' . _("Download this as a file") . '';
if ($view_unsafe_images) {
$text = _("Hide Unsafe Images");
@@ -526,7 +526,7 @@ function formatAttachments($message, $exclude_id, $mailbox, $id) {
''.decodeHeader($display_filename).' ' .
'' . show_readable_size($header->size) .
' | ' .
- "[ $type0/$type1 ] | " .
+ '[ '.htmlspecialchars($type0).'/'.htmlspecialchars($type1).' ] | ' .
'';
$attachments .= '' . $description . '';
$attachments .= ' | ';
@@ -550,10 +550,30 @@ function formatAttachments($message, $exclude_id, $mailbox, $id) {
}
function sqimap_base64_decode(&$string) {
- $string = str_replace("\r\n", "\n", $string);
+
+ // base64 enoded 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 $show_html_default;
@@ -585,13 +605,21 @@ function decodeBody($body, $encoding) {
return $body;
}
-/*
+/**
+ * Decodes headers
+ *
* This functions decode strings that is encoded according to
* RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text).
* Patched by Christian Schmidt 23/03/2002
+ *
+ * @param string $string header string that has to be made readable
+ * @param boolean $utfencode change message in order to be readable on user's charset. defaults to true
+ * @param boolean $htmlsave preserve spaces and sanitize html special characters. defaults to true
+ * @param boolean $decide decide if string can be utfencoded. defaults to false
+ * @return string decoded header string
*/
-function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
- global $languages, $squirrelmail_language;
+function decodeHeader ($string, $utfencode=true,$htmlsave=true,$decide=false) {
+ global $languages, $squirrelmail_language,$default_charset;
if (is_array($string)) {
$string = implode("\n", $string);
}
@@ -623,7 +651,7 @@ function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
/* if the last chunk isn't an encoded string then put back the space, otherwise don't */
if ($iLastMatch !== $j) {
if ($htmlsave) {
- $ret .= ' ';
+ $ret .= ' ';
} else {
$ret .= ' ';
}
@@ -632,21 +660,42 @@ function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
$j = $i;
$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]);
- $ret .= charset_decode($res[2],$replace);
+ if ($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);
+ }
break;
case 'Q':
$replace = str_replace('_', ' ', $res[4]);
$replace = preg_replace('/=([0-9a-f]{2})/ie', 'chr(hexdec("\1"))',
$replace);
- /* Only encode into entities by default. Some places
- * don't need the encoding, like the compose form.
- */
if ($utfencode) {
+ 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);
@@ -662,7 +711,7 @@ function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
}
if (!$encoded) {
if ($htmlsave) {
- $ret .= ' ';
+ $ret .= ' ';
} else {
$ret .= ' ';
}
@@ -678,7 +727,7 @@ function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
/* remove the first added space */
if ($ret) {
if ($htmlsave) {
- $ret = substr($ret,6);
+ $ret = substr($ret,5);
} else {
$ret = substr($ret,1);
}
@@ -687,10 +736,15 @@ function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
return $ret;
}
-/*
+/**
+ * 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, $squirrelmail_language;
@@ -699,9 +753,6 @@ function encodeHeader ($string) {
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);
- }
// Encode only if the string contains 8-bit characters or =?
$j = strlen($string);
@@ -1373,6 +1424,12 @@ function sq_fixatts($tagname,
$attvalue = sq_deent($attvalue);
$attvalue = sq_unspace($attvalue);
+ /**
+ * Remove \r \n \t \0 " " "\\"
+ */
+ $attvalue = str_replace(Array("\r", "\n", "\t", "\0", " ", "\\"),
+ Array('', '','','','',''), $attvalue);
+
/**
* Now let's run checks on the attvalues.
* I don't expect anyone to comprehend this. If you do,
@@ -1836,7 +1893,8 @@ function magicHTML($body, $id, $message, $mailbox = 'INBOX') {
"/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"
+ "/url\s*\(\s*([\'\"])\s*about\s*:.*([\'\"])\s*\)/si",
+ "/(.*)\s*:\s*url\s*\(\s*([\'\"]*)\s*\S+script\s*:.*([\'\"]*)\s*\)/si"
),
Array(
"idiocy",
@@ -1846,7 +1904,8 @@ function magicHTML($body, $id, $message, $mailbox = 'INBOX') {
"url(\\1#\\1)",
"url(\\1#\\1)",
"url(\\1#\\1)",
- "url(\\1#\\1)"
+ "url(\\1#\\1)",
+ "\\1:url(\\2#\\3)"
)
)
)
@@ -1904,7 +1963,7 @@ function magicHTML($body, $id, $message, $mailbox = 'INBOX') {
* @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 integer $filesize optional, send the Content-Header and length to the browser
+ * @param optional integer $filesize send the Content-Header and length to the browser
* @return void
*/
function SendDownloadHeaders($type0, $type1, $filename, $force, $filesize=0) {
@@ -1926,54 +1985,78 @@ function magicHTML($body, $id, $message, $mailbox = 'INBOX') {
if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
$filename =
- $languages[$squirrelmail_language]['XTRA_CODE']('downloadfilename', $filename, $HTTP_USER_AGENT);
+ $languages[$squirrelmail_language]['XTRA_CODE']('downloadfilename', $filename, $HTTP_USER_AGENT);
} else {
- $filename = ereg_replace('[\\/:\*\?"<>\|;]', '_', str_replace(' ', ' ', $filename));
+ $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) {
+ 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=$filename");
}
- // A Pox on Microsoft and it's Office!
if (!$force) {
// Try to show in browser window
- header("Content-Disposition: inline; filename=\"$filename\"");
- header("Content-Type: $type0/$type1; name=\"$filename\"");
+ header ("Content-Disposition: inline; filename=\"$filename\"");
+ header ("Content-Type: $type0/$type1; name=\"$filename\"");
} else {
// Try to pop up the "save as" box
+
// IE makes this hard. It pops up 2 save boxes, or none.
// http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP
- // But, accordint to Microsoft, it is "RFC compliant but doesn't
+ // http://support.microsoft.com/default.aspx?scid=kb;EN-US;260519
+ // But, according to Microsoft, it is "RFC compliant but doesn't
// take into account some deviations that allowed within the
// specification." Doesn't that mean RFC non-compliant?
// http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP
- //
- // The best thing you can do for IE is to upgrade to the latest
- // version
+
+ // all browsers need the application/octet-stream header for this
+ header ("Content-Type: application/octet-stream; name=\"$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 && !$isIE6) {
- // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp
- // Do not have quotes around filename, but that applied to
- // "attachment"... does it apply to inline too?
- //
// This combination seems to work mostly. IE 5.5 SP 1 has
// known issues (see the Microsoft Knowledge Base)
- header("Content-Disposition: inline; filename=$filename");
+
// This works for most types, but doesn't work with Word files
- header("Content-Type: application/download; name=\"$filename\"");
+ header ("Content-Type: application/download; name=\"$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=\"$filename\"");
} else {
- header("Content-Disposition: attachment; filename=\"$filename\"");
- // application/octet-stream forces download for Netscape
- header("Content-Type: application/octet-stream; name=\"$filename\"");
+ // another application/octet-stream forces download for Netscape
+ header ("Content-Type: application/octet-stream; name=\"$filename\"");
}
}
//send the content-length header if the calling function provides it
if ($filesize > 0) {
- header("Content-Length: $filesize");
+ header("Content-Length: $filesize");
}
- } // end fn SendDownlaodHeaders
+} // end fn SendDownloadHeaders
?>
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