From b79cc545ec020f7dd4bd83dcd06af3cf2b1fcaff Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Tue, 28 Aug 2012 05:20:20 -0400
Subject: [PATCH] Improvements/fixes for Larry skin

---
 program/include/rcube_utils.php |  121 +++++++++++++++++++++++++++++++++++-----
 1 files changed, 106 insertions(+), 15 deletions(-)

diff --git a/program/include/rcube_utils.php b/program/include/rcube_utils.php
index 5b31537..23bf556 100644
--- a/program/include/rcube_utils.php
+++ b/program/include/rcube_utils.php
@@ -18,9 +18,6 @@
  | Author: Thomas Bruederli <roundcube@gmail.com>                        |
  | Author: Aleksander Machniak <alec@alec.pl>                            |
  +-----------------------------------------------------------------------+
-
- $Id$
-
 */
 
 
@@ -50,7 +47,7 @@
         }
 
         $cookie = session_get_cookie_params();
-        $secure = self::https_check();
+        $secure = $cookie['secure'] || self::https_check();
 
         setcookie($name, $value, $exp, $cookie['path'], $cookie['domain'], $secure, true);
     }
@@ -87,17 +84,17 @@
 
         // from PEAR::Validate
         $regexp = '&^(?:
-	        ("\s*(?:[^"\f\n\r\t\v\b\s]+\s*)+")| 			 	            #1 quoted name
-	        ([-\w!\#\$%\&\'*+~/^`|{}=]+(?:\.[-\w!\#\$%\&\'*+~/^`|{}=]+)*)) 	#2 OR dot-atom (RFC5322)
-	        $&xi';
+            ("\s*(?:[^"\f\n\r\t\v\b\s]+\s*)+")|                             #1 quoted name
+            ([-\w!\#\$%\&\'*+~/^`|{}=]+(?:\.[-\w!\#\$%\&\'*+~/^`|{}=]+)*))  #2 OR dot-atom (RFC5322)
+            $&xi';
 
         if (!preg_match($regexp, $local_part)) {
             return false;
         }
 
-        // Check domain part
-        if (preg_match('/^\[*(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}\]*$/', $domain_part)) {
-            return true; // IP address
+        // Validate domain part
+        if (preg_match('/^\[((IPv6:[0-9a-f:.]+)|([0-9.]+))\]$/i', $domain_part, $matches)) {
+            return self::check_ip(preg_replace('/^IPv6:/i', '', $matches[1])); // valid IPv4 or IPv6 address
         }
         else {
             // If not an IP address
@@ -111,6 +108,11 @@
                 if (!preg_match('/^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]))$/', $part)) {
                     return false;
                 }
+            }
+
+            // last domain part
+            if (preg_match('/[^a-zA-Z]/', array_pop($domain_array))) {
+                return false;
             }
 
             $rcube = rcube::get_instance();
@@ -144,6 +146,52 @@
         return false;
     }
 
+
+    /**
+     * Validates IPv4 or IPv6 address
+     *
+     * @param string $ip IP address in v4 or v6 format
+     *
+     * @return bool True if the address is valid
+     */
+    public static function check_ip($ip)
+    {
+        // IPv6, but there's no build-in IPv6 support
+        if (strpos($ip, ':') !== false && !defined('AF_INET6')) {
+            $parts = explode(':', $domain_part);
+            $count = count($parts);
+
+            if ($count > 8 || $count < 2) {
+                return false;
+            }
+
+            foreach ($parts as $idx => $part) {
+                $length = strlen($part);
+                if (!$length) {
+                    // there can be only one ::
+                    if ($found_empty) {
+                        return false;
+                    }
+                    $found_empty = true;
+                }
+                // last part can be an IPv4 address
+                else if ($idx == $count - 1) {
+                    if (!preg_match('/^[0-9a-f]{1,4}$/i', $part)) {
+                        return @inet_pton($part) !== false;
+                    }
+                }
+                else if (!preg_match('/^[0-9a-f]{1,4}$/i', $part)) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        return @inet_pton($ip) !== false;
+    }
+
+
     /**
      * Check whether the HTTP referer matches the current request
      *
@@ -152,8 +200,8 @@
     public static function check_referer()
     {
         $uri = parse_url($_SERVER['REQUEST_URI']);
-        $referer = parse_url(rcube_request_header('Referer'));
-        return $referer['host'] == rcube_request_header('Host') && $referer['path'] == $uri['path'];
+        $referer = parse_url(self::request_header('Referer'));
+        return $referer['host'] == self::request_header('Host') && $referer['path'] == $uri['path'];
     }
 
 
@@ -619,8 +667,10 @@
     {
         // %n - host
         $n = preg_replace('/:\d+$/', '', $_SERVER['SERVER_NAME']);
-        // %d - domain name without first part, e.g. %n=mail.domain.tld, %d=domain.tld
-        $d = preg_replace('/^[^\.]+\./', '', $n);
+        // %t - host name without first part, e.g. %n=mail.domain.tld, %t=domain.tld
+        $t = preg_replace('/^[^\.]+\./', '', $n);
+        // %d - domain name without first part
+        $d = preg_replace('/^[^\.]+\./', '', $_SERVER['HTTP_HOST']);
         // %h - IMAP host
         $h = $_SESSION['storage_host'] ? $_SESSION['storage_host'] : $host;
         // %z - IMAP domain without first part, e.g. %h=imap.domain.tld, %z=domain.tld
@@ -635,7 +685,7 @@
             }
         }
 
-        $name = str_replace(array('%n', '%d', '%h', '%z', '%s'), array($n, $d, $h, $z, $s[2]), $name);
+        $name = str_replace(array('%n', '%t', '%d', '%h', '%z', '%s'), array($n, $t, $d, $h, $z, $s[2]), $name);
         return $name;
     }
 
@@ -790,4 +840,45 @@
         return $at ? $user . '@' . $domain : $domain;
     }
 
+    /**
+     * Split the given string into word tokens
+     *
+     * @param string Input to tokenize
+     * @return array List of tokens
+     */
+    public static function tokenize_string($str)
+    {
+        return explode(" ", preg_replace(
+            array('/[\s;\/+-]+/i', '/(\d)[-.\s]+(\d)/', '/\s\w{1,3}\s/u'),
+            array(' ', '\\1\\2', ' '),
+            $str));
+    }
+
+    /**
+     * Normalize the given string for fulltext search.
+     * Currently only optimized for Latin-1 characters; to be extended
+     *
+     * @param string  Input string (UTF-8)
+     * @param boolean True to return list of words as array
+     * @return mixed  Normalized string or a list of normalized tokens
+     */
+    public static function normalize_string($str, $as_array = false)
+    {
+        // split by words
+        $arr = self::tokenize_string($str);
+
+        foreach ($arr as $i => $part) {
+            if (utf8_encode(utf8_decode($part)) == $part) {  // is latin-1 ?
+                $arr[$i] = utf8_encode(strtr(strtolower(strtr(utf8_decode($part),
+                    'ÇçäâàåéêëèïîìÅÉöôòüûùÿøØáíóúñÑÁÂÀãÃÊËÈÍÎÏÓÔõÕÚÛÙýÝ',
+                    'ccaaaaeeeeiiiaeooouuuyooaiounnaaaaaeeeiiioooouuuyy')),
+                    array('ß' => 'ss', 'ae' => 'a', 'oe' => 'o', 'ue' => 'u')));
+            }
+            else
+                $arr[$i] = mb_strtolower($part);
+        }
+
+        return $as_array ? $arr : join(" ", $arr);
+    }
+
 }

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