // MS Outlook sends sometimes non-related attachments as related + // In this case multipart/related message has only one text part + // We'll add all such attachments to the attachments list + if (!isset($got_html_part) && empty($inline_object->content_id)) { + $this->attachments[] = $inline_object; + } + // MS Outlook sometimes also adds non-image attachments as related + // We'll add all such attachments to the attachments list + // Warning: some browsers support pdf in + else if (!preg_match($img_regexp, $inline_object->mimetype)) { + $this->attachments[] = $inline_object; + } + // @TODO: we should fetch HTML body and find attachment's content-id + // to handle also image attachments without reference in the body + // @TODO: should we list all image attachments in text mode? + } + } + + // add replace array to each content part + // (will be applied later when part body is available) + foreach ($this->parts as $i => $part) { + if ($part->type == 'content') + $this->parts[$i]->replaces = $a_replaces; + } + } + } + // message is a single part non-text + else if ($structure->filename) { + $this->attachments[] = $structure; + } + // message is a single part non-text (without filename) + else if (preg_match('/application\//i', $mimetype)) { + $structure->filename = 'Part '.$structure->mime_id; + $this->attachments[] = $structure; + } + } + + + /** + * Fill aflat array with references to all parts, indexed by part numbers + * + * @param rcube_message_part $part Message body structure + */ + private function get_mime_numbers(&$part) + { + if (strlen($part->mime_id)) + $this->mime_parts[$part->mime_id] = &$part; + + if (is_array($part->parts)) + for ($i=0; $iparts); $i++) + $this->get_mime_numbers($part->parts[$i]); + } + + + /** + * Decode a Microsoft Outlook TNEF part (winmail.dat) + * + * @param rcube_message_part $part Message part to decode + * @return array + */ + function tnef_decode(&$part) + { + // @TODO: attachment may be huge, hadle it via file + if (!isset($part->body)) { + $this->storage->set_folder($this->folder); + $part->body = $this->storage->get_message_part($this->uid, $part->mime_id, $part); + } + + $parts = array(); + $tnef = new tnef_decoder; + $tnef_arr = $tnef->decompress($part->body); + + foreach ($tnef_arr as $pid => $winatt) { + $tpart = new rcube_message_part; + + $tpart->filename = trim($winatt['name']); + $tpart->encoding = 'stream'; + $tpart->ctype_primary = trim(strtolower($winatt['type'])); + $tpart->ctype_secondary = trim(strtolower($winatt['subtype'])); + $tpart->mimetype = $tpart->ctype_primary . '/' . $tpart->ctype_secondary; + $tpart->mime_id = 'winmail.' . $part->mime_id . '.' . $pid; + $tpart->size = $winatt['size']; + $tpart->body = $winatt['stream']; + + $parts[] = $tpart; + unset($tnef_arr[$pid]); + } + + return $parts; + } + + + /** + * Parse message body for UUencoded attachments bodies + * + * @param rcube_message_part $part Message part to decode + * @return array + */ + function uu_decode(&$part) + { + // @TODO: messages may be huge, hadle body via file + if (!isset($part->body)) { + $this->storage->set_folder($this->folder); + $part->body = $this->storage->get_message_part($this->uid, $part->mime_id, $part); + } + + $parts = array(); + // FIXME: line length is max.65? + $uu_regexp = '/begin [0-7]{3,4} ([^\n]+)\n/s'; + + if (preg_match_all($uu_regexp, $part->body, $matches, PREG_SET_ORDER)) { + // update message content-type + $part->ctype_primary = 'multipart'; + $part->ctype_secondary = 'mixed'; + $part->mimetype = $part->ctype_primary . '/' . $part->ctype_secondary; + $uu_endstring = "`\nend\n"; + + // add attachments to the structure + foreach ($matches as $pid => $att) { + $startpos = strpos($part->body, $att[1]) + strlen($att[1]) + 1; // "\n" + $endpos = strpos($part->body, $uu_endstring); + $filebody = substr($part->body, $startpos, $endpos-$startpos); + + // remove attachments bodies from the message body + $part->body = substr_replace($part->body, "", $startpos, $endpos+strlen($uu_endstring)-$startpos); + + $uupart = new rcube_message_part; + + $uupart->filename = trim($att[1]); + $uupart->encoding = 'stream'; + $uupart->body = convert_uudecode($filebody); + $uupart->size = strlen($uupart->body); + $uupart->mime_id = 'uu.' . $part->mime_id . '.' . $pid; + + $ctype = rcube_mime::content_type($uupart->body, $uupart->filename, 'application/octet-stream', true); + $uupart->mimetype = $ctype; + list($uupart->ctype_primary, $uupart->ctype_secondary) = explode('/', $ctype); + + $parts[] = $uupart; + unset($matches[$pid]); + } + + // remove attachments bodies from the message body + $part->body = preg_replace($uu_regexp, '', $part->body); + } + + return $parts; + } + + + /** + * Deprecated methods (to be removed) + */ + + public static function unfold_flowed($text) + { + return rcube_mime::unfold_flowed($text); + } + + public static function format_flowed($text, $length = 72) + { + return rcube_mime::format_flowed($text, $length); + } + +} -- cgit v1.2.3