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Simplify code

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pull/8147/head
Shadowghost 2 years ago
parent 8075cb4e99
commit 2d3a16ad0f
2 changed files with 72 additions and 197 deletions
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267
Jellyfin.Networking/Manager/NetworkManager.cs
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@ -25,11 +25,6 @@ namespace Jellyfin.Networking.Manager
/// </summary>
private readonly object _initLock;
/// <summary>
/// Dictionary containing interface addresses and their subnets.
/// </summary>
private readonly List<IPData> _interfaces;
/// <summary>
/// List of all interface MAC addresses.
/// </summary>
@ -53,6 +48,11 @@ namespace Jellyfin.Networking.Manager
/// </summary>
private bool _eventfire;
/// <summary>
/// Dictionary containing interface addresses and their subnets.
/// </summary>
private List<IPData> _interfaces;
/// <summary>
/// Unfiltered user defined LAN subnets (<see cref="NetworkConfiguration.LocalNetworkSubnets"/>)
/// or internal interface network subnets if undefined by user.
@ -64,16 +64,6 @@ namespace Jellyfin.Networking.Manager
/// </summary>
private List<IPNetwork> _excludedSubnets;
/// <summary>
/// List of interfaces to bind to.
/// </summary>
private List<IPAddress> _bindAddresses;
/// <summary>
/// List of interface addresses to exclude from bind.
/// </summary>
private List<IPAddress> _bindExclusions;
/// <summary>
/// True if this object is disposed.
/// </summary>
@ -190,9 +180,10 @@ namespace Jellyfin.Networking.Manager
try
{
await Task.Delay(2000).ConfigureAwait(false);
var networkConfig = _configurationManager.GetNetworkConfiguration();
InitialiseLan(networkConfig);
InitialiseInterfaces();
// Recalculate LAN caches.
InitialiseLan(_configurationManager.GetNetworkConfiguration());
EnforceBindRestrictions(networkConfig);
NetworkChanged?.Invoke(this, EventArgs.Empty);
}
@ -217,7 +208,7 @@ namespace Jellyfin.Networking.Manager
try
{
IEnumerable<NetworkInterface> nics = NetworkInterface.GetAllNetworkInterfaces()
var nics = NetworkInterface.GetAllNetworkInterfaces()
.Where(i => i.SupportsMulticast && i.OperationalStatus == OperationalStatus.Up);
foreach (NetworkInterface adapter in nics)
@ -270,33 +261,7 @@ namespace Jellyfin.Networking.Manager
_logger.LogError(ex, "Error obtaining interfaces.");
}
// If for some reason we don't have an interface info, resolve the DNS name.
if (_interfaces.Count == 0)
{
_logger.LogError("No interfaces information available. Resolving DNS name.");
var hostName = Dns.GetHostName();
if (Uri.CheckHostName(hostName).Equals(UriHostNameType.Dns))
{
try
{
IPHostEntry hip = Dns.GetHostEntry(hostName);
foreach (var address in hip.AddressList)
{
_interfaces.Add(new IPData(address, null));
}
}
catch (SocketException ex)
{
// Log and then ignore socket errors, as the result value will just be an empty array.
_logger.LogWarning("GetHostEntryAsync failed with {Message}.", ex.Message);
}
}
if (_interfaces.Count == 0)
{
_logger.LogWarning("No interfaces information available. Using loopback.");
}
}
_logger.LogWarning("No interfaces information available. Using loopback.");
if (IsIpv4Enabled && !IsIpv6Enabled)
{
@ -354,55 +319,46 @@ namespace Jellyfin.Networking.Manager
}
/// <summary>
/// Initialises the network bind addresses.
/// Enforce bind addresses and exclusions on available interfaces.
/// </summary>
private void InitialiseBind(NetworkConfiguration config)
private void EnforceBindRestrictions(NetworkConfiguration config)
{
lock (_initLock)
{
// Use explicit bind addresses
if (config.LocalNetworkAddresses.Length > 0)
// Respect explicit bind addresses
var localNetworkAddresses = config.LocalNetworkAddresses;
if (localNetworkAddresses.Length > 0 && !string.IsNullOrWhiteSpace(localNetworkAddresses.First()))
{
_bindAddresses = config.LocalNetworkAddresses.Select(p => IPAddress.TryParse(p, out var addresses)
var bindAddresses = config.LocalNetworkAddresses.Select(p => IPAddress.TryParse(p, out var addresses)
? addresses
: (_interfaces.Where(x => x.Name.Equals(p, StringComparison.OrdinalIgnoreCase)).Select(x => x.Address).FirstOrDefault() ?? IPAddress.None)).ToList();
_bindAddresses.RemoveAll(x => x == IPAddress.None);
: (_interfaces.Where(x => x.Name.Equals(p, StringComparison.OrdinalIgnoreCase))
.Select(x => x.Address)
.FirstOrDefault() ?? IPAddress.None))
.ToList();
bindAddresses.RemoveAll(x => x == IPAddress.None);
_interfaces = _interfaces.Where(x => bindAddresses.Contains(x.Address)).ToList();
}
else
{
// Use all addresses from all interfaces
_bindAddresses = _interfaces.Select(x => x.Address).ToList();
}
_bindExclusions = new List<IPAddress>();
// Add all interfaces matching any virtual machine interface prefix to _bindExclusions
// Remove all interfaces matching any virtual machine interface prefix
if (config.IgnoreVirtualInterfaces)
{
// Remove potentially exisiting * and split config string into prefixes
var virtualInterfacePrefixes = config.VirtualInterfaceNames.Replace("*", string.Empty, StringComparison.OrdinalIgnoreCase).ToLowerInvariant().Split(',');
var virtualInterfacePrefixes = config.VirtualInterfaceNames
.Replace("*", string.Empty, StringComparison.OrdinalIgnoreCase)
.ToLowerInvariant()
.Split(',');
// Check all interfaces for matches against the prefixes and add the interface IPs to _bindExclusions
if (_bindAddresses.Count > 0 && virtualInterfacePrefixes.Length > 0)
// Check all interfaces for matches against the prefixes and remove them
if (_interfaces.Count > 0 && virtualInterfacePrefixes.Length > 0)
{
var localInterfaces = _interfaces.ToList();
foreach (var virtualInterfacePrefix in virtualInterfacePrefixes)
{
var excludedInterfaceIps = localInterfaces.Where(intf => intf.Name.StartsWith(virtualInterfacePrefix, StringComparison.OrdinalIgnoreCase))
.Select(intf => intf.Address);
foreach (var interfaceIp in excludedInterfaceIps)
{
_bindExclusions.Add(interfaceIp);
}
_interfaces.RemoveAll(x => x.Name.StartsWith(virtualInterfacePrefix, StringComparison.OrdinalIgnoreCase));
}
}
}
// Remove all excluded addresses from _bindAddresses
_bindAddresses.RemoveAll(x => _bindExclusions.Contains(x));
_logger.LogInformation("Using bind addresses: {0}", _bindAddresses);
_logger.LogInformation("Using bind exclusions: {0}", _bindExclusions);
_logger.LogInformation("Using bind addresses: {0}", _interfaces.Select(x => x.Address));
}
}
@ -477,7 +433,7 @@ namespace Jellyfin.Networking.Manager
_publishedServerUrls[data] = replacement;
}
else if (TryParseInterface(parts[0], out var ifaces))
else if (TryParseInterface(ipParts[0], out var ifaces))
{
foreach (var iface in ifaces)
{
@ -509,6 +465,9 @@ namespace Jellyfin.Networking.Manager
{
NetworkConfiguration config = (NetworkConfiguration)configuration ?? throw new ArgumentNullException(nameof(configuration));
InitialiseLan(config);
InitialiseRemote(config);
if (string.IsNullOrEmpty(MockNetworkSettings))
{
InitialiseInterfaces();
@ -533,9 +492,7 @@ namespace Jellyfin.Networking.Manager
}
}
InitialiseLan(config);
InitialiseBind(config);
InitialiseRemote(config);
EnforceBindRestrictions(config);
InitialiseOverrides(config);
}
@ -649,19 +606,8 @@ namespace Jellyfin.Networking.Manager
/// <inheritdoc/>
public IReadOnlyList<IPData> GetAllBindInterfaces(bool individualInterfaces = false)
{
if (_bindAddresses.Count == 0)
if (_interfaces.Count == 0)
{
if (_bindExclusions.Count > 0)
{
foreach (var exclusion in _bindExclusions)
{
// Return all the interfaces except the ones specifically excluded.
_interfaces.RemoveAll(intf => intf.Address == exclusion);
}
return _interfaces;
}
// No bind address and no exclusions, so listen on all interfaces.
var result = new List<IPData>();
@ -699,14 +645,7 @@ namespace Jellyfin.Networking.Manager
return result;
}
// Remove any excluded bind interfaces.
foreach (var exclusion in _bindExclusions)
{
// Return all the interfaces except the ones specifically excluded.
_bindAddresses.Remove(exclusion);
}
return _bindAddresses.Select(s => new IPData(s, null)).ToList();
return _interfaces;
}
/// <inheritdoc/>
@ -770,8 +709,7 @@ namespace Jellyfin.Networking.Manager
// Get the first LAN interface address that's not excluded and not a loopback address.
var availableInterfaces = _interfaces.Where(x => !IPAddress.IsLoopback(x.Address))
.OrderByDescending(x => _bindAddresses.Contains(x.Address))
.ThenByDescending(x => IsInLocalNetwork(x.Address))
.OrderByDescending(x => IsInLocalNetwork(x.Address))
.ThenBy(x => x.Index);
if (availableInterfaces.Any())
@ -815,21 +753,8 @@ namespace Jellyfin.Networking.Manager
/// <inheritdoc/>
public IReadOnlyList<IPData> GetInternalBindAddresses()
{
if (_bindAddresses.Count == 0)
{
if (_bindExclusions.Count > 0)
{
// Return all the internal interfaces except the ones excluded.
return _interfaces.Where(p => !_bindExclusions.Contains(p.Address)).ToList();
}
// No bind address, so return all internal interfaces.
return _interfaces;
}
// Select all local bind addresses
return _interfaces.Where(x => _bindAddresses.Contains(x.Address))
.Where(x => IsInLocalNetwork(x.Address))
return _interfaces.Where(x => IsInLocalNetwork(x.Address))
.OrderBy(x => x.Index)
.ToList();
}
@ -876,31 +801,6 @@ namespace Jellyfin.Networking.Manager
return address.Equals(IPAddress.Loopback) || address.Equals(IPAddress.IPv6Loopback) || match;
}
private IPData? FindInterfaceForIp(IPAddress address, bool localNetwork = false)
{
if (address == null)
{
throw new ArgumentNullException(nameof(address));
}
var interfaces = _interfaces;
if (localNetwork)
{
interfaces = interfaces.Where(x => IsInLocalNetwork(x.Address)).ToList();
}
foreach (var intf in interfaces)
{
if (intf.Subnet.Contains(address))
{
return intf;
}
}
return null;
}
private bool CheckIfLanAndNotExcluded(IPAddress address)
{
bool match = false;
@ -992,79 +892,54 @@ namespace Jellyfin.Networking.Manager
{
result = string.Empty;
int count = _bindAddresses.Count;
if (count == 1 && (_bindAddresses[0].Equals(IPAddress.Any) || _bindAddresses[0].Equals(IPAddress.IPv6Any)))
int count = _interfaces.Count();
if (count == 1 && (_interfaces[0].Equals(IPAddress.Any) || _interfaces[0].Equals(IPAddress.IPv6Any)))
{
// Ignore IPAny addresses.
count = 0;
}
if (count != 0)
if (count > 0)
{
// Check to see if any of the bind interfaces are in the same subnet as the source.
IPAddress? defaultGateway = null;
IPAddress? bindAddress = null;
var externalInterfaces = _interfaces.Where(x => !IsInLocalNetwork(x.Address))
.OrderBy(x => x.Index)
.ToList();
if (isInExternalSubnet)
if (isInExternalSubnet && externalInterfaces.Any())
{
// Find all external bind addresses. Store the default gateway, but check to see if there is a better match first.
foreach (var addr in _bindAddresses)
{
if (defaultGateway == null && !IsInLocalNetwork(addr))
{
defaultGateway = addr;
}
var intf = _interfaces.Where(x => x.Subnet.Contains(addr)).OrderBy(x => x.Index).FirstOrDefault();
// Check to see if any of the external bind interfaces are in the same subnet as the source.
// If none exists, this will select the first external interface if there is one.
bindAddress = externalInterfaces
.OrderByDescending(x => x.Subnet.Contains(source))
.ThenBy(x => x.Index)
.Select(x => x.Address)
.FirstOrDefault();
if (bindAddress == null && intf != null && intf.Subnet.Contains(source))
{
bindAddress = intf.Address;
}
if (defaultGateway != null && bindAddress != null)
{
break;
}
if (bindAddress != null)
{
result = NetworkExtensions.FormatIpString(bindAddress);
_logger.LogDebug("{Source}: GetBindInterface: Has source, found a matching external bind interface. {Result}", source, result);
return true;
}
}
else
{
// Look for the best internal address.
foreach (var bA in _bindAddresses.Where(x => IsInLocalNetwork(x)))
// Check to see if any of the internal bind interfaces are in the same subnet as the source.
// If none exists, this will select the first internal interface if there is one.
bindAddress = _interfaces.Where(x => IsInLocalNetwork(x.Address))
.OrderByDescending(x => x.Subnet.Contains(source))
.ThenBy(x => x.Index)
.Select(x => x.Address)
.FirstOrDefault();
if (bindAddress != null)
{
var intf = FindInterfaceForIp(source, true);
if (intf != null)
{
bindAddress = intf.Address;
break;
}
result = NetworkExtensions.FormatIpString(bindAddress);
_logger.LogWarning("{Source}: External request received, only an internal interface bind found. {Result}", source, result);
return true;
}
}
if (bindAddress != null)
{
result = NetworkExtensions.FormatIpString(bindAddress);
_logger.LogDebug("{Source}: GetBindInterface: Has source, found a matching bind interface subnet. {Result}", source, result);
return true;
}
if (isInExternalSubnet && defaultGateway != null)
{
result = NetworkExtensions.FormatIpString(defaultGateway);
_logger.LogDebug("{Source}: GetBindInterface: Using first user defined external interface. {Result}", source, result);
return true;
}
result = NetworkExtensions.FormatIpString(_bindAddresses[0]);
_logger.LogDebug("{Source}: GetBindInterface: Selected first user defined interface. {Result}", source, result);
if (isInExternalSubnet)
{
_logger.LogWarning("{Source}: External request received, only an internal interface bind found.", source);
}
return true;
}
return false;

2
MediaBrowser.Common/Net/INetworkManager.cs
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@ -124,7 +124,7 @@ namespace MediaBrowser.Common.Net
bool TryParseInterface(string intf, out List<IPData>? result);
/// <summary>
/// Returns all the internal Bind interface addresses.
/// Returns all the internal bind interface addresses.
/// </summary>
/// <returns>An internal list of interfaces addresses.</returns>
IReadOnlyList<IPData> GetInternalBindAddresses();

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