From 38dc510b2dba02dba5a60fbc00947aac4fd24aab Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Wed, 29 Feb 2012 06:53:52 -0500
Subject: [PATCH] - Fix warning when properties array is empty

---
 program/include/rcube_shared.inc |  584 +++++++++++++++++++++++++--------------------------------
 1 files changed, 255 insertions(+), 329 deletions(-)

diff --git a/program/include/rcube_shared.inc b/program/include/rcube_shared.inc
index 74bfdba..9340091 100644
--- a/program/include/rcube_shared.inc
+++ b/program/include/rcube_shared.inc
@@ -4,9 +4,12 @@
  +-----------------------------------------------------------------------+
  | rcube_shared.inc                                                      |
  |                                                                       |
- | This file is part of the RoundCube PHP suite                          |
- | Copyright (C) 2005-2007, RoundCube Dev. - Switzerland                 |
- | Licensed under the GNU GPL                                            |
+ | This file is part of the Roundcube PHP suite                          |
+ | Copyright (C) 2005-2007, The Roundcube Dev Team                       |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
  |                                                                       |
  | CONTENTS:                                                             |
  |   Shared functions and classes used in PHP projects                   |
@@ -21,8 +24,8 @@
 
 
 /**
- * RoundCube shared functions
- * 
+ * Roundcube shared functions
+ *
  * @package Core
  */
 
@@ -32,18 +35,23 @@
  */
 function send_nocacheing_headers()
 {
+  global $OUTPUT;
+
   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: private, must-revalidate, post-check=0, pre-check=0");
-  header("Pragma: no-cache");
-  
+  // Request browser to disable DNS prefetching (CVE-2010-0464)
+  header("X-DNS-Prefetch-Control: off");
+
   // We need to set the following headers to make downloads work using IE in HTTPS mode.
-  if (isset($_SERVER['HTTPS'])) {
-    header('Pragma: ');
-    header('Cache-Control: ');
+  if ($OUTPUT->browser->ie && rcube_https_check()) {
+    header('Pragma: private');
+    header("Cache-Control: private, must-revalidate");
+  } else {
+    header("Cache-Control: private, no-cache, must-revalidate, post-check=0, pre-check=0");
+    header("Pragma: no-cache");
   }
 }
 
@@ -65,142 +73,6 @@
 
 
 /**
- * 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;
-    }
-}
-
-
-/**
- * Returns whether an $str is a reserved word for any of the version of Javascript or ECMAScript
- * @param str String to check
- * @return boolean True if $str is a reserver word, False if not
- */
-function is_js_reserved_word($str)
-{
-  return in_array($str, array(
-    // ECMASript ver 4 reserved words
-    'as','break','case','catch','class','const','continue',
-    'default','delete','do','else','export','extends','false','finally','for','function',
-    'if','import','in','instanceof','is','namespace','new','null','package','private',
-    'public','return','super','switch','this','throw','true','try','typeof','use','var',
-    'void','while','with',
-    // ECMAScript ver 4 future reserved words
-    'abstract','debugger','enum','goto','implements','interface','native','protected',
-    'synchronized','throws','transient','volatile',
-    // special meaning in some contexts
-    'get','set',
-    // were reserved in ECMAScript ver 3
-    'boolean','byte','char','double','final','float','int','long','short','static'
-  ));
-}
-
-
-/**
- * Convert a variable into a javascript object notation
- *
- * @param mixed Input value
- * @return string Serialized JSON string
- */
-function json_serialize($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) . $brackets{1};
-    }
-  }
-  else if (!is_string($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
@@ -209,11 +81,11 @@
  */
 function in_array_nocase($needle, $haystack)
 {
-  $needle = rc_strtolower($needle);
+  $needle = mb_strtolower($needle);
   foreach ($haystack as $value)
-    if ($needle===rc_strtolower($value))
+    if ($needle===mb_strtolower($value))
       return true;
-  
+
   return false;
 }
 
@@ -227,7 +99,7 @@
 function get_boolean($str)
 {
   $str = strtolower($str);
-  if(in_array($str, array('false', '0', 'no', 'nein', ''), TRUE))
+  if (in_array($str, array('false', '0', 'no', 'off', 'nein', ''), TRUE))
     return FALSE;
   else
     return TRUE;
@@ -238,33 +110,36 @@
  * Parse a human readable string for a number of bytes
  *
  * @param string Input string
- * @return int Number of bytes
+ * @return float Number of bytes
  */
 function parse_bytes($str)
 {
   if (is_numeric($str))
-    return intval($str);
-    
-  if (preg_match('/([0-9]+)([a-z])/i', $str, $regs))
+    return floatval($str);
+
+  if (preg_match('/([0-9\.]+)\s*([a-z]*)/i', $str, $regs))
   {
     $bytes = floatval($regs[1]);
     switch (strtolower($regs[2]))
     {
       case 'g':
+      case 'gb':
         $bytes *= 1073741824;
         break;
       case 'm':
+      case 'mb':
         $bytes *= 1048576;
         break;
       case 'k':
+      case 'kb':
         $bytes *= 1024;
         break;
     }
   }
 
-  return intval($bytes);
+  return floatval($bytes);
 }
-    
+
 /**
  * Create a human readable string for a number of bytes
  *
@@ -273,17 +148,17 @@
  */
 function show_bytes($bytes)
 {
-  if ($bytes > 1073741824)
+  if ($bytes >= 1073741824)
   {
     $gb = $bytes/1073741824;
     $str = sprintf($gb>=10 ? "%d " : "%.1f ", $gb) . rcube_label('GB');
   }
-  else if ($bytes > 1048576)
+  else if ($bytes >= 1048576)
   {
     $mb = $bytes/1048576;
     $str = sprintf($mb>=10 ? "%d " : "%.1f ", $mb) . rcube_label('MB');
   }
-  else if ($bytes > 1024)
+  else if ($bytes >= 1024)
     $str = sprintf("%d ",  round($bytes/1024)) . rcube_label('KB');
   else
     $str = sprintf('%d ', $bytes) . rcube_label('B');
@@ -291,120 +166,56 @@
   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
+ * Wrapper function for wordwrap
  */
-function make_absolute_url($path, $base_url)
+function rc_wordwrap($string, $width=75, $break="\n", $cut=false)
 {
-  $host_url = $base_url;
-  $abs_path = $path;
-  
-  // check if path is an absolute URL
-  if (preg_match('/^[fhtps]+:\/\//', $path))
-    return $path;
+  $para = explode($break, $string);
+  $string = '';
+  while (count($para)) {
+    $line = array_shift($para);
+    if ($line[0] == '>') {
+      $string .= $line.$break;
+      continue;
+    }
+    $list = explode(' ', $line);
+    $len = 0;
+    while (count($list)) {
+      $line = array_shift($list);
+      $l = mb_strlen($line);
+      $newlen = $len + $l + ($len ? 1 : 0);
 
-  // cut base_url to the last directory
-  if (strrpos($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);
+      if ($newlen <= $width) {
+        $string .= ($len ? ' ' : '').$line;
+        $len += (1 + $l);
+      } else {
+        if ($l > $width) {
+          if ($cut) {
+            $start = 0;
+            while ($l) {
+              $str = mb_substr($line, $start, $width);
+              $strlen = mb_strlen($str);
+              $string .= ($len ? $break : '').$str;
+              $start += $strlen;
+              $l -= $strlen;
+              $len = $strlen;
+            }
+          } else {
+                $string .= ($len ? $break : '').$line;
+            if (count($list)) $string .= $break;
+            $len = 0;
+          }
+        } else {
+          $string .= $break.$line;
+          $len = $l;
+        }
       }
-
-    $abs_path = $base_url.'/'.$path;
+    }
+    if (count($para)) $string .= $break;
   }
-    
-  return $abs_path;
+  return $string;
 }
-
-
-/**
- * Wrapper function for strlen
- */
-function rc_strlen($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($str);
-}
-
-/**
- * Wrapper function for strtoupper
- */
-function rc_strtoupper($str)
-{
-  if (function_exists('mb_strtoupper'))
-    return mb_strtoupper($str);
-  else
-    return strtoupper($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
@@ -427,30 +238,6 @@
   }
 
   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;
 }
 
 
@@ -470,7 +257,7 @@
 {
   return preg_replace('/\/$/', '', $str);
 }
-  
+
 
 /**
  * Delete all files within a folder
@@ -500,7 +287,7 @@
  * @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];
@@ -511,7 +298,7 @@
     $amount = (int)$offset_str;
     $unit = 's';
   }
-    
+
   $ts = mktime();
   switch ($unit)
   {
@@ -532,37 +319,84 @@
 
 
 /**
+ * Truncate string if it is longer than the allowed length
+ * Replace the middle or the ending part of a string with a placeholder
+ *
+ * @param string Input string
+ * @param int    Max. length
+ * @param string Replace removed chars with this
+ * @param bool   Set to True if string should be truncated from the end
+ * @return string Abbreviated string
+ */
+function abbreviate_string($str, $maxlength, $place_holder='...', $ending=false)
+{
+  $length = mb_strlen($str);
+
+  if ($length > $maxlength)
+  {
+    if ($ending)
+      return mb_substr($str, 0, $maxlength) . $place_holder;
+
+    $place_holder_length = mb_strlen($place_holder);
+    $first_part_length = floor(($maxlength - $place_holder_length)/2);
+    $second_starting_location = $length - $maxlength + $first_part_length + $place_holder_length;
+    $str = mb_substr($str, 0, $first_part_length) . $place_holder . mb_substr($str, $second_starting_location);
+  }
+
+  return $str;
+}
+
+
+/**
  * 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.
+ * @param string $path      Path to the file.
+ * @param string $name      File name (with suffix)
+ * @param string $failover  Mime type supplied for failover.
+ * @param string $is_stream Set to True if $path contains file body
  *
  * @return string
  * @author Till Klampaeckel <till@php.net>
  * @see    http://de2.php.net/manual/en/ref.fileinfo.php
  * @see    http://de2.php.net/mime_content_type
  */
-function rc_mime_content_type($path, $failover = 'application/octet-stream')
+function rc_mime_content_type($path, $name, $failover = 'application/octet-stream', $is_stream=false)
 {
     $mime_type = null;
     $mime_magic = rcmail::get_instance()->config->get('mime_magic');
+    $mime_ext = @include(RCMAIL_CONFIG_DIR . '/mimetypes.php');
 
-    if (!extension_loaded('fileinfo')) {
-        @dl('fileinfo.' . PHP_SHLIB_SUFFIX);
+    // use file name suffix with hard-coded mime-type map
+    if (is_array($mime_ext) && $name) {
+        if ($suffix = substr($name, strrpos($name, '.')+1)) {
+            $mime_type = $mime_ext[strtolower($suffix)];
+        }
     }
 
-    if (function_exists('finfo_open')) {
+    // try fileinfo extension if available
+    if (!$mime_type && function_exists('finfo_open')) {
         if ($finfo = finfo_open(FILEINFO_MIME, $mime_magic)) {
-            $mime_type = finfo_file($finfo, $path);
+            if ($is_stream)
+                $mime_type = finfo_buffer($finfo, $path);
+            else
+                $mime_type = finfo_file($finfo, $path);
             finfo_close($finfo);
         }
     }
-    if (!$mime_type && function_exists('mime_content_type')) {
-      $mime_type = mime_content_type($path); 
+
+    // try PHP's mime_content_type
+    if (!$mime_type && !$is_stream && function_exists('mime_content_type')) {
+      $mime_type = @mime_content_type($path);
     }
-    
+
+    // fall back to user-submitted string
     if (!$mime_type) {
         $mime_type = $failover;
+    }
+    else {
+        // Sometimes (PHP-5.3?) content-type contains charset definition,
+        // Remove it (#1487122) also "charset=binary" is useless
+        $mime_type = array_shift(preg_split('/[; ]/', $mime_type));
     }
 
     return $mime_type;
@@ -570,33 +404,20 @@
 
 
 /**
- * A method to guess encoding of a string.
+ * Detect image type of the given binary data by checking magic numbers
  *
- * @param string $string     	String.
- * @param string $failover 	Default result for failover.
- *
- * @return string
+ * @param string  Binary file content
+ * @return string Detected mime-type or jpeg as fallback
  */
-function rc_detect_encoding($string, $failover='')
+function rc_image_content_type($data)
 {
-    if (!function_exists('mb_detect_encoding')) {
-        return $failover;
-    }
+    $type = 'jpeg';
+    if      (preg_match('/^\x89\x50\x4E\x47/', $data)) $type = 'png';
+    else if (preg_match('/^\x47\x49\x46\x38/', $data)) $type = 'gif';
+    else if (preg_match('/^\x00\x00\x01\x00/', $data)) $type = 'ico';
+//  else if (preg_match('/^\xFF\xD8\xFF\xE0/', $data)) $type = 'jpeg';
 
-    // FIXME: the order is important, because sometimes 
-    // iso string is detected as euc-jp and etc.
-    $enc = array(
-      'UTF-8', 'SJIS', 'BIG5', 'GB2312',
-      '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', 
-      'ISO-2022-KR', 'ISO-2022-JP'
-    );
-
-    $result = mb_detect_encoding($string, join(',', $enc));
-
-    return $result ? $result : $failover;
+    return 'image/' . $type;
 }
 
 
@@ -620,9 +441,114 @@
       $p = $i + 1;
     }
   }
-  
+
   $result[] = substr($string, $p);
   return $result;
 }
 
-?>
+
+/**
+ * Get all keys from array (recursive)
+ * 
+ * @param array Input array
+ * @return array
+ */
+function array_keys_recursive($array)
+{
+  $keys = array();
+
+  if (!empty($array))
+    foreach ($array as $key => $child) {
+      $keys[] = $key;
+      foreach (array_keys_recursive($child) as $val)
+        $keys[] = $val;
+    }
+  return $keys;
+}
+
+
+/**
+ * mbstring replacement functions
+ */
+
+if (!extension_loaded('mbstring'))
+{
+    function mb_strlen($str)
+    {
+	return strlen($str);
+    }
+
+    function mb_strtolower($str)
+    {
+        return strtolower($str);
+    }
+
+    function mb_strtoupper($str)
+    {
+        return strtoupper($str);
+    }
+
+    function mb_substr($str, $start, $len=null)
+    {
+        return substr($str, $start, $len);
+    }
+
+    function mb_strpos($haystack, $needle, $offset=0)
+    {
+        return strpos($haystack, $needle, $offset);
+    }
+
+    function mb_strrpos($haystack, $needle, $offset=0)
+    {
+        return strrpos($haystack, $needle, $offset);
+    }
+}
+
+/**
+ * intl replacement functions
+ */
+
+if (!function_exists('idn_to_utf8'))
+{
+    function idn_to_utf8($domain, $flags=null)
+    {
+        static $idn, $loaded;
+
+        if (!$loaded) {
+            $idn = new Net_IDNA2();
+            $loaded = true;
+        }
+
+        if ($idn && $domain && preg_match('/(^|\.)xn--/i', $domain)) {
+            try {
+                $domain = $idn->decode($domain);
+            }
+            catch (Exception $e) {
+            }
+        }
+        return $domain;
+    }
+}
+
+if (!function_exists('idn_to_ascii'))
+{
+    function idn_to_ascii($domain, $flags=null)
+    {
+        static $idn, $loaded;
+
+        if (!$loaded) {
+            $idn = new Net_IDNA2();
+            $loaded = true;
+        }
+
+        if ($idn && $domain && preg_match('/[^\x20-\x7E]/', $domain)) {
+            try {
+                $domain = $idn->encode($domain);
+            }
+            catch (Exception $e) {
+            }
+        }
+        return $domain;
+    }
+}
+

--
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