/**
* mime.php
*
- * Copyright (c) 1999-2003 The SquirrelMail Project Team
- * Licensed under the GNU GPL. For full terms see the file COPYING.
- *
* This contains the functions necessary to detect and decode MIME
* messages.
*
- * $Id$
+ * @copyright © 1999-2005 The SquirrelMail Project Team
+ * @license http://opensource.org/licenses/gpl-license.php GNU Public License
+ * @version $Id$
+ * @package squirrelmail
*/
+/** The typical includes... */
require_once(SM_PATH . 'functions/imap.php');
require_once(SM_PATH . 'functions/attachment_common.php');
+/** add sqm_baseuri()*/
+include_once(SM_PATH . 'functions/display_messages.php');
-/* --------------------------------------------------------------------------------- */
-/* MIME DECODING */
-/* --------------------------------------------------------------------------------- */
+/* -------------------------------------------------------------------------- */
+/* MIME DECODING */
+/* -------------------------------------------------------------------------- */
-/* This function gets the structure of a message and stores it in the "message" class.
+/**
+ * Get the MIME structure
+ *
+ * This function gets the structure of a message and stores it in the "message" class.
* It will return this object for use with all relevant header information and
* fully parsed into the standard "message" object format.
*/
-
function mime_structure ($bodystructure, $flags=array()) {
/* Isolate the body structure and remove beginning and end parenthesis. */
if (!is_object($msg)) {
include_once(SM_PATH . 'functions/display_messages.php');
global $color, $mailbox;
- displayPageHeader( $color, urldecode($mailbox) );
- echo "<BODY TEXT=\"$color[8]\" BGCOLOR=\"$color[4]\" LINK=\"$color[7]\" VLINK=\"$color[7]\" ALINK=\"$color[7]\">\n\n" .
- '<CENTER>';
+ /* removed urldecode because $_GET is auto urldecoded ??? */
+ displayPageHeader( $color, $mailbox );
$errormessage = _("SquirrelMail could not decode the bodystructure of the message");
- $errormessage .= '<BR>'._("the provided bodystructure by your imap-server").':<BR><BR>';
- $errormessage .= '<table><tr><td>' . htmlspecialchars($read) . '</td></tr></table>';
+ $errormessage .= '<br />'._("The bodystructure provided by your IMAP server:").'<br /><br />';
+ $errormessage .= '<pre>' . htmlspecialchars($read) . '</pre>';
plain_error_message( $errormessage, $color );
echo '</body></html>';
exit;
* to mime_get_elements()
*/
-function mime_fetch_body($imap_stream, $id, $ent_id=1) {
- global $uid_support;
+function mime_fetch_body($imap_stream, $id, $ent_id=1, $fetch_size=0) {
/* Do a bit of error correction. If we couldn't find the entity id, just guess
* that it is the first one. That is usually the case anyway.
*/
+
if (!$ent_id) {
- $cmd = "FETCH $id BODY[]";
+ $cmd = "FETCH $id BODY[]";
} else {
- $cmd = "FETCH $id BODY[$ent_id]";
+ $cmd = "FETCH $id BODY[$ent_id]";
}
- $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message, $uid_support);
+ if ($fetch_size!=0) $cmd .= "<0.$fetch_size>";
+
+ $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message, TRUE);
do {
$topline = trim(array_shift($data));
} while($topline && ($topline[0] == '*') && !preg_match('/\* [0-9]+ FETCH.*/i', $topline)) ;
/* There is some information in the content info header that could be important
* in order to parse html messages. Let's get them here.
*/
- if ($ret{0} == '<') {
- $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, $uid_support);
- }
+// if ($ret{0} == '<') {
+// $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, TRUE);
+// }
} else if (ereg('"([^"]*)"', $topline, $regs)) {
$ret = $regs[1];
} else {
$par .= '&startMessage=' . $startMessage . '&show_more=0';
}
$par .= '&response=' . urlencode($response) .
- '&message=' . urlencode($message) .
- '&topline=' . urlencode($topline);
-
- echo '<tt><br>' .
-
'<table width="80%"><tr>' .
- '<tr><td colspan=2>' .
- _("Body retrieval error. The reason for this is most probably that the message is malformed.") .
- '</td></tr>' .
- '<tr><td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" .
- '<tr><td><b>' . _("Response:") . "</td><td>$response</td></tr>" .
- '<tr><td><b>' . _("Message:") . "</td><td>$message</td></tr>" .
- '<tr><td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" .
- "</table><BR></tt></font><hr>";
-
- $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message, $uid_support);
+ '&message=' . urlencode($message) .
+ '&topline=' . urlencode($topline);
+
+ echo '<tt><br />' .
+ '<table width="80%"><tr>' .
+ '<tr><td colspan="2">' .
+ _("Body retrieval error. The reason for this is most probably that the message is malformed.") .
+ '</td></tr>' .
+ '<tr><td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" .
+ '<tr><td><b>' . _("Response:") . "</td><td>$response</td></tr>" .
+ '<tr><td><b>' . _("Message:") . "</td><td>$message</td></tr>" .
+ '<tr><td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" .
+ "</table><br /></tt></font><hr />";
+
+ $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message, TRUE);
array_shift($data);
$wholemessage = implode('', $data);
return $ret;
}
-function mime_print_body_lines ($imap_stream, $id, $ent_id=1, $encoding) {
- global $uid_support;
+function mime_print_body_lines ($imap_stream, $id, $ent_id=1, $encoding, $rStream='php://stdout') {
- $sid = sqimap_session_id($uid_support);
/* Don't kill the connection if the browser is over a dialup
* and it would take over 30 seconds to download it.
- * Donยดt call set_time_limit in safe mode.
+ * Don't call set_time_limit in safe mode.
*/
if (!ini_get('safe_mode')) {
set_time_limit(0);
}
- if ($uid_support) {
- $sid_s = substr($sid,0,strpos($sid, ' '));
+ /* in case of base64 encoded attachments, do not buffer them.
+ Instead, echo the decoded attachment directly to screen */
+ if (strtolower($encoding) == 'base64') {
+ if (!$ent_id) {
+ $query = "FETCH $id BODY[]";
+ } else {
+ $query = "FETCH $id BODY[$ent_id]";
+ }
+ sqimap_run_command($imap_stream,$query,true,$response,$message,TRUE,'sqimap_base64_decode',$rStream,true);
} else {
- $sid_s = $sid;
+ $body = mime_fetch_body ($imap_stream, $id, $ent_id);
+ if (is_resource($rStream)) {
+ fputs($rStream,decodeBody($body,$encoding));
+ } else {
+ echo decodeBody($body, $encoding);
+ }
}
- $body = mime_fetch_body ($imap_stream, $id, $ent_id);
- echo decodeBody($body, $encoding);
+ /*
+ TODO, use the same method for quoted printable.
+ However, I assume that quoted printable attachments aren't that large
+ so the performancegain / memory usage drop will be minimal.
+ If we decide to add that then we need to adapt sqimap_fread because
+ we need to split te result on \n and fread doesn't stop at \n. That
+ means we also should provide $results from sqimap_fread (by ref) to
+ te function and set $no_return to false. The $filter function for
+ quoted printable should handle unsetting of $results.
+ */
+ /*
+ TODO 2: find out how we write to the output stream php://stdout. fwrite
+ doesn't work because 'php://stdout isn't a stream.
+ */
+
return;
-/*
- fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id]\r\n");
- $cnt = 0;
- $continue = true;
- $read = fgets ($imap_stream,8192);
-
-
- // This could be bad -- if the section has sqimap_session_id() . ' OK'
- // or similar, it will kill the download.
- while (!ereg("^".$sid_s." (OK|BAD|NO)(.*)$", $read, $regs)) {
- if (trim($read) == ')==') {
- $read1 = $read;
- $read = fgets ($imap_stream,4096);
- if (ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) {
- return;
- } else {
- echo decodeBody($read1, $encoding) .
- decodeBody($read, $encoding);
- }
- } else if ($cnt) {
- echo decodeBody($read, $encoding);
- }
- $read = fgets ($imap_stream,4096);
- $cnt++;
-// break;
- }
-*/
}
/* -[ END MIME DECODING ]----------------------------------------------------------- */
*/
function listEntities ($message) {
if ($message) {
- echo "<tt>" . $message->entity_id . ' : ' . $message->type0 . '/' . $message->type1 . ' parent = '. $message->parent->entity_id. '<br>';
+ echo "<tt>" . $message->entity_id . ' : ' . $message->type0 . '/' . $message->type1 . ' parent = '. $message->parent->entity_id. '<br />';
for ($i = 0; isset($message->entities[$i]); $i++) {
echo "$i : ";
$msg = listEntities($message->entities[$i]);
for ($i=0; $i < count($body_ary); $i++) {
$line = $body_ary[$i];
if (strlen($line) - 2 >= $wrap_at) {
- sqWordWrap($line, $wrap_at);
+ sqWordWrap($line, $wrap_at, $charset);
}
$line = charset_decode($charset, $line);
$line = str_replace("\t", ' ', $line);
$body = '<pre>' . implode("\n", $body_ary) . '</pre>';
}
-/* This returns a parsed string called $body. That string can then
+/**
+ * This returns a parsed string called $body. That string can then
* be displayed as the actual message in the HTML. It contains
* everything needed, including HTML Tags, Attachments at the
* bottom, etc.
+ *
+ * Since 1.2.0 function uses message_body hook.
+ * Till 1.3.0 function included output of formatAttachments().
+ *
+ * @param resource $imap_stream imap connection resource
+ * @param object $message squirrelmail message object
+ * @param array $color squirrelmail color theme array
+ * @param integer $wrap_at number of characters per line
+ * @param string $ent_num (since 1.3.0) message part id
+ * @param integer $id (since 1.3.0) message id
+ * @param string $mailbox (since 1.3.0) imap folder name
+ * @param boolean $clean (since 1.5.1) Do not output stuff that's irrelevant for the printable version.
+ * @return string html formated message text
*/
-function formatBody($imap_stream, $message, $color, $wrap_at, $ent_num, $id, $mailbox='INBOX') {
+function formatBody($imap_stream, $message, $color, $wrap_at, $ent_num, $id, $mailbox='INBOX', $clean=FALSE) {
/* This if statement checks for the entity to show as the
* primary message. To add more of them, just put them in the
* order that is their priority.
*/
- global $startMessage, $username, $key, $imapServerAddress, $imapPort,
- $show_html_default, $sort, $has_unsafe_images, $passed_ent_id;
+ global $startMessage, $languages, $squirrelmail_language,
+ $show_html_default, $sort, $has_unsafe_images, $passed_ent_id, $use_iframe,$iframe_height;
+
+ // workaround for not updated config.php
+ if (! isset($use_iframe)) $use_iframe = false;
if( !sqgetGlobalVar('view_unsafe_images', $view_unsafe_images, SQ_GET) ) {
$view_unsafe_images = false;
$urlmailbox = urlencode($mailbox);
$body_message = getEntity($message, $ent_num);
if (($body_message->header->type0 == 'text') ||
- ($body_message->header->type0 == 'rfc822')) {
+ ($body_message->header->type0 == 'rfc822')) {
$body = mime_fetch_body ($imap_stream, $id, $ent_num);
$body = decodeBody($body, $body_message->header->encoding);
+
+ if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) {
+ if (mb_detect_encoding($body) != 'ASCII') {
+ $body = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode',$body);
+ }
+ }
$hookResults = do_hook("message_body", $body);
$body = $hookResults[1];
if ($show_html_default <> 1) {
$entity_conv = array(' ' => ' ',
'<p>' => "\n",
- '<br>' => "\n",
'<P>' => "\n",
+ '<br>' => "\n",
'<BR>' => "\n",
+ '<br />' => "\n",
+ '<BR />' => "\n",
'>' => '>',
'<' => '<');
$body = strtr($body, $entity_conv);
$body = strip_tags($body);
$body = trim($body);
translateText($body, $wrap_at,
- $body_message->header->getParameter('charset'));
+ $body_message->header->getParameter('charset'));
+ } elseif ($use_iframe && ! $clean) {
+ // $clean is used to remove iframe in printable view.
+
+ /**
+ * If we don't add html message between iframe tags,
+ * we must detect unsafe images and modify $has_unsafe_images.
+ */
+ $html_body = magicHTML($body, $id, $message, $mailbox);
+ // Convert character set in order to display html mails in different character set
+ $html_body = charset_decode($body_message->header->getParameter('charset'),$html_body,false,true);
+
+ // creating iframe url
+ $iframeurl=sqm_baseuri().'src/view_html.php?'
+ . 'mailbox=' . $urlmailbox
+ . '&passed_id=' . $id
+ . '&ent_id=' . $ent_num
+ . '&view_unsafe_images=' . (int) $view_unsafe_images;
+
+ // adding warning message
+ $body = html_tag('div',_("Viewing HTML formatted email"),'center');
+
+ /**
+ * height can't be set to 100%, because it does not work as expected when
+ * iframe is inside the table. Browsers do not create full height objects
+ * even when iframe is not nested. Maybe there is some way to get full size
+ * with CSS. Tested in firefox 1.02 and opera 7.53
+ *
+ * width="100%" does not work as expected, when table width is not set (automatic)
+ *
+ * tokul: I think <iframe> are safer sandbox than <object>. Objects might
+ * need special handling for IE and IE6SP2.
+ */
+ $body.= "<div><iframe name=\"message_frame\" width=\"100%\" height=\"$iframe_height\" src=\"$iframeurl\""
+ .' frameborder="1" marginwidth="0" marginheight="0" scrolling="auto">' . "\n";
+
+ // Message for browsers without iframe support
+ //$body.= _("Your browser does not support inline frames.
+ // You can view HTML formated message by following below link.");
+ //$body.= "<br /><a href=\"$iframeurl\">"._("View HTML Message")."</a>";
+
+ // if browser can't render iframe, it renders html message.
+ $body.= $html_body;
+
+ // close iframe
+ $body.="</iframe></div>\n";
} else {
+ // old way of html rendering
$body = magicHTML($body, $id, $message, $mailbox);
+ /**
+ * convert character set. charset_decode does not remove html special chars
+ * applied by magicHTML functions and does not sanitize them second time if
+ * fourth argument is true.
+ */
+ $body = charset_decode($body_message->header->getParameter('charset'),$body,false,true);
}
} else {
translateText($body, $wrap_at,
- $body_message->header->getParameter('charset'));
+ $body_message->header->getParameter('charset'));
+ }
+
+ // if this is the clean display (i.e. printer friendly), stop here.
+ if ( $clean ) {
+ return $body;
+ }
+
+ $link = 'passed_id=' . $id . '&ent_id='.$ent_num.
+ '&mailbox=' . $urlmailbox .'&sort=' . $sort .
+ '&startMessage=' . $startMessage . '&show_more=0';
+ if (isset($passed_ent_id)) {
+ $link .= '&passed_ent_id='.$passed_ent_id;
}
- $link = 'read_body.php?passed_id=' . $id . '&ent_id='.$ent_num.
- '&mailbox=' . $urlmailbox .'&sort=' . $sort .
- '&startMessage=' . $startMessage . '&show_more=0';
- if (isset($passed_ent_id)) {
- $link .= '&passed_ent_id='.$passed_ent_id;
- }
+ $body .= '<center><small><a href="download.php?absolute_dl=true&' .
+ $link . '">' . _("Download this as a file") . '</a>';
if ($view_unsafe_images) {
$text = _("Hide Unsafe Images");
} else {
- if (isset($has_unsafe_images) && $has_unsafe_images) {
- $link .= '&view_unsafe_images=1';
- $text = _("View Unsafe Images");
- } else {
- $text = '';
- }
+ if (isset($has_unsafe_images) && $has_unsafe_images) {
+ $link .= '&view_unsafe_images=1';
+ $text = _("View Unsafe Images");
+ } else {
+ $text = '';
+ }
+ }
+ if($text != '') {
+ $body .= ' | <a href="read_body.php?' . $link . '">' . $text . '</a>';
}
- $body .= '<center><small><a href="'.$link.'">'.$text.
- '</a></small></center><br>' . "\n";
+ $body .= '</small></center><br />' . "\n";
}
return $body;
}
-
+/**
+ * Displays attachment links and information
+ *
+ * Since 1.3.0 function is not included in formatBody() call.
+ *
+ * Since 1.0.2 uses attachment $type0/$type1 hook.
+ * Since 1.2.5 uses attachment $type0/* hook.
+ * Since 1.5.0 uses attachments_bottom hook.
+ *
+ * @param object $message SquirrelMail message object
+ * @param array $exclude_id message parts that are not attachments.
+ * @param string $mailbox mailbox name
+ * @param integer $id message id
+ * @return string html formated attachment information.
+ */
function formatAttachments($message, $exclude_id, $mailbox, $id) {
- global $where, $what, $startMessage, $color;
- static $ShownHTML = 0;
+ global $where, $what, $startMessage, $color, $passed_ent_id;
$att_ar = $message->getAttachments($exclude_id);
$urlMailbox = urlencode($mailbox);
foreach ($att_ar as $att) {
- $ent = urldecode($att->entity_id);
+ $ent = $att->entity_id;
$header = $att->header;
$type0 = strtolower($header->type0);
$type1 = strtolower($header->type1);
$name = '';
- $links['download link']['text'] = _("download");
- $links['download link']['href'] =
- "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&ent_id=$ent";
- $ImageURL = '';
+ $links['download link']['text'] = _("Download");
+ $links['download link']['href'] = sqm_baseuri() .
+ "src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&ent_id=$ent";
if ($type0 =='message' && $type1 == 'rfc822') {
- $default_page = '../src/read_body.php';
+ $default_page = sqm_baseuri() . 'src/read_body.php';
$rfc822_header = $att->rfc822_header;
$filename = $rfc822_header->subject;
if (trim( $filename ) == '') {
$filename = 'untitled-[' . $ent . ']' ;
- }
+ }
$from_o = $rfc822_header->from;
if (is_object($from_o)) {
- $from_name = $from_o->getAddress(false);
+ $from_name = decodeHeader($from_o->getAddress(false));
} else {
$from_name = _("Unknown sender");
}
- $from_name = decodeHeader(($from_name));
$description = $from_name;
} else {
- $default_page = '../src/download.php';
- if (is_object($header->disposition)) {
- $filename = $header->disposition->getProperty('filename');
- if (trim($filename) == '') {
- $name = decodeHeader($header->disposition->getProperty('name'));
- if (trim($name) == '') {
- $name = $header->getParameter('name');
- if(trim($name) == '') {
- if (trim( $header->id ) == '') {
- $filename = 'untitled-[' . $ent . ']' ;
- } else {
- $filename = 'cid: ' . $header->id;
- }
- } else {
- $filename = $name;
- }
- } else {
- $filename = $name;
- }
- }
- } else {
- $filename = $header->getParameter('name');
- if (!trim($filename)) {
- if (trim( $header->id ) == '') {
- $filename = 'untitled-[' . $ent . ']' ;
- } else {
- $filename = 'cid: ' . $header->id;
- }
- }
- }
+ $default_page = sqm_baseuri() . 'src/download.php';
+ $filename = $att->getFilename();
if ($header->description) {
$description = decodeHeader($header->description);
} else {
$passed_ent_id_link = '';
}
$defaultlink = $default_page . "?startMessage=$startMessage"
- . "&passed_id=$id&mailbox=$urlMailbox"
- . '&ent_id='.$ent.$passed_ent_id_link.'&absolute_dl=true';
+ . "&passed_id=$id&mailbox=$urlMailbox"
+ . '&ent_id='.$ent.$passed_ent_id_link;
if ($where && $what) {
- $defaultlink .= '&where='. urlencode($where).'&what='.urlencode($what);
+ $defaultlink .= '&where='. urlencode($where).'&what='.urlencode($what);
}
+
/* This executes the attachment hook with a specific MIME-type.
* If that doesn't have results, it tries if there's a rule
* for a more generic type.
*/
$hookresults = do_hook("attachment $type0/$type1", $links,
- $startMessage, $id, $urlMailbox, $ent, $defaultlink,
- $display_filename, $where, $what);
+ $startMessage, $id, $urlMailbox, $ent, $defaultlink,
+ $display_filename, $where, $what);
if(count($hookresults[1]) <= 1) {
$hookresults = do_hook("attachment $type0/*", $links,
- $startMessage, $id, $urlMailbox, $ent, $defaultlink,
- $display_filename, $where, $what);
+ $startMessage, $id, $urlMailbox, $ent, $defaultlink,
+ $display_filename, $where, $what);
}
$links = $hookresults[1];
$defaultlink = $hookresults[6];
- $attachments .= '<TR><TD>' .
- '<A HREF="'.$defaultlink.'">'.decodeHeader($display_filename).'</A> </TD>' .
- '<TD><SMALL><b>' . show_readable_size($header->size) .
- '</b> </small></TD>' .
- "<TD><SMALL>[ $type0/$type1 ] </SMALL></TD>" .
- '<TD><SMALL>';
+ $attachments .= '<tr><td>' .
+ '<a href="'.$defaultlink.'">'.decodeHeader($display_filename).'</a> </td>' .
+ '<td><small><b>' . show_readable_size($header->size) .
+ '</b> </small></td>' .
+ '<td><small>[ '.htmlspecialchars($type0).'/'.htmlspecialchars($type1).' ] </small></td>' .
+ '<td><small>';
$attachments .= '<b>' . $description . '</b>';
- $attachments .= '</SMALL></TD><TD><SMALL> ';
+ $attachments .= '</small></td><td><small> ';
$skipspaces = 1;
foreach ($links as $val) {
} else {
$attachments .= ' | ';
}
- $attachments .= '<a href="' . $val['href'] . '">' . $val['text'] . '</a>';
+ $attachments .= '<a href="' . $val['href'] . '">'
+ . (isset($val['text']) && !empty($val['text']) ? $val['text'] : '')
+ . (isset($val['extra']) && !empty($val['extra']) ? $val['extra'] : '')
+ . '</a>';
}
unset($links);
- $attachments .= "</TD></TR>\n";
+ $attachments .= "</td></tr>\n";
}
+ $attachmentadd = do_hook_function('attachments_bottom',$attachments);
+ if ($attachmentadd != '')
+ $attachments = $attachmentadd;
return $attachments;
}
+function sqimap_base64_decode(&$string) {
+
+ // Base64 encoded data goes in pairs of 4 bytes. To achieve on the
+ // fly decoding (to reduce memory usage) you have to check if the
+ // data has incomplete pairs
+
+ // Remove the noise in order to check if the 4 bytes pairs are complete
+ $string = str_replace(array("\r\n","\n", "\r", " "),array('','','',''),$string);
+
+ $sStringRem = '';
+ $iMod = strlen($string) % 4;
+ if ($iMod) {
+ $sStringRem = substr($string,-$iMod);
+ // Check if $sStringRem contains padding characters
+ if (substr($sStringRem,-1) != '=') {
+ $string = substr($string,0,-$iMod);
+ } else {
+ $sStringRem = '';
+ }
+ }
+ $string = base64_decode($string);
+ return $sStringRem;
+}
+
+
/* This function decodes the body depending on the encoding type. */
function decodeBody($body, $encoding) {
- global $languages, $squirrelmail_language;
global $show_html_default;
$body = str_replace("\r\n", "\n", $body);
$encoding = strtolower($encoding);
- if ($encoding == 'quoted-printable' ||
- $encoding == 'quoted_printable') {
+ $encoding_handler = do_hook_function('decode_body', $encoding);
+
+
+ // plugins get first shot at decoding the body
+ //
+ if (!empty($encoding_handler) && function_exists($encoding_handler)) {
+ $body = $encoding_handler('decode', $body);
+
+ } else if ($encoding == 'quoted-printable' ||
+ $encoding == 'quoted_printable') {
$body = quoted_printable_decode($body);
while (ereg("=\n", $body)) {
$body = base64_decode($body);
}
- if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
- function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
- $body = $languages[$squirrelmail_language]['XTRA_CODE']('decode', $body);
- }
-
// All other encodings are returned raw.
return $body;
}
-/*
+/**
+ * Decodes headers
+ *
* This functions decode strings that is encoded according to
* RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text).
* Patched by Christian Schmidt <christian@ostenfeld.dk> 23/03/2002
+ *
+ * @param string $string header string that has to be made readable
+ * @param boolean $utfencode change message in order to be readable on user's charset. defaults to true
+ * @param boolean $htmlsave preserve spaces and sanitize html special characters. defaults to true
+ * @param boolean $decide decide if string can be utfencoded. defaults to false
+ * @return string decoded header string
*/
-function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
- global $languages, $squirrelmail_language;
+function decodeHeader ($string, $utfencode=true,$htmlsave=true,$decide=false) {
+ global $languages, $squirrelmail_language,$default_charset;
if (is_array($string)) {
$string = implode("\n", $string);
}
if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
- function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
- $string = $languages[$squirrelmail_language]['XTRA_CODE']('decodeheader', $string);
- // Do we need to return at this point?
- // return $string;
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decodeheader')) {
+ $string = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decodeheader', $string);
+ // Do we need to return at this point?
+ // return $string;
}
$i = 0;
+ $iLastMatch = -2;
+ $encoded = true;
+
$aString = explode(' ',$string);
+ $ret = '';
foreach ($aString as $chunk) {
+ if ($encoded && $chunk === '') {
+ continue;
+ } elseif ($chunk === '') {
+ $ret .= ' ';
+ continue;
+ }
$encoded = false;
- $aString[$i] = '';
- while (preg_match('/^(.*)=\?([^?]*)\?(Q|B)\?([^?]*)\?=(.*)$/Ui',$chunk,$res)) {
- //$aString[$i] .= $res[1];
- //echo "match ". $res[5] . "<br>";
+ /* if encoded words are not separated by a linear-space-white we still catch them */
+ $j = $i-1;
+
+ while ($match = preg_match('/^(.*)=\?([^?]*)\?(Q|B)\?([^?]*)\?=(.*)$/Ui',$chunk,$res)) {
+ /* if the last chunk isn't an encoded string then put back the space, otherwise don't */
+ if ($iLastMatch !== $j) {
+ if ($htmlsave) {
+ $ret .= ' ';
+ } else {
+ $ret .= ' ';
+ }
+ }
+ $iLastMatch = $i;
+ $j = $i;
+ if ($htmlsave) {
+ $ret .= htmlspecialchars($res[1]);
+ } else {
+ $ret .= $res[1];
+ }
$encoding = ucfirst($res[3]);
+
+ /* decide about valid decoding */
+ if ($decide && is_conversion_safe($res[2])) {
+ $utfencode=true;
+ $can_be_encoded=true;
+ } else {
+ $can_be_encoded=false;
+ }
switch ($encoding)
{
- case 'B':
- $replace = base64_decode($res[4]);
- $aString[$i] .= charset_decode($res[2],$replace);
- break;
- case 'Q':
- $replace = str_replace('_', ' ', $res[4]);
- $replace = preg_replace('/=([0-9a-f]{2})/ie', 'chr(hexdec("\1"))',
- $replace);
- /* Only encode into entities by default. Some places
- * don't need the encoding, like the compose form.
- */
- if ($utfencode) {
- $replace = charset_decode($res[2], $replace);
- } else {
- if ($htmlsave) {
- $replace = htmlspecialchars($res[4]);
+ case 'B':
+ $replace = base64_decode($res[4]);
+ if ($utfencode) {
+ if ($can_be_encoded) {
+ /* convert string to different charset,
+ * if functions asks for it (usually in compose)
+ */
+ $ret .= charset_convert($res[2],$replace,$default_charset);
+ } else {
+ // convert string to html codes in order to display it
+ $ret .= charset_decode($res[2],$replace);
+ }
+ } else {
+ if ($htmlsave) {
+ $replace = htmlspecialchars($replace);
+ }
+ $ret.= $replace;
}
- }
- $aString[$i] .= $replace;
- break;
- default:
- break;
+ break;
+ case 'Q':
+ $replace = str_replace('_', ' ', $res[4]);
+ $replace = preg_replace('/=([0-9a-f]{2})/ie', 'chr(hexdec("\1"))',
+ $replace);
+ if ($utfencode) {
+ if ($can_be_encoded) {
+ /* convert string to different charset,
+ * if functions asks for it (usually in compose)
+ */
+ $replace = charset_convert($res[2], $replace,$default_charset);
+ } else {
+ // convert string to html codes in order to display it
+ $replace = charset_decode($res[2], $replace);
+ }
+ } else {
+ if ($htmlsave) {
+ $replace = htmlspecialchars($replace);
+ }
+ }
+ $ret .= $replace;
+ break;
+ default:
+ break;
}
$chunk = $res[5];
$encoded = true;
- }
+ }
+ if (!$encoded) {
+ if ($htmlsave) {
+ $ret .= ' ';
+ } else {
+ $ret .= ' ';
+ }
+ }
+
if (!$encoded && $htmlsave) {
- $aString[$i] = htmlspecialchars($chunk);
+ $ret .= htmlspecialchars($chunk);
} else {
- $aString[$i] .= $chunk;
+ $ret .= $chunk;
}
++$i;
}
- if ($htmlsave) {
- return implode(' ',$aString);
- } else {
- return implode (' ',$aString);
+ /* remove the first added space */
+ if ($ret) {
+ if ($htmlsave) {
+ $ret = substr($ret,5);
+ } else {
+ $ret = substr($ret,1);
+ }
}
+
+ return $ret;
}
-/*
- * Encode a string according to RFC 1522 for use in headers if it
- * contains 8-bit characters or anything that looks like it should
- * be encoded.
+/**
+ * Encodes header
+ *
+ * Function uses XTRA_CODE _encodeheader function, if such function exists.
+ *
+ * Function uses Q encoding by default and encodes a string according to RFC
+ * 1522 for use in headers if it contains 8-bit characters or anything that
+ * looks like it should be encoded.
+ *
+ * Function switches to B encoding and encodeHeaderBase64() function, if
+ * string is 8bit and multibyte character set supported by mbstring extension
+ * is used. It can cause E_USER_NOTICE errors, if interface is used with
+ * multibyte character set unsupported by mbstring extension.
+ *
+ * @param string $string header string, that has to be encoded
+ * @return string quoted-printable encoded string
+ * @todo make $mb_charsets system wide constant
*/
function encodeHeader ($string) {
global $default_charset, $languages, $squirrelmail_language;
if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
- function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
- return $languages[$squirrelmail_language]['XTRA_CODE']('encodeheader', $string);
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader')) {
+ return call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader', $string);
+ }
+
+ // Use B encoding for multibyte charsets
+ $mb_charsets = array('utf-8','big5','gb2313','euc-kr');
+ if (in_array($default_charset,$mb_charsets) &&
+ in_array($default_charset,sq_mb_list_encodings()) &&
+ sq_is8bit($string)) {
+ return encodeHeaderBase64($string,$default_charset);
+ } elseif (in_array($default_charset,$mb_charsets) &&
+ sq_is8bit($string) &&
+ ! in_array($default_charset,sq_mb_list_encodings())) {
+ // Add E_USER_NOTICE error here (can cause 'Cannot add header information' warning in compose.php)
+ // trigger_error('encodeHeader: Multibyte character set unsupported by mbstring extension.',E_USER_NOTICE);
}
// Encode only if the string contains 8-bit characters or =?
$j = strlen($string);
- $l = strstr($string, '=?'); // Must be encoded ?
$max_l = 75 - strlen($default_charset) - 7;
$aRet = array();
$ret = '';
- $enc = false;
+ $iEncStart = $enc_init = false;
$cur_l = $iOffset = 0;
for($i = 0; $i < $j; ++$i) {
- switch($string{$i}) {
+ switch($string{$i})
+ {
case '=':
- $cur_l+=3;
- if ($cur_l > $max_l) {
- if ($enc) {
- $aRet[] = "=?$default_charset?Q?$ret?=";
- $enc = false;
- } else {
- $aRet[] = substr($string,$iOffset,$i-$iOffset+1);
- }
- $iOffset = $i+1;
- $cur_l = 3;
- $ret = '';
- }
- $ret .= '=3D';
- break;
+ case '<':
+ case '>':
+ case ',':
case '?':
- $cur_l+=3;
- if ($cur_l > $max_l) {
- if ($enc) {
- $aRet[] = "=?$default_charset?Q?$ret?=";
- $enc = false;
- } else {
- $aRet[] = substr($string,$iOffset,$i-$iOffset+1);
- }
- $iOffset = $i+1;
- $cur_l = 3;
- $ret = '';
- }
- $ret .= '=3F';
- break;
case '_':
+ if ($iEncStart === false) {
+ $iEncStart = $i;
+ }
$cur_l+=3;
- if ($cur_l > $max_l) {
- if ($enc) {
- $aRet[] = "=?$default_charset?Q?$ret?=";
- $enc = false;
- } else {
- $aRet[] = substr($string,$iOffset,$i-$iOffset+1);
- }
- $iOffset = $i+1;
- $cur_l = 3;
+ if ($cur_l > ($max_l-2)) {
+ /* if there is an stringpart that doesn't need encoding, add it */
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = "=?$default_charset?Q?$ret?=";
+ $iOffset = $i;
+ $cur_l = 0;
$ret = '';
- }
- $ret .= '=5F';
+ $iEncStart = false;
+ } else {
+ $ret .= sprintf("=%02X",ord($string{$i}));
+ }
+ break;
+ case '(':
+ case ')':
+ if ($iEncStart !== false) {
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = "=?$default_charset?Q?$ret?=";
+ $iOffset = $i;
+ $cur_l = 0;
+ $ret = '';
+ $iEncStart = false;
+ }
break;
case ' ':
- $cur_l++;
- if ($cur_l > $max_l) {
- if ($enc) {
- $aRet[] = "=?$default_charset?Q?$ret?=";
- $enc = false;
- } else {
- $aRet[] = substr($string,$iOffset,$i-$iOffset+1);
- }
- $iOffset = $i+1;
- $cur_l = 1;
- $ret = '';
- }
- $ret .= '_';
+ if ($iEncStart !== false) {
+ $cur_l++;
+ if ($cur_l > $max_l) {
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = "=?$default_charset?Q?$ret?=";
+ $iOffset = $i;
+ $cur_l = 0;
+ $ret = '';
+ $iEncStart = false;
+ } else {
+ $ret .= '_';
+ }
+ }
break;
default:
$k = ord($string{$i});
if ($k > 126) {
- $enc = true;
- $s = sprintf("=%02X", $k);
- $cur_l += strlen($s);
- if ($cur_l > $max_l) {
- $aRet[] = "=?$default_charset?Q?$ret?=";
- $cur_l = strlen($s);
+ if ($iEncStart === false) {
+ // do not start encoding in the middle of a string, also take the rest of the word.
+ $sLeadString = substr($string,0,$i);
+ $aLeadString = explode(' ',$sLeadString);
+ $sToBeEncoded = array_pop($aLeadString);
+ $iEncStart = $i - strlen($sToBeEncoded);
+ $ret .= $sToBeEncoded;
+ $cur_l += strlen($sToBeEncoded);
+ }
+ $cur_l += 3;
+ /* first we add the encoded string that reached it's max size */
+ if ($cur_l > ($max_l-2)) {
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = "=?$default_charset?Q?$ret?= "; /* the next part is also encoded => separate by space */
+ $cur_l = 3;
$ret = '';
- $l = false;
- $enc = false;
- $iOffset = $i+1;
- }
- $ret .= $s;
- $l = TRUE;
+ $iOffset = $i;
+ $iEncStart = $i;
+ }
+ $enc_init = true;
+ $ret .= sprintf("=%02X", $k);
} else {
- $cur_l++;
- if ($cur_l > $max_l) {
- if ($enc) {
- $aRet[] = "=?$default_charset?Q?$ret?=";
- $enc = false;
- } else {
- $aRet[] = substr($ret,$iOffset,$i-$iOffset+1);
- }
- $iOffset = $i+1;
- $l = false;
- $cur_l = 1;
- $ret = '';
- }
- $ret .= $string{$i};
+ if ($iEncStart !== false) {
+ $cur_l++;
+ if ($cur_l > $max_l) {
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = "=?$default_charset?Q?$ret?=";
+ $iEncStart = false;
+ $iOffset = $i;
+ $cur_l = 0;
+ $ret = '';
+ } else {
+ $ret .= $string{$i};
+ }
+ }
}
break;
}
}
- if ($enc) {
- $string = implode('',$aRet) . "=?$default_charset?Q?$ret?=";
+ if ($enc_init) {
+ if ($iEncStart !== false) {
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = "=?$default_charset?Q?$ret?=";
+ } else {
+ $aRet[] = substr($string,$iOffset);
+ }
+ $string = implode('',$aRet);
}
-
return $string;
}
+/**
+ * Encodes string according to rfc2047 B encoding header formating rules
+ *
+ * It is recommended way to encode headers with character sets that store
+ * symbols in more than one byte.
+ *
+ * Function requires mbstring support. If required mbstring functions are missing,
+ * function returns false and sets E_USER_WARNING level error message.
+ *
+ * Minimal requirements - php 4.0.6 with mbstring extension. Please note,
+ * that mbstring functions will generate E_WARNING errors, if unsupported
+ * character set is used. mb_encode_mimeheader function provided by php
+ * mbstring extension is not used in order to get better control of header
+ * encoding.
+ *
+ * Used php code functions - function_exists(), trigger_error(), strlen()
+ * (is used with charset names and base64 strings). Used php mbstring
+ * functions - mb_strlen and mb_substr.
+ *
+ * Related documents: rfc 2045 (BASE64 encoding), rfc 2047 (mime header
+ * encoding), rfc 2822 (header folding)
+ *
+ * @param string $string header string that must be encoded
+ * @param string $charset character set. Must be supported by mbstring extension.
+ * Use sq_mb_list_encodings() to detect supported charsets.
+ * @return string string encoded according to rfc2047 B encoding formating rules
+ * @since 1.5.1
+ * @todo First header line can be wrapped to $iMaxLength - $HeaderFieldLength - 1
+ * @todo Do we want to control max length of header?
+ * @todo Do we want to control EOL (end-of-line) marker?
+ * @todo Do we want to translate error message?
+ */
+function encodeHeaderBase64($string,$charset) {
+ /**
+ * Check mbstring function requirements.
+ */
+ if (! function_exists('mb_strlen') ||
+ ! function_exists('mb_substr')) {
+ // set E_USER_WARNING
+ trigger_error('encodeHeaderBase64: Required mbstring functions are missing.',E_USER_WARNING);
+ // return false
+ return false;
+ }
+
+ // initial return array
+ $aRet = array();
+
+ /**
+ * header length = 75 symbols max (same as in encodeHeader)
+ * remove $charset length
+ * remove =? ? ?= (5 chars)
+ * remove 2 more chars (\r\n ?)
+ */
+ $iMaxLength = 75 - strlen($charset) - 7;
+
+ // set first character position
+ $iStartCharNum = 0;
+
+ // loop through all characters. count characters and not bytes.
+ for ($iCharNum=1; $iCharNum<=mb_strlen($string,$charset); $iCharNum++) {
+ // encode string from starting character to current character.
+ $encoded_string = base64_encode(mb_substr($string,$iStartCharNum,$iCharNum-$iStartCharNum,$charset));
+
+ // Check encoded string length
+ if(strlen($encoded_string)>$iMaxLength) {
+ // if string exceeds max length, reduce number of encoded characters and add encoded string part to array
+ $aRet[] = base64_encode(mb_substr($string,$iStartCharNum,$iCharNum-$iStartCharNum-1,$charset));
+
+ // set new starting character
+ $iStartCharNum = $iCharNum-1;
+
+ // encode last char (in case it is last character in string)
+ $encoded_string = base64_encode(mb_substr($string,$iStartCharNum,$iCharNum-$iStartCharNum,$charset));
+ } // if string is shorter than max length - add next character
+ }
+
+ // add last encoded string to array
+ $aRet[] = $encoded_string;
+
+ // set initial return string
+ $sRet = '';
+
+ // loop through encoded strings
+ foreach($aRet as $string) {
+ // TODO: Do we want to control EOL (end-of-line) marker
+ if ($sRet!='') $sRet.= " ";
+
+ // add header tags and encoded string to return string
+ $sRet.= '=?'.$charset.'?B?'.$string.'?=';
+ }
+
+ return $sRet;
+}
+
/* This function trys to locate the entity_id of a specific mime element */
function find_ent_id($id, $message) {
for ($i = 0, $ret = ''; $ret == '' && $i < count($message->entities); $i++) {
} else {
if (strcasecmp($message->entities[$i]->header->id, $id) == 0) {
// if (sq_check_save_extension($message->entities[$i])) {
+ return $message->entities[$i]->entity_id;
+// }
+ } elseif (!empty($message->entities[$i]->header->parameters['name'])) {
+ /**
+ * This is part of a fix for Outlook Express 6.x generating
+ * cid URLs without creating content-id headers
+ * @@JA - 20050207
+ */
+ if (strcasecmp($message->entities[$i]->header->parameters['name'], $id) == 0) {
return $message->entities[$i]->entity_id;
-// }
+ }
}
}
}
** HTMLFILTER ROUTINES
*/
+/**
+ * This function checks attribute values for entity-encoded values
+ * and returns them translated into 8-bit strings so we can run
+ * checks on them.
+ *
+ * @param $attvalue A string to run entity check against.
+ * @return Nothing, modifies a reference value.
+ */
+function sq_defang(&$attvalue){
+ $me = 'sq_defang';
+ /**
+ * Skip this if there aren't ampersands or backslashes.
+ */
+ if (strpos($attvalue, '&') === false
+ && strpos($attvalue, '\\') === false){
+ return;
+ }
+ $m = false;
+ do {
+ $m = false;
+ $m = $m || sq_deent($attvalue, '/\�*(\d+);*/s');
+ $m = $m || sq_deent($attvalue, '/\�*((\d|[a-f])+);*/si', true);
+ $m = $m || sq_deent($attvalue, '/\\\\(\d+)/s', true);
+ } while ($m == true);
+ $attvalue = stripslashes($attvalue);
+}
+
+/**
+ * Kill any tabs, newlines, or carriage returns. Our friends the
+ * makers of the browser with 95% market value decided that it'd
+ * be funny to make "java[tab]script" be just as good as "javascript".
+ *
+ * @param attvalue The attribute value before extraneous spaces removed.
+ * @return attvalue Nothing, modifies a reference value.
+ */
+function sq_unspace(&$attvalue){
+ $me = 'sq_unspace';
+ if (strcspn($attvalue, "\t\r\n\0 ") != strlen($attvalue)){
+ $attvalue = str_replace(Array("\t", "\r", "\n", "\0", " "),
+ Array('', '', '', '', ''), $attvalue);
+ }
+}
+
/**
* This function returns the final tag out of the tag name, an array
- * of attributes, and the type of the tag. This function is called by
+ * of attributes, and the type of the tag. This function is called by
* sq_sanitize internally.
*
* @param $tagname the name of the tag.
/**
* This function skips any whitespace from the current position within
* a string and to the next non-whitespace value.
- *
+ *
* @param $body the string
* @param $offset the offset within the string where we should start
* looking for the next non-whitespace character.
$me = 'sq_findnxreg';
$matches = Array();
$retarr = Array();
- preg_match("%^(.*?)($reg)%s", substr($body, $offset), $matches);
- if (!$matches{0}){
+ preg_match("%^(.*?)($reg)%si", substr($body, $offset), $matches);
+ if (!isset($matches{0}) || !$matches{0}){
$retarr = false;
} else {
$retarr{0} = $offset + strlen($matches{1});
* 2. Closing tag, e.g.:
* </a>
* 3. XHTML-style content-less tag, e.g.:
- * <img src="blah"/>
+ * <img src="blah" />
*/
$tagtype = false;
switch (substr($body, $pos, 1)){
* '>' indicating the end of the tag entirely.
* '\s' indicating the end of the tag name.
* '/' indicating that this is type-3 xhtml tag.
- *
+ *
* Whatever else we find there indicates an invalid tag.
*/
switch ($match){
case '/':
/**
* This is an xhtml-style tag with a closing / at the
- * end, like so: <img src="blah"/>. Check if it's followed
+ * end, like so: <img src="blah" />. Check if it's followed
* by the closing bracket. If not, then this tag is invalid
*/
if (substr($body, $pos, 2) == "/>"){
/**
* This is an invalid tag! Look for the next closing ">".
*/
- $gt = sq_findnxstr($body, $offset, ">");
+ $gt = sq_findnxstr($body, $lt, ">");
return Array(false, false, false, $lt, $gt);
}
break;
* double quotes. Type 4 we convert into:
* attrname="yes".
*/
- $regary = sq_findnxreg($body, $pos, "[^\w\-_]");
+ $regary = sq_findnxreg($body, $pos, "[^:\w\-_]");
if ($regary == false){
/**
* Looks like body ended before the end of tag.
case '/':
/**
* This is an xhtml-style tag with a closing / at the
- * end, like so: <img src="blah"/>. Check if it's followed
+ * end, like so: <img src="blah" />. Check if it's followed
* by the closing bracket. If not, then this tag is invalid
*/
if (substr($body, $pos, 2) == "/>"){
}
/**
- * This function checks attribute values for entity-encoded values
- * and returns them translated into 8-bit strings so we can run
- * checks on them.
+ * Translates entities into literal values so they can be checked.
*
- * @param $attvalue A string to run entity check against.
- * @return Translated value.
+ * @param $attvalue the by-ref value to check.
+ * @param $regex the regular expression to check against.
+ * @param $hex whether the entites are hexadecimal.
+ * @return True or False depending on whether there were matches.
*/
-function sq_deent($attvalue){
+function sq_deent(&$attvalue, $regex, $hex=false){
$me = 'sq_deent';
- /**
- * See if we have to run the checks first. All entities must start
- * with "&".
- */
- if (strpos($attvalue, "&") === false){
- return $attvalue;
- }
- /**
- * Check named entities first.
- */
- $trans = get_html_translation_table(HTML_ENTITIES);
- /**
- * Leave " in, as it can mess us up.
- */
- $trans = array_flip($trans);
- unset($trans{"""});
- while (list($ent, $val) = each($trans)){
- $attvalue = preg_replace("/$ent*(\W)/si", "$val\\1", $attvalue);
- }
- /**
- * Now translate numbered entities from 1 to 255 if needed.
- */
- if (strpos($attvalue, "#") !== false){
- $omit = Array(34, 39);
- for ($asc=1; $asc<256; $asc++){
- if (!in_array($asc, $omit)){
- $chr = chr($asc);
- $attvalue = preg_replace("/\�*$asc;*(\D)/si", "$chr\\1",
- $attvalue);
- $attvalue = preg_replace("/\�*".dechex($asc).";*(\W)/si",
- "$chr\\1", $attvalue);
+ $ret_match = false;
+ preg_match_all($regex, $attvalue, $matches);
+ if (is_array($matches) && sizeof($matches[0]) > 0){
+ $repl = Array();
+ for ($i = 0; $i < sizeof($matches[0]); $i++){
+ $numval = $matches[1][$i];
+ if ($hex){
+ $numval = hexdec($numval);
}
+ $repl{$matches[0][$i]} = chr($numval);
}
+ $attvalue = strtr($attvalue, $repl);
+ return true;
+ } else {
+ return false;
}
- return $attvalue;
}
/**
* @param $id message id
* @return Array with modified attributes.
*/
-function sq_fixatts($tagname,
- $attary,
+function sq_fixatts($tagname,
+ $attary,
$rm_attnames,
$bad_attvals,
$add_attr_to_tag,
}
}
/**
- * Remove any entities.
+ * Remove any backslashes, entities, and extraneous whitespace.
*/
- $attvalue = sq_deent($attvalue);
+ sq_defang($attvalue);
+ sq_unspace($attvalue);
/**
* Now let's run checks on the attvalues.
* Second one is replacements
*/
list($valmatch, $valrepl) = $valary;
- $newvalue =
+ $newvalue =
preg_replace($valmatch, $valrepl, $attvalue);
if ($newvalue != $attvalue){
$attary{$attname} = $newvalue;
}
}
}
+
+ /**
+ * Replace empty src tags with the blank image. src is only used
+ * for frames, images, and image inputs. Doing a replace should
+ * not affect them working as should be, however it will stop
+ * IE from being kicked off when src for img tags are not set
+ */
+ if (($attname == 'src') && ($attvalue == '""')) {
+ $attary{$attname} = '"' . SM_PATH . 'images/blank.png"';
+ }
+
/**
* Turn cid: urls into http-friendly ones.
*/
if (preg_match("/^[\'\"]\s*cid:/si", $attvalue)){
$attary{$attname} = sq_cid2http($message, $id, $attvalue, $mailbox);
}
+
+ /**
+ * "Hack" fix for Outlook using propriatary outbind:// protocol in img tags.
+ * One day MS might actually make it match something useful, for now, falling
+ * back to using cid2http, so we can grab the blank.png.
+ */
+ if (preg_match("/^[\'\"]\s*outbind:\/\//si", $attvalue)) {
+ $attary{$attname} = sq_cid2http($message, $id, $attvalue, $mailbox);
+ }
+
}
/**
* See if we need to append any attributes to this tag.
/**
* This function edits the style definition to make them friendly and
- * usable in squirrelmail.
- *
+ * usable in SquirrelMail.
+ *
* @param $message the message object
* @param $id the message id
* @param $content a string with whatever is between <style> and </style>
+ * @param $mailbox the message mailbox
* @return a string with edited content.
*/
-function sq_fixstyle($message, $id, $content){
+function sq_fixstyle($body, $pos, $message, $id, $mailbox){
global $view_unsafe_images;
$me = 'sq_fixstyle';
+ $ret = sq_findnxreg($body, $pos, '</\s*style\s*>');
+ if ($ret == FALSE){
+ return array(FALSE, strlen($body));
+ }
+ $newpos = $ret[0] + strlen($ret[2]);
+ $content = $ret[1];
/**
- * First look for general BODY style declaration, which would be
- * like so:
- * body {background: blah-blah}
-
* and change it to .bodyclass so we can just assign it to a <div>
- */
+ * First look for general BODY style declaration, which would be
+ * like so:
+ * body {background: blah-blah}
+ * and change it to .bodyclass so we can just assign it to a <div>
+ */
$content = preg_replace("|body(\s*\{.*?\})|si", ".bodyclass\\1", $content);
$secremoveimg = '../images/' . _("sec_remove_eng.png");
/**
- * Fix url('blah') declarations.
- */
- $content = preg_replace("|url\(([\'\"])\s*\S+script\s*:.*?([\'\"])\)|si",
- "url(\\1$secremoveimg\\2)", $content);
- /**
- * Fix url('https*://.*) declarations but only if $view_unsafe_images
- * is false.
- */
- if (!$view_unsafe_images){
- $content = preg_replace("|url\(([\'\"])\s*https*:.*?([\'\"])\)|si",
- "url(\\1$secremoveimg\\2)", $content);
- }
-
- /**
- * Fix urls that refer to cid:
- */
- while (preg_match("|url\(([\'\"]\s*cid:.*?[\'\"])\)|si", $content,
- $matches)){
- $cidurl = $matches{1};
- $httpurl = sq_cid2http($message, $id, $cidurl);
- $content = preg_replace("|url\($cidurl\)|si",
- "url($httpurl)", $content);
+ * Fix url('blah') declarations.
+ */
+ // $content = preg_replace("|url\s*\(\s*([\'\"])\s*\S+script\s*:.*?([\'\"])\s*\)|si",
+ // "url(\\1$secremoveimg\\2)", $content);
+ // remove NUL
+ $content = str_replace("\0", "", $content);
+ // NB I insert NUL characters to keep to avoid an infinite loop. They are removed after the loop.
+ while (preg_match("/url\s*\(\s*[\'\"]?([^:]+):(.*)?[\'\"]?\s*\)/si", $content, $matches)) {
+ $sProto = strtolower($matches[1]);
+ switch ($sProto) {
+ /**
+ * Fix url('https*://.*) declarations but only if $view_unsafe_images
+ * is false.
+ */
+ case 'https':
+ case 'http':
+ if (!$view_unsafe_images){
+ $sExpr = "/url\s*\(\s*([\'\"])\s*$sProto*:.*?([\'\"])\s*\)/si";
+ $content = preg_replace($sExpr, "u\0r\0l(\\1$secremoveimg\\2)", $content);
+ }
+ break;
+ /**
+ * Fix urls that refer to cid:
+ */
+ case 'cid':
+ $cidurl = 'cid:'. $matches[2];
+ $httpurl = sq_cid2http($message, $id, $cidurl, $mailbox);
+ $content = preg_replace("|url\s*\(\s*$cidurl\s*\)|si",
+ "u\0r\0l($httpurl)", $content);
+ break;
+ default:
+ /**
+ * replace url with protocol other then the white list
+ * http,https and cid by an empty string.
+ */
+ $content = preg_replace("/url\s*\(\s*[\'\"]?([^:]+):(.*)?[\'\"]?\s*\)/si",
+ "", $content);
+ break;
+ }
+ break;
}
+ // remove NUL
+ $content = str_replace("\0", "", $content);
+
+ /**
+ * Remove any backslashes, entities, and extraneous whitespace.
+ */
+ $contentTemp = $content;
+ sq_defang($contentTemp);
+ sq_unspace($contentTemp);
/**
* Fix stupid css declarations which lead to vulnerabilities
* in IE.
*/
- $match = Array('/expression/si',
- '/behaviou*r/si',
- '/binding/si');
- $replace = Array('idiocy', 'idiocy', 'idiocy');
- $content = preg_replace($match, $replace, $content);
- return $content;
+ $match = Array('/expression/i',
+ '/behaviou*r/i',
+ '/binding/i',
+ '/include-source/i');
+ $replace = Array('idiocy', 'idiocy', 'idiocy', 'idiocy');
+ $contentNew = preg_replace($match, $replace, $contentTemp);
+ if ($contentNew !== $contentTemp) {
+ // insecure css declarations are used. From now on we don't care
+ // anymore if the css is destroyed by sq_deent, sq_unspace or sq_unbackslash
+ $content = $contentNew;
+ }
+ return array($content, $newpos);
}
+
/**
* This function converts cid: url's into the ones that can be viewed in
* the browser.
* @param $message the message object
* @param $id the message id
* @param $cidurl the cid: url.
+ * @param $mailbox the message mailbox
* @return a string with a http-friendly url
*/
function sq_cid2http($message, $id, $cidurl, $mailbox){
* Get rid of quotes.
*/
$quotchar = substr($cidurl, 0, 1);
- $cidurl = str_replace($quotchar, "", $cidurl);
+ if ($quotchar == '"' || $quotchar == "'"){
+ $cidurl = str_replace($quotchar, "", $cidurl);
+ } else {
+ $quotchar = '';
+ }
$cidurl = substr(trim($cidurl), 4);
+
+ $match_str = '/\{.*?\}\//';
+ $str_rep = '';
+ $cidurl = preg_replace($match_str, $str_rep, $cidurl);
+
$linkurl = find_ent_id($cidurl, $message);
/* in case of non-save cid links $httpurl should be replaced by a sort of
unsave link image */
$httpurl = '';
- if ($linkurl) {
- $httpurl = $quotchar . '../src/download.php?absolute_dl=true&' .
- "passed_id=$id&mailbox=" . urlencode($mailbox) .
- '&ent_id=' . $linkurl . $quotchar;
+
+ /**
+ * This is part of a fix for Outlook Express 6.x generating
+ * cid URLs without creating content-id headers. These images are
+ * not part of the multipart/related html mail. The html contains
+ * <img src="cid:{some_id}/image_filename.ext"> references to
+ * attached images with as goal to render them inline although
+ * the attachment disposition property is not inline.
+ */
+
+ if (empty($linkurl)) {
+ if (preg_match('/{.*}\//', $cidurl)) {
+ $cidurl = preg_replace('/{.*}\//','', $cidurl);
+ if (!empty($cidurl)) {
+ $linkurl = find_ent_id($cidurl, $message);
+ }
+ }
}
+
+ if (!empty($linkurl)) {
+ $httpurl = $quotchar . SM_PATH . 'src/download.php?absolute_dl=true&' .
+ "passed_id=$id&mailbox=" . urlencode($mailbox) .
+ '&ent_id=' . $linkurl . $quotchar;
+ } else {
+ /**
+ * If we couldn't generate a proper img url, drop in a blank image
+ * instead of sending back empty, otherwise it causes unusual behaviour
+ */
+ $httpurl = $quotchar . SM_PATH . 'images/blank.png' . $quotchar;
+ }
+
return $httpurl;
}
* This function changes the <body> tag into a <div> tag since we
* can't really have a body-within-body.
*
- * @param $attary an array of attributes and values of <body>
- * @return a modified array of attributes to be set for <div>
+ * @param $attary an array of attributes and values of <body>
+ * @param $mailbox mailbox we're currently reading (for cid2http)
+ * @param $message current message (for cid2http)
+ * @param $id current message id (for cid2http)
+ * @return a modified array of attributes to be set for <div>
*/
-function sq_body2div($attary){
+function sq_body2div($attary, $mailbox, $message, $id){
$me = 'sq_body2div';
$divattary = Array('class' => "'bodyclass'");
- $bgcolor = '#ffffff';
$text = '#000000';
+ $has_bgc_stl = $has_txt_stl = false;
$styledef = '';
if (is_array($attary) && sizeof($attary) > 0){
foreach ($attary as $attname=>$attvalue){
$attvalue = str_replace($quotchar, "", $attvalue);
switch ($attname){
case 'background':
+ $attvalue = sq_cid2http($message, $id, $attvalue, $mailbox);
$styledef .= "background-image: url('$attvalue'); ";
break;
case 'bgcolor':
+ $has_bgc_stl = true;
$styledef .= "background-color: $attvalue; ";
break;
case 'text':
+ $has_txt_stl = true;
$styledef .= "color: $attvalue; ";
break;
}
}
+ // Outlook defines a white bgcolor and no text color. This can lead to
+ // white text on a white bg with certain themes.
+ if ($has_bgc_stl && !$has_txt_stl) {
+ $styledef .= "color: $text; ";
+ }
if (strlen($styledef) > 0){
$divattary{"style"} = "\"$styledef\"";
}
* special description.
*
* Since the description is quite lengthy, see it here:
- * http://www.mricon.com/html/phpfilter.html
+ * http://linux.duke.edu/projects/mini/htmlfilter/
*
* @param $body the string with HTML you wish to filter
* @param $tag_list see description above
* @param $id message id
* @return sanitized html safe to show on your pages.
*/
-function sq_sanitize($body,
- $tag_list,
+function sq_sanitize($body,
+ $tag_list,
$rm_tags_with_content,
$self_closing_tags,
$force_tag_closing,
$mailbox
){
$me = 'sq_sanitize';
+ $rm_tags = array_shift($tag_list);
/**
* Normalize rm_tags and rm_tags_with_content.
*/
- @array_walk($rm_tags, 'sq_casenormalize');
+ @array_walk($tag_list, 'sq_casenormalize');
@array_walk($rm_tags_with_content, 'sq_casenormalize');
@array_walk($self_closing_tags, 'sq_casenormalize');
/**
* false means remove these tags
* true means allow these tags
*/
- $rm_tags = array_shift($tag_list);
$curpos = 0;
$open_tags = Array();
- $trusted = "<!-- begin sanitized html -->\n";
+ $trusted = "\n<!-- begin sanitized html -->\n";
$skip_content = false;
/**
* Take care of netscape's stupid javascript entities like
*/
$body = preg_replace("/&(\{.*?\};)/si", "&\\1", $body);
- while (($curtag=sq_getnxtag($body, $curpos)) != FALSE){
+ while (($curtag = sq_getnxtag($body, $curpos)) != FALSE){
list($tagname, $attary, $tagtype, $lt, $gt) = $curtag;
$free_content = substr($body, $curpos, $lt-$curpos);
/**
* Take care of <style>
*/
- if ($tagname == "style" && $tagtype == 2){
- /**
- * This is a closing </style>. Edit the
- * content before we apply it.
- */
- $free_content = sq_fixstyle($message, $id, $free_content);
+ if ($tagname == "style" && $tagtype == 1){
+ list($free_content, $curpos) =
+ sq_fixstyle($body, $gt+1, $message, $id, $mailbox);
+ if ($free_content != FALSE){
+ $trusted .= sq_tagprint($tagname, $attary, $tagtype);
+ $trusted .= $free_content;
+ $trusted .= sq_tagprint($tagname, false, 2);
+ }
+ continue;
}
if ($skip_content == false){
$trusted .= $free_content;
if ($skip_content == false){
if ($tagname == "body"){
$tagname = "div";
- } else {
- if (isset($open_tags{$tagname}) &&
+ }
+ if (isset($open_tags{$tagname}) &&
$open_tags{$tagname} > 0){
- $open_tags{$tagname}--;
- } else {
- $tagname = false;
- }
+ $open_tags{$tagname}--;
+ } else {
+ $tagname = false;
}
}
}
* tagtype appropriately.
*/
if ($tagtype == 1
- && in_array($tagname, $self_closing_tags)){
- $tagtype=3;
+ && in_array($tagname, $self_closing_tags)){
+ $tagtype = 3;
}
/**
* See if we should skip this tag and any content
* inside it.
*/
if ($tagtype == 1 &&
- in_array($tagname, $rm_tags_with_content)){
+ in_array($tagname, $rm_tags_with_content)){
$skip_content = $tagname;
} else {
- if (($rm_tags == false
- && in_array($tagname, $tag_list)) ||
- ($rm_tags == true &&
- !in_array($tagname, $tag_list))){
+ if (($rm_tags == false
+ && in_array($tagname, $tag_list)) ||
+ ($rm_tags == true &&
+ !in_array($tagname, $tag_list))){
$tagname = false;
} else {
+ /**
+ * Convert body into div.
+ */
+ if ($tagname == "body"){
+ $tagname = "div";
+ $attary = sq_body2div($attary, $mailbox,
+ $message, $id);
+ }
if ($tagtype == 1){
if (isset($open_tags{$tagname})){
$open_tags{$tagname}++;
$mailbox
);
}
- /**
- * Convert body into div.
- */
- if ($tagname == "body"){
- $tagname = "div";
- $attary = sq_body2div($attary, $message, $id);
- }
}
}
}
*
* @param $body the body of the message
* @param $id the id of the message
+
+ * @param $message
+ * @param $mailbox
+ * @param boolean $take_mailto_links When TRUE, converts mailto: links
+ * into internal SM compose links
+ * (optional; default = TRUE)
* @return a string with html safe to display in the browser.
*/
-function magicHTML($body, $id, $message, $mailbox = 'INBOX') {
+function magicHTML($body, $id, $message, $mailbox = 'INBOX', $take_mailto_links =true) {
+
+ require_once(SM_PATH . 'functions/url_parser.php'); // for $MailTo_PReg_Match
+
global $attachment_common_show_images, $view_unsafe_images,
$has_unsafe_images;
/**
*/
$attachment_common_show_images = false;
$tag_list = Array(
- false,
- "object",
- "meta",
- "html",
- "head",
- "base",
- "link",
- "frame",
- "iframe"
- );
+ false,
+ "object",
+ "meta",
+ "html",
+ "head",
+ "base",
+ "link",
+ "frame",
+ "iframe",
+ "plaintext",
+ "marquee"
+ );
$rm_tags_with_content = Array(
- "script",
- "applet",
- "embed",
- "title"
- );
+ "script",
+ "applet",
+ "embed",
+ "title",
+ "frameset",
+ "xmp",
+ "xml"
+ );
$self_closing_tags = Array(
- "img",
- "br",
- "hr",
- "input"
- );
+ "img",
+ "br",
+ "hr",
+ "input",
+ "outbind"
+ );
- $force_tag_closing = false;
+ $force_tag_closing = true;
$rm_attnames = Array(
- "/.*/" =>
- Array(
- "/target/si",
- "/^on.*/si",
- "/^dynsrc/si",
- "/^data.*/si"
- )
- );
+ "/.*/" =>
+ Array(
+ "/target/i",
+ "/^on.*/i",
+ "/^dynsrc/i",
+ "/^data.*/i",
+ "/^lowsrc.*/i"
+ )
+ );
$secremoveimg = "../images/" . _("sec_remove_eng.png");
$bad_attvals = Array(
- "/.*/" =>
+ "/.*/" =>
Array(
"/^src|background/i" =>
+ Array(
Array(
- Array(
- "|^([\'\"])\s*\.\./.*([\'\"])|si",
- "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si",
- "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si",
- "/^([\'\"])\s*about\s*:.*([\'\"])/si"
- ),
- Array(
- "\\1$secremoveimg\\2",
- "\\1$secremoveimg\\2",
- "\\1$secremoveimg\\2",
- "\\1$secremoveimg\\2"
- )
+ "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si",
+ "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si",
+ "/^([\'\"])\s*about\s*:.*([\'\"])/si"
),
+ Array(
+ "\\1$secremoveimg\\2",
+ "\\1$secremoveimg\\2",
+ "\\1$secremoveimg\\2",
+ )
+ ),
"/^href|action/i" =>
+ Array(
Array(
- Array(
- "|^([\'\"])\s*\.\./.*([\'\"])|si",
- "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si",
- "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si",
- "/^([\'\"])\s*about\s*:.*([\'\"])/si"
- ),
- Array(
- "\\1#\\2",
- "\\1#\\2",
- "\\1#\\2",
- "\\1#\\2"
- )
+ "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si",
+ "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si",
+ "/^([\'\"])\s*about\s*:.*([\'\"])/si"
),
- "/^style/si" =>
Array(
- Array(
- "/expression/si",
- "/binding/si",
- "/behaviou*r/si",
- "|url\(([\'\"])\s*\.\./.*([\'\"])\)|si",
- "/url\(([\'\"])\s*\S+script\s*:.*([\'\"])\)/si",
- "/url\(([\'\"])\s*mocha\s*:.*([\'\"])\)/si",
- "/url\(([\'\"])\s*about\s*:.*([\'\"])\)/si"
- ),
- Array(
- "idiocy",
- "idiocy",
- "idiocy",
- "url(\\1#\\2)",
- "url(\\1#\\2)",
- "url(\\1#\\2)",
- "url(\\1#\\2)"
- )
- )
+ "\\1#\\1",
+ "\\1#\\1",
+ "\\1#\\1"
+ )
+ ),
+ "/^style/i" =>
+ Array(
+ Array(
+ "/expression/i",
+ "/binding/i",
+ "/behaviou*r/i",
+ "/include-source/i",
+ "/position\s*:\s*absolute/i",
+ "/url\s*\(\s*([\'\"])\s*\S+script\s*:.*([\'\"])\s*\)/si",
+ "/url\s*\(\s*([\'\"])\s*mocha\s*:.*([\'\"])\s*\)/si",
+ "/url\s*\(\s*([\'\"])\s*about\s*:.*([\'\"])\s*\)/si",
+ "/(.*)\s*:\s*url\s*\(\s*([\'\"]*)\s*\S+script\s*:.*([\'\"]*)\s*\)/si"
+ ),
+ Array(
+ "idiocy",
+ "idiocy",
+ "idiocy",
+ "idiocy",
+ "",
+ "url(\\1#\\1)",
+ "url(\\1#\\1)",
+ "url(\\1#\\1)",
+ "\\1:url(\\2#\\3)"
+ )
)
+ )
);
if( !sqgetGlobalVar('view_unsafe_images', $view_unsafe_images, SQ_GET) ) {
- $view_unsafe_images = false;
+ $view_unsafe_images = false;
}
if (!$view_unsafe_images){
/**
* Remove any references to http/https if view_unsafe_images set
* to false.
*/
- array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[0],
- '/^([\'\"])\s*https*:.*([\'\"])/si');
- array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[1],
- "\\1$secremoveimg\\2");
- array_push($bad_attvals{'/.*/'}{'/^style/si'}[0],
- '/url\(([\'\"])\s*https*:.*([\'\"])\)/si');
- array_push($bad_attvals{'/.*/'}{'/^style/si'}[1],
- "url(\\1$secremoveimg\\2)");
+ array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[0],
+ '/^([\'\"])\s*https*:.*([\'\"])/si');
+ array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[1],
+ "\\1$secremoveimg\\1");
+ array_push($bad_attvals{'/.*/'}{'/^style/i'}[0],
+ '/url\([\'\"]?https?:[^\)]*[\'\"]?\)/si');
+ array_push($bad_attvals{'/.*/'}{'/^style/i'}[1],
+ "url(\\1$secremoveimg\\1)");
}
$add_attr_to_tag = Array(
- "/^a$/si" => Array('target'=>'"_new"')
- );
- $trusted = sq_sanitize($body,
- $tag_list,
+ "/^a$/i" =>
+ Array('target'=>'"_blank"',
+ 'title'=>'"'._("This external link will open in a new window").'"'
+ )
+ );
+ $trusted = sq_sanitize($body,
+ $tag_list,
$rm_tags_with_content,
$self_closing_tags,
$force_tag_closing,
$id,
$mailbox
);
- if (preg_match("|$secremoveimg|si", $trusted)){
+ if (preg_match("|$secremoveimg|i", $trusted)){
$has_unsafe_images = true;
- }
+ }
+
+ // we want to parse mailto's in HTML output, change to SM compose links
+ // this is a modified version of code from url_parser.php... but Marc is
+ // right: we need a better filtering implementation; adding this randomly
+ // here is not a great solution
+ //
+ if ($take_mailto_links) {
+ // parseUrl($trusted); // this even parses URLs inside of tags... too aggressive
+ global $MailTo_PReg_Match;
+ $MailTo_PReg_Match = '/mailto:' . substr($MailTo_PReg_Match, 1);
+ if ((preg_match_all($MailTo_PReg_Match, $trusted, $regs)) && ($regs[0][0] != '')) {
+ foreach ($regs[0] as $i => $mailto_before) {
+ $mailto_params = $regs[10][$i];
+ // get rid of any tailing quote since we have to add send_to to the end
+ //
+ if (substr($mailto_before, strlen($mailto_before) - 1) == '"')
+ $mailto_before = substr($mailto_before, 0, strlen($mailto_before) - 1);
+ if (substr($mailto_params, strlen($mailto_params) - 1) == '"')
+ $mailto_params = substr($mailto_params, 0, strlen($mailto_params) - 1);
+
+ if ($regs[1][$i]) { //if there is an email addr before '?', we need to merge it with the params
+ $to = 'to=' . $regs[1][$i];
+ if (strpos($mailto_params, 'to=') > -1) //already a 'to='
+ $mailto_params = str_replace('to=', $to . '%2C%20', $mailto_params);
+ else {
+ if ($mailto_params) //already some params, append to them
+ $mailto_params .= '&' . $to;
+ else
+ $mailto_params .= '?' . $to;
+ }
+ }
+
+ $url_str = preg_replace(array('/to=/i', '/(?<!b)cc=/i', '/bcc=/i'), array('send_to=', 'send_to_cc=', 'send_to_bcc='), $mailto_params);
+
+ // we'll already have target=_blank, no need to allow comp_in_new
+ // here (which would be a lot more work anyway)
+ //
+ global $compose_new_win;
+ $temp_comp_in_new = $compose_new_win;
+ $compose_new_win = 0;
+ $comp_uri = makeComposeLink('src/compose.php' . $url_str, $mailto_before);
+ $compose_new_win = $temp_comp_in_new;
+
+ // remove <a href=" and anything after the next quote (we only
+ // need the uri, not the link HTML) in compose uri
+ //
+ $comp_uri = substr($comp_uri, 9);
+ $comp_uri = substr($comp_uri, 0, strpos($comp_uri, '"', 1));
+ $trusted = str_replace($mailto_before, $comp_uri, $trusted);
+ }
+ }
+ }
+
return $trusted;
}
-?>
+/**
+ * function SendDownloadHeaders - send file to the browser
+ *
+ * Original Source: SM core src/download.php
+ * moved here to make it available to other code, and separate
+ * front end from back end functionality.
+ *
+ * @param string $type0 first half of mime type
+ * @param string $type1 second half of mime type
+ * @param string $filename filename to tell the browser for downloaded file
+ * @param boolean $force whether to force the download dialog to pop
+ * @param optional integer $filesize send the Content-Header and length to the browser
+ * @return void
+ */
+function SendDownloadHeaders($type0, $type1, $filename, $force, $filesize=0) {
+ global $languages, $squirrelmail_language;
+ $isIE = $isIE6 = 0;
+
+ sqgetGlobalVar('HTTP_USER_AGENT', $HTTP_USER_AGENT, SQ_SERVER);
+
+ if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false &&
+ strstr($HTTP_USER_AGENT, 'Opera') === false) {
+ $isIE = 1;
+ }
+
+ if (strstr($HTTP_USER_AGENT, 'compatible; MSIE 6') !== false &&
+ strstr($HTTP_USER_AGENT, 'Opera') === false) {
+ $isIE6 = 1;
+ }
+
+ if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename')) {
+ $filename =
+ call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename', $filename, $HTTP_USER_AGENT);
+ } else {
+ $filename = ereg_replace('[\\/:\*\?"<>\|;]', '_', str_replace(' ', ' ', $filename));
+ }
+
+ // A Pox on Microsoft and it's Internet Explorer!
+ //
+ // IE has lots of bugs with file downloads.
+ // It also has problems with SSL. Both of these cause problems
+ // for us in this function.
+ //
+ // See this article on Cache Control headers and SSL
+ // http://support.microsoft.com/default.aspx?scid=kb;en-us;323308
+ //
+ // The best thing you can do for IE is to upgrade to the latest
+ // version
+ //set all the Cache Control Headers for IE
+ if ($isIE) {
+ $filename=rawurlencode($filename);
+ header ("Pragma: public");
+ header ("Cache-Control: no-store, max-age=0, no-cache, must-revalidate"); // HTTP/1.1
+ header ("Cache-Control: post-check=0, pre-check=0", false);
+ header ("Cache-Control: private");
+
+ //set the inline header for IE, we'll add the attachment header later if we need it
+ header ("Content-Disposition: inline; filename=$filename");
+ }
+
+ if (!$force) {
+ // Try to show in browser window
+ header ("Content-Disposition: inline; filename=\"$filename\"");
+ header ("Content-Type: $type0/$type1; name=\"$filename\"");
+ } else {
+ // Try to pop up the "save as" box
+
+ // IE makes this hard. It pops up 2 save boxes, or none.
+ // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP
+ // http://support.microsoft.com/default.aspx?scid=kb;EN-US;260519
+ // But, according to Microsoft, it is "RFC compliant but doesn't
+ // take into account some deviations that allowed within the
+ // specification." Doesn't that mean RFC non-compliant?
+ // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP
+
+ // all browsers need the application/octet-stream header for this
+ header ("Content-Type: application/octet-stream; name=\"$filename\"");
+
+ // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp
+ // Do not have quotes around filename, but that applied to
+ // "attachment"... does it apply to inline too?
+ header ("Content-Disposition: attachment; filename=\"$filename\"");
+
+ if ($isIE && !$isIE6) {
+ // This combination seems to work mostly. IE 5.5 SP 1 has
+ // known issues (see the Microsoft Knowledge Base)
+
+ // This works for most types, but doesn't work with Word files
+ header ("Content-Type: application/download; name=\"$filename\"");
+
+ // These are spares, just in case. :-)
+ //header("Content-Type: $type0/$type1; name=\"$filename\"");
+ //header("Content-Type: application/x-msdownload; name=\"$filename\"");
+ //header("Content-Type: application/octet-stream; name=\"$filename\"");
+ } else {
+ // another application/octet-stream forces download for Netscape
+ header ("Content-Type: application/octet-stream; name=\"$filename\"");
+ }
+ }
+
+ //send the content-length header if the calling function provides it
+ if ($filesize > 0) {
+ header("Content-Length: $filesize");
+ }
+
+} // end fn SendDownloadHeaders
+
+?>
\ No newline at end of file
projects / squirrelmail.git / blobdiff