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![Marc Piulachs](/assets/img/avatar_default.png)
* remove old outdated SD project files * make it use some .NET 2.0 features as generic collections and settings svn path=/trunk/; revision=31130
207 lines
5.6 KiB
C#
207 lines
5.6 KiB
C#
using System;
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using System.Xml;
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using System.Collections;
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namespace TechBot.Library
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{
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public class ErrorCommand : Command
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{
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private NtStatusCommand ntStatus;
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private WinerrorCommand winerror;
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private HResultCommand hresult;
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public ErrorCommand(TechBotService techBot)
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: base(techBot)
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{
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this.ntStatus = new NtStatusCommand(techBot);
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this.winerror = new WinerrorCommand(techBot);
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this.hresult = new HResultCommand(techBot);
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}
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/*
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public bool CanHandle(string commandName)
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{
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return CanHandle(commandName,
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new string[] { "error" });
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}
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*/
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public override string[] AvailableCommands
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{
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get { return new string[] { "error" }; }
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}
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private static int GetSeverity(long error)
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{
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return (int)((error >> 30) & 0x3);
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}
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private static bool IsCustomer(long error)
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{
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return (error & 0x20000000) != 0;
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}
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private static bool IsReserved(long error)
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{
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return (error & 0x10000000) != 0;
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}
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private static int GetFacility(long error)
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{
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return (int)((error >> 16) & 0xFFF);
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}
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private static short GetCode(long error)
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{
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return (short)((error >> 0) & 0xFFFF);
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}
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private static string FormatSeverity(long error)
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{
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int severity = GetSeverity(error);
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switch (severity)
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{
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case 0: return "SUCCESS";
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case 1: return "INFORMATIONAL";
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case 2: return "WARNING";
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case 3: return "ERROR";
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}
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return null;
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}
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private static string FormatFacility(long error)
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{
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int facility = GetFacility(error);
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return facility.ToString();
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}
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private static string FormatCode(long error)
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{
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int code = GetCode(error);
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return code.ToString();
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}
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public override void Handle(MessageContext context,
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string commandName,
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string parameters)
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{
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string originalErrorText = parameters.Trim();
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if (originalErrorText.Equals(String.Empty))
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{
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TechBot.ServiceOutput.WriteLine(context,
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"Please provide an Error Code.");
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return;
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}
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string errorText = originalErrorText;
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retry:
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NumberParser np = new NumberParser();
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long error = np.Parse(errorText);
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if (np.Error)
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{
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TechBot.ServiceOutput.WriteLine(context,
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String.Format("{0} is not a valid Error Code.",
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originalErrorText));
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return;
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}
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ArrayList descriptions = new ArrayList();
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// Error is out of bounds
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if ((ulong)error > uint.MaxValue)
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{
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// Do nothing
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}
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// Error is outside of the range [0, 65535]: it cannot be a plain Win32 error code
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else if ((ulong)error > ushort.MaxValue)
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{
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// Customer bit is set: custom error code
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if (IsCustomer(error))
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{
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string description = String.Format("[custom, severity {0}, facility {1}, code {2}]",
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FormatSeverity(error),
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FormatFacility(error),
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FormatCode(error));
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descriptions.Add(description);
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}
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// Reserved bit is set: HRESULT_FROM_NT(ntstatus)
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else if (IsReserved(error))
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{
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int status = (int)(error & 0xCFFFFFFF);
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string description = ntStatus.GetNtstatusDescription(status);
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if (description == null)
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description = status.ToString("X");
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description = String.Format("HRESULT_FROM_NT({0})", description);
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descriptions.Add(description);
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}
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// Win32 facility: HRESULT_FROM_WIN32(winerror)
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else if (GetFacility(error) == 7)
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{
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// Must be an error code
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if (GetSeverity(error) == 2)
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{
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short err = GetCode(error);
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string description = winerror.GetWinerrorDescription(err);
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if (description == null)
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description = err.ToString("D");
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description = String.Format("HRESULT_FROM_WIN32({0})", description);
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descriptions.Add(description);
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}
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}
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}
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string winerrorDescription = winerror.GetWinerrorDescription(error);
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string ntstatusDescription = ntStatus.GetNtstatusDescription(error);
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string hresultDescription = hresult.GetHresultDescription(error);
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if (winerrorDescription != null)
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descriptions.Add(winerrorDescription);
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if (ntstatusDescription != null)
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descriptions.Add(ntstatusDescription);
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if (hresultDescription != null)
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descriptions.Add(hresultDescription);
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if (descriptions.Count == 0)
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{
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// Last chance heuristics: attempt to parse a 8-digit decimal as hexadecimal
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if (errorText.Length == 8)
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{
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errorText = "0x" + errorText;
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goto retry;
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}
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TechBot.ServiceOutput.WriteLine(context,
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String.Format("I don't know about Error Code {0}.",
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originalErrorText));
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}
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else if (descriptions.Count == 1)
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{
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string description = (string)descriptions[0];
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TechBot.ServiceOutput.WriteLine(context,
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String.Format("{0} is {1}.",
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originalErrorText,
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description));
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}
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else
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{
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TechBot.ServiceOutput.WriteLine(context,
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String.Format("{0} could be:",
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originalErrorText));
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foreach(string description in descriptions)
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TechBot.ServiceOutput.WriteLine(context, String.Format("\t{0}", description));
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}
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}
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public override string Help()
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{
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return "!error <value>";
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}
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}
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}
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