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jellyfin/RSSDP/SsdpDevice.cs

356 lines
14 KiB

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Globalization;
using Rssdp.Infrastructure;
namespace Rssdp
{
/// <summary>
/// Base class representing the common details of a (root or embedded) device, either to be published or that has been located.
/// </summary>
/// <remarks>
/// <para>Do not derive new types directly from this class. New device classes should derive from either <see cref="SsdpRootDevice"/> or <see cref="SsdpEmbeddedDevice"/>.</para>
/// </remarks>
/// <seealso cref="SsdpRootDevice"/>
/// <seealso cref="SsdpEmbeddedDevice"/>
public abstract class SsdpDevice
{
private string _Udn;
private string _DeviceType;
private string _DeviceTypeNamespace;
private int _DeviceVersion;
private IList<SsdpDevice> _Devices;
/// <summary>
/// Raised when a new child device is added.
/// </summary>
/// <seealso cref="AddDevice"/>
/// <seealso cref="DeviceAdded"/>
public event EventHandler<DeviceEventArgs> DeviceAdded;
/// <summary>
/// Raised when a child device is removed.
/// </summary>
/// <seealso cref="RemoveDevice"/>
/// <seealso cref="DeviceRemoved"/>
public event EventHandler<DeviceEventArgs> DeviceRemoved;
/// <summary>
/// Derived type constructor, allows constructing a device with no parent. Should only be used from derived types that are or inherit from <see cref="SsdpRootDevice"/>.
/// </summary>
protected SsdpDevice()
{
_DeviceTypeNamespace = SsdpConstants.UpnpDeviceTypeNamespace;
_DeviceType = SsdpConstants.UpnpDeviceTypeBasicDevice;
_DeviceVersion = 1;
_Devices = new List<SsdpDevice>();
this.Devices = new ReadOnlyCollection<SsdpDevice>(_Devices);
}
public SsdpRootDevice ToRootDevice()
{
var device = this;
var rootDevice = device as SsdpRootDevice;
if (rootDevice == null)
{
rootDevice = ((SsdpEmbeddedDevice)device).RootDevice;
}
return rootDevice;
}
/// <summary>
/// Sets or returns the core device type (not including namespace, version etc.). Required.
/// </summary>
/// <remarks><para>Defaults to the UPnP basic device type.</para></remarks>
/// <seealso cref="DeviceTypeNamespace"/>
/// <seealso cref="DeviceVersion"/>
/// <seealso cref="FullDeviceType"/>
public string DeviceType
{
get
{
return _DeviceType;
}
set
{
_DeviceType = value;
}
}
public string DeviceClass { get; set; }
/// <summary>
/// Sets or returns the namespace for the <see cref="DeviceType"/> of this device. Optional, but defaults to UPnP schema so should be changed if <see cref="DeviceType"/> is not a UPnP device type.
/// </summary>
/// <remarks><para>Defaults to the UPnP standard namespace.</para></remarks>
/// <seealso cref="DeviceType"/>
/// <seealso cref="DeviceVersion"/>
/// <seealso cref="FullDeviceType"/>
public string DeviceTypeNamespace
{
get
{
return _DeviceTypeNamespace;
}
set
{
_DeviceTypeNamespace = value;
}
}
/// <summary>
/// Sets or returns the version of the device type. Optional, defaults to 1.
/// </summary>
/// <remarks><para>Defaults to a value of 1.</para></remarks>
/// <seealso cref="DeviceType"/>
/// <seealso cref="DeviceTypeNamespace"/>
/// <seealso cref="FullDeviceType"/>
public int DeviceVersion
{
get
{
return _DeviceVersion;
}
set
{
_DeviceVersion = value;
}
}
/// <summary>
/// Returns the full device type string.
/// </summary>
/// <remarks>
/// <para>The format used is urn:<see cref="DeviceTypeNamespace"/>:device:<see cref="DeviceType"/>:<see cref="DeviceVersion"/></para>
/// </remarks>
public string FullDeviceType
{
get
{
return String.Format(
CultureInfo.InvariantCulture,
"urn:{0}:{3}:{1}:{2}",
this.DeviceTypeNamespace ?? String.Empty,
this.DeviceType ?? String.Empty,
this.DeviceVersion,
this.DeviceClass ?? "device");
}
}
/// <summary>
/// Sets or returns the universally unique identifier for this device (without the uuid: prefix). Required.
/// </summary>
/// <remarks>
/// <para>Must be the same over time for a specific device instance (i.e. must survive reboots).</para>
/// <para>For UPnP 1.0 this can be any unique string. For UPnP 1.1 this should be a 128 bit number formatted in a specific way, preferably generated using the time and MAC based algorithm. See section 1.1.4 of http://upnp.org/specs/arch/UPnP-arch-DeviceArchitecture-v1.1.pdf for details.</para>
/// <para>Technically this library implements UPnP 1.0, so any value is allowed, but we advise using UPnP 1.1 compatible values for good behaviour and forward compatibility with future versions.</para>
/// </remarks>
public string Uuid { get; set; }
/// <summary>
/// Returns (or sets*) a unique device name for this device. Optional, not recommended to be explicitly set.
/// </summary>
/// <remarks>
/// <para>* In general you should not explicitly set this property. If it is not set (or set to null/empty string) the property will return a UDN value that is correct as per the UPnP specification, based on the other device properties.</para>
/// <para>The setter is provided to allow for devices that do not correctly follow the specification (when we discover them), rather than to intentionally deviate from the specification.</para>
/// <para>If a value is explicitly set, it is used verbatim, and so any prefix (such as uuid:) must be provided in the value.</para>
/// </remarks>
public string Udn
{
get
{
if (String.IsNullOrEmpty(_Udn) && !String.IsNullOrEmpty(this.Uuid))
{
return "uuid:" + this.Uuid;
}
return _Udn;
}
set
{
_Udn = value;
}
}
/// <summary>
/// Sets or returns a friendly/display name for this device on the network. Something the user can identify the device/instance by, i.e Lounge Main Light. Required.
/// </summary>
/// <remarks><para>A short description for the end user. </para></remarks>
public string FriendlyName { get; set; }
/// <summary>
/// Sets or returns the name of the manufacturer of this device. Required.
/// </summary>
public string Manufacturer { get; set; }
/// <summary>
/// Sets or returns a URL to the manufacturers web site. Optional.
/// </summary>
public Uri ManufacturerUrl { get; set; }
/// <summary>
/// Sets or returns a description of this device model. Recommended.
/// </summary>
/// <remarks><para>A long description for the end user.</para></remarks>
public string ModelDescription { get; set; }
/// <summary>
/// Sets or returns the name of this model. Required.
/// </summary>
public string ModelName { get; set; }
/// <summary>
/// Sets or returns the number of this model. Recommended.
/// </summary>
public string ModelNumber { get; set; }
/// <summary>
/// Sets or returns a URL to a web page with details of this device model. Optional.
/// </summary>
/// <remarks>
/// <para>Optional. May be relative to base URL.</para>
/// </remarks>
public Uri ModelUrl { get; set; }
/// <summary>
/// Sets or returns the serial number for this device. Recommended.
/// </summary>
public string SerialNumber { get; set; }
/// <summary>
/// Sets or returns the universal product code of the device, if any. Optional.
/// </summary>
/// <remarks>
/// <para>If not blank, must be exactly 12 numeric digits.</para>
/// </remarks>
public string Upc { get; set; }
/// <summary>
/// Sets or returns the URL to a web page that can be used to configure/manager/use the device. Recommended.
/// </summary>
/// <remarks>
/// <para>May be relative to base URL. </para>
/// </remarks>
public Uri PresentationUrl { get; set; }
/// <summary>
/// Returns a read-only enumerable set of <see cref="SsdpDevice"/> objects representing children of this device. Child devices are optional.
/// </summary>
/// <seealso cref="AddDevice"/>
/// <seealso cref="RemoveDevice"/>
public IList<SsdpDevice> Devices
{
get;
private set;
}
/// <summary>
/// Adds a child device to the <see cref="Devices"/> collection.
/// </summary>
/// <param name="device">The <see cref="SsdpEmbeddedDevice"/> instance to add.</param>
/// <remarks>
/// <para>If the device is already a member of the <see cref="Devices"/> collection, this method does nothing.</para>
/// <para>Also sets the <see cref="SsdpEmbeddedDevice.RootDevice"/> property of the added device and all descendant devices to the relevant <see cref="SsdpRootDevice"/> instance.</para>
/// </remarks>
/// <exception cref="ArgumentNullException">Thrown if the <paramref name="device"/> argument is null.</exception>
/// <exception cref="InvalidOperationException">Thrown if the <paramref name="device"/> is already associated with a different <see cref="SsdpRootDevice"/> instance than used in this tree. Can occur if you try to add the same device instance to more than one tree. Also thrown if you try to add a device to itself.</exception>
/// <seealso cref="DeviceAdded"/>
public void AddDevice(SsdpEmbeddedDevice device)
{
if (device == null)
{
throw new ArgumentNullException(nameof(device));
}
if (device.RootDevice != null && device.RootDevice != this.ToRootDevice())
{
throw new InvalidOperationException("This device is already associated with a different root device (has been added as a child in another branch).");
}
if (device == this)
{
throw new InvalidOperationException("Can't add device to itself.");
}
bool wasAdded = false;
lock (_Devices)
{
device.RootDevice = this.ToRootDevice();
_Devices.Add(device);
wasAdded = true;
}
if (wasAdded)
{
OnDeviceAdded(device);
}
}
/// <summary>
/// Removes a child device from the <see cref="Devices"/> collection.
/// </summary>
/// <param name="device">The <see cref="SsdpEmbeddedDevice"/> instance to remove.</param>
/// <remarks>
/// <para>If the device is not a member of the <see cref="Devices"/> collection, this method does nothing.</para>
/// <para>Also sets the <see cref="SsdpEmbeddedDevice.RootDevice"/> property to null for the removed device and all descendant devices.</para>
/// </remarks>
/// <exception cref="ArgumentNullException">Thrown if the <paramref name="device"/> argument is null.</exception>
/// <seealso cref="DeviceRemoved"/>
public void RemoveDevice(SsdpEmbeddedDevice device)
{
if (device == null)
{
throw new ArgumentNullException(nameof(device));
}
bool wasRemoved = false;
lock (_Devices)
{
wasRemoved = _Devices.Remove(device);
if (wasRemoved)
{
device.RootDevice = null;
}
}
if (wasRemoved)
{
OnDeviceRemoved(device);
}
}
/// <summary>
/// Raises the <see cref="DeviceAdded"/> event.
/// </summary>
/// <param name="device">The <see cref="SsdpEmbeddedDevice"/> instance added to the <see cref="Devices"/> collection.</param>
/// <seealso cref="AddDevice"/>
/// <seealso cref="DeviceAdded"/>
protected virtual void OnDeviceAdded(SsdpEmbeddedDevice device)
{
var handlers = this.DeviceAdded;
handlers?.Invoke(this, new DeviceEventArgs(device));
}
/// <summary>
/// Raises the <see cref="DeviceRemoved"/> event.
/// </summary>
/// <param name="device">The <see cref="SsdpEmbeddedDevice"/> instance removed from the <see cref="Devices"/> collection.</param>
/// <seealso cref="RemoveDevice"/>
/// <see cref="DeviceRemoved"/>
protected virtual void OnDeviceRemoved(SsdpEmbeddedDevice device)
{
var handlers = this.DeviceRemoved;
handlers?.Invoke(this, new DeviceEventArgs(device));
}
}
}