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			509 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			C#
		
	
	
	
	
	
			
		
		
	
	
			509 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			C#
		
	
	
	
	
	
using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Net.Http;
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using System.Runtime.CompilerServices;
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using System.Runtime.Serialization;
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using System.Security.Cryptography;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Common;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Common.Plugins;
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using MediaBrowser.Common.Updates;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Model.Events;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Serialization;
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using MediaBrowser.Model.Updates;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.Updates
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{
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    /// <summary>
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    /// Manages all install, uninstall, and update operations for the system and individual plugins.
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    /// </summary>
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    public class InstallationManager : IInstallationManager
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    {
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        /// <summary>
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        /// The key for a setting that specifies a URL for the plugin repository JSON manifest.
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        /// </summary>
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        public const string PluginManifestUrlKey = "InstallationManager:PluginManifestUrl";
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        /// <summary>
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        /// The logger.
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        /// </summary>
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        private readonly ILogger _logger;
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        private readonly IApplicationPaths _appPaths;
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        private readonly IHttpClient _httpClient;
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        private readonly IJsonSerializer _jsonSerializer;
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        private readonly IServerConfigurationManager _config;
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        private readonly IFileSystem _fileSystem;
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        /// <summary>
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        /// Gets the application host.
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        /// </summary>
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        /// <value>The application host.</value>
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        private readonly IApplicationHost _applicationHost;
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        private readonly IZipClient _zipClient;
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        private readonly IConfiguration _appConfig;
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        private readonly object _currentInstallationsLock = new object();
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        /// <summary>
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        /// The current installations.
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        /// </summary>
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        private readonly List<(InstallationInfo info, CancellationTokenSource token)> _currentInstallations;
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        /// <summary>
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        /// The completed installations.
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        /// </summary>
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        private readonly ConcurrentBag<InstallationInfo> _completedInstallationsInternal;
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        public InstallationManager(
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            ILogger<InstallationManager> logger,
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            IApplicationHost appHost,
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            IApplicationPaths appPaths,
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            IHttpClient httpClient,
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            IJsonSerializer jsonSerializer,
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            IServerConfigurationManager config,
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            IFileSystem fileSystem,
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            IZipClient zipClient,
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            IConfiguration appConfig)
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        {
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            if (logger == null)
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            {
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                throw new ArgumentNullException(nameof(logger));
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            }
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            _currentInstallations = new List<(InstallationInfo, CancellationTokenSource)>();
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            _completedInstallationsInternal = new ConcurrentBag<InstallationInfo>();
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            _logger = logger;
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            _applicationHost = appHost;
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            _appPaths = appPaths;
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            _httpClient = httpClient;
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            _jsonSerializer = jsonSerializer;
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            _config = config;
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            _fileSystem = fileSystem;
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            _zipClient = zipClient;
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            _appConfig = appConfig;
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        }
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        /// <inheritdoc />
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        public event EventHandler<InstallationEventArgs> PackageInstalling;
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        /// <inheritdoc />
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        public event EventHandler<InstallationEventArgs> PackageInstallationCompleted;
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        /// <inheritdoc />
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        public event EventHandler<InstallationFailedEventArgs> PackageInstallationFailed;
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        /// <inheritdoc />
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        public event EventHandler<InstallationEventArgs> PackageInstallationCancelled;
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        /// <inheritdoc />
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        public event EventHandler<GenericEventArgs<IPlugin>> PluginUninstalled;
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        /// <inheritdoc />
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        public event EventHandler<GenericEventArgs<(IPlugin, VersionInfo)>> PluginUpdated;
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        /// <inheritdoc />
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        public event EventHandler<GenericEventArgs<VersionInfo>> PluginInstalled;
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        /// <inheritdoc />
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        public IEnumerable<InstallationInfo> CompletedInstallations => _completedInstallationsInternal;
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        /// <inheritdoc />
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        public async Task<IReadOnlyList<PackageInfo>> GetAvailablePackages(CancellationToken cancellationToken = default)
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        {
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            var manifestUrl = _appConfig.GetValue<string>(PluginManifestUrlKey);
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            try
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            {
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                using (var response = await _httpClient.SendAsync(
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                    new HttpRequestOptions
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                    {
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                        Url = manifestUrl,
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                        CancellationToken = cancellationToken,
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                        CacheMode = CacheMode.Unconditional,
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                        CacheLength = TimeSpan.FromMinutes(3)
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                    },
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                    HttpMethod.Get).ConfigureAwait(false))
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                using (Stream stream = response.Content)
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                {
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                    try
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                    {
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                        return await _jsonSerializer.DeserializeFromStreamAsync<IReadOnlyList<PackageInfo>>(stream).ConfigureAwait(false);
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                    }
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                    catch (SerializationException ex)
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                    {
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                        const string LogTemplate =
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                            "Failed to deserialize the plugin manifest retrieved from {PluginManifestUrl}. If you " +
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                            "have specified a custom plugin repository manifest URL with --plugin-manifest-url or " +
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                            PluginManifestUrlKey + ", please ensure that it is correct.";
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                        _logger.LogError(ex, LogTemplate, manifestUrl);
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                        throw;
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                    }
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                }
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            }
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            catch (UriFormatException ex)
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            {
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                const string LogTemplate =
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                    "The URL configured for the plugin repository manifest URL is not valid: {PluginManifestUrl}. " +
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                    "Please check the URL configured by --plugin-manifest-url or " + PluginManifestUrlKey;
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                _logger.LogError(ex, LogTemplate, manifestUrl);
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                throw;
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            }
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        }
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        /// <inheritdoc />
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        public IEnumerable<PackageInfo> FilterPackages(
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            IEnumerable<PackageInfo> availablePackages,
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            string name = null,
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            Guid guid = default)
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        {
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            if (name != null)
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            {
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                availablePackages = availablePackages.Where(x => x.name.Equals(name, StringComparison.OrdinalIgnoreCase));
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            }
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            if (guid != Guid.Empty)
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            {
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                availablePackages = availablePackages.Where(x => Guid.Parse(x.guid) == guid);
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            }
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            return availablePackages;
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        }
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        /// <inheritdoc />
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        public IEnumerable<VersionInfo> GetCompatibleVersions(
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            IEnumerable<VersionInfo> availableVersions,
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            Version minVersion = null)
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        {
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            var appVer = _applicationHost.ApplicationVersion;
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            availableVersions = availableVersions
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                .Where(x => Version.Parse(x.targetAbi) <= appVer);
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            if (minVersion != null)
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            {
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                availableVersions = availableVersions.Where(x => x.version >= minVersion);
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            }
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            return availableVersions.OrderByDescending(x => x.version);
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        }
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        /// <inheritdoc />
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        public IEnumerable<VersionInfo> GetCompatibleVersions(
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            IEnumerable<PackageInfo> availablePackages,
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            string name = null,
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            Guid guid = default,
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            Version minVersion = null)
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        {
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            var package = FilterPackages(availablePackages, name, guid).FirstOrDefault();
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            // Package not found in repository
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            if (package == null)
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            {
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                return Enumerable.Empty<VersionInfo>();
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            }
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            return GetCompatibleVersions(
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                package.versions,
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                minVersion);
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        }
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        /// <inheritdoc />
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        public async Task<IEnumerable<VersionInfo>> GetAvailablePluginUpdates(CancellationToken cancellationToken = default)
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        {
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            var catalog = await GetAvailablePackages(cancellationToken).ConfigureAwait(false);
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            return GetAvailablePluginUpdates(catalog);
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        }
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        private IEnumerable<VersionInfo> GetAvailablePluginUpdates(IReadOnlyList<PackageInfo> pluginCatalog)
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        {
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            foreach (var plugin in _applicationHost.Plugins)
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            {
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                var compatibleversions = GetCompatibleVersions(pluginCatalog, plugin.Name, plugin.Id, plugin.Version);
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                var version = compatibleversions.FirstOrDefault(y => y.version > plugin.Version);
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                if (version != null && !CompletedInstallations.Any(x => string.Equals(x.Guid, version.guid, StringComparison.OrdinalIgnoreCase)))
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                {
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                    yield return version;
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                }
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            }
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        }
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        /// <inheritdoc />
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        public async Task InstallPackage(VersionInfo package, CancellationToken cancellationToken)
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        {
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            if (package == null)
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            {
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                throw new ArgumentNullException(nameof(package));
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            }
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            var installationInfo = new InstallationInfo
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            {
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                Guid = package.guid,
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                Name = package.name,
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                Version = package.version.ToString()
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            };
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            var innerCancellationTokenSource = new CancellationTokenSource();
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            var tuple = (installationInfo, innerCancellationTokenSource);
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            // Add it to the in-progress list
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            lock (_currentInstallationsLock)
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            {
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                _currentInstallations.Add(tuple);
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            }
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            var linkedToken = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, innerCancellationTokenSource.Token).Token;
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            var installationEventArgs = new InstallationEventArgs
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            {
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                InstallationInfo = installationInfo,
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                VersionInfo = package
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            };
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            PackageInstalling?.Invoke(this, installationEventArgs);
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            try
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            {
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                await InstallPackageInternal(package, linkedToken).ConfigureAwait(false);
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                lock (_currentInstallationsLock)
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                {
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                    _currentInstallations.Remove(tuple);
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                }
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                _completedInstallationsInternal.Add(installationInfo);
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                PackageInstallationCompleted?.Invoke(this, installationEventArgs);
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            }
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            catch (OperationCanceledException)
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            {
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                lock (_currentInstallationsLock)
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                {
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                    _currentInstallations.Remove(tuple);
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                }
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                _logger.LogInformation("Package installation cancelled: {0} {1}", package.name, package.version);
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                PackageInstallationCancelled?.Invoke(this, installationEventArgs);
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                throw;
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            }
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            catch (Exception ex)
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            {
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                _logger.LogError(ex, "Package installation failed");
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                lock (_currentInstallationsLock)
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                {
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                    _currentInstallations.Remove(tuple);
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                }
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                PackageInstallationFailed?.Invoke(this, new InstallationFailedEventArgs
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                {
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                    InstallationInfo = installationInfo,
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                    Exception = ex
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                });
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                throw;
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            }
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            finally
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            {
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                // Dispose the progress object and remove the installation from the in-progress list
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                tuple.innerCancellationTokenSource.Dispose();
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            }
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        }
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        /// <summary>
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        /// Installs the package internal.
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        /// </summary>
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        /// <param name="package">The package.</param>
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        /// <param name="cancellationToken">The cancellation token.</param>
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        /// <returns><see cref="Task" />.</returns>
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        private async Task InstallPackageInternal(VersionInfo package, CancellationToken cancellationToken)
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        {
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            // Set last update time if we were installed before
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            IPlugin plugin = _applicationHost.Plugins.FirstOrDefault(p => string.Equals(p.Id.ToString(), package.guid, StringComparison.OrdinalIgnoreCase))
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                           ?? _applicationHost.Plugins.FirstOrDefault(p => p.Name.Equals(package.name, StringComparison.OrdinalIgnoreCase));
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            // Do the install
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            await PerformPackageInstallation(package, cancellationToken).ConfigureAwait(false);
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            // Do plugin-specific processing
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            if (plugin == null)
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            {
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                _logger.LogInformation("New plugin installed: {0} {1} {2}", package.name, package.version);
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                PluginInstalled?.Invoke(this, new GenericEventArgs<VersionInfo>(package));
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            }
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            else
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            {
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                _logger.LogInformation("Plugin updated: {0} {1} {2}", package.name, package.version);
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                PluginUpdated?.Invoke(this, new GenericEventArgs<(IPlugin, VersionInfo)>((plugin, package)));
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            }
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            _applicationHost.NotifyPendingRestart();
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        }
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        private async Task PerformPackageInstallation(VersionInfo package, CancellationToken cancellationToken)
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        {
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            var extension = Path.GetExtension(package.filename);
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            if (!string.Equals(extension, ".zip", StringComparison.OrdinalIgnoreCase))
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            {
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                _logger.LogError("Only zip packages are supported. {Filename} is not a zip archive.", package.filename);
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                return;
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            }
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            // Always override the passed-in target (which is a file) and figure it out again
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            string targetDir = Path.Combine(_appPaths.PluginsPath, package.name);
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            // CA5351: Do Not Use Broken Cryptographic Algorithms
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#pragma warning disable CA5351
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            using (var res = await _httpClient.SendAsync(
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                new HttpRequestOptions
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                {
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                    Url = package.sourceUrl,
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                    CancellationToken = cancellationToken,
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                    // We need it to be buffered for setting the position
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                    BufferContent = true
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                },
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                HttpMethod.Get).ConfigureAwait(false))
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            using (var stream = res.Content)
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            using (var md5 = MD5.Create())
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            {
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                cancellationToken.ThrowIfCancellationRequested();
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                var hash = Hex.Encode(md5.ComputeHash(stream));
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                if (!string.Equals(package.checksum, hash, StringComparison.OrdinalIgnoreCase))
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                {
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                    _logger.LogError(
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                        "The checksums didn't match while installing {Package}, expected: {Expected}, got: {Received}",
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                        package.name,
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                        package.checksum,
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                        hash);
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                    throw new InvalidDataException("The checksum of the received data doesn't match.");
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                }
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                if (Directory.Exists(targetDir))
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                {
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                    Directory.Delete(targetDir, true);
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                }
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                stream.Position = 0;
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                _zipClient.ExtractAllFromZip(stream, targetDir, true);
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            }
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#pragma warning restore CA5351
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        }
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        /// <summary>
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        /// Uninstalls a plugin.
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        /// </summary>
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        /// <param name="plugin">The plugin.</param>
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        public void UninstallPlugin(IPlugin plugin)
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        {
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            plugin.OnUninstalling();
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            // Remove it the quick way for now
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            _applicationHost.RemovePlugin(plugin);
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            var path = plugin.AssemblyFilePath;
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            bool isDirectory = false;
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            // Check if we have a plugin directory we should remove too
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            if (Path.GetDirectoryName(plugin.AssemblyFilePath) != _appPaths.PluginsPath)
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            {
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                path = Path.GetDirectoryName(plugin.AssemblyFilePath);
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                isDirectory = true;
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            }
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            // Make this case-insensitive to account for possible incorrect assembly naming
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            var file = _fileSystem.GetFilePaths(Path.GetDirectoryName(path))
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                .FirstOrDefault(i => string.Equals(i, path, StringComparison.OrdinalIgnoreCase));
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            if (!string.IsNullOrWhiteSpace(file))
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            {
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                path = file;
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            }
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            if (isDirectory)
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            {
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                _logger.LogInformation("Deleting plugin directory {0}", path);
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                Directory.Delete(path, true);
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            }
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            else
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            {
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                _logger.LogInformation("Deleting plugin file {0}", path);
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                _fileSystem.DeleteFile(path);
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            }
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            var list = _config.Configuration.UninstalledPlugins.ToList();
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            var filename = Path.GetFileName(path);
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            if (!list.Contains(filename, StringComparer.OrdinalIgnoreCase))
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            {
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                list.Add(filename);
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                _config.Configuration.UninstalledPlugins = list.ToArray();
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                _config.SaveConfiguration();
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            }
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            PluginUninstalled?.Invoke(this, new GenericEventArgs<IPlugin> { Argument = plugin });
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            _applicationHost.NotifyPendingRestart();
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        }
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        /// <inheritdoc/>
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        public bool CancelInstallation(Guid id)
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        {
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            lock (_currentInstallationsLock)
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            {
 | 
						|
                var install = _currentInstallations.Find(x => x.info.Guid == id.ToString());
 | 
						|
                if (install == default((InstallationInfo, CancellationTokenSource)))
 | 
						|
                {
 | 
						|
                    return false;
 | 
						|
                }
 | 
						|
 | 
						|
                install.token.Cancel();
 | 
						|
                _currentInstallations.Remove(install);
 | 
						|
                return true;
 | 
						|
            }
 | 
						|
        }
 | 
						|
 | 
						|
        /// <inheritdoc />
 | 
						|
        public void Dispose()
 | 
						|
        {
 | 
						|
            Dispose(true);
 | 
						|
            GC.SuppressFinalize(this);
 | 
						|
        }
 | 
						|
 | 
						|
        /// <summary>
 | 
						|
        /// Releases unmanaged and - optionally - managed resources.
 | 
						|
        /// </summary>
 | 
						|
        /// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
 | 
						|
        protected virtual void Dispose(bool dispose)
 | 
						|
        {
 | 
						|
            if (dispose)
 | 
						|
            {
 | 
						|
                lock (_currentInstallationsLock)
 | 
						|
                {
 | 
						|
                    foreach (var tuple in _currentInstallations)
 | 
						|
                    {
 | 
						|
                        tuple.token.Dispose();
 | 
						|
                    }
 | 
						|
 | 
						|
                    _currentInstallations.Clear();
 | 
						|
                }
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
}
 |