<?php
/**
-* 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
-*/
+ * mime.php
+ *
+ * This contains the functions necessary to detect and decode MIME
+ * messages.
+ *
+ * @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 */
/* -------------------------------------------------------------------------- */
/**
-* 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.
-*/
+ * 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. */
/* 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 .= '<br />'._("The bodystructure provided by your IMAP server:").'<br /><br />';
$errormessage .= '<pre>' . htmlspecialchars($read) . '</pre>';
plain_error_message( $errormessage, $color );
echo '</body></html>';
/* 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()
-*/
+ * 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[]";
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, TRUE);
// }
$par .= '&startMessage=' . $startMessage . '&show_more=0';
}
$par .= '&response=' . urlencode($response) .
- '&message=' . urlencode($message) .
- '&topline=' . urlencode($topline);
+ '&message=' . urlencode($message) .
+ '&topline=' . urlencode($topline);
- echo '<tt><br />' .
+ 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.") .
return $ret;
}
-function mime_print_body_lines ($imap_stream, $id, $ent_id=1, $encoding) {
+function mime_print_body_lines ($imap_stream, $id, $ent_id=1, $encoding, $rStream='php://stdout') {
/* Don't kill the connection if the browser is over a dialup
- * and it would take over 30 seconds to download it.
- * Don't call set_time_limit in safe mode.
- */
+ * and it would take over 30 seconds to download it.
+ * Don't call set_time_limit in safe mode.
+ */
if (!ini_get('safe_mode')) {
set_time_limit(0);
}
/* in case of base64 encoded attachments, do not buffer them.
- Instead, echo the decoded attachment directly to screen */
+ Instead, echo the decoded attachment directly to screen */
if (strtolower($encoding) == 'base64') {
if (!$ent_id) {
- $query = "FETCH $id BODY[]";
+ $query = "FETCH $id BODY[]";
} else {
- $query = "FETCH $id BODY[$ent_id]";
+ $query = "FETCH $id BODY[$ent_id]";
}
- sqimap_run_command($imap_stream,$query,true,$response,$message,TRUE,'sqimap_base64_decode','php://stdout',true);
+ sqimap_run_command($imap_stream,$query,true,$response,$message,TRUE,'sqimap_base64_decode',$rStream,true);
} else {
- $body = mime_fetch_body ($imap_stream, $id, $ent_id);
- echo decodeBody($body, $encoding);
+ $body = mime_fetch_body ($imap_stream, $id, $ent_id);
+ if (is_resource($rStream)) {
+ fputs($rStream,decodeBody($body,$encoding));
+ } else {
+ echo decodeBody($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, 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 $results.
+ */
/*
- TODO 2: find out how we write to the output stream php://stdout. fwrite
- doesn't work because 'php://stdout isn't a stream.
- */
+ TODO 2: find out how we write to the output stream php://stdout. fwrite
+ doesn't work because 'php://stdout isn't a stream.
+ */
return;
-/*
- fputs ($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 ]----------------------------------------------------------- */
/* 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 = '. $message->parent->entity_id. '<br />';
}
/* translateText
-* Extracted from strings.php 23/03/2002
-*/
+ * Extracted from strings.php 23/03/2002
+ */
function translateText(&$body, $wrap_at, $charset) {
global $where, $what; /* from searching */
}
/**
-* 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.
-*/
+ * 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', $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.
- */
+ * 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;
+ $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[$squirrelmail_language]['XTRA_CODE'] . '_decode')) {
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) {
if (mb_detect_encoding($body) != 'ASCII') {
$body = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode',$body);
}
$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",
- '<P>' => "\n",
- '<br>' => "\n",
- '<BR>' => "\n",
- '<br />' => "\n",
- '<BR />' => "\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.
}
$link = 'passed_id=' . $id . '&ent_id='.$ent_num.
- '&mailbox=' . $urlmailbox .'&sort=' . $sort .
- '&startMessage=' . $startMessage . '&show_more=0';
+ '&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>';
+ $link . '">' . _("Download this as a file") . '</a>';
if ($view_unsafe_images) {
$text = _("Hide Unsafe Images");
} else {
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, $passed_ent_id;
$type1 = strtolower($header->type1);
$name = '';
$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";
+ $links['download link']['href'] = sqm_baseuri() .
+ "src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&ent_id=$ent";
if ($type0 =='message' && $type1 == 'rfc822') {
- $default_page = SM_PATH . 'src/read_body.php';
+ $default_page = sqm_baseuri() . 'src/read_body.php';
$rfc822_header = $att->rfc822_header;
$filename = $rfc822_header->subject;
if (trim( $filename ) == '') {
}
$description = $from_name;
} else {
- $default_page = SM_PATH . 'src/download.php';
+ $default_page = sqm_baseuri() . 'src/download.php';
$filename = $att->getFilename();
if ($header->description) {
$description = decodeHeader($header->description);
$passed_ent_id_link = '';
}
$defaultlink = $default_page . "?startMessage=$startMessage"
- . "&passed_id=$id&mailbox=$urlMailbox"
- . '&ent_id='.$ent.$passed_ent_id_link;
+ . "&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>[ '.htmlspecialchars($type0).'/'.htmlspecialchars($type1).' ] </small></td>' .
- '<td><small>';
+ '<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> ';
} 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";
$body = $encoding_handler('decode', $body);
} else if ($encoding == 'quoted-printable' ||
- $encoding == 'quoted_printable') {
+ $encoding == 'quoted_printable') {
$body = quoted_printable_decode($body);
while (ereg("=\n", $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
-*/
+ * 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($string)) {
}
if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
- function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decodeheader')) {
+ function_exists($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 $string;
/* decide about valid decoding */
if ($decide && is_conversion_safe($res[2])) {
- $utfencode=true;
- $can_be_encoded=true;
+ $utfencode=true;
+ $can_be_encoded=true;
} else {
- $can_be_encoded=false;
+ $can_be_encoded=false;
}
switch ($encoding)
{
- 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);
+ 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 {
- // convert string to html codes in order to display it
- $ret .= charset_decode($res[2],$replace);
- }
- } else {
- if ($htmlsave) {
- $replace = htmlspecialchars($replace);
+ if ($htmlsave) {
+ $replace = htmlspecialchars($replace);
+ }
+ $ret.= $replace;
}
- $ret.= $replace;
- }
- 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);
+ 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;
+ $ret .= $replace;
+ break;
+ default:
+ break;
}
$chunk = $res[5];
$encoded = true;
}
/**
-* 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
-*/
+ * 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[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader')) {
+ function_exists($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);
$max_l = 75 - strlen($default_charset) - 7;
for($i = 0; $i < $j; ++$i) {
switch($string{$i})
{
- case '=':
- case '<':
- case '>':
- case ',':
- case '?':
- case '_':
- if ($iEncStart === false) {
- $iEncStart = $i;
- }
- $cur_l+=3;
- if ($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 = '';
- $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 = '';
- $iEncStart = false;
- }
- break;
- case ' ':
- if ($iEncStart !== false) {
- $cur_l++;
- if ($cur_l > $max_l) {
+ case '=':
+ case '<':
+ case '>':
+ case ',':
+ case '?':
+ case '_':
+ if ($iEncStart === false) {
+ $iEncStart = $i;
+ }
+ $cur_l+=3;
+ if ($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;
$ret = '';
$iEncStart = false;
} else {
- $ret .= '_';
- }
- }
- break;
- default:
- $k = ord($string{$i});
- if ($k > 126) {
- 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);
+ $ret .= sprintf("=%02X",ord($string{$i}));
}
- $cur_l += 3;
- /* first we add the encoded string that reached it's max size */
- if ($cur_l > ($max_l-2)) {
+ break;
+ case '(':
+ case ')':
+ if ($iEncStart !== false) {
$aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
- $aRet[] = "=?$default_charset?Q?$ret?= "; /* the next part is also encoded => separate by space */
- $cur_l = 3;
- $ret = '';
+ $aRet[] = "=?$default_charset?Q?$ret?=";
$iOffset = $i;
- $iEncStart = $i;
+ $cur_l = 0;
+ $ret = '';
+ $iEncStart = false;
}
- $enc_init = true;
- $ret .= sprintf("=%02X", $k);
- } else {
+ break;
+ case ' ':
if ($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 = '';
+ $iEncStart = false;
} else {
- $ret .= $string{$i};
+ $ret .= '_';
}
}
- }
- break;
+ break;
+ default:
+ $k = ord($string{$i});
+ if ($k > 126) {
+ 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 = '';
+ $iOffset = $i;
+ $iEncStart = $i;
+ }
+ $enc_init = true;
+ $ret .= sprintf("=%02X", $k);
+ } else {
+ if ($iEncStart !== false) {
+ $cur_l++;
+ if ($cur_l > $max_l) {
+ $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset);
+ $aRet[] = "=?$default_charset?Q?$ret?=";
+ $iEncStart = false;
+ $iOffset = $i;
+ $cur_l = 0;
+ $ret = '';
+ } else {
+ $ret .= $string{$i};
+ }
+ }
+ }
+ break;
}
}
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;
+ return $message->entities[$i]->entity_id;
// }
} elseif (!empty($message->entities[$i]->header->parameters['name'])) {
/**
/**
-** 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){
+ * 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){
+ $me = 'sq_defang';
/**
- * Remove any backslashes. See if there are any first.
- */
-
- if (strstr($attvalue, '\\') !== false){
- $attvalue = stripslashes($attvalue);
+ * Skip this if there aren't ampersands or backslashes.
+ */
+ if (strpos($attvalue, '&') === false
+ && strpos($attvalue, '\\') === false){
+ return;
}
- return $attvalue;
+ $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 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('', '', ''),
- $attvalue);
+ * Kill any tabs, newlines, or carriage returns. Our friends the
+ * makers of the browser with 95% market value decided that it'd
+ * be funny to make "java[tab]script" be just as good as "javascript".
+ *
+ * @param attvalue The attribute value before extraneous spaces removed.
+ * @return attvalue Nothing, modifies a reference value.
+ */
+function sq_unspace(&$attvalue){
+ $me = 'sq_unspace';
+ if (strcspn($attvalue, "\t\r\n\0 ") != strlen($attvalue)){
+ $attvalue = str_replace(Array("\t", "\r", "\n", "\0", " "),
+ Array('', '', '', '', ''), $attvalue);
}
- 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();
}
/**
-* 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.:
- * <a href="blah">
- * 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.:
+ * 2. Closing tag, e.g.:
+ * </a>
+ * 3. XHTML-style content-less tag, e.g.:
+ */
$tagtype = false;
switch (substr($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 ">".
- */
+ * This is an invalid tag! Look for the next closing ">".
+ */
$gt = sq_findnxstr($body, $lt, ">");
return Array(false, false, false, $lt, $gt);
}
}
/**
- * 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".
- */
+ * 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 $attvalue A string to run entity check against.
-* @return Translated value.
-*/
-
-function sq_deent($attvalue){
+ * Translates entities into literal values so they can be checked.
+ *
+ * @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, $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 . '*/si', $val, $attvalue);
- }
- /**
- * Now translate numbered entities from 1 to 255 if needed.
- */
- if (strpos($attvalue, '#') !== false){
- $omit = Array(34, 39);
- for ($asc = 256; $asc >= 0; $asc--){
- if (!in_array($asc, $omit)){
- $chr = chr($asc);
- $octrule = '/\�*' . $asc . ';*/si';
- $hexrule = '/\�*' . dechex($asc) . ';*/si';
- $attvalue = preg_replace($octrule, $chr, $attvalue);
- $attvalue = preg_replace($hexrule, $chr, $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;
}
/**
-* 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.
-*/
+ * 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,
$me = 'sq_fixatts';
while (list($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 backslashes, entities, and extraneous whitespace.
- */
- $attvalue = sq_unbackslash($attvalue);
- $attvalue = sq_deent($attvalue);
- $attvalue = sq_unspace($attvalue);
-
- /**
- * Remove \r \n \t \0 " " "\\"
- */
- $attvalue = str_replace(Array("\r", "\n", "\t", "\0", " ", "\\"),
- Array('', '','','','',''), $attvalue);
+ * Remove any backslashes, entities, and extraneous whitespace.
+ */
+ sq_defang($attvalue);
+ sq_unspace($attvalue);
/**
- * Now let's run checks on the attvalues.
- * I don't expect anyone to comprehend this. If you do,
- * get in touch with me so I can drive to where you live and
- * shake your hand personally. :)
- */
+ * Now let's run checks on the attvalues.
+ * I don't expect anyone to comprehend this. If you do,
+ * get in touch with me so I can drive to where you live and
+ * shake your hand personally. :)
+ */
foreach ($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;
$newvalue =
preg_replace($valmatch, $valrepl, $attvalue);
}
}
-
/**
* Replace empty src tags with the blank image. src is only used
* for frames, images, and image inputs. Doing a replace should
}
/**
- * Turn cid: urls into http-friendly ones.
- */
+ * Turn cid: urls into http-friendly ones.
+ */
if (preg_match("/^[\'\"]\s*cid:/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>
-* @param $mailbox the message mailbox
-* @return a string with edited 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';
/**
* 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 $view_unsafe_images
- * is false.
- */
- if (!$view_unsafe_images){
- $content = preg_replace("|url\s*\(\s*([\'\"])\s*https*:.*?([\'\"])\s*\)|si",
- "url(\\1$secremoveimg\\2)", $content);
+ // $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);
- /**
- * Fix urls that refer to cid:
+ /**
+ * Remove any backslashes, entities, and extraneous whitespace.
*/
- while (preg_match("|url\s*\(\s*([\'\"]\s*cid:.*?[\'\"])\s*\)|si",
- $content, $matches)){
- $cidurl = $matches{1};
- $httpurl = sq_cid2http($message, $id, $cidurl, $mailbox);
- $content = preg_replace("|url\s*\(\s*$cidurl\s*\)|si",
- "url($httpurl)", $content);
- }
+ $contentTemp = $content;
+ sq_defang($contentTemp);
+ sq_unspace($contentTemp);
/**
- * Fix stupid css declarations which lead to vulnerabilities
- * in IE.
- */
+ * 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);
+ $contentNew = preg_replace($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
-*/
+ * 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);
if ($quotchar == '"' || $quotchar == "'"){
$cidurl = str_replace($quotchar, "", $cidurl);
$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 */
+ unsave link image */
$httpurl = '';
- /**
- * This is part of a fix for Outlook Express 6.x generating
- * cid URLs without creating content-id headers. These images are
- * not part of the multipart/related html mail. The html contains
- * <img src="cid:{some_id}/image_filename.ext"> references to
- * attached images with as goal to render them inline although
- * the attachment disposition property is not inline.
- **/
+ /**
+ * This is part of a fix for Outlook Express 6.x generating
+ * cid URLs without creating content-id headers. These images are
+ * not part of the multipart/related html mail. The html contains
+
* <img src="cid:{some_id}/image_filename.ext"> references to
+ * attached images with as goal to render them inline although
+ * the attachment disposition property is not inline.
+ */
if (empty($linkurl)) {
if (preg_match('/{.*}\//', $cidurl)) {
}
}
}
-
+
if (!empty($linkurl)) {
$httpurl = $quotchar . SM_PATH . 'src/download.php?absolute_dl=true&' .
- "passed_id=$id&mailbox=" . urlencode($mailbox) .
- '&ent_id=' . $linkurl . $quotchar;
+ "passed_id=$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 = $quotechar . SM_PATH . 'images/blank.png';
+ $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>
-* @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>
-*/
+
* 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'");
$attvalue = str_replace($quotchar, "", $attvalue);
switch ($attname){
case 'background':
- $attvalue = sq_cid2http($message, $id,
- $attvalue, $mailbox);
+ $attvalue = sq_cid2http($message, $id, $attvalue, $mailbox);
$styledef .= "background-image: url('$attvalue'); ";
break;
case 'bgcolor':
}
/**
-* 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.
-*/
+ * 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
- ){
+ $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.
- */
+ * 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
- */
+ * 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 = "\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, $curpos)) != FALSE){
list($tagname, $attary, $tagtype, $lt, $gt) = $curtag;
$free_content = substr($body, $curpos, $lt-$curpos);
/**
- * Take care of <style>
- */
+ * Take care of <style>
+ */
if ($tagname == "style" && $tagtype == 1){
list($free_content, $curpos) =
sq_fixstyle($body, $gt+1, $message, $id, $mailbox);
if ($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 {
$tagname = "div";
}
if (isset($open_tags{$tagname}) &&
- $open_tags{$tagname} > 0){
+ $open_tags{$tagname} > 0){
$open_tags{$tagname}--;
} else {
$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, $self_closing_tags)){
+ && in_array($tagname, $self_closing_tags)){
$tagtype = 3;
}
/**
- * See if we should skip this tag and any content
- * inside it.
- */
+ * See if we should skip this tag and any content
+ * inside it.
+ */
if ($tagtype == 1 &&
- in_array($tagname, $rm_tags_with_content)){
+ in_array($tagname, $rm_tags_with_content)){
$skip_content = $tagname;
} else {
if (($rm_tags == false
- && in_array($tagname, $tag_list)) ||
- ($rm_tags == true &&
- !in_array($tagname, $tag_list))){
+ && in_array($tagname, $tag_list)) ||
+ ($rm_tags == true &&
+ !in_array($tagname, $tag_list))){
$tagname = false;
} else {
/**
- * Convert body into div.
- */
+ * Convert body into div.
+ */
if ($tagname == "body"){
$tagname = "div";
$attary = sq_body2div($attary, $mailbox,
- $message, $id);
+ $message, $id);
}
if ($tagtype == 1){
if (isset($open_tags{$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
- );
+ $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 $id the id of the message
-* @return a string with html safe to display in the browser.
-*/
-function magicHTML($body, $id, $message, $mailbox = 'INBOX') {
+ * This is a wrapper function to call html sanitizing routines.
+ *
+ * @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', $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;
+ $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",
- "plaintext",
- "marquee"
- );
+ false,
+ "object",
+ "meta",
+ "html",
+ "head",
+ "base",
+ "link",
+ "frame",
+ "iframe",
+ "plaintext",
+ "marquee"
+ );
$rm_tags_with_content = Array(
- "script",
- "applet",
- "embed",
- "title",
- "frameset",
- "xml"
- );
+ "script",
+ "applet",
+ "embed",
+ "title",
+ "frameset",
+ "xmp",
+ "xml"
+ );
$self_closing_tags = Array(
- "img",
- "br",
- "hr",
- "input",
- "outbind"
- );
+ "img",
+ "br",
+ "hr",
+ "input",
+ "outbind"
+ );
$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");
$bad_attvals = Array(
- "/.*/" =>
+ "/.*/" =>
Array(
"/^src|background/i" =>
+ Array(
Array(
- Array(
- "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si",
- "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si",
- "/^([\'\"])\s*about\s*:.*([\'\"])/si"
- ),
- Array(
- "\\1$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*\S+script\s*:.*([\'\"])/si",
- "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si",
- "/^([\'\"])\s*about\s*:.*([\'\"])/si"
- ),
- Array(
- "\\1#\\1",
- "\\1#\\1",
- "\\1#\\1",
- "\\1#\\1"
- )
+ "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si",
+ "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si",
+ "/^([\'\"])\s*about\s*:.*([\'\"])/si"
),
- "/^style/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",
- "idiocy",
- "url(\\1#\\1)",
- "url(\\1#\\1)",
- "url(\\1#\\1)",
- "url(\\1#\\1)",
- "\\1:url(\\2#\\3)"
- )
+ "\\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) ) {
$view_unsafe_images = false;
}
if (!$view_unsafe_images){
/**
- * Remove any references to http/https if view_unsafe_images set
- * to false.
- */
+ * Remove any references to http/https if view_unsafe_images set
+ * to false.
+ */
array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[0],
- '/^([\'\"])\s*https*:.*([\'\"])/si');
+ '/^([\'\"])\s*https*:.*([\'\"])/si');
array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[1],
- "\\1$secremoveimg\\1");
+ "\\1$secremoveimg\\1");
array_push($bad_attvals{'/.*/'}{'/^style/i'}[0],
- '/url\(([\'\"])\s*https*:.*([\'\"])\)/si');
+ '/url\([\'\"]?https?:[^\)]*[\'\"]?\)/si');
array_push($bad_attvals{'/.*/'}{'/^style/i'}[1],
- "url(\\1$secremoveimg\\1)");
+ "url(\\1$secremoveimg\\1)");
}
$add_attr_to_tag = Array(
- "/^a$/i" =>
- Array('target'=>'"_new"',
+ "/^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,
- $rm_attnames,
- $bad_attvals,
- $add_attr_to_tag,
- $message,
- $id,
- $mailbox
- );
+ $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)){
$has_unsafe_images = true;
}
+
+ // we want to parse mailto's in HTML output, change to SM compose links
+ // this is a modified version of code from url_parser.php... but Marc is
+ // right: we need a better filtering implementation; adding this randomly
+ // here is not a great solution
+ //
+ if ($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 - 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($HTTP_USER_AGENT, 'Opera') === false) {
+ strstr($HTTP_USER_AGENT, 'Opera') === false) {
$isIE = 1;
}
if (strstr($HTTP_USER_AGENT, 'compatible; MSIE 6') !== false &&
- strstr($HTTP_USER_AGENT, 'Opera') === false) {
+ strstr($HTTP_USER_AGENT, 'Opera') === false) {
$isIE6 = 1;
}
if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
- function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename')) {
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename')) {
$filename =
- call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename', $filename, $HTTP_USER_AGENT);
+ call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename', $filename, $HTTP_USER_AGENT);
} else {
$filename = ereg_replace('[\\/:\*\?"<>\|;]', '_', str_replace(' ', ' ', $filename));
}
if ($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: 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");
+ 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");
} // end fn SendDownloadHeaders
-?>
+?>
\ No newline at end of file
projects / squirrelmail.git / blobdiff