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/*----------------------------------------------------------

This Source Code Form is subject to the terms of the

Mozilla Public License, v.2.0. If a copy of the MPL

was not distributed with this file, You can obtain one

at http://mozilla.org/MPL/2.0/.

----------------------------------------------------------*/

using System;

using System.IO;

using System.Net.Configuration;

using System.Reflection;

using System.Text;

using ScriptEngine.Environment;

using ScriptEngine.HostedScript;

namespace oscript

{

internal static class ScriptFileHelper

{

public static bool CodeStatisticsEnabled { get; private set; }

public static string CodeStatisticsFileName { get; private set; }

public static string CustomConfigPath(string scriptPath)

{

var dir = Path.GetDirectoryName(scriptPath);

var cfgPath = Path.Combine(dir, HostedScriptEngine.ConfigFileName);

return File.Exists(cfgPath) ? cfgPath : null;

}

public static void EnableCodeStatistics(string fileName)

{

CodeStatisticsEnabled = fileName != null;

CodeStatisticsFileName = fileName;

}

// http://www.cookcomputing.com/blog/archives/000556.html

public static bool SetAllowUnsafeHeaderParsing()

{

var aNetAssembly = Assembly.GetAssembly(typeof(SettingsSection));

if (aNetAssembly == null) return false;

var aSettingsType = aNetAssembly.GetType("System.Net.Configuration.SettingsSectionInternal");

if (aSettingsType == null) return false;

var anInstance = aSettingsType.InvokeMember("Section", BindingFlags.Static | BindingFlags.GetProperty | BindingFlags.NonPublic, null, null, new object[]

{

});

if (anInstance == null) return false;

var aUseUnsafeHeaderParsing = aSettingsType.GetField("useUnsafeHeaderParsing", BindingFlags.NonPublic | BindingFlags.Instance);

if (aUseUnsafeHeaderParsing == null) return false;

aUseUnsafeHeaderParsing.SetValue(anInstance, true);

return true;

}

private static bool ConvertSettingValueToBool(string value, bool defaultValue = false)

{

if (value == null) return defaultValue;

if (string.Compare(value, "true", StringComparison.InvariantCultureIgnoreCase) == 0) return true;

if (string.Compare(value, "1", StringComparison.InvariantCultureIgnoreCase) == 0) return true;

if (string.Compare(value, "yes", StringComparison.InvariantCultureIgnoreCase) == 0) return true;

if (string.Compare(value, "false", StringComparison.InvariantCultureIgnoreCase) == 0) return false;

if (string.Compare(value, "0", StringComparison.InvariantCultureIgnoreCase) == 0) return false;

if (string.Compare(value, "no", StringComparison.InvariantCultureIgnoreCase) == 0) return false;

return defaultValue;

}

public static void OnBeforeScriptRead(HostedScriptEngine engine)

{

var cfg = engine.GetWorkingConfig();

var openerEncoding = cfg["encoding.script"];

if (!string.IsNullOrWhiteSpace(openerEncoding))

if (StringComparer.InvariantCultureIgnoreCase.Compare(openerEncoding, "default") == 0)

engine.Loader.ReaderEncoding = FileOpener.SystemSpecificEncoding();

else

engine.Loader.ReaderEncoding = Encoding.GetEncoding(openerEncoding);

var strictWebRequest = ConvertSettingValueToBool(cfg["http.strictWebRequest"]);

if (!strictWebRequest)

SetAllowUnsafeHeaderParsing();

if (CodeStatisticsEnabled)

engine.EnableCodeStatistics();

}

public static void OnAfterScriptExecute(HostedScriptEngine engine)

{

if (CodeStatisticsEnabled)

{

var codeStat = engine.GetCodeStatData();

var statsWriter = new CodeStatWriter(CodeStatisticsFileName, CodeStatWriterType.JSON);

statsWriter.Write(codeStat);

}

}

}

}