mirror of
https://github.com/xcp-ng/xenadmin.git
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419 lines
17 KiB
C#
419 lines
17 KiB
C#
/* Copyright (c) Cloud Software Group, Inc.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Net;
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using System.ComponentModel;
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using System.Threading;
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using System.IO;
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using System.Linq;
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using System.Net.NetworkInformation;
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using XenCenterLib.Archive;
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using XenAdmin.Actions.Updates;
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namespace XenAdmin.Actions
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{
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internal enum DownloadState
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{
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InProgress,
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Cancelled,
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Completed,
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Error
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}
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public abstract class DownloadUnzipUpdateAction : AsyncAction
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{
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private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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protected readonly string UpdateName;
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protected readonly string[] updateFileSuffixes;
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public string UpdatePath { get; protected set; }
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public string ByteProgressDescription { get; set; }
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protected DownloadUnzipUpdateAction(string updateName, params string[] updateFileExtensions)
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: base(null, string.Empty, string.Empty, true)
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{
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UpdateName = updateName;
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updateFileSuffixes = (from item in updateFileExtensions select $".{item}").ToArray();
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}
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protected string ExtractFile(string zippedFilePath, bool deleteOriginal)
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{
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log.DebugFormat("Extracting XenServer update '{0}'", UpdateName);
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Description = string.Format(Messages.DOWNLOAD_AND_EXTRACT_ACTION_EXTRACTING_DESC, UpdateName);
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ArchiveIterator iterator = null;
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ZipArchiveIterator zipIterator = null;
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try
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{
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using (Stream stream = new FileStream(zippedFilePath, FileMode.Open, FileAccess.Read))
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{
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iterator = ArchiveFactory.Reader(ArchiveFactory.Type.Zip, stream);
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zipIterator = iterator as ZipArchiveIterator;
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if (zipIterator != null)
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zipIterator.CurrentFileExtracted += UpdateExtractionProgress;
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while (iterator.HasNext())
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{
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string currentExtension = Path.GetExtension(iterator.CurrentFileName());
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if (updateFileSuffixes.Any(item => item.ToLowerInvariant() == currentExtension.ToLowerInvariant()))
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{
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string path = Path.Combine(Path.GetTempPath(), iterator.CurrentFileName());
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log.InfoFormat(
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"Found '{0}' in the downloaded archive when looking for a '{1}' file. Extracting...",
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iterator.CurrentFileName(), currentExtension);
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using (Stream outputStream = new FileStream(path, FileMode.Create))
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{
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iterator.ExtractCurrentFile(outputStream, null);
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log.InfoFormat("Update file extracted to '{0}'", path);
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return path;
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}
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}
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}
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}
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return null;
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}
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catch (Exception e)
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{
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log.Error("Exception occurred when extracting downloaded archive.", e);
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throw new Exception(Messages.DOWNLOAD_AND_EXTRACT_ACTION_EXTRACTING_ERROR);
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}
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finally
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{
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if (zipIterator != null)
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zipIterator.CurrentFileExtracted -= UpdateExtractionProgress;
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iterator?.Dispose();
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if (deleteOriginal)
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{
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try
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{
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File.Delete(zippedFilePath);
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}
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catch
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{
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// ignored
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}
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}
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log.DebugFormat("Extracting XenServer update '{0}' completed", UpdateName);
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}
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}
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protected override void CancelRelatedTask()
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{
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}
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protected abstract void UpdateExtractionProgress(int fileIndex, int totalFileCount);
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}
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public class DownloadAndUnzipUpdateAction : DownloadUnzipUpdateAction, IByteProgressAction
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{
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private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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/// <summary>
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/// If you consider increasing this for any reason (I think 5 is already more than enough),
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/// have a look at the usage of SLEEP_TIME_BEFORE_RETRY_MS in DownloadFile() as well.
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/// </summary>
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private const int MAX_NUMBER_OF_TRIES = 5;
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private const int SLEEP_TIME_TO_CHECK_DOWNLOAD_STATUS_MS = 900;
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private const int SLEEP_TIME_BEFORE_RETRY_MS = 5000;
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private WebClient _client;
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private readonly Uri _updateUri;
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private readonly bool _skipUnzipping;
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private DownloadState _updateDownloadState;
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private Exception _updateDownloadError;
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public DownloadAndUnzipUpdateAction(string updateName, Uri uri, params string[] updateFileExtensions)
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: base(updateName, updateFileExtensions)
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{
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Title = string.Format(Messages.DOWNLOAD_AND_EXTRACT_ACTION_TITLE, updateName);
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_updateUri = uri;
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_skipUnzipping = updateFileSuffixes.Any(item => uri.ToString().ToLowerInvariant().Contains(item.ToLowerInvariant()));
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}
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protected override void Run()
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{
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DownloadFile(out var localPath);
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if (IsCompleted || Cancelled)
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return;
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if (Cancelling)
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throw new CancelledException();
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if (_skipUnzipping)
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{
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try
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{
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string newFilePath = Path.Combine(Path.GetDirectoryName(localPath), UpdateName);
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if (File.Exists(newFilePath))
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File.Delete(newFilePath);
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File.Move(localPath, newFilePath);
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UpdatePath = newFilePath;
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log.DebugFormat("XenServer update '{0}' is ready", UpdateName);
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}
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catch (Exception e)
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{
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log.Error("Exception occurred when preparing archive.", e);
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throw;
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}
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}
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else
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{
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UpdatePath = ExtractFile(localPath, true);
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}
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if (string.IsNullOrEmpty(UpdatePath))
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{
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log.InfoFormat(
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"The downloaded archive does not contain a file with any of the following extensions: {0}",
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string.Join(", ", updateFileSuffixes));
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throw new Exception(Messages.DOWNLOAD_AND_EXTRACT_ACTION_FILE_NOT_FOUND);
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}
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Description = Messages.COMPLETED;
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}
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private void DownloadFile(out string outputFileName)
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{
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outputFileName = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
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log.InfoFormat("Downloading update '{0}' (from '{1}') to '{2}'", UpdateName, _updateUri, outputFileName);
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Description = string.Format(Messages.DOWNLOAD_AND_EXTRACT_ACTION_DOWNLOADING_DESC, UpdateName);
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LogDescriptionChanges = false;
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_client = new WebClient();
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_client.DownloadProgressChanged += client_DownloadProgressChanged;
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_client.DownloadFileCompleted += client_DownloadFileCompleted;
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NetworkChange.NetworkAvailabilityChanged += NetworkAvailabilityChanged;
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var credential = TokenManager.GetDownloadCredential(XenAdminConfigManager.Provider);
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_client.Headers.Add("Authorization", $"Basic {credential}");
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int errorCount = 0;
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bool needToRetry = false;
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try
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{
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do
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{
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if (needToRetry)
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Thread.Sleep(SLEEP_TIME_BEFORE_RETRY_MS);
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needToRetry = false;
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_client.Proxy = XenAdminConfigManager.Provider.GetProxyFromSettings(null, false);
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_updateDownloadState = DownloadState.InProgress;
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_client.DownloadFileAsync(_updateUri, outputFileName);
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bool updateDownloadCancelling = false;
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while (_updateDownloadState == DownloadState.InProgress)
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{
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if (!updateDownloadCancelling && (Cancelling || Cancelled))
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{
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Description = Messages.DOWNLOAD_AND_EXTRACT_ACTION_DOWNLOAD_CANCELLED_DESC;
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_client.CancelAsync();
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updateDownloadCancelling = true;
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}
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Thread.Sleep(SLEEP_TIME_TO_CHECK_DOWNLOAD_STATUS_MS);
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}
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if (_updateDownloadState == DownloadState.Cancelled)
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throw new CancelledException();
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if (_updateDownloadState == DownloadState.Error)
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{
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needToRetry = true;
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errorCount++;
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log.ErrorFormat("Failed to download '{0}' (attempt {1} of maximum {2}.",
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_updateUri, errorCount, MAX_NUMBER_OF_TRIES);
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if (_updateDownloadError == null)
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log.Error("An unknown error occurred.");
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else
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log.Error(_updateDownloadError);
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}
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} while (errorCount < MAX_NUMBER_OF_TRIES && needToRetry);
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}
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finally
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{
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LogDescriptionChanges = true;
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_client.DownloadProgressChanged -= client_DownloadProgressChanged;
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_client.DownloadFileCompleted -= client_DownloadFileCompleted;
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NetworkChange.NetworkAvailabilityChanged -= NetworkAvailabilityChanged;
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_client.Dispose();
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}
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//if this is still the case after having retried MAX_NUMBER_OF_TRIES number of times.
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if (_updateDownloadState == DownloadState.Error)
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{
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log.Error($"Giving up; maximum number of retries ({MAX_NUMBER_OF_TRIES}) has been reached.");
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throw _updateDownloadError ?? new Exception(Messages.ERROR_UNKNOWN);
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}
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}
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private void client_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e)
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{
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int pc = (int)(95.0 * e.BytesReceived / e.TotalBytesToReceive);
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var descr = string.Format(Messages.DOWNLOAD_AND_EXTRACT_ACTION_DOWNLOADING_DETAILS_DESC, UpdateName,
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Util.DiskSizeString(e.BytesReceived, "F1"),
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Util.DiskSizeString(e.TotalBytesToReceive));
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ByteProgressDescription = descr;
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Tick(pc, descr);
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}
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private void client_DownloadFileCompleted(object sender, AsyncCompletedEventArgs e)
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{
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if (e.Cancelled && _updateDownloadState == DownloadState.Error)
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{
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log.Debug($"XenServer update '{UpdateName}' download cancelled due to network connectivity issues");
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return;
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}
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if (e.Cancelled)
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{
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_updateDownloadState = DownloadState.Cancelled;
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log.Debug($"XenServer update '{UpdateName}' download cancelled by the user");
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return;
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}
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if (e.Error != null) //failure
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{
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if (e.Error is WebException wex && wex.Response is HttpWebResponse response)
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{
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switch (response.StatusCode)
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{
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case HttpStatusCode.Unauthorized:
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log.Error($"Could not download {UpdateName} (401 Unauthorized). Client ID may be invalid or revoked.");
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_updateDownloadError = new Exception(Messages.FILESERVICE_ERROR_401);
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break;
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case HttpStatusCode.Forbidden:
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log.Error($"Could not download {UpdateName} (403 Forbidden). The account has insufficient permissions.");
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_updateDownloadError = new Exception(Messages.FILESERVICE_ERROR_403);
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break;
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case HttpStatusCode.NotFound:
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log.Error($"Could not download {UpdateName} (404 File not found).");
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_updateDownloadError = new Exception(Messages.FILESERVICE_ERROR_404);
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break;
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default:
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_updateDownloadError = e.Error;
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break;
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}
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}
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else
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{
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_updateDownloadError = e.Error;
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}
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log.Debug($"XenServer patch '{UpdateName}' download failed");
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_updateDownloadState = DownloadState.Error;
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return;
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}
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_updateDownloadState = DownloadState.Completed;
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log.Debug($"XenServer update '{UpdateName}' download completed successfully");
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}
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private void NetworkAvailabilityChanged(object sender, NetworkAvailabilityEventArgs e)
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{
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if (!e.IsAvailable && _client != null && _updateDownloadState == DownloadState.InProgress)
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{
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_updateDownloadError = new WebException(Messages.NETWORK_CONNECTIVITY_ERROR);
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_updateDownloadState = DownloadState.Error;
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_client.CancelAsync();
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}
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}
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protected override void UpdateExtractionProgress(int fileIndex, int totalFileCount)
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{
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PercentComplete = 95 + (int)(5.0 * fileIndex / totalFileCount);
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}
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public override void RecomputeCanCancel()
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{
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CanCancel = !Cancelling && !IsCompleted && _updateDownloadState == DownloadState.InProgress;
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}
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}
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public class UnzipUpdateAction : DownloadUnzipUpdateAction
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{
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private readonly string _zippedUpdatePath;
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public UnzipUpdateAction(string zippedUpdatePath, params string[] updateFileExtensions)
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: base(Path.GetFileNameWithoutExtension(zippedUpdatePath), updateFileExtensions)
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{
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Title = string.Format(Messages.UPDATES_WIZARD_EXTRACT_ACTION_TITLE, zippedUpdatePath);
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_zippedUpdatePath = zippedUpdatePath;
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}
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protected override void Run()
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{
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UpdatePath = ExtractFile(_zippedUpdatePath, false);
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Description = Messages.COMPLETED;
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}
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protected override void UpdateExtractionProgress(int fileIndex, int totalFileCount)
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{
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PercentComplete = (int)(100.0 * fileIndex / totalFileCount);
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}
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public override void RecomputeCanCancel()
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{
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CanCancel = !Cancelling && !IsCompleted;
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}
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}
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}
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