You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
613 lines
14 KiB
PHP
613 lines
14 KiB
PHP
<?php
|
|
|
|
/*
|
|
+-----------------------------------------------------------------------+
|
|
| rcube_shared.inc |
|
|
| |
|
|
| This file is part of the RoundCube PHP suite |
|
|
| Copyright (C) 2005-2007, RoundCube Dev. - Switzerland |
|
|
| Licensed under the GNU GPL |
|
|
| |
|
|
| CONTENTS: |
|
|
| Shared functions and classes used in PHP projects |
|
|
| |
|
|
+-----------------------------------------------------------------------+
|
|
| Author: Thomas Bruederli <roundcube@gmail.com> |
|
|
+-----------------------------------------------------------------------+
|
|
|
|
$Id$
|
|
|
|
*/
|
|
|
|
|
|
/**
|
|
* RoundCube shared functions
|
|
*
|
|
* @package Core
|
|
*/
|
|
|
|
|
|
/**
|
|
* Provide details about the client's browser
|
|
*
|
|
* @return array Key-value pairs of browser properties
|
|
*/
|
|
function rcube_browser()
|
|
{
|
|
$HTTP_USER_AGENT = $_SERVER['HTTP_USER_AGENT'];
|
|
|
|
$bw['ver'] = 0;
|
|
$bw['win'] = stristr($HTTP_USER_AGENT, 'win');
|
|
$bw['mac'] = stristr($HTTP_USER_AGENT, 'mac');
|
|
$bw['linux'] = stristr($HTTP_USER_AGENT, 'linux');
|
|
$bw['unix'] = stristr($HTTP_USER_AGENT, 'unix');
|
|
|
|
$bw['ns4'] = stristr($HTTP_USER_AGENT, 'mozilla/4') && !stristr($HTTP_USER_AGENT, 'msie');
|
|
$bw['ns'] = ($bw['ns4'] || stristr($HTTP_USER_AGENT, 'netscape'));
|
|
$bw['ie'] = stristr($HTTP_USER_AGENT, 'msie');
|
|
$bw['mz'] = stristr($HTTP_USER_AGENT, 'mozilla/5');
|
|
$bw['opera'] = stristr($HTTP_USER_AGENT, 'opera');
|
|
$bw['safari'] = stristr($HTTP_USER_AGENT, 'safari');
|
|
|
|
if($bw['ns'])
|
|
{
|
|
$test = eregi("mozilla\/([0-9\.]+)", $HTTP_USER_AGENT, $regs);
|
|
$bw['ver'] = $test ? (float)$regs[1] : 0;
|
|
}
|
|
if($bw['mz'])
|
|
{
|
|
$test = ereg("rv:([0-9\.]+)", $HTTP_USER_AGENT, $regs);
|
|
$bw['ver'] = $test ? (float)$regs[1] : 0;
|
|
}
|
|
if($bw['ie'])
|
|
{
|
|
$test = eregi("msie ([0-9\.]+)", $HTTP_USER_AGENT, $regs);
|
|
$bw['ver'] = $test ? (float)$regs[1] : 0;
|
|
}
|
|
if($bw['opera'])
|
|
{
|
|
$test = eregi("opera ([0-9\.]+)", $HTTP_USER_AGENT, $regs);
|
|
$bw['ver'] = $test ? (float)$regs[1] : 0;
|
|
}
|
|
|
|
if(eregi(" ([a-z]{2})-([a-z]{2})", $HTTP_USER_AGENT, $regs))
|
|
$bw['lang'] = $regs[1];
|
|
else
|
|
$bw['lang'] = 'en';
|
|
|
|
$bw['dom'] = ($bw['mz'] || $bw['safari'] || ($bw['ie'] && $bw['ver']>=5) || ($bw['opera'] && $bw['ver']>=7));
|
|
$bw['pngalpha'] = $bw['mz'] || $bw['safari'] || ($bw['ie'] && $bw['ver']>=5.5) ||
|
|
($bw['ie'] && $bw['ver']>=5 && $bw['mac']) || ($bw['opera'] && $bw['ver']>=7) ? TRUE : FALSE;
|
|
|
|
return $bw;
|
|
}
|
|
|
|
|
|
/**
|
|
* Send HTTP headers to prevent caching this page
|
|
*/
|
|
function send_nocacheing_headers()
|
|
{
|
|
if (headers_sent())
|
|
return;
|
|
|
|
header("Expires: ".gmdate("D, d M Y H:i:s")." GMT");
|
|
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
|
|
header("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
|
|
header("Pragma: no-cache");
|
|
}
|
|
|
|
|
|
/**
|
|
* Send header with expire date 30 days in future
|
|
*
|
|
* @param int Expiration time in seconds
|
|
*/
|
|
function send_future_expire_header($offset=2600000)
|
|
{
|
|
if (headers_sent())
|
|
return;
|
|
|
|
header("Expires: ".gmdate("D, d M Y H:i:s", mktime()+$offset)." GMT");
|
|
header("Cache-Control: max-age=$offset");
|
|
header("Pragma: ");
|
|
}
|
|
|
|
|
|
/**
|
|
* Check request for If-Modified-Since and send an according response.
|
|
* This will terminate the current script if headers match the given values
|
|
*
|
|
* @param int Modified date as unix timestamp
|
|
* @param string Etag value for caching
|
|
*/
|
|
function send_modified_header($mdate, $etag=null, $skip_check=false)
|
|
{
|
|
if (headers_sent())
|
|
return;
|
|
|
|
$iscached = false;
|
|
$etag = $etag ? "\"$etag\"" : null;
|
|
|
|
if (!$skip_check)
|
|
{
|
|
if ($_SERVER['HTTP_IF_MODIFIED_SINCE'] && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $mdate)
|
|
$iscached = true;
|
|
|
|
if ($etag)
|
|
$iscached = ($_SERVER['HTTP_IF_NONE_MATCH'] == $etag);
|
|
}
|
|
|
|
if ($iscached)
|
|
header("HTTP/1.x 304 Not Modified");
|
|
else
|
|
header("Last-Modified: ".gmdate("D, d M Y H:i:s", $mdate)." GMT");
|
|
|
|
header("Cache-Control: max-age=0");
|
|
header("Expires: ");
|
|
header("Pragma: ");
|
|
|
|
if ($etag)
|
|
header("Etag: $etag");
|
|
|
|
if ($iscached)
|
|
{
|
|
ob_end_clean();
|
|
exit;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Convert a variable into a javascript object notation
|
|
*
|
|
* @param mixed Input value
|
|
* @return string Serialized JSON string
|
|
*/
|
|
function json_serialize($var)
|
|
{
|
|
if (is_object($var))
|
|
$var = get_object_vars($var);
|
|
|
|
if (is_array($var))
|
|
{
|
|
// empty array
|
|
if (!sizeof($var))
|
|
return '[]';
|
|
else
|
|
{
|
|
$keys_arr = array_keys($var);
|
|
$is_assoc = $have_numeric = 0;
|
|
|
|
for ($i=0; $i<sizeof($keys_arr); ++$i)
|
|
{
|
|
if (is_numeric($keys_arr[$i]))
|
|
$have_numeric = 1;
|
|
if (!is_numeric($keys_arr[$i]) || $keys_arr[$i] != $i)
|
|
$is_assoc = 1;
|
|
if ($is_assoc && $have_numeric)
|
|
break;
|
|
}
|
|
|
|
$brackets = $is_assoc ? '{}' : '[]';
|
|
$pairs = array();
|
|
|
|
foreach ($var as $key => $value)
|
|
{
|
|
// enclose key with quotes if it is not variable-name conform
|
|
if (!ereg("^[_a-zA-Z]{1}[_a-zA-Z0-9]*$", $key) /* || is_js_reserved_word($key) */)
|
|
$key = "'$key'";
|
|
|
|
$pairs[] = sprintf("%s%s", $is_assoc ? "$key:" : '', json_serialize($value));
|
|
}
|
|
|
|
return $brackets{0} . implode(',', $pairs) . $brackets{1};
|
|
}
|
|
}
|
|
else if (is_numeric($var) && strval(intval($var)) === strval($var))
|
|
return $var;
|
|
else if (is_bool($var))
|
|
return $var ? '1' : '0';
|
|
else
|
|
return "'".JQ($var)."'";
|
|
|
|
}
|
|
|
|
/**
|
|
* Function to convert an array to a javascript array
|
|
* Actually an alias function for json_serialize()
|
|
* @deprecated
|
|
*/
|
|
function array2js($arr, $type='')
|
|
{
|
|
return json_serialize($arr);
|
|
}
|
|
|
|
|
|
/**
|
|
* Similar function as in_array() but case-insensitive
|
|
*
|
|
* @param mixed Needle value
|
|
* @param array Array to search in
|
|
* @return boolean True if found, False if not
|
|
*/
|
|
function in_array_nocase($needle, $haystack)
|
|
{
|
|
foreach ($haystack as $value)
|
|
if (strtolower($needle)===strtolower($value))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* Find out if the string content means TRUE or FALSE
|
|
*
|
|
* @param string Input value
|
|
* @return boolean Imagine what!
|
|
*/
|
|
function get_boolean($str)
|
|
{
|
|
$str = strtolower($str);
|
|
if(in_array($str, array('false', '0', 'no', 'nein', ''), TRUE))
|
|
return FALSE;
|
|
else
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/**
|
|
* Parse a human readable string for a number of bytes
|
|
*
|
|
* @param string Input string
|
|
* @return int Number of bytes
|
|
*/
|
|
function parse_bytes($str)
|
|
{
|
|
if (is_numeric($str))
|
|
return intval($str);
|
|
|
|
if (preg_match('/([0-9]+)([a-z])/i', $str, $regs))
|
|
{
|
|
$bytes = floatval($regs[1]);
|
|
switch (strtolower($regs[2]))
|
|
{
|
|
case 'g':
|
|
$bytes *= 1073741824;
|
|
break;
|
|
case 'm':
|
|
$bytes *= 1048576;
|
|
break;
|
|
case 'k':
|
|
$bytes *= 1024;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return intval($bytes);
|
|
}
|
|
|
|
/**
|
|
* Create a human readable string for a number of bytes
|
|
*
|
|
* @param int Number of bytes
|
|
* @return string Byte string
|
|
*/
|
|
function show_bytes($bytes)
|
|
{
|
|
if ($bytes > 1073741824)
|
|
{
|
|
$gb = $bytes/1073741824;
|
|
$str = sprintf($gb>=10 ? "%d GB" : "%.1f GB", $gb);
|
|
}
|
|
else if ($bytes > 1048576)
|
|
{
|
|
$mb = $bytes/1048576;
|
|
$str = sprintf($mb>=10 ? "%d MB" : "%.1f MB", $mb);
|
|
}
|
|
else if ($bytes > 1024)
|
|
$str = sprintf("%d KB", round($bytes/1024));
|
|
else
|
|
$str = sprintf('%d B', $bytes);
|
|
|
|
return $str;
|
|
}
|
|
|
|
|
|
/**
|
|
* Convert paths like ../xxx to an absolute path using a base url
|
|
*
|
|
* @param string Relative path
|
|
* @param string Base URL
|
|
* @return string Absolute URL
|
|
*/
|
|
function make_absolute_url($path, $base_url)
|
|
{
|
|
$host_url = $base_url;
|
|
$abs_path = $path;
|
|
|
|
// check if path is an absolute URL
|
|
if (preg_match('/^[fhtps]+:\/\//', $path))
|
|
return $path;
|
|
|
|
// cut base_url to the last directory
|
|
if (strpos($base_url, '/')>7)
|
|
{
|
|
$host_url = substr($base_url, 0, strpos($base_url, '/'));
|
|
$base_url = substr($base_url, 0, strrpos($base_url, '/'));
|
|
}
|
|
|
|
// $path is absolute
|
|
if ($path{0}=='/')
|
|
$abs_path = $host_url.$path;
|
|
else
|
|
{
|
|
// strip './' because its the same as ''
|
|
$path = preg_replace('/^\.\//', '', $path);
|
|
|
|
if (preg_match_all('/\.\.\//', $path, $matches, PREG_SET_ORDER))
|
|
foreach ($matches as $a_match)
|
|
{
|
|
if (strrpos($base_url, '/'))
|
|
$base_url = substr($base_url, 0, strrpos($base_url, '/'));
|
|
|
|
$path = substr($path, 3);
|
|
}
|
|
|
|
$abs_path = $base_url.'/'.$path;
|
|
}
|
|
|
|
return $abs_path;
|
|
}
|
|
|
|
|
|
/**
|
|
* Wrapper function for strlen
|
|
*/
|
|
function rc_strlen($str)
|
|
{
|
|
if (function_exists('mb_strlen'))
|
|
return mb_strlen($str);
|
|
else
|
|
return strlen($str);
|
|
}
|
|
|
|
/**
|
|
* Wrapper function for strtolower
|
|
*/
|
|
function rc_strtolower($str)
|
|
{
|
|
if (function_exists('mb_strtolower'))
|
|
return mb_strtolower($str);
|
|
else
|
|
return strtolower($str);
|
|
}
|
|
|
|
/**
|
|
* Wrapper function for substr
|
|
*/
|
|
function rc_substr($str, $start, $len=null)
|
|
{
|
|
if (function_exists('mb_substr'))
|
|
return mb_substr($str, $start, $len);
|
|
else
|
|
return substr($str, $start, $len);
|
|
}
|
|
|
|
/**
|
|
* Wrapper function for strpos
|
|
*/
|
|
function rc_strpos($haystack, $needle, $offset=0)
|
|
{
|
|
if (function_exists('mb_strpos'))
|
|
return mb_strpos($haystack, $needle, $offset);
|
|
else
|
|
return strpos($haystack, $needle, $offset);
|
|
}
|
|
|
|
/**
|
|
* Wrapper function for strrpos
|
|
*/
|
|
function rc_strrpos($haystack, $needle, $offset=0)
|
|
{
|
|
if (function_exists('mb_strrpos'))
|
|
return mb_strrpos($haystack, $needle, $offset);
|
|
else
|
|
return strrpos($haystack, $needle, $offset);
|
|
}
|
|
|
|
|
|
/**
|
|
* Read a specific HTTP request header
|
|
*
|
|
* @access static
|
|
* @param string $name Header name
|
|
* @return mixed Header value or null if not available
|
|
*/
|
|
function rc_request_header($name)
|
|
{
|
|
if (function_exists('getallheaders'))
|
|
{
|
|
$hdrs = array_change_key_case(getallheaders(), CASE_UPPER);
|
|
$key = strtoupper($name);
|
|
}
|
|
else
|
|
{
|
|
$key = 'HTTP_' . strtoupper(strtr($name, '-', '_'));
|
|
$hdrs = array_change_key_case($_SERVER, CASE_UPPER);
|
|
}
|
|
|
|
return $hdrs[$key];
|
|
}
|
|
|
|
|
|
/**
|
|
* Replace the middle part of a string with ...
|
|
* if it is longer than the allowed length
|
|
*
|
|
* @param string Input string
|
|
* @param int Max. length
|
|
* @param string Replace removed chars with this
|
|
* @return string Abbreviated string
|
|
*/
|
|
function abbreviate_string($str, $maxlength, $place_holder='...')
|
|
{
|
|
$length = rc_strlen($str);
|
|
$first_part_length = floor($maxlength/2) - rc_strlen($place_holder);
|
|
|
|
if ($length > $maxlength)
|
|
{
|
|
$second_starting_location = $length - $maxlength + $first_part_length + 1;
|
|
$str = rc_substr($str, 0, $first_part_length) . $place_holder . rc_substr($str, $second_starting_location, $length);
|
|
}
|
|
|
|
return $str;
|
|
}
|
|
|
|
|
|
/**
|
|
* Make sure the string ends with a slash
|
|
*/
|
|
function slashify($str)
|
|
{
|
|
return unslashify($str).'/';
|
|
}
|
|
|
|
|
|
/**
|
|
* Remove slash at the end of the string
|
|
*/
|
|
function unslashify($str)
|
|
{
|
|
return preg_replace('/\/$/', '', $str);
|
|
}
|
|
|
|
|
|
/**
|
|
* Delete all files within a folder
|
|
*
|
|
* @param string Path to directory
|
|
* @return boolean True on success, False if directory was not found
|
|
*/
|
|
function clear_directory($dir_path)
|
|
{
|
|
$dir = @opendir($dir_path);
|
|
if(!$dir) return FALSE;
|
|
|
|
while ($file = readdir($dir))
|
|
if (strlen($file)>2)
|
|
unlink("$dir_path/$file");
|
|
|
|
closedir($dir);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/**
|
|
* Create a unix timestamp with a specified offset from now
|
|
*
|
|
* @param string String representation of the offset (e.g. 20min, 5h, 2days)
|
|
* @param int Factor to multiply with the offset
|
|
* @return int Unix timestamp
|
|
*/
|
|
function get_offset_time($offset_str, $factor=1)
|
|
{
|
|
if (preg_match('/^([0-9]+)\s*([smhdw])/i', $offset_str, $regs))
|
|
{
|
|
$amount = (int)$regs[1];
|
|
$unit = strtolower($regs[2]);
|
|
}
|
|
else
|
|
{
|
|
$amount = (int)$offset_str;
|
|
$unit = 's';
|
|
}
|
|
|
|
$ts = mktime();
|
|
switch ($unit)
|
|
{
|
|
case 'w':
|
|
$amount *= 7;
|
|
case 'd':
|
|
$amount *= 24;
|
|
case 'h':
|
|
$amount *= 60;
|
|
case 'm':
|
|
$amount *= 60;
|
|
case 's':
|
|
$ts += $amount * $factor;
|
|
}
|
|
|
|
return $ts;
|
|
}
|
|
|
|
|
|
/**
|
|
* A method to guess the mime_type of an attachment.
|
|
*
|
|
* @param string $path Path to the file.
|
|
* @param string $failover Mime type supplied for failover.
|
|
*
|
|
* @return string
|
|
* @author Till Klampaeckel <till@php.net>
|
|
* @see http://de2.php.net/manual/en/ref.fileinfo.php
|
|
* @see http://de2.php.net/mime_content_type
|
|
*/
|
|
function rc_mime_content_type($path, $failover = 'unknown/unknown')
|
|
{
|
|
$mime_type = null;
|
|
$mime_magic = rcmail::get_instance()->config->get('mime_magic');
|
|
|
|
if (!extension_loaded('fileinfo')) {
|
|
@dl('fileinfo.' . PHP_SHLIB_SUFFIX);
|
|
}
|
|
|
|
if (function_exists('finfo_open')) {
|
|
if ($finfo = finfo_open(FILEINFO_MIME, $mime_magic)) {
|
|
$mime_type = finfo_file($finfo, $path);
|
|
finfo_close($finfo);
|
|
}
|
|
}
|
|
else if (function_exists('mime_content_type')) {
|
|
$mime_type = mime_content_type($path);
|
|
}
|
|
|
|
if (!$mime_type) {
|
|
$mime_type = $failover;
|
|
}
|
|
|
|
return $mime_type;
|
|
}
|
|
|
|
|
|
/**
|
|
* A method to guess encoding of a string.
|
|
*
|
|
* @param string $string String.
|
|
* @param string $failover Default result for failover.
|
|
*
|
|
* @return string
|
|
*/
|
|
function rc_detect_encoding($string, $failover='')
|
|
{
|
|
if (!function_exists('mb_detect_encoding')) {
|
|
return $failover;
|
|
}
|
|
|
|
// FIXME: the order is important, because sometimes
|
|
// iso string is detected as euc-jp and etc.
|
|
$enc = array(
|
|
'UTF-8', 'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3', 'ISO-8859-4',
|
|
'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8', 'ISO-8859-9',
|
|
'ISO-8859-10', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 'ISO-8859-16',
|
|
'WINDOWS-1252', 'WINDOWS-1251', 'EUC-JP', 'EUC-TW', 'KOI8-R'
|
|
);
|
|
|
|
$result = mb_detect_encoding($string, join(',', $enc));
|
|
|
|
return $result ? $result : $failover;
|
|
}
|
|
|
|
?>
|