X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;f=WEB-INF%2Flib%2Fcommon.lib.php;h=d29ba1a121b2f96edb650e246380a738716a2e9c;hb=b027028b5322fcbfb6de53e7a74529cbac7931de;hp=d98e8889298ca10d37dbe70a86051a4ca3d045d4;hpb=e20813a282b957d4b9112b825f87502c3525a780;p=timetracker.git

diff --git a/WEB-INF/lib/common.lib.php b/WEB-INF/lib/common.lib.php
index d98e8889..d29ba1a1 100644
--- a/WEB-INF/lib/common.lib.php
+++ b/WEB-INF/lib/common.lib.php
@@ -26,17 +26,12 @@
 // | https://www.anuko.com/time_tracker/credits.htm
 // +----------------------------------------------------------------------+
 
-	/**
-	 * @return unknown
-	 * @param file unknown
-	 * @param version = "" unknown
-	 * @desc Loads a class
-	 */
-	function import( $class_name ) {
-	    $libs = array(
-			dirname($_SERVER["SCRIPT_FILENAME"]),
-			LIBRARY_DIR
-		);
+// import() function loads a class.
+function import($class_name) {
+  $libs = array(
+    dirname($_SERVER["SCRIPT_FILENAME"]),
+    LIBRARY_DIR
+  );
 
 	    $pos = strpos($class_name, ".");
         if (!($pos === false)) {
@@ -61,7 +56,7 @@
 
 		print '<br><b>load_class: error loading file "'.$filename.'"</b>';
 		die();
-	}
+}
 
 	// The mu_sort function is used to sort a multi-dimensional array.
 	// It looks like the code example is taken from the PHP manual http://ca2.php.net/manual/en/function.sort.php
@@ -127,7 +122,6 @@
     			die($mdb2->getMessage());
 			}
 
-			$mdb2->setOption('debug', true);
 			$mdb2->setFetchMode(MDB2_FETCHMODE_ASSOC);
 			
    			$GLOBALS["_MDB2_CONNECTION"] = $mdb2;
@@ -136,23 +130,17 @@
 	}
 
 
-	function closeConnection() {
-		if (isset($GLOBALS["_DB_CONNECTION"])) {
-			$GLOBALS["_DB_CONNECTION"]->close();
-			unset($GLOBALS["_DB_CONNECTION"]);
-		}
-	}
-
-function time_to_decimal($a) {
+// time_to_decimal converts a time string such as 1:15 to its decimal representation such as 1.25 or 1,25.
+function time_to_decimal($val) {
   global $user;
-  $tmp = explode(":", $a);
-  if($tmp[1]{0}=="0") $tmp[1] = $tmp[1]{1};
+  $parts = explode(':', $val); // parts[0] is hours, parts[1] is minutes.
 
-  $m = round($tmp[1]*100/60);
+  $minutePercent = round($parts[1]*100/60); // Integer value (0-98) of percent of minutes portion in the hour.
+  if($minutePercent < 10) $minutePercent = '0'.$minutePercent; // Pad small values with a 0 to always have 2 digits.
 
-  if($m<10) $m = "0".$m;
-  $time = $tmp[0].$user->decimal_mark.$m;
-  return $time;
+  $decimalTime = $parts[0].$user->decimal_mark.$minutePercent; // Construct decimal representation of time value.
+
+  return $decimalTime;
 }
 
 function sec_to_time_fmt_hm($sec)
@@ -162,11 +150,9 @@ function sec_to_time_fmt_hm($sec)
 
 function magic_quotes_off()
 {
-  // if (get_magic_quotes_gpc()) { // This check is now done before calling this function.
-    $_POST = array_map('stripslashes_deep', $_POST);
-    $_GET = array_map('stripslashes_deep', $_GET);
-    $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
-  // }
+  $_POST = array_map('stripslashes_deep', $_POST);
+  $_GET = array_map('stripslashes_deep', $_GET);
+  $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
 }
 
 // check_extension checks whether a required PHP extension is loaded and dies if not so.
@@ -322,22 +308,93 @@ function ttValidCronSpec($val)
   return true;
 }
 
-// ttAccessCheck is used to check whether user is allowed to proceed. This function is used
-// as an initial check on all publicly available pages.
-function ttAccessCheck($required_rights)
+// ttValidCondition is used to check user input to validate a notification condition.
+function ttValidCondition($val, $emptyValid = true)
+{
+  $val = trim($val);
+  if (strlen($val) == 0)
+    return ($emptyValid ? true : false);
+
+  // String must not be XSS evil (to insert JavaScript).
+  if (stristr($val, '<script>') || stristr($val, '<script '))
+    return false;
+
+  if (!preg_match("/^count\s?(=|[<>]=?|<>)\s?\d+$/", $val))
+    return false;
+
+  return true;
+}
+
+// ttValidIP is used to check user input to validate a comma-separated
+// list of IP subnet "prefixes", for example 192.168.0 (note: no .* in the end).
+// We keep regexp checks here simple - they are not precise.
+// For example, IPv4-mapped IPv6 addresses will fail. This may need to be fixed.
+function ttValidIP($val, $emptyValid = false)
+{
+  $val = trim($val);
+  if (strlen($val) == 0 && $emptyValid)
+    return true;
+
+  $subnets = explode(',', $val);
+  foreach ($subnets as $subnet) {
+    $ipv4 = preg_match('/^\d\d?\d?(\.\d\d?\d?){0,3}\.?$/', $subnet); // Not precise check.
+    $ipv6 = preg_match('/^([0-9a-fA-F]{4})(:[0-9a-fA-F]{4}){0,7}$/', $subnet); // Not precise check.
+    if (!$ipv4 && !$ipv6)
+      return false;
+  }
+  return true;
+}
+
+// ttAccessAllowed checks whether user is allowed access to a particular page.
+// It is used as an initial check on all publicly available pages
+// (except login.php, register.php, and others where we don't have to check).
+function ttAccessAllowed($required_right)
 {
   global $auth;
   global $user;
-  
+
   // Redirect to login page if user is not authenticated.
   if (!$auth->isAuthenticated()) {
     header('Location: login.php');
     exit();
   }
-  
-  // Check rights.
-  if (!($required_rights & $user->rights))
-    return false;
-    
-  return true;
+
+  // Check IP restriction, if set.
+  if ($user->allow_ip && !$user->can('override_allow_ip')) {
+    $access_allowed = false;
+    $user_ip = $_SERVER['REMOTE_ADDR'];
+    $allowed_ip_array = explode(',', $user->allow_ip);
+    foreach ($allowed_ip_array as $allowed_ip) {
+      $len = strlen($allowed_ip);
+      if (substr($user_ip, 0, $len) === $allowed_ip) { // startsWith check.
+         $access_allowed = true;
+         break;
+      }
+    }
+    if (!$access_allowed) return false;
+  }
+
+  // Check if user has the right.
+  if (in_array($required_right, $user->rights)) {
+    import('ttUserHelper');
+    ttUserHelper::updateLastAccess();
+    return true;
+  }
+
+  return false;
+}
+
+// ttStartsWith functions checks if a string starts with a given substring.
+function ttStartsWith($string, $startString)
+{
+    $len = strlen($startString);
+    return (substr($string, 0, $len) === $startString);
+}
+
+// ttDateToUserFormat converts a date from database format to user format.
+function ttDateToUserFormat($date)
+{
+  global $user;
+  $o_date = new DateAndTime(DB_DATEFORMAT, $date);
+  return $o_date->toString($user->date_format);
 }