<?php
/**
- * 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.
- *
- * $Id$
- */
+* mime.php
+*
+* Copyright (c) 1999-2005 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.
+*
+* @version $Id$
+* @package squirrelmail
+*/
+/** The typical includes... */
require_once(SM_PATH . 'functions/imap.php');
require_once(SM_PATH . 'functions/attachment_common.php');
-/* --------------------------------------------------------------------------------- */
-/* MIME DECODING */
-/* --------------------------------------------------------------------------------- */
-
-/* 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.
- */
+/* -------------------------------------------------------------------------- */
+/* MIME DECODING */
+/* -------------------------------------------------------------------------- */
+/**
+* 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. */
global $color, $mailbox;
/* removed urldecode because $_GET is auto urldecoded ??? */
displayPageHeader( $color, $mailbox );
- echo "<BODY TEXT=\"$color[8]\" BGCOLOR=\"$color[4]\" LINK=\"$color[7]\" VLINK=\"$color[7]\" ALINK=\"$color[7]\">\n\n" .
- '<CENTER>';
$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 provided bodystructure by your imap-server").':<br /><br />';
+ $errormessage .= '<pre>' . htmlspecialchars($read) . '</pre>';
plain_error_message( $errormessage, $color );
echo '</body></html>';
exit;
/* This starts the parsing of a particular structure. It is called recursively,
- * so it can be passed different structures. It returns an object of type
- * $message.
- * First, it checks to see if it is a multipart message. If it is, then it
- * handles that as it sees is necessary. If it is just a regular entity,
- * then it parses it and adds the necessary header information (by calling out
- * to mime_get_elements()
- */
-
-function mime_fetch_body($imap_stream, $id, $ent_id=1) {
- global $uid_support;
+* so it can be passed different structures. It returns an object of type
+* $message.
+* First, it checks to see if it is a multipart message. If it is, then it
+* handles that as it sees is necessary. If it is just a regular entity,
+* then it parses it and adds the necessary header information (by calling out
+* to mime_get_elements()
+*/
+
+function mime_fetch_body($imap_stream, $id, $ent_id=1, $fetch_size=0) {
/* Do a bit of error correction. If we couldn't find the entity id, just guess
- * that it is the first one. That is usually the case anyway.
- */
+ * that it is the first one. That is usually the case anyway.
+ */
+
if (!$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)) ;
if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) {
$ret = substr($wholemessage, 0, $regs[1]);
/* There is some information in the content info header that could be important
- * in order to parse html messages. Let's get them here.
- */
+ * in order to parse html messages. Let's get them here.
+ */
// if ($ret{0} == '<') {
-// $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, $uid_support);
+// $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, TRUE);
// }
} else if (ereg('"([^"]*)"', $topline, $regs)) {
$ret = $regs[1];
'&message=' . urlencode($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, $uid_support);
+ echo '<tt><br />' .
+ '<table width="80%"><tr>' .
+ '<tr><td colspan="2">' .
+ _("Body retrieval error. The reason for this is most probably that the message is malformed.") .
+ '</td></tr>' .
+ '<tr><td><b>' . _("Command:") . "</td><td>$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('', $data);
}
function mime_print_body_lines ($imap_stream, $id, $ent_id=1, $encoding) {
- global $uid_support;
- $sid = sqimap_session_id($uid_support);
/* Don't kill the connection if the browser is over a dialup
- * and it would take over 30 seconds to download it.
- * Don´t call set_time_limit in safe mode.
- */
+ * and it would take over 30 seconds to download it.
+ * 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','php://stdout',true);
} else {
- $sid_s = $sid;
- }
-
$body = mime_fetch_body ($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");
return;
} else {
echo decodeBody($read1, $encoding) .
- decodeBody($read, $encoding);
+ decodeBody($read, $encoding);
}
} else if ($cnt) {
echo decodeBody($read, $encoding);
/* -[ END MIME DECODING ]----------------------------------------------------------- */
/* This is here for debugging purposes. It will print out a list
- * of all the entity IDs that are in the $message object.
- */
+* of all the entity IDs that are in the $message object.
+*/
function listEntities ($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[$i]);
}
/* translateText
- * Extracted from strings.php 23/03/2002
- */
+* Extracted from strings.php 23/03/2002
+*/
function translateText(&$body, $wrap_at, $charset) {
global $where, $what; /* from searching */
for ($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 $body. That string can then
- * be displayed as the actual message in the HTML. It contains
- * everything needed, including HTML Tags, Attachments at the
- * bottom, etc.
- */
-function formatBody($imap_stream, $message, $color, $wrap_at, $ent_num, $id, $mailbox='INBOX') {
+/**
+* This returns a parsed string called $body. That string can then
+* be displayed as the actual message in the HTML. It contains
+* everything needed, including HTML Tags, Attachments at the
+* bottom, etc.
+* @param clean Do not output stuff that's irrelevant for the printable version.
+*/
+function formatBody($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 $languages, $squirrelmail_language;
+ * primary message. To add more of them, just put them in the
+ * order that is their priority.
+ */
+ global $startMessage, $languages, $squirrelmail_language,
+ $show_html_default, $sort, $has_unsafe_images, $passed_ent_id;
if( !sqgetGlobalVar('view_unsafe_images', $view_unsafe_images, SQ_GET) ) {
$view_unsafe_images = false;
$body = decodeBody($body, $body_message->header->encoding);
if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
- function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) {
if (mb_detect_encoding($body) != 'ASCII') {
- $body = $languages[$squirrelmail_language]['XTRA_CODE']('decode', $body);
+ $body = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode',$body);
}
}
$hookResults = do_hook("message_body", $body);
$body = $hookResults[1];
/* If there are other types that shouldn't be formatted, add
- * them here.
- */
+ * them here.
+ */
if ($body_message->header->type1 == 'html') {
if ($show_html_default <> 1) {
$entity_conv = array(' ' => ' ',
- '<p>' => "\n",
- '<br>' => "\n",
- '<P>' => "\n",
- '<BR>' => "\n",
- '>' => '>',
- '<' => '<');
+ '<p>' => "\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'));
} else {
$body = magicHTML($body, $id, $message, $mailbox);
}
} else {
translateText($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 $body;
}
function formatAttachments($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);
$type0 = strtolower($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");
+ $links['download link']['href'] = SM_PATH .
+ "src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&ent_id=$ent";
if ($type0 =='message' && $type1 == 'rfc822') {
- $default_page = '../src/read_body.php';
+ $default_page = SM_PATH . '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 = SM_PATH . '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.
- */
+ * 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 $show_html_default;
$body = str_replace("\r\n", "\n", $body);
$encoding = strtolower($encoding);
- if ($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);
return $body;
}
-/*
- * This functions decode strings that is encoded according to
- * RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text).
- * Patched by Christian Schmidt <christian@ostenfeld.dk> 23/03/2002
- */
-function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
- global $languages, $squirrelmail_language;
+/**
+* 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,$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] .= $res[1];
- //echo "$chunk 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);
+ 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;
+ }
break;
case 'Q':
$replace = str_replace('_', ' ', $res[4]);
- $replace = preg_replace('/=([0-9a-f]{2})/ie', 'chr(hexdec("\1"))',
+ $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) {
+ 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);
}
}
- $aString[$i] .= $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;
}
- 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 as quoted-printable
+*
+* 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.
+*
+* @param string $string header string, that has to be encoded
+* @return string quoted-printable encoded string
+*/
function encodeHeader ($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', $string);
- }
- if (strtolower($default_charset) == 'iso-8859-1') {
- $string = str_replace("\240",' ',$string);
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader')) {
+ return call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader', $string);
}
// Encode only if the string contains 8-bit characters or =?
}
$cur_l+=3;
if ($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 = $i;
case '(':
case ')':
if ($iEncStart !== false) {
- $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
$aRet[] = "=?$default_charset?Q?$ret?=";
$iOffset = $i;
$cur_l = 0;
if ($iEncStart !== false) {
$cur_l++;
if ($cur_l > $max_l) {
- $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
$aRet[] = "=?$default_charset?Q?$ret?=";
$iOffset = $i;
$cur_l = 0;
$ret = '';
$iEncStart = false;
- } else {
+ } else {
$ret .= '_';
}
}
$k = ord($string{$i});
if ($k > 126) {
if ($iEncStart === false) {
- $iEncStart = $i;
+ // 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 > ($max_l-2)) {
- if ($iEncStart !== false) {
- $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
- $aRet[] = "=?$default_charset?Q?$ret?=";
- } else {
- $aRet[] = substr($string,$iOffset,$i-$iOffset);
- }
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = "=?$default_charset?Q?$ret?= "; /* the next part is also encoded => separate by space */
$cur_l = 3;
$ret = '';
$iOffset = $i;
+ $iEncStart = $i;
}
- $enc_init = true;
+ $enc_init = true;
$ret .= sprintf("=%02X", $k);
} else {
if ($iEncStart !== false) {
$cur_l++;
if ($cur_l > $max_l) {
- $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
$aRet[] = "=?$default_charset?Q?$ret?=";
$iEncStart = false;
$iOffset = $i;
$cur_l = 0;
$ret = '';
- } else {
+ } else {
$ret .= $string{$i};
}
}
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
- */
+** HTMLFILTER ROUTINES
+*/
+
+/**
+* This function is more or less a wrapper around stripslashes. Apparently
+* Explorer is stupid enough to just remove the backslashes and then
+* execute the content of the attribute as if nothing happened.
+* Who does that?
+*
+* @param attvalue The value of the attribute
+* @return attvalue The value of the attribute stripslashed.
+*/
+function sq_unbackslash($attvalue){
+ /**
+ * Remove any backslashes. See if there are any first.
+ */
+
+ if (strstr($attvalue, '\\') !== false){
+ $attvalue = stripslashes($attvalue);
+ }
+ return $attvalue;
+}
+
+/**
+* Kill any tabs, newlines, or carriage returns. Our friends the
+* makers of the browser with 95% market value decided that it'd
+* be funny to make "java[tab]script" be just as good as "javascript".
+*
+* @param attvalue The attribute value before extraneous spaces removed.
+* @return attvalue The attribute value after extraneous spaces removed.
+*/
+function sq_unspace($attvalue){
+ if (strcspn($attvalue, "\t\r\n") != strlen($attvalue)){
+ $attvalue = str_replace(Array("\t", "\r", "\n"), Array('', '', ''),
+ $attvalue);
+ }
+ return $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
- * sq_sanitize internally.
- *
- * @param $tagname the name of the tag.
- * @param $attary the array of attributes and their values
- * @param $tagtype The type of the tag (see in comments).
- * @return a string with the final tag representation.
- */
+* 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
+* sq_sanitize internally.
+*
+* @param $tagname the name of the tag.
+* @param $attary the array of attributes and their values
+* @param $tagtype The type of the tag (see in comments).
+* @return a string with the final tag representation.
+*/
function sq_tagprint($tagname, $attary, $tagtype){
$me = 'sq_tagprint';
}
/**
- * A small helper function to use with array_walk. Modifies a by-ref
- * value and makes it lowercase.
- *
- * @param $val a value passed by-ref.
- * @return void since it modifies a by-ref value.
- */
+* A small helper function to use with array_walk. Modifies a by-ref
+* value and makes it lowercase.
+*
+* @param $val a value passed by-ref.
+* @return void since it modifies a by-ref value.
+*/
function sq_casenormalize(&$val){
$val = strtolower($val);
}
/**
- * 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.
- * @return the location within the $body where the next
- * non-whitespace char is located.
- */
+* 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.
+* @return the location within the $body where the next
+* non-whitespace char is located.
+*/
function sq_skipspace($body, $offset){
$me = 'sq_skipspace';
preg_match('/^(\s*)/s', substr($body, $offset), $matches);
}
/**
- * This function looks for the next character within a string. It's
- * really just a glorified "strpos", except it catches if failures
- * nicely.
- *
- * @param $body The string to look for needle in.
- * @param $offset Start looking from this position.
- * @param $needle The character/string to look for.
- * @return location of the next occurance of the needle, or
- * strlen($body) if needle wasn't found.
- */
+* This function looks for the next character within a string. It's
+* really just a glorified "strpos", except it catches if failures
+* nicely.
+*
+* @param $body The string to look for needle in.
+* @param $offset Start looking from this position.
+* @param $needle The character/string to look for.
+* @return location of the next occurance of the needle, or
+* strlen($body) if needle wasn't found.
+*/
function sq_findnxstr($body, $offset, $needle){
$me = 'sq_findnxstr';
$pos = strpos($body, $needle, $offset);
}
/**
- * This function takes a PCRE-style regexp and tries to match it
- * within the string.
- *
- * @param $body The string to look for needle in.
- * @param $offset Start looking from here.
- * @param $reg A PCRE-style regex to match.
- * @return Returns a false if no matches found, or an array
- * with the following members:
- * - integer with the location of the match within $body
- * - string with whatever content between offset and the match
- * - string with whatever it is we matched
- */
+* This function takes a PCRE-style regexp and tries to match it
+* within the string.
+*
+* @param $body The string to look for needle in.
+* @param $offset Start looking from here.
+* @param $reg A PCRE-style regex to match.
+* @return Returns a false if no matches found, or an array
+* with the following members:
+* - integer with the location of the match within $body
+* - string with whatever content between offset and the match
+* - string with whatever it is we matched
+*/
function sq_findnxreg($body, $offset, $reg){
$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});
}
/**
- * This function looks for the next tag.
- *
- * @param $body String where to look for the next tag.
- * @param $offset Start looking from here.
- * @return false if no more tags exist in the body, or
- * an array with the following members:
- * - string with the name of the tag
- * - array with attributes and their values
- * - integer with tag type (1, 2, or 3)
- * - integer where the tag starts (starting "<")
- * - integer where the tag ends (ending ">")
- * first three members will be false, if the tag is invalid.
- */
+* This function looks for the next tag.
+*
+* @param $body String where to look for the next tag.
+* @param $offset Start looking from here.
+* @return false if no more tags exist in the body, or
+* an array with the following members:
+* - string with the name of the tag
+* - array with attributes and their values
+* - integer with tag type (1, 2, or 3)
+* - integer where the tag starts (starting "<")
+* - integer where the tag ends (ending ">")
+* first three members will be false, if the tag is invalid.
+*/
function sq_getnxtag($body, $offset){
$me = 'sq_getnxtag';
if ($offset > strlen($body)){
return false;
}
/**
- * We are here:
- * blah blah <tag attribute="value">
- * \---------^
- */
+ * We are here:
+ * blah blah <tag attribute="value">
+ * \---------^
+ */
$pos = sq_skipspace($body, $lt+1);
if ($pos >= strlen($body)){
return Array(false, false, false, $lt, strlen($body));
}
/**
- * There are 3 kinds of tags:
- * 1. Opening tag, e.g.:
- * 2. Closing tag, e.g.:
- * </a>
- * 3. XHTML-style content-less tag, e.g.:
- * <img src="blah"/>
- */
+ * There are 3 kinds of tags:
+ * 1. Opening tag, e.g.:
+ * <a href="blah">
+ * 2. Closing tag, e.g.:
+ * </a>
+ * 3. XHTML-style content-less tag, e.g.:
+ * <img src="blah" />
+ */
$tagtype = false;
switch (substr($body, $pos, 1)){
case '/':
break;
case '!':
/**
- * A comment or an SGML declaration.
- */
+ * A comment or an SGML declaration.
+ */
if (substr($body, $pos+1, 2) == "--"){
$gt = strpos($body, "-->", $pos);
if ($gt === false){
break;
default:
/**
- * Assume tagtype 1 for now. If it's type 3, we'll switch values
- * later.
- */
+ * Assume tagtype 1 for now. If it's type 3, we'll switch values
+ * later.
+ */
$tagtype = 1;
break;
}
- $tag_start = $pos;
$tagname = '';
/**
- * Look for next [\W-_], which will indicate the end of the tag name.
- */
+ * Look for next [\W-_], which will indicate the end of the tag name.
+ */
$regary = sq_findnxreg($body, $pos, "[^\w\-_]");
if ($regary == false){
return Array(false, false, false, $lt, strlen($body));
$tagname = strtolower($tagname);
/**
- * $match can be either of these:
- * '>' 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.
- */
+ * $match can be either of these:
+ * '>' indicating the end of the tag entirely.
+ * '\s' indicating the end of the tag name.
+ * '/' indicating that this is type-3 xhtml tag.
+ *
+ * Whatever else we find there indicates an invalid tag.
+ */
switch ($match){
case '/':
/**
- * This is an xhtml-style tag with a closing / at the
- * end, like so: <img src="blah"/>. Check if it's followed
- * by the closing bracket. If not, then this tag is invalid
- */
+ * This is an xhtml-style tag with a closing / at the
+ * 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) == "/>"){
$pos++;
$tagtype = 3;
break;
default:
/**
- * Check if it's whitespace
- */
+ * Check if it's whitespace
+ */
if (!preg_match('/\s/', $match)){
/**
- * This is an invalid tag! Look for the next closing ">".
- */
- $gt = sq_findnxstr($body, $offset, ">");
+ * This is an invalid tag! Look for the next closing ">".
+ */
+ $gt = sq_findnxstr($body, $lt, ">");
return Array(false, false, false, $lt, $gt);
}
break;
}
/**
- * At this point we're here:
- * <tagname attribute='blah'>
- * \-------^
- *
- * At this point we loop in order to find all attributes.
- */
+ * At this point we're here:
+ * <tagname attribute='blah'>
+ * \-------^
+ *
+ * At this point we loop in order to find all attributes.
+ */
$attname = '';
- $atttype = false;
$attary = Array();
while ($pos <= strlen($body)){
$pos = sq_skipspace($body, $pos);
if ($pos == strlen($body)){
/**
- * Non-closed tag.
- */
+ * Non-closed tag.
+ */
return Array(false, false, false, $lt, $pos);
}
/**
- * See if we arrived at a ">" or "/>", which means that we reached
- * the end of the tag.
- */
+ * See if we arrived at a ">" or "/>", which means that we reached
+ * the end of the tag.
+ */
$matches = Array();
if (preg_match("%^(\s*)(>|/>)%s", substr($body, $pos), $matches)) {
/**
- * Yep. So we did.
- */
+ * Yep. So we did.
+ */
$pos += strlen($matches{1});
if ($matches{2} == "/>"){
$tagtype = 3;
}
/**
- * There are several types of attributes, with optional
- * [:space:] between members.
- * Type 1:
- * attrname[:space:]=[:space:]'CDATA'
- * Type 2:
- * attrname[:space:]=[:space:]"CDATA"
- * Type 3:
- * attr[:space:]=[:space:]CDATA
- * Type 4:
- * attrname
- *
- * We leave types 1 and 2 the same, type 3 we check for
- * '"' and convert to """ if needed, then wrap in
- * double quotes. Type 4 we convert into:
- * attrname="yes".
- */
- $regary = sq_findnxreg($body, $pos, "[^\w\-_]");
+ * There are several types of attributes, with optional
+ * [:space:] between members.
+ * Type 1:
+ * attrname[:space:]=[:space:]'CDATA'
+ * Type 2:
+ * attrname[:space:]=[:space:]"CDATA"
+ * Type 3:
+ * attr[:space:]=[:space:]CDATA
+ * Type 4:
+ * attrname
+ *
+ * We leave types 1 and 2 the same, type 3 we check for
+ * '"' and convert to """ if needed, then wrap in
+ * double quotes. Type 4 we convert into:
+ * attrname="yes".
+ */
+ $regary = sq_findnxreg($body, $pos, "[^:\w\-_]");
if ($regary == false){
/**
- * Looks like body ended before the end of tag.
- */
+ * Looks like body ended before the end of tag.
+ */
return Array(false, false, false, $lt, strlen($body));
}
list($pos, $attname, $match) = $regary;
$attname = strtolower($attname);
/**
- * We arrived at the end of attribute name. Several things possible
- * here:
- * '>' means the end of the tag and this is attribute type 4
- * '/' if followed by '>' means the same thing as above
- * '\s' means a lot of things -- look what it's followed by.
- * anything else means the attribute is invalid.
- */
+ * We arrived at the end of attribute name. Several things possible
+ * here:
+ * '>' means the end of the tag and this is attribute type 4
+ * '/' if followed by '>' means the same thing as above
+ * '\s' means a lot of things -- look what it's followed by.
+ * anything else means the attribute is invalid.
+ */
switch($match){
case '/':
/**
- * This is an xhtml-style tag with a closing / at the
- * end, like so: <img src="blah"/>. Check if it's followed
- * by the closing bracket. If not, then this tag is invalid
- */
+ * This is an xhtml-style tag with a closing / at the
+ * end, like so: <img src="blah" />. Check if it's followed
+ * by the closing bracket. If not, then this tag is invalid
+ */
if (substr($body, $pos, 2) == "/>"){
$pos++;
$tagtype = 3;
break;
default:
/**
- * Skip whitespace and see what we arrive at.
- */
+ * Skip whitespace and see what we arrive at.
+ */
$pos = sq_skipspace($body, $pos);
$char = substr($body, $pos, 1);
/**
- * Two things are valid here:
- * '=' means this is attribute type 1 2 or 3.
- * \w means this was attribute type 4.
- * anything else we ignore and re-loop. End of tag and
- * invalid stuff will be caught by our checks at the beginning
- * of the loop.
- */
+ * Two things are valid here:
+ * '=' means this is attribute type 1 2 or 3.
+ * \w means this was attribute type 4.
+ * anything else we ignore and re-loop. End of tag and
+ * invalid stuff will be caught by our checks at the beginning
+ * of the loop.
+ */
if ($char == "="){
$pos++;
$pos = sq_skipspace($body, $pos);
/**
- * Here are 3 possibilities:
- * "'" attribute type 1
- * '"' attribute type 2
- * everything else is the content of tag type 3
- */
+ * Here are 3 possibilities:
+ * "'" attribute type 1
+ * '"' attribute type 2
+ * everything else is the content of tag type 3
+ */
$quot = substr($body, $pos, 1);
if ($quot == "'"){
$regary = sq_findnxreg($body, $pos+1, "\'");
$attary{$attname} = '"' . $attval . '"';
} else {
/**
- * These are hateful. Look for \s, or >.
- */
+ * These are hateful. Look for \s, or >.
+ */
$regary = sq_findnxreg($body, $pos, "[\s>]");
if ($regary == false){
return Array(false, false, false, $lt, strlen($body));
}
list($pos, $attval, $match) = $regary;
/**
- * If it's ">" it will be caught at the top.
- */
+ * If it's ">" it will be caught at the top.
+ */
$attval = preg_replace("/\"/s", """, $attval);
$attary{$attname} = '"' . $attval . '"';
}
} else if (preg_match("|[\w/>]|", $char)) {
/**
- * That was attribute type 4.
- */
+ * That was attribute type 4.
+ */
$attary{$attname} = '"yes"';
} else {
/**
- * An illegal character. Find next '>' and return.
- */
+ * An illegal character. Find next '>' and return.
+ */
$gt = sq_findnxstr($body, $pos, ">");
return Array(false, false, false, $lt, $gt);
}
}
}
/**
- * The fact that we got here indicates that the tag end was never
- * found. Return invalid tag indication so it gets stripped.
- */
+ * The fact that we got here indicates that the tag end was never
+ * found. Return invalid tag indication so it gets stripped.
+ */
return Array(false, false, false, $lt, strlen($body));
}
/**
- * 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 Translated value.
- */
+* 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 $attvalue A string to run entity check against.
+* @return Translated value.
+*/
+
function sq_deent($attvalue){
$me = 'sq_deent';
/**
- * See if we have to run the checks first. All entities must start
- * with "&".
- */
- if (strpos($attvalue, "&") === false){
+ * See if we have to run the checks first. All entities must start
+ * with "&".
+ */
+ if (strpos($attvalue, '&') === false){
return $attvalue;
}
/**
- * Check named entities first.
- */
+ * Check named entities first.
+ */
$trans = get_html_translation_table(HTML_ENTITIES);
/**
- * Leave " in, as it can mess us up.
- */
+ * Leave " in, as it can mess us up.
+ */
$trans = array_flip($trans);
- unset($trans{"""});
+ unset($trans{'"'});
while (list($ent, $val) = each($trans)){
- $attvalue = preg_replace("/$ent*(\W)/si", "$val\\1", $attvalue);
+ $attvalue = preg_replace('/' . $ent . '*/si', $val, $attvalue);
}
/**
- * Now translate numbered entities from 1 to 255 if needed.
- */
- if (strpos($attvalue, "#") !== false){
+ * Now translate numbered entities from 1 to 255 if needed.
+ */
+ if (strpos($attvalue, '#') !== false){
$omit = Array(34, 39);
- for ($asc=1; $asc<256; $asc++){
+ for ($asc = 256; $asc >= 0; $asc--){
if (!in_array($asc, $omit)){
$chr = chr($asc);
- $attvalue = preg_replace("/\�*$asc;*(\D)/si", "$chr\\1",
- $attvalue);
- $attvalue = preg_replace("/\�*".dechex($asc).";*(\W)/si",
- "$chr\\1", $attvalue);
+ $octrule = '/\�*' . $asc . ';*/si';
+ $hexrule = '/\�*' . dechex($asc) . ';*/si';
+ $attvalue = preg_replace($octrule, $chr, $attvalue);
+ $attvalue = preg_replace($hexrule, $chr, $attvalue);
}
}
}
}
/**
- * This function runs various checks against the attributes.
- *
- * @param $tagname String with the name of the tag.
- * @param $attary Array with all tag attributes.
- * @param $rm_attnames See description for sq_sanitize
- * @param $bad_attvals See description for sq_sanitize
- * @param $add_attr_to_tag See description for sq_sanitize
- * @param $message message object
- * @param $id message id
- * @return Array with modified attributes.
- */
-function sq_fixatts($tagname,
- $attary,
+* This function runs various checks against the attributes.
+*
+* @param $tagname String with the name of the tag.
+* @param $attary Array with all tag attributes.
+* @param $rm_attnames See description for sq_sanitize
+* @param $bad_attvals See description for sq_sanitize
+* @param $add_attr_to_tag See description for sq_sanitize
+* @param $message message object
+* @param $id message id
+* @return Array with modified attributes.
+*/
+function sq_fixatts($tagname,
+ $attary,
$rm_attnames,
$bad_attvals,
$add_attr_to_tag,
$me = 'sq_fixatts';
while (list($attname, $attvalue) = each($attary)){
/**
- * See if this attribute should be removed.
- */
+ * See if this attribute should be removed.
+ */
foreach ($rm_attnames as $matchtag=>$matchattrs){
if (preg_match($matchtag, $tagname)){
foreach ($matchattrs as $matchattr){
}
}
/**
- * Remove any entities.
- */
+ * Remove any backslashes, entities, and extraneous whitespace.
+ */
+ $attvalue = sq_unbackslash($attvalue);
$attvalue = sq_deent($attvalue);
+ $attvalue = sq_unspace($attvalue);
/**
- * Now let's run checks on the attvalues.
- * I don't expect anyone to comprehend this. If you do,
- * get in touch with me so I can drive to where you live and
- * shake your hand personally. :)
- */
+ * Remove \r \n \t \0 " " "\\"
+ */
+ $attvalue = str_replace(Array("\r", "\n", "\t", "\0", " ", "\\"),
+ Array('', '','','','',''), $attvalue);
+
+ /**
+ * Now let's run checks on the attvalues.
+ * I don't expect anyone to comprehend this. If you do,
+ * get in touch with me so I can drive to where you live and
+ * shake your hand personally. :)
+ */
foreach ($bad_attvals as $matchtag=>$matchattrs){
if (preg_match($matchtag, $tagname)){
foreach ($matchattrs as $matchattr=>$valary){
if (preg_match($matchattr, $attname)){
/**
- * There are two arrays in valary.
- * First is matches.
- * Second one is replacements
- */
+ * There are two arrays in valary.
+ * First is matches.
+ * Second one is replacements
+ */
list($valmatch, $valrepl) = $valary;
- $newvalue =
+ $newvalue =
preg_replace($valmatch, $valrepl, $attvalue);
if ($newvalue != $attvalue){
$attary{$attname} = $newvalue;
}
}
}
+
+
/**
- * Turn cid: urls into http-friendly ones.
+ * Replace empty src tags with the blank image. src is only used
+ * for frames, images, and image inputs. Doing a replace should
+ * not affect them working as should be, however it will stop
+ * IE from being kicked off when src for img tags are not set
*/
+ if (($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, $mailbox);
+ }
+
}
/**
- * See if we need to append any attributes to this tag.
- */
+ * See if we need to append any attributes to this tag.
+ */
foreach ($add_attr_to_tag as $matchtag=>$addattary){
if (preg_match($matchtag, $tagname)){
$attary = array_merge($attary, $addattary);
}
/**
- * This function edits the style definition to make them friendly and
- * usable in squirrelmail.
- *
- * @param $message the message object
- * @param $id the message id
- * @param $content a string with whatever is between <style> and </style>
- * @return a string with edited content.
- */
-function sq_fixstyle($message, $id, $content){
+* This function edits the style definition to make them friendly and
+* 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 $mailbox the message mailbox
+* @return a string with edited content.
+*/
+function sq_fixstyle($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",
+ * Fix url('blah') declarations.
+ */
+ $content = preg_replace("|url\s*\(\s*([\'\"])\s*\S+script\s*:.*?([\'\"])\s*\)|si",
"url(\\1$secremoveimg\\2)", $content);
/**
- * Fix url('https*://.*) declarations but only if $view_unsafe_images
- * is false.
- */
+ * Fix url('https*://.*) declarations but only if $view_unsafe_images
+ * is false.
+ */
if (!$view_unsafe_images){
- $content = preg_replace("|url\(([\'\"])\s*https*:.*?([\'\"])\)|si",
+ $content = preg_replace("|url\s*\(\s*([\'\"])\s*https*:.*?([\'\"])\s*\)|si",
"url(\\1$secremoveimg\\2)", $content);
}
-
+
/**
- * Fix urls that refer to cid:
- */
- while (preg_match("|url\(([\'\"]\s*cid:.*?[\'\"])\)|si", $content,
- $matches)){
+ * Fix urls that refer to cid:
+ */
+ while (preg_match("|url\s*\(\s*([\'\"]\s*cid:.*?[\'\"])\s*\)|si",
+ $content, $matches)){
$cidurl = $matches{1};
- $httpurl = sq_cid2http($message, $id, $cidurl);
- $content = preg_replace("|url\($cidurl\)|si",
+ $httpurl = sq_cid2http($message, $id, $cidurl, $mailbox);
+ $content = preg_replace("|url\s*\(\s*$cidurl\s*\)|si",
"url($httpurl)", $content);
}
/**
- * Fix stupid css declarations which lead to vulnerabilities
- * in IE.
- */
- $match = Array('/expression/si',
- '/behaviou*r/si',
- '/binding/si');
- $replace = Array('idiocy', 'idiocy', 'idiocy');
+ * Fix stupid css declarations which lead to vulnerabilities
+ * in IE.
+ */
+ $match = Array('/expression/i',
+ '/behaviou*r/i',
+ '/binding/i',
+ '/include-source/i');
+ $replace = Array('idiocy', 'idiocy', 'idiocy', 'idiocy');
$content = preg_replace($match, $replace, $content);
- return $content;
+ return array($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.
- * @return a string with a http-friendly url
- */
+* 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.
- */
+ * 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);
$linkurl = find_ent_id($cidurl, $message);
/* in case of non-save cid links $httpurl should be replaced by a sort of
- unsave link image */
+ unsave link image */
$httpurl = '';
- if ($linkurl) {
- $httpurl = $quotchar . '../src/download.php?absolute_dl=true&' .
+
+ /**
+ * This is part of a fix for Outlook Express 6.x generating
+ * cid URLs without creating content-id headers. These images are
+ * not part of the multipart/related html mail. The html contains
+ * <img src="cid:{some_id}/image_filename.ext"> references to
+ * attached images with as goal to render them inline although
+ * the attachment disposition property is not inline.
+ **/
+
+ if (empty($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';
}
+
return $httpurl;
}
/**
- * This function changes the <body> tag into a <div> tag since we
- * can't really have a body-within-body.
- *
- * @param $attary an array of attributes and values of <body>
- * @return a modified array of attributes to be set for <div>
- */
-function sq_body2div($attary){
+* 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>
+* @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, $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\"";
}
}
/**
- * This is the main function and the one you should actually be calling.
- * There are several variables you should be aware of an which need
- * special description.
- *
- * Since the description is quite lengthy, see it here:
- * http://www.mricon.com/html/phpfilter.html
- *
- * @param $body the string with HTML you wish to filter
- * @param $tag_list see description above
- * @param $rm_tags_with_content see description above
- * @param $self_closing_tags see description above
- * @param $force_tag_closing see description above
- * @param $rm_attnames see description above
- * @param $bad_attvals see description above
- * @param $add_attr_to_tag see description above
- * @param $message message object
- * @param $id message id
- * @return sanitized html safe to show on your pages.
- */
-function sq_sanitize($body,
- $tag_list,
- $rm_tags_with_content,
- $self_closing_tags,
- $force_tag_closing,
- $rm_attnames,
- $bad_attvals,
- $add_attr_to_tag,
- $message,
- $id,
- $mailbox
- ){
+* This is the main function and the one you should actually be calling.
+* There are several variables you should be aware of an which need
+* special description.
+*
+* Since the description is quite lengthy, see it here:
+* http://linux.duke.edu/projects/mini/htmlfilter/
+*
+* @param $body the string with HTML you wish to filter
+* @param $tag_list see description above
+* @param $rm_tags_with_content see description above
+* @param $self_closing_tags see description above
+* @param $force_tag_closing see description above
+* @param $rm_attnames see description above
+* @param $bad_attvals see description above
+* @param $add_attr_to_tag see description above
+* @param $message message object
+* @param $id message id
+* @return sanitized html safe to show on your pages.
+*/
+function sq_sanitize($body,
+ $tag_list,
+ $rm_tags_with_content,
+ $self_closing_tags,
+ $force_tag_closing,
+ $rm_attnames,
+ $bad_attvals,
+ $add_attr_to_tag,
+ $message,
+ $id,
+ $mailbox
+ ){
$me = 'sq_sanitize';
+ $rm_tags = array_shift($tag_list);
/**
- * Normalize rm_tags and rm_tags_with_content.
- */
- @array_walk($rm_tags, 'sq_casenormalize');
+ * Normalize rm_tags and rm_tags_with_content.
+ */
+ @array_walk($tag_list, 'sq_casenormalize');
@array_walk($rm_tags_with_content, 'sq_casenormalize');
@array_walk($self_closing_tags, 'sq_casenormalize');
/**
- * See if tag_list is of tags to remove or tags to allow.
- * false means remove these tags
- * true means allow these tags
- */
- $rm_tags = array_shift($tag_list);
+ * See if tag_list is of tags to remove or tags to allow.
+ * false means remove these tags
+ * true means allow these tags
+ */
$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
- * &{alert('boo')};
- */
+ * Take care of netscape's stupid javascript entities like
+ * &{alert('boo')};
+ */
$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, $free_content);
+ * Take care of <style>
+ */
+ if ($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 .= $free_content;
if ($tagtype == 2){
if ($skip_content == $tagname){
/**
- * Got to the end of tag we needed to remove.
- */
+ * Got to the end of tag we needed to remove.
+ */
$tagname = false;
$skip_content = false;
} else {
if ($skip_content == false){
if ($tagname == "body"){
$tagname = "div";
+ }
+ if (isset($open_tags{$tagname}) &&
+ $open_tags{$tagname} > 0){
+ $open_tags{$tagname}--;
} else {
- if (isset($open_tags{$tagname}) &&
- $open_tags{$tagname} > 0){
- $open_tags{$tagname}--;
- } else {
- $tagname = false;
- }
+ $tagname = false;
}
}
}
} else {
/**
- * $rm_tags_with_content
- */
+ * $rm_tags_with_content
+ */
if ($skip_content == false){
/**
- * See if this is a self-closing type and change
- * tagtype appropriately.
- */
+ * See if this is a self-closing type and change
+ * tagtype appropriately.
+ */
if ($tagtype == 1
&& in_array($tagname, $self_closing_tags)){
- $tagtype=3;
+ $tagtype = 3;
}
/**
- * See if we should skip this tag and any content
- * inside it.
- */
+ * See if we should skip this tag and any content
+ * inside it.
+ */
if ($tagtype == 1 &&
in_array($tagname, $rm_tags_with_content)){
$skip_content = $tagname;
} else {
- if (($rm_tags == false
- && in_array($tagname, $tag_list)) ||
+ if (($rm_tags == false
+ && in_array($tagname, $tag_list)) ||
($rm_tags == true &&
- !in_array($tagname, $tag_list))){
+ !in_array($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}++;
}
}
/**
- * This is where we run other checks.
- */
+ * This is where we run other checks.
+ */
if (is_array($attary) && sizeof($attary) > 0){
$attary = sq_fixatts($tagname,
- $attary,
- $rm_attnames,
- $bad_attvals,
- $add_attr_to_tag,
- $message,
- $id,
- $mailbox
- );
- }
- /**
- * Convert body into div.
- */
- if ($tagname == "body"){
- $tagname = "div";
- $attary = sq_body2div($attary, $message, $id);
+ $attary,
+ $rm_attnames,
+ $bad_attvals,
+ $add_attr_to_tag,
+ $message,
+ $id,
+ $mailbox
+ );
}
}
}
}
/**
- * This is a wrapper function to call html sanitizing routines.
- *
- * @param $body the body of the message
- * @param $id the id of the message
- * @return a string with html safe to display in the browser.
- */
+* This is a wrapper function to call html sanitizing routines.
+*
+* @param $body the body of the message
+* @param $id the id of the message
+* @return a string with html safe to display in the browser.
+*/
function magicHTML($body, $id, $message, $mailbox = 'INBOX') {
+
+ require_once(SM_PATH . 'functions/url_parser.php'); // for $MailTo_PReg_Match
+
global $attachment_common_show_images, $view_unsafe_images,
- $has_unsafe_images;
+ $has_unsafe_images;
+
/**
- * Don't display attached images in HTML mode.
- */
+ * Don't display attached images in HTML mode.
+ */
$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",
+ "xml"
+ );
$self_closing_tags = Array(
"img",
"br",
"hr",
- "input"
+ "input",
+ "outbind"
);
- $force_tag_closing = false;
+ $force_tag_closing = true;
$rm_attnames = Array(
- "/.*/" =>
- Array(
- "/target/i",
- "/^on.*/i",
- "/^dynsrc/i",
- "/^data.*/i",
- "/^lowsrc.*/i"
- )
- );
+ "/.*/" =>
+ Array(
+ "/target/i",
+ "/^on.*/i",
+ "/^dynsrc/i",
+ "/^data.*/i",
+ "/^lowsrc.*/i"
+ )
+ );
$secremoveimg = "../images/" . _("sec_remove_eng.png");
$bad_attvals = Array(
Array(
"/^src|background/i" =>
Array(
- Array(
- "|^([\'\"])\s*\.\./.*([\'\"])|i",
- "/^([\'\"])\s*\S+script\s*:.*([\'\"])/i",
- "/^([\'\"])\s*mocha\s*:*.*([\'\"])/i",
- "/^([\'\"])\s*about\s*:.*([\'\"])/i"
+ Array(
+ "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si",
+ "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si",
+ "/^([\'\"])\s*about\s*:.*([\'\"])/si"
),
- Array(
+ Array(
"\\1$secremoveimg\\2",
"\\1$secremoveimg\\2",
"\\1$secremoveimg\\2",
),
"/^href|action/i" =>
Array(
- Array(
- "|^([\'\"])\s*\.\./.*([\'\"])|i",
- "/^([\'\"])\s*\S+script\s*:.*([\'\"])/i",
- "/^([\'\"])\s*mocha\s*:*.*([\'\"])/i",
- "/^([\'\"])\s*about\s*:.*([\'\"])/i"
+ Array(
+ "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si",
+ "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si",
+ "/^([\'\"])\s*about\s*:.*([\'\"])/si"
),
- Array(
- "\\1#\\2",
- "\\1#\\2",
- "\\1#\\2",
- "\\1#\\2"
+ Array(
+ "\\1#\\1",
+ "\\1#\\1",
+ "\\1#\\1",
+ "\\1#\\1"
)
),
- "/^style/si" =>
+ "/^style/i" =>
Array(
- Array(
- "/expression/si",
- "/binding/si",
- "/behaviou*r/si",
- "|url\(([\'\"])\s*\.\./.*([\'\"])\)|i",
- "/url\(([\'\"])\s*\S+script\s*:.*([\'\"])\)/i",
- "/url\(([\'\"])\s*mocha\s*:.*([\'\"])\)/i",
- "/url\(([\'\"])\s*about\s*:.*([\'\"])\)/i"
- ),
- Array(
+ Array(
+ "/expression/i",
+ "/binding/i",
+ "/behaviou*r/i",
+ "/include-source/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",
- "url(\\1#\\2)",
- "url(\\1#\\2)",
- "url(\\1#\\2)",
- "url(\\1#\\2)"
- )
- )
+ "idiocy",
+ "url(\\1#\\1)",
+ "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($bad_attvals{'/.*/'}{'/^src|background/i'}[0],
- '/^([\'\"])\s*https*:.*([\'\"])/i');
- array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[1],
- "\\1$secremoveimg\\2");
- array_push($bad_attvals{'/.*/'}{'/^style/i'}[0],
+ * 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$secremoveimg\\1");
+ array_push($bad_attvals{'/.*/'}{'/^style/i'}[0],
'/url\(([\'\"])\s*https*:.*([\'\"])\)/si');
- array_push($bad_attvals{'/.*/'}{'/^style/i'}[1],
- "url(\\1$secremoveimg\\2)");
+ 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,
- $rm_tags_with_content,
- $self_closing_tags,
- $force_tag_closing,
- $rm_attnames,
- $bad_attvals,
- $add_attr_to_tag,
- $message,
- $id,
- $mailbox
- );
- if (preg_match("|$secremoveimg|si", $trusted)){
+ "/^a$/i" =>
+ Array('target'=>'"_new"',
+ '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,
+ $rm_attnames,
+ $bad_attvals,
+ $add_attr_to_tag,
+ $message,
+ $id,
+ $mailbox
+ );
+ if (preg_match("|$secremoveimg|i", $trusted)){
$has_unsafe_images = true;
- }
+ }
+
+
+ // we want to parse mailto's in HTML output, change to SM compose links
+ // this is a modified version of code from url_parser.php... but Marc is
+ // right: we need a better filtering implementation; adding this randomly
+ // here is not a great solution
+ //
+ // parseUrl($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
+
?>
projects / squirrelmail.git / blobdiff