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ConfigFileProvider.cs
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ConfigFileProvider.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Xml;
using System.Xml.Linq;
using NzbDrone.Common.Cache;
using NzbDrone.Common.Disk;
using NzbDrone.Common.EnvironmentInfo;
using NzbDrone.Common.Extensions;
using NzbDrone.Core.Authentication;
using NzbDrone.Core.Configuration.Events;
using NzbDrone.Core.Lifecycle;
using NzbDrone.Core.Messaging.Commands;
using NzbDrone.Core.Messaging.Events;
using NzbDrone.Core.Update;
namespace NzbDrone.Core.Configuration
{
public interface IConfigFileProvider : IHandleAsync<ApplicationStartedEvent>,
IExecute<ResetApiKeyCommand>
{
Dictionary<string, object> GetConfigDictionary();
void SaveConfigDictionary(Dictionary<string, object> configValues);
string BindAddress { get; }
int Port { get; }
int SslPort { get; }
bool EnableSsl { get; }
bool LaunchBrowser { get; }
AuthenticationType AuthenticationMethod { get; }
bool AnalyticsEnabled { get; }
string LogLevel { get; }
string ConsoleLogLevel { get; }
bool LogSql { get; }
int LogRotate { get; }
bool FilterSentryEvents { get; }
string Branch { get; }
string ApiKey { get; }
string SslCertPath { get; }
string SslCertPassword { get; }
string UrlBase { get; }
string UiFolder { get; }
string InstanceName { get; }
bool UpdateAutomatically { get; }
UpdateMechanism UpdateMechanism { get; }
string UpdateScriptPath { get; }
string SyslogServer { get; }
int SyslogPort { get; }
string SyslogLevel { get; }
}
public class ConfigFileProvider : IConfigFileProvider
{
public const string CONFIG_ELEMENT_NAME = "Config";
private readonly IEventAggregator _eventAggregator;
private readonly IDiskProvider _diskProvider;
private readonly ICached<string> _cache;
private readonly string _configFile;
private static readonly object Mutex = new object();
public ConfigFileProvider(IAppFolderInfo appFolderInfo,
ICacheManager cacheManager,
IEventAggregator eventAggregator,
IDiskProvider diskProvider)
{
_cache = cacheManager.GetCache<string>(GetType());
_eventAggregator = eventAggregator;
_diskProvider = diskProvider;
_configFile = appFolderInfo.GetConfigPath();
}
public Dictionary<string, object> GetConfigDictionary()
{
var dict = new Dictionary<string, object>(StringComparer.InvariantCultureIgnoreCase);
var type = GetType();
var properties = type.GetProperties();
foreach (var propertyInfo in properties)
{
var value = propertyInfo.GetValue(this, null);
dict.Add(propertyInfo.Name, value);
}
return dict;
}
public void SaveConfigDictionary(Dictionary<string, object> configValues)
{
_cache.Clear();
var allWithDefaults = GetConfigDictionary();
foreach (var configValue in configValues)
{
if (configValue.Key.Equals("ApiKey", StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
object currentValue;
allWithDefaults.TryGetValue(configValue.Key, out currentValue);
if (currentValue == null)
{
continue;
}
var equal = configValue.Value.ToString().Equals(currentValue.ToString());
if (!equal)
{
SetValue(configValue.Key.FirstCharToUpper(), configValue.Value.ToString());
}
}
_eventAggregator.PublishEvent(new ConfigFileSavedEvent());
}
public string BindAddress
{
get
{
const string defaultValue = "*";
string bindAddress = GetValue("BindAddress", defaultValue);
if (string.IsNullOrWhiteSpace(bindAddress))
{
return defaultValue;
}
return bindAddress;
}
}
public int Port => GetValueInt("Port", 8686);
public int SslPort => GetValueInt("SslPort", 6868);
public bool EnableSsl => GetValueBoolean("EnableSsl", false);
public bool LaunchBrowser => GetValueBoolean("LaunchBrowser", true);
public string ApiKey
{
get
{
var apiKey = GetValue("ApiKey", GenerateApiKey());
if (apiKey.IsNullOrWhiteSpace())
{
apiKey = GenerateApiKey();
SetValue("ApiKey", apiKey);
}
return apiKey;
}
}
public AuthenticationType AuthenticationMethod
{
get
{
var enabled = GetValueBoolean("AuthenticationEnabled", false, false);
if (enabled)
{
SetValue("AuthenticationMethod", AuthenticationType.Basic);
return AuthenticationType.Basic;
}
return GetValueEnum("AuthenticationMethod", AuthenticationType.None);
}
}
public bool AnalyticsEnabled => GetValueBoolean("AnalyticsEnabled", true, persist: false);
public string Branch => GetValue("Branch", "master").ToLowerInvariant();
public string LogLevel => GetValue("LogLevel", "info");
public string ConsoleLogLevel => GetValue("ConsoleLogLevel", string.Empty, persist: false);
public bool LogSql => GetValueBoolean("LogSql", false, persist: false);
public int LogRotate => GetValueInt("LogRotate", 50, persist: false);
public bool FilterSentryEvents => GetValueBoolean("FilterSentryEvents", true, persist: false);
public string SslCertPath => GetValue("SslCertPath", "");
public string SslCertPassword => GetValue("SslCertPassword", "");
public string UrlBase
{
get
{
var urlBase = GetValue("UrlBase", "").Trim('/');
if (urlBase.IsNullOrWhiteSpace())
{
return urlBase;
}
return "/" + urlBase.Trim('/').ToLower();
}
}
public string UiFolder => BuildInfo.IsDebug ? Path.Combine("..", "UI") : "UI";
public string InstanceName => GetValue("InstanceName", BuildInfo.AppName);
public bool UpdateAutomatically => GetValueBoolean("UpdateAutomatically", false, false);
public UpdateMechanism UpdateMechanism => GetValueEnum("UpdateMechanism", UpdateMechanism.BuiltIn, false);
public string UpdateScriptPath => GetValue("UpdateScriptPath", "", false);
public string SyslogServer => GetValue("SyslogServer", "", persist: false);
public int SyslogPort => GetValueInt("SyslogPort", 514, persist: false);
public string SyslogLevel => GetValue("SyslogLevel", LogLevel, false).ToLowerInvariant();
public int GetValueInt(string key, int defaultValue, bool persist = true)
{
return Convert.ToInt32(GetValue(key, defaultValue, persist));
}
public bool GetValueBoolean(string key, bool defaultValue, bool persist = true)
{
return Convert.ToBoolean(GetValue(key, defaultValue, persist));
}
public T GetValueEnum<T>(string key, T defaultValue, bool persist = true)
{
return (T)Enum.Parse(typeof(T), GetValue(key, defaultValue), persist);
}
public string GetValue(string key, object defaultValue, bool persist = true)
{
return _cache.Get(key, () =>
{
var xDoc = LoadConfigFile();
var config = xDoc.Descendants(CONFIG_ELEMENT_NAME).Single();
var parentContainer = config;
var valueHolder = parentContainer.Descendants(key).ToList();
if (valueHolder.Count() == 1)
{
return valueHolder.First().Value.Trim();
}
//Save the value
if (persist)
{
SetValue(key, defaultValue);
}
//return the default value
return defaultValue.ToString();
});
}
public void SetValue(string key, object value)
{
var valueString = value.ToString().Trim();
var xDoc = LoadConfigFile();
var config = xDoc.Descendants(CONFIG_ELEMENT_NAME).Single();
var parentContainer = config;
var keyHolder = parentContainer.Descendants(key);
if (keyHolder.Count() != 1)
{
parentContainer.Add(new XElement(key, valueString));
}
else
{
parentContainer.Descendants(key).Single().Value = valueString;
}
_cache.Set(key, valueString);
SaveConfigFile(xDoc);
}
public void SetValue(string key, Enum value)
{
SetValue(key, value.ToString().ToLower());
}
private void EnsureDefaultConfigFile()
{
if (!File.Exists(_configFile))
{
SaveConfigDictionary(GetConfigDictionary());
}
}
private void DeleteOldValues()
{
var xDoc = LoadConfigFile();
var config = xDoc.Descendants(CONFIG_ELEMENT_NAME).Single();
var type = GetType();
var properties = type.GetProperties();
foreach (var configValue in config.Descendants().ToList())
{
var name = configValue.Name.LocalName;
if (!properties.Any(p => p.Name == name))
{
config.Descendants(name).Remove();
}
}
SaveConfigFile(xDoc);
}
private XDocument LoadConfigFile()
{
try
{
lock (Mutex)
{
if (_diskProvider.FileExists(_configFile))
{
var contents = _diskProvider.ReadAllText(_configFile);
if (contents.IsNullOrWhiteSpace())
{
throw new InvalidConfigFileException($"{_configFile} is empty. Please delete the config file and Lidarr will recreate it.");
}
if (contents.All(char.IsControl))
{
throw new InvalidConfigFileException($"{_configFile} is corrupt. Please delete the config file and Lidarr will recreate it.");
}
return XDocument.Parse(_diskProvider.ReadAllText(_configFile));
}
var xDoc = new XDocument(new XDeclaration("1.0", "utf-8", "yes"));
xDoc.Add(new XElement(CONFIG_ELEMENT_NAME));
return xDoc;
}
}
catch (XmlException ex)
{
throw new InvalidConfigFileException($"{_configFile} is corrupt is invalid. Please delete the config file and Lidarr will recreate it.", ex);
}
catch (UnauthorizedAccessException ex)
{
throw new AccessDeniedConfigFileException($"Lidarr does not have access to config file: {_configFile}. Please fix permissions", ex);
}
}
private void SaveConfigFile(XDocument xDoc)
{
try
{
lock (Mutex)
{
_diskProvider.WriteAllText(_configFile, xDoc.ToString());
}
}
catch (UnauthorizedAccessException ex)
{
throw new AccessDeniedConfigFileException($"Lidarr does not have access to config file: {_configFile}. Please fix permissions", ex);
}
}
private string GenerateApiKey()
{
return Guid.NewGuid().ToString().Replace("-", "");
}
public void HandleAsync(ApplicationStartedEvent message)
{
EnsureDefaultConfigFile();
DeleteOldValues();
}
public void Execute(ResetApiKeyCommand message)
{
SetValue("ApiKey", GenerateApiKey());
}
}
}