using System.Runtime.InteropServices;
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using System.Web;
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namespace Common
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{
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public class RequestHelper
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{
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public static string GetScriptNameQueryString
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{
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get
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{
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return HttpContext.Current.Request.ServerVariables["QUERY_STRING"].ToString();
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}
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}
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public static string GetScriptName
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{
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get
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{
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return HttpContext.Current.Request.ServerVariables["SCRIPT_NAME"].ToString();
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}
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}
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public static string GetScriptUrl
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{
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get
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{
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return (RequestHelper.GetScriptNameQueryString == "") ? RequestHelper.GetScriptName : string.Format("{0}?{1}", RequestHelper.GetScriptName, RequestHelper.GetScriptNameQueryString);
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}
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}
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public static string GetScriptNameQuery
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{
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get
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{
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return HttpContext.Current.Request.Url.Query;
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}
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}
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[DllImport("wininet")]
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private static extern bool InternetGetConnectedState(out int connectionDescription, int reservedValue);
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public static bool IsConnectedInternet()
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{
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int i = 0;
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return RequestHelper.InternetGetConnectedState(out i, 0);
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}
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public static string UrlEncode(string str)
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{
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string result;
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if (string.IsNullOrEmpty(str))
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{
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result = "";
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}
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else
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{
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str = str.Replace("'", "");
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result = HttpContext.Current.Server.UrlEncode(str);
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}
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return result;
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}
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public static string UrlDecode(string str)
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{
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string result;
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if (string.IsNullOrEmpty(str))
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{
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result = "";
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}
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else
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{
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result = HttpContext.Current.Server.UrlDecode(str);
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}
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return result;
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}
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public static string GetIP()
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{
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string result = string.Empty;
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result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
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if (string.IsNullOrEmpty(result))
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{
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result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
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}
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if (string.IsNullOrEmpty(result))
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{
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result = HttpContext.Current.Request.UserHostAddress;
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}
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string result2;
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if (string.IsNullOrEmpty(result))
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{
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result2 = "127.0.0.1";
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}
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else
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{
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result2 = result;
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}
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return result2;
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}
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public static string buildurl(string url, string param)
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{
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string result;
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if (url.IndexOf(param) > 0)
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{
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string url2;
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if (url.IndexOf("&", url.IndexOf(param) + param.Length) > 0)
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{
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url2 = url.Substring(0, url.IndexOf(param) - 1) + url.Substring(url.IndexOf("&", url.IndexOf(param) + param.Length) + 1);
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}
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else
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{
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url2 = url.Substring(0, url.IndexOf(param) - 1);
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}
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result = url2;
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}
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else
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{
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result = url;
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}
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return result;
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}
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public static bool IsPost()
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{
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return HttpContext.Current.Request.HttpMethod.Equals("POST");
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}
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public static bool IsGet()
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{
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return HttpContext.Current.Request.HttpMethod.Equals("GET");
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}
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public static string GetServerString(string strName)
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{
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string result;
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if (HttpContext.Current.Request.ServerVariables[strName] == null)
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{
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result = "";
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}
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else
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{
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result = HttpContext.Current.Request.ServerVariables[strName].ToString();
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}
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return result;
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}
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public static string GetUrlReferrer()
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{
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string retVal = null;
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try
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{
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retVal = HttpContext.Current.Request.UrlReferrer.ToString();
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}
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catch
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{
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}
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string result;
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if (retVal == null)
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{
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result = "";
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}
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else
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{
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result = retVal;
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}
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return result;
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}
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public static string GetCurrentFullHost()
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{
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HttpRequest request = HttpContext.Current.Request;
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string result;
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if (!request.Url.IsDefaultPort)
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{
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result = string.Format("{0}:{1}", request.Url.Host, request.Url.Port.ToString());
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}
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else
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{
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result = request.Url.Host;
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}
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return result;
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}
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public static string GetHost()
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{
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return HttpContext.Current.Request.Url.Host;
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}
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public static string GetDnsSafeHost()
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{
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return HttpContext.Current.Request.Url.DnsSafeHost;
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}
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public static string GetRawUrl()
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{
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return HttpContext.Current.Request.RawUrl;
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}
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public static bool IsBrowserGet()
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{
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string[] BrowserName = new string[]
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{
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"ie",
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"opera",
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"netscape",
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"mozilla",
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"konqueror",
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"firefox"
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};
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string curBrowser = HttpContext.Current.Request.Browser.Type.ToLower();
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bool result;
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for (int i = 0; i < BrowserName.Length; i++)
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{
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if (curBrowser.IndexOf(BrowserName[i]) >= 0)
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{
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result = true;
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return result;
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}
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}
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result = false;
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return result;
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}
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public static bool IsSearchEnginesGet()
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{
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bool result;
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if (HttpContext.Current.Request.UrlReferrer == null)
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{
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result = false;
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}
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else
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{
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string[] SearchEngine = new string[]
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{
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"google",
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"yahoo",
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"msn",
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"baidu",
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"sogou",
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"sohu",
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"sina",
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"163",
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"lycos",
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"tom",
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"yisou",
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"iask",
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"soso",
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"gougou",
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"zhongsou"
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};
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string tmpReferrer = HttpContext.Current.Request.UrlReferrer.ToString().ToLower();
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for (int i = 0; i < SearchEngine.Length; i++)
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{
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if (tmpReferrer.IndexOf(SearchEngine[i]) >= 0)
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{
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result = true;
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return result;
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}
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}
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result = false;
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}
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return result;
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}
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public static string GetUrl()
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{
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return HttpContext.Current.Request.Url.ToString();
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}
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public static string GetPageName()
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{
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string[] urlArr = HttpContext.Current.Request.Url.AbsolutePath.Split(new char[]
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{
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'/'
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});
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return urlArr[urlArr.Length - 1].ToLower();
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}
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public static int GetParamCount()
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{
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return HttpContext.Current.Request.Form.Count + HttpContext.Current.Request.QueryString.Count;
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}
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}
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}
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