Utils/Utils.cs

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using System;

namespace IndiaStudyChannel.Utils
{
	/// <summary>
	/// Summary description for Utils.
	/// </summary>
    /// 由 liudao 翻译整理
    /// 该源码下载自www.51aspx.com(５１ａｓｐｘ．ｃｏｍ)
	public class Utils
	{
		public Utils()
		{
		}

		/// <summary>
		/// This method removes some dangerous characters from the word to avoid 'Sql Injection attack'.
		/// </summary>
		/// <param name="s"></param>
		/// <returns></returns>
		public static string MakeSafeWord(string s)
		{
			if ( s == null )
				return "";

			return s.Replace("'", "").Replace("--", "");
		}

		/// <summary>
		/// This method checks if the passed user id is an adinistrator or if this is same as current user.
		/// </summary>
		/// <param name="userId"></param>
		/// <returns></returns>
		public static bool IsOwner(object userId)
		{
			if ( System.Web.HttpContext.Current.Session["CurrentUser"] == null )
			{
				// There is no userid saved in session. This means user has not logged in.
				return false;
			}

			// Get current user from session.
			string currentUser = System.Web.HttpContext.Current.Session["CurrentUser"].ToString();

			// Get the admin user id from config file.
			string adminUser = System.Configuration.ConfigurationSettings.AppSettings["AdminUser"];

			if ( currentUser == adminUser )
			{
				// Current user is an administrator. Administrator is Owner for all submissions.
				return true;
			}

			if ( userId != null && userId.ToString() == currentUser )
			{
				// Current user is same as the userId passed.
				return true;
			}

			return false;