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authorAleksander Machniak <alec@alec.pl>2014-10-22 14:29:44 +0200
committerAleksander Machniak <alec@alec.pl>2014-10-22 14:29:44 +0200
commit48ba4414b33c8982f8232b06f06d68f3213aa986 (patch)
treec36c555e1e2cca6cfe1fdd12018da05b648798b9 /program
parente2251db1d5b536f61fe7db57b96a9601465bd139 (diff)
Fix download of attachments that are part of TNEF message (#1490091)
Rcube_message_part::body content should never be modified by code out of the rcube_message. Added convenient rcube_message::get_part_body() method, making rcube_message::get_part_content() deprecated.
Diffstat (limited to 'program')
-rw-r--r--program/lib/Roundcube/rcube_message.php220
-rw-r--r--program/steps/mail/compose.inc16
-rw-r--r--program/steps/mail/func.inc32
-rw-r--r--program/steps/mail/get.inc40
4 files changed, 208 insertions, 100 deletions
diff --git a/program/lib/Roundcube/rcube_message.php b/program/lib/Roundcube/rcube_message.php
index a648ae722..a00f6bfa5 100644
--- a/program/lib/Roundcube/rcube_message.php
+++ b/program/lib/Roundcube/rcube_message.php
@@ -3,7 +3,7 @@
/*
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
- | Copyright (C) 2008-2010, The Roundcube Dev Team |
+ | Copyright (C) 2008-2014, The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
@@ -61,6 +61,8 @@ class rcube_message
public $sender = null;
public $is_safe = false;
+ const BODY_MAX_SIZE = 1048576; // 1MB
+
/**
* __construct
@@ -176,6 +178,7 @@ class rcube_message
* @param boolean $formatted Enables formatting of text/* parts bodies
*
* @return string Part content
+ * @deprecated
*/
public function get_part_content($mime_id, $fp = null, $skip_charset_conv = false, $max_bytes = 0, $formatted = true)
{
@@ -198,6 +201,125 @@ class rcube_message
/**
+ * Get content of a specific part of this message
+ *
+ * @param string $mime_id Part ID
+ * @param boolean $formatted Enables formatting of text/* parts bodies
+ * @param int $max_bytes Only return/read this number of bytes
+ * @param mixed $mode NULL to return a string, -1 to print body
+ * or file pointer to save the body into
+ *
+ * @return string|bool Part content or operation status
+ */
+ public function get_part_body($mime_id, $formatted = false, $max_bytes = 0, $mode = null)
+ {
+ if (!($part = $this->mime_parts[$mime_id])) {
+ return;
+ }
+
+ // only text parts can be formatted
+ $formatted = $formatted && $part->ctype_primary == 'text';
+
+ // part body not fetched yet... save in memory if it's small enough
+ if ($part->body === null && is_numeric($mime_id) && $part->size < self::BODY_MAX_SIZE) {
+ // Warning: body here should be always unformatted
+ $part->body = $this->storage->get_message_part($this->uid, $mime_id, $part,
+ null, null, true, 0, false);
+ }
+
+ // body stored in message structure (winmail/inline-uuencode)
+ if ($part->body !== null || $part->encoding == 'stream') {
+ $body = $part->body;
+
+ if ($formatted && $body) {
+ $body = self::format_part_body($body, $part, $this->headers->charset);
+ }
+
+ if ($max_bytes && strlen($body) > $max_bytes) {
+ $body = substr($body, 0, $max_bytes);
+ }
+
+ if (is_resource($mode)) {
+ if ($body !== false) {
+ fwrite($mode, $body);
+ rewind($mode);
+ }
+
+ return $body !== false;
+ }
+
+ if ($mode === -1) {
+ if ($body !== false) {
+ print($body);
+ }
+
+ return $body !== false;
+ }
+
+ return $body;
+ }
+
+ // get the body from IMAP
+ $this->storage->set_folder($this->folder);
+
+ $body = $this->storage->get_message_part($this->uid, $mime_id, $part,
+ $mode === -1, is_resource($mode) ? $mode : null, !$formatted, $max_bytes, $formatted);
+
+ if (!$mode && $body && $formatted) {
+ $body = self::format_part_body($body, $part, $this->headers->charset);
+ }
+
+ if (is_resource($mode)) {
+ rewind($mode);
+ return $body !== false;
+ }
+
+ return $body;
+ }
+
+
+ /**
+ * Format text message part for display
+ *
+ * @param string $body Part body
+ * @param rcube_message_part $part Part object
+ * @param string $default_charset Fallback charset if part charset is not specified
+ *
+ * @return string Formatted body
+ */
+ public static function format_part_body($body, $part, $default_charset = null)
+ {
+ // remove useless characters
+ $body = preg_replace('/[\t\r\0\x0B]+\n/', "\n", $body);
+
+ // remove NULL characters if any (#1486189)
+ if (strpos($body, "\x00") !== false) {
+ $body = str_replace("\x00", '', $body);
+ }
+
+ // detect charset...
+ if (!$part->charset || strtoupper($part->charset) == 'US-ASCII') {
+ // try to extract charset information from HTML meta tag (#1488125)
+ if ($part->ctype_secondary == 'html' && preg_match('/<meta[^>]+charset=([a-z0-9-_]+)/i', $body, $m)) {
+ $part->charset = strtoupper($m[1]);
+ }
+ else if ($default_charset) {
+ $part->charset = $default_charset;
+ }
+ else {
+ $rcube = rcube::get_instance();
+ $part->charset = $rcube->config->get('default_charset', RCUBE_CHARSET);
+ }
+ }
+
+ // ..convert charset encoding
+ $body = rcube_charset::convert($body, $part->charset);
+
+ return $body;
+ }
+
+
+ /**
* Determine if the message contains a HTML part. This must to be
* a real part not an attachment (or its part)
*
@@ -293,7 +415,7 @@ class rcube_message
// check all message parts
foreach ($this->mime_parts as $pid => $part) {
if ($part->mimetype == 'text/html') {
- return $this->get_part_content($pid);
+ return $this->get_part_body($pid, true);
}
}
}
@@ -314,10 +436,10 @@ class rcube_message
// check all message parts
foreach ($this->mime_parts as $mime_id => $part) {
if ($part->mimetype == 'text/plain') {
- return $this->get_part_content($mime_id);
+ return $this->get_part_body($mime_id, true);
}
else if ($part->mimetype == 'text/html') {
- $out = $this->get_part_content($mime_id);
+ $out = $this->get_part_body($mime_id, true);
// create instance of html2text class
$txt = new rcube_html2text($out);
@@ -371,7 +493,7 @@ class rcube_message
// parse headers from message/rfc822 part
if (!isset($structure->headers['subject']) && !isset($structure->headers['from'])) {
- list($headers, ) = explode("\r\n\r\n", $this->get_part_content($structure->mime_id, null, true, 32768));
+ list($headers, ) = explode("\r\n\r\n", $this->get_part_body($structure->mime_id, false, 32768));
$structure->headers = rcube_mime::parse_headers($headers);
}
}
@@ -725,15 +847,13 @@ class rcube_message
*/
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);
- }
+ // @TODO: attachment may be huge, handle body via file
+ $body = $this->get_part_body($part->mime_id);
+ $tnef = new tnef_decoder;
+ $tnef_arr = $tnef->decompress($body);
+ $parts = array();
- $parts = array();
- $tnef = new tnef_decoder;
- $tnef_arr = $tnef->decompress($part->body);
+ unset($body);
foreach ($tnef_arr as $pid => $winatt) {
$tpart = new rcube_message_part;
@@ -763,50 +883,54 @@ class rcube_message
*/
function uu_decode(&$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);
- }
+ // @TODO: messages may be huge, handle body via file
+ $part->body = $this->get_part_body($part->mime_id);
+ $parts = array();
+ $pid = 0;
- $parts = array();
// FIXME: line length is max.65?
- $uu_regexp = '/begin [0-7]{3,4} ([^\n]+)\n/s';
+ $uu_regexp_begin = '/begin [0-7]{3,4} ([^\r\n]+)\r?\n/s';
+ $uu_regexp_end = '/`\r?\nend((\r?\n)|($))/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);
+ while (preg_match($uu_regexp_begin, $part->body, $matches, PREG_OFFSET_CAPTURE)) {
+ $startpos = $matches[0][1];
- // remove attachments bodies from the message body
- $part->body = substr_replace($part->body, "", $startpos, $endpos+strlen($uu_endstring)-$startpos);
+ if (!preg_match($uu_regexp_end, $part->body, $m, PREG_OFFSET_CAPTURE, $startpos)) {
+ break;
+ }
- $uupart = new rcube_message_part;
+ // update message content-type
+ if ($part->mimetype != 'multipart/mixed') {
+ $part->ctype_primary = 'multipart';
+ $part->ctype_secondary = 'mixed';
+ $part->mimetype = $part->ctype_primary . '/' . $part->ctype_secondary;
+ }
- $uupart->filename = trim($att[1]);
- $uupart->encoding = 'stream';
- $uupart->body = convert_uudecode($filebody);
- $uupart->size = strlen($uupart->body);
- $uupart->mime_id = 'uu.' . $part->mime_id . '.' . $pid;
+ $endpos = $m[0][1];
+ $begin_len = strlen($matches[0][0]);
+ $end_len = strlen($m[0][0]);
- $ctype = rcube_mime::file_content_type($uupart->body, $uupart->filename, 'application/octet-stream', true);
- $uupart->mimetype = $ctype;
- list($uupart->ctype_primary, $uupart->ctype_secondary) = explode('/', $ctype);
+ // extract attachment body
+ $filebody = substr($part->body, $startpos + $begin_len, $endpos - $startpos - $begin_len - 1);
+ $filebody = str_replace("\r\n", "\n", $filebody);
- $parts[] = $uupart;
- unset($matches[$pid]);
- }
+ // remove attachment body from the message body
+ $part->body = substr_replace($part->body, '', $startpos, $endpos + $end_len - $startpos);
- // remove attachments bodies from the message body
- $part->body = preg_replace($uu_regexp, '', $part->body);
+ // add attachments to the structure
+ $uupart = new rcube_message_part;
+ $uupart->filename = trim($matches[1][0]);
+ $uupart->encoding = 'stream';
+ $uupart->body = convert_uudecode($filebody);
+ $uupart->size = strlen($uupart->body);
+ $uupart->mime_id = 'uu.' . $part->mime_id . '.' . $pid;
+
+ $ctype = rcube_mime::file_content_type($uupart->body, $uupart->filename, 'application/octet-stream', true);
+ $uupart->mimetype = $ctype;
+ list($uupart->ctype_primary, $uupart->ctype_secondary) = explode('/', $ctype);
+
+ $parts[] = $uupart;
+ $pid++;
}
return $parts;
diff --git a/program/steps/mail/compose.inc b/program/steps/mail/compose.inc
index 1770a1bcb..2b1ca4de6 100644
--- a/program/steps/mail/compose.inc
+++ b/program/steps/mail/compose.inc
@@ -802,22 +802,14 @@ function rcmail_compose_part_body($part, $isHtml = false)
return '';
}
- if (empty($part->ctype_parameters) || empty($part->ctype_parameters['charset'])) {
- $part->ctype_parameters['charset'] = $MESSAGE->headers->charset;
- }
-
// fetch part if not available
- if (!isset($part->body)) {
- $part->body = $MESSAGE->get_part_content($part->mime_id);
- }
+ $body = $MESSAGE->get_part_body($part->mime_id, true);
// message is cached but not exists (#1485443), or other error
- if ($part->body === false) {
+ if ($body === false) {
return '';
}
- $body = $part->body;
-
if ($isHtml) {
if ($part->ctype_secondary == 'html') {
}
@@ -1363,7 +1355,7 @@ function rcmail_save_attachment(&$message, $pid)
$path = tempnam($temp_dir, 'rcmAttmnt');
if ($fp = fopen($path, 'w')) {
- $message->get_part_content($pid, $fp, true, 0, false);
+ $message->get_part_body($pid, false, 0, $fp);
fclose($fp);
}
else {
@@ -1371,7 +1363,7 @@ function rcmail_save_attachment(&$message, $pid)
}
}
else {
- $data = $message->get_part_content($pid, null, true, 0, false);
+ $data = $message->get_part_body($pid);
}
$mimetype = $part->ctype_primary . '/' . $part->ctype_secondary;
diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index cbeeb05fb..8dced9b18 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -864,17 +864,19 @@ function rcmail_wash_html($html, $p, $cid_replaces)
* Convert the given message part to proper HTML
* which can be displayed the message view
*
- * @param object rcube_message_part Message part
- * @param array Display parameters array
+ * @param string Message part body
+ * @param rcube_message_part Message part
+ * @param array Display parameters array
+ *
* @return string Formatted HTML string
*/
-function rcmail_print_body($part, $p = array())
+function rcmail_print_body($body, $part, $p = array())
{
global $RCMAIL;
// trigger plugin hook
$data = $RCMAIL->plugins->exec_hook('message_part_before',
- array('type' => $part->ctype_secondary, 'body' => $part->body, 'id' => $part->mime_id)
+ array('type' => $part->ctype_secondary, 'body' => $body, 'id' => $part->mime_id)
+ $p + array('safe' => false, 'plain' => false, 'inline_html' => true));
// convert html to text/plain
@@ -900,7 +902,7 @@ function rcmail_print_body($part, $p = array())
}
else {
// assert plaintext
- $body = $part->body;
+ $body = $data['body'];
$part->ctype_secondary = $data['type'] = 'plain';
}
@@ -1072,8 +1074,10 @@ function rcmail_message_headers($attrib, $headers=null)
}
else if ($hkey == 'subject' && empty($value))
$header_value = $RCMAIL->gettext('nosubject');
- else
+ else {
+ $value = is_array($value) ? implode(' ', $value) : $value;
$header_value = trim(rcube_mime::decode_header($value, $headers['charset']));
+ }
$output_headers[$hkey] = array(
'title' => $header_title,
@@ -1204,18 +1208,12 @@ function rcmail_message_body($attrib)
continue;
}
- if (empty($part->ctype_parameters) || empty($part->ctype_parameters['charset'])) {
- $part->ctype_parameters['charset'] = $MESSAGE->headers->charset;
- }
-
- // fetch part if not available
- if (!isset($part->body)) {
- $part->body = $MESSAGE->get_part_content($part->mime_id);
- }
+ // fetch part body
+ $body = $MESSAGE->get_part_body($part->mime_id, true);
// extract headers from message/rfc822 parts
if ($part->mimetype == 'message/rfc822') {
- $msgpart = rcube_mime::parse_message($part->body);
+ $msgpart = rcube_mime::parse_message($body);
if (!empty($msgpart->headers)) {
$part = $msgpart;
$out .= html::div('message-partheaders', rcmail_message_headers(sizeof($header_attrib) ? $header_attrib : null, $part->headers));
@@ -1223,14 +1221,14 @@ function rcmail_message_body($attrib)
}
// message is cached but not exists (#1485443), or other error
- if ($part->body === false) {
+ if ($body === false) {
rcmail_message_error($MESSAGE->uid);
}
$plugin = $RCMAIL->plugins->exec_hook('message_body_prefix',
array('part' => $part, 'prefix' => ''));
- $body = rcmail_print_body($part, array('safe' => $safe_mode, 'plain' => !$RCMAIL->config->get('prefer_html')));
+ $body = rcmail_print_body($body, $part, array('safe' => $safe_mode, 'plain' => !$RCMAIL->config->get('prefer_html')));
if ($part->ctype_secondary == 'html') {
$body = rcmail_html4inline($body, $attrib['id'], 'rcmBody', $attrs, $safe_mode);
diff --git a/program/steps/mail/get.inc b/program/steps/mail/get.inc
index b260d2c85..948465604 100644
--- a/program/steps/mail/get.inc
+++ b/program/steps/mail/get.inc
@@ -130,7 +130,7 @@ else if (strlen($part_id)) {
$extensions = rcube_mime::get_mime_extensions($mimetype);
if ($plugin['body']) {
- $part->body = $plugin['body'];
+ $body = $plugin['body'];
}
// compare file mimetype with the stated content-type headers and file extension to avoid malicious operations
@@ -142,15 +142,10 @@ else if (strlen($part_id)) {
// 2. detect the real mimetype of the attachment part and compare it with the stated mimetype and filename extension
if ($valid || !$file_extension || $mimetype == 'application/octet-stream' || stripos($mimetype, 'text/') === 0) {
- if ($part->body) // part body is already loaded
- $body = $part->body;
- else if ($part->size && $part->size < 1024*1024) // load the entire part if it's small enough
- $body = $part->body = $MESSAGE->get_part_content($part->mime_id);
- else // fetch the first 2K of the message part
- $body = $MESSAGE->get_part_content($part->mime_id, null, true, 2048);
+ $tmp_body = $body ?: $MESSAGE->get_part_body($part->mime_id, false, 2048);
// detect message part mimetype
- $real_mimetype = rcube_mime::file_content_type($body, $part->filename, $mimetype, true, true);
+ $real_mimetype = rcube_mime::file_content_type($tmp_body, $part->filename, $mimetype, true, true);
list($real_ctype_primary, $real_ctype_secondary) = explode('/', $real_mimetype);
// accept text/plain with any extension
@@ -251,15 +246,15 @@ else if (strlen($part_id)) {
}
else {
// get part body if not available
- if (!$part->body) {
- $part->body = $MESSAGE->get_part_content($part->mime_id);
+ if (!isset($body)) {
+ $body = $MESSAGE->get_part_body($part->mime_id, true);
}
// show images?
rcmail_check_safe($MESSAGE);
// render HTML body
- $out = rcmail_print_body($part, array('safe' => $MESSAGE->is_safe, 'inline_html' => false));
+ $out = rcmail_print_body($body, $part, array('safe' => $MESSAGE->is_safe, 'inline_html' => false));
// insert remote objects warning into HTML body
if ($REMOTE_OBJECTS) {
@@ -280,7 +275,7 @@ else if (strlen($part_id)) {
}
// check connection status
- if ($part->size && empty($part->body)) {
+ if ($part->size && empty($body)) {
check_storage_status();
}
@@ -320,12 +315,12 @@ else if (strlen($part_id)) {
$file_path = tempnam($temp_dir, 'rcmAttmnt');
// write content to temp file
- if ($part->body) {
- $saved = file_put_contents($file_path, $part->body);
+ if ($body) {
+ $saved = file_put_contents($file_path, $body);
}
else if ($part->size) {
$fd = fopen($file_path, 'w');
- $saved = $RCMAIL->storage->get_message_part($MESSAGE->uid, $part->mime_id, $part, false, $fd);
+ $saved = $MESSAGE->get_part_body($part->mime_id, false, 0, $fd);
fclose($fd);
}
@@ -341,22 +336,22 @@ else if (strlen($part_id)) {
}
// do content filtering to avoid XSS through fake images
else if (!empty($_REQUEST['_embed']) && $browser->ie && $browser->ver <= 8) {
- if ($part->body) {
- echo preg_match('/<(script|iframe|object)/i', $part->body) ? '' : $part->body;
+ if ($body) {
+ echo preg_match('/<(script|iframe|object)/i', $body) ? '' : $body;
$sent = true;
}
else if ($part->size) {
$stdout = fopen('php://output', 'w');
stream_filter_register('rcube_content', 'rcube_content_filter') or die('Failed to register content filter');
stream_filter_append($stdout, 'rcube_content');
- $sent = $RCMAIL->storage->get_message_part($MESSAGE->uid, $part->mime_id, $part, false, $stdout);
+ $sent = $MESSAGE->get_part_body($part->mime_id, true, 0, $stdout);
}
}
// send part as-it-is
else {
- if ($part->body && empty($plugin['download'])) {
- header("Content-Length: " . strlen($part->body));
- echo $part->body;
+ if ($body && empty($plugin['download'])) {
+ header("Content-Length: " . strlen($body));
+ echo $body;
$sent = true;
}
else if ($part->size) {
@@ -364,8 +359,7 @@ else if (strlen($part_id)) {
header("Content-Length: $size");
}
- // 8th argument disables re-formatting of text/* parts (#1489267)
- $sent = $RCMAIL->storage->get_message_part($MESSAGE->uid, $part->mime_id, $part, true, null, false, 0, false);
+ $sent = $MESSAGE->get_part_body($part->mime_id, false, 0, -1);
}
}