From ced34cb15e095836767971aa4d27b141fb1d7ec9 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Sat, 18 Oct 2014 08:47:54 -0400
Subject: [PATCH] Merge pull request #230 from bytesatwork-xx/master

---
 program/lib/Roundcube/rcube_config.php |  255 ++++++++++++++++++++++++++++++++++++---------------
 1 files changed, 180 insertions(+), 75 deletions(-)

diff --git a/program/lib/Roundcube/rcube_config.php b/program/lib/Roundcube/rcube_config.php
index 90e1394..afe13e8 100644
--- a/program/lib/Roundcube/rcube_config.php
+++ b/program/lib/Roundcube/rcube_config.php
@@ -3,7 +3,7 @@
 /*
  +-----------------------------------------------------------------------+
  | This file is part of the Roundcube Webmail client                     |
- | Copyright (C) 2008-2012, The Roundcube Dev Team                       |
+ | Copyright (C) 2008-2013, The Roundcube Dev Team                       |
  |                                                                       |
  | Licensed under the GNU General Public License version 3 or            |
  | any later version with exceptions for skins & plugins.                |
@@ -27,7 +27,7 @@
     const DEFAULT_SKIN = 'larry';
 
     private $env = '';
-    private $basedir = 'config/';
+    private $paths = array();
     private $prop = array();
     private $errors = array();
     private $userprefs = array();
@@ -58,7 +58,32 @@
     public function __construct($env = '')
     {
         $this->env = $env;
-        $this->basedir = RCUBE_CONFIG_DIR;
+
+        if ($paths = getenv('RCUBE_CONFIG_PATH')) {
+            $this->paths = explode(PATH_SEPARATOR, $paths);
+            // make all paths absolute
+            foreach ($this->paths as $i => $path) {
+                if (!rcube_utils::is_absolute_path($path)) {
+                    if ($realpath = realpath(RCUBE_INSTALL_PATH . $path)) {
+                        $this->paths[$i] = unslashify($realpath) . '/';
+                    }
+                    else {
+                        unset($this->paths[$i]);
+                    }
+                }
+                else {
+                    $this->paths[$i] = unslashify($path) . '/';
+                }
+            }
+        }
+
+        if (defined('RCUBE_CONFIG_DIR') && !in_array(RCUBE_CONFIG_DIR, $this->paths)) {
+            $this->paths[] = RCUBE_CONFIG_DIR;
+        }
+
+        if (empty($this->paths)) {
+            $this->paths[] = RCUBE_INSTALL_PATH . 'config/';
+        }
 
         $this->load();
 
@@ -94,8 +119,7 @@
         }
 
         // load host-specific configuration
-        if (!empty($_SERVER['HTTP_HOST']))
-            $this->load_host_config();
+        $this->load_host_config();
 
         // set skin (with fallback to old 'skin_path' property)
         if (empty($this->prop['skin'])) {
@@ -138,17 +162,6 @@
         // enable display_errors in 'show' level, but not for ajax requests
         ini_set('display_errors', intval(empty($_REQUEST['_remote']) && ($this->prop['debug_level'] & 4)));
 
-        // set timezone auto settings values
-        if ($this->prop['timezone'] == 'auto') {
-          $this->prop['_timezone_value'] = $this->client_timezone();
-        }
-        else if (is_numeric($this->prop['timezone']) && ($tz = timezone_name_from_abbr("", $this->prop['timezone'] * 3600, 0))) {
-          $this->prop['timezone'] = $tz;
-        }
-        else if (empty($this->prop['timezone'])) {
-          $this->prop['timezone'] = 'UTC';
-        }
-
         // remove deprecated properties
         unset($this->prop['dst_active']);
 
@@ -162,20 +175,30 @@
      */
     private function load_host_config()
     {
-        $fname = null;
-
-        if (is_array($this->prop['include_host_config'])) {
-            $fname = $this->prop['include_host_config'][$_SERVER['HTTP_HOST']];
-        }
-        else if (!empty($this->prop['include_host_config'])) {
-            $fname = preg_replace('/[^a-z0-9\.\-_]/i', '', $_SERVER['HTTP_HOST']) . '.inc.php';
+        if (empty($this->prop['include_host_config'])) {
+            return;
         }
 
-        if ($fname) {
-            $this->load_from_file($fname);
+        foreach (array('HTTP_HOST', 'SERVER_NAME', 'SERVER_ADDR') as $key) {
+            $fname = null;
+            $name  = $_SERVER[$key];
+
+            if (!$name) {
+                continue;
+            }
+
+            if (is_array($this->prop['include_host_config'])) {
+                $fname = $this->prop['include_host_config'][$name];
+            }
+            else {
+                $fname = preg_replace('/[^a-z0-9\.\-_]/i', '', $name) . '.inc.php';
+            }
+
+            if ($fname && $this->load_from_file($fname)) {
+                return;
+            }
         }
     }
-
 
     /**
      * Read configuration from a file
@@ -186,47 +209,65 @@
      */
     public function load_from_file($file)
     {
-        $fpath = $this->resolve_path($file);
-        if ($fpath && is_file($fpath) && is_readable($fpath)) {
-            // use output buffering, we don't need any output here 
-            ob_start();
-            include($fpath);
-            ob_end_clean();
+        $success = false;
 
-            if (is_array($config)) {
-                $this->merge($config);
-                return true;
-            }
-            // deprecated name of config variable
-            else if (is_array($rcmail_config)) {
-                $this->merge($rcmail_config);
-                return true;
+        foreach ($this->resolve_paths($file) as $fpath) {
+            if ($fpath && is_file($fpath) && is_readable($fpath)) {
+                // use output buffering, we don't need any output here 
+                ob_start();
+                include($fpath);
+                ob_end_clean();
+
+                if (is_array($config)) {
+                    $this->merge($config);
+                    $success = true;
+                }
+                // deprecated name of config variable
+                if (is_array($rcmail_config)) {
+                    $this->merge($rcmail_config);
+                    $success = true;
+                }
             }
         }
 
-        return false;
+        return $success;
     }
 
     /**
-     * Helper method to resolve the absolute path to the given config file.
+     * Helper method to resolve absolute paths to the given config file.
      * This also takes the 'env' property into account.
+     *
+     * @param string  Filename or absolute file path
+     * @param boolean Return -$env file path if exists
+     * @return array  List of candidates in config dir path(s)
      */
-    public function resolve_path($file, $use_env = true)
+    public function resolve_paths($file, $use_env = true)
     {
-        if (strpos($file, '/') === false) {
-            $file = realpath($this->basedir . '/' . $file);
+        $files    = array();
+        $abs_path = rcube_utils::is_absolute_path($file);
+
+        foreach ($this->paths as $basepath) {
+            $realpath = $abs_path ? $file : realpath($basepath . '/' . $file);
+
+            // check if <file>-env.ini exists
+            if ($realpath && $use_env && !empty($this->env)) {
+                $envfile = preg_replace('/\.(inc.php)$/', '-' . $this->env . '.\\1', $realpath);
+                if (is_file($envfile))
+                    $realpath = $envfile;
+            }
+
+            if ($realpath) {
+                $files[] = $realpath;
+
+                // no need to continue the loop if an absolute file path is given
+                if ($abs_path) {
+                    break;
+                }
+            }
         }
 
-        // check if <file>-env.ini exists
-        if ($file && $use_env && !empty($this->env)) {
-            $envfile = preg_replace('/\.(inc.php)$/', '-' . $this->env . '.\\1', $file);
-            if (is_file($envfile))
-                return $envfile;
-        }
-
-        return $file;
+        return $files;
     }
-
 
     /**
      * Getter for a specific config parameter
@@ -246,8 +287,10 @@
 
         $rcube = rcube::get_instance();
 
-        if ($name == 'timezone' && isset($this->prop['_timezone_value'])) {
-            $result = $this->prop['_timezone_value'];
+        if ($name == 'timezone') {
+            if (empty($result) || $result == 'auto') {
+                $result = $this->client_timezone();
+            }
         }
         else if ($name == 'client_mimetypes') {
             if ($result == null && $def == null)
@@ -305,11 +348,6 @@
             }
         }
 
-        // convert user's timezone into the new format
-        if (is_numeric($prefs['timezone']) && ($tz = timezone_name_from_abbr('', $prefs['timezone'] * 3600, 0))) {
-            $prefs['timezone'] = $tz;
-        }
-
         // larry is the new default skin :-)
         if ($prefs['skin'] == 'default') {
             $prefs['skin'] = self::DEFAULT_SKIN;
@@ -317,13 +355,6 @@
 
         $this->userprefs = $prefs;
         $this->prop      = array_merge($this->prop, $prefs);
-
-        // override timezone settings with client values
-        if ($this->prop['timezone'] == 'auto') {
-            $this->prop['_timezone_value'] = isset($_SESSION['timezone']) ? $this->client_timezone() : $this->prop['_timezone_value'];
-        }
-        else if (isset($this->prop['_timezone_value']))
-           unset($this->prop['_timezone_value']);
     }
 
 
@@ -334,7 +365,11 @@
      */
     public function all()
     {
-        return $this->prop;
+        $rcube  = rcube::get_instance();
+        $plugin = $rcube->plugins->exec_hook('config_get', array(
+            'name' => '*', 'result' => $this->prop));
+
+        return $plugin['result'];
     }
 
     /**
@@ -464,13 +499,12 @@
      */
     private function client_timezone()
     {
-        if (isset($_SESSION['timezone']) && is_numeric($_SESSION['timezone'])
-              && ($ctz = timezone_name_from_abbr("", $_SESSION['timezone'] * 3600, 0))) {
-            return $ctz;
-        }
-        else if (!empty($_SESSION['timezone'])) {
+        // @TODO: remove this legacy timezone handling in the future
+        $props = $this->fix_legacy_props(array('timezone' => $_SESSION['timezone']));
+
+        if (!empty($props['timezone'])) {
             try {
-                $tz = timezone_open($_SESSION['timezone']);
+                $tz = new DateTimeZone($props['timezone']);
                 return $tz->getName();
             }
             catch (Exception $e) { /* gracefully ignore */ }
@@ -498,6 +532,77 @@
             }
         }
 
+        // convert deprecated numeric timezone value
+        if (isset($props['timezone']) && is_numeric($props['timezone'])) {
+            if ($tz = self::timezone_name_from_abbr($props['timezone'])) {
+                $props['timezone'] = $tz;
+            }
+            else {
+                unset($props['timezone']);
+            }
+        }
+
         return $props;
     }
+
+    /**
+     * timezone_name_from_abbr() replacement. Converts timezone offset
+     * into timezone name abbreviation.
+     *
+     * @param float $offset Timezone offset (in hours)
+     *
+     * @return string Timezone abbreviation
+     */
+    static public function timezone_name_from_abbr($offset)
+    {
+        // List of timezones here is not complete - https://bugs.php.net/bug.php?id=44780
+        if ($tz = timezone_name_from_abbr('', $offset * 3600, 0)) {
+            return $tz;
+        }
+
+        // try with more complete list (#1489261)
+        $timezones = array(
+            '-660' => "Pacific/Apia",
+            '-600' => "Pacific/Honolulu",
+            '-570' => "Pacific/Marquesas",
+            '-540' => "America/Anchorage",
+            '-480' => "America/Los_Angeles",
+            '-420' => "America/Denver",
+            '-360' => "America/Chicago",
+            '-300' => "America/New_York",
+            '-270' => "America/Caracas",
+            '-240' => "America/Halifax",
+            '-210' => "Canada/Newfoundland",
+            '-180' => "America/Sao_Paulo",
+             '-60' => "Atlantic/Azores",
+               '0' => "Europe/London",
+              '60' => "Europe/Paris",
+             '120' => "Europe/Helsinki",
+             '180' => "Europe/Moscow",
+             '210' => "Asia/Tehran",
+             '240' => "Asia/Dubai",
+             '300' => "Asia/Karachi",
+             '270' => "Asia/Kabul",
+             '300' => "Asia/Karachi",
+             '330' => "Asia/Kolkata",
+             '345' => "Asia/Katmandu",
+             '360' => "Asia/Yekaterinburg",
+             '390' => "Asia/Rangoon",
+             '420' => "Asia/Krasnoyarsk",
+             '480' => "Asia/Shanghai",
+             '525' => "Australia/Eucla",
+             '540' => "Asia/Tokyo",
+             '570' => "Australia/Adelaide",
+             '600' => "Australia/Melbourne",
+             '630' => "Australia/Lord_Howe",
+             '660' => "Asia/Vladivostok",
+             '690' => "Pacific/Norfolk",
+             '720' => "Pacific/Auckland",
+             '765' => "Pacific/Chatham",
+             '780' => "Pacific/Enderbury",
+             '840' => "Pacific/Kiritimati",
+        );
+
+        return $timezones[(string) intval($offset * 60)];
+    }
 }

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