diff options
Diffstat (limited to 'MediaBrowser.Common/Net/IPHost.cs')
| -rw-r--r-- | MediaBrowser.Common/Net/IPHost.cs | 111 |
1 files changed, 56 insertions, 55 deletions
diff --git a/MediaBrowser.Common/Net/IPHost.cs b/MediaBrowser.Common/Net/IPHost.cs index 4cede9ab1..5db8817ee 100644 --- a/MediaBrowser.Common/Net/IPHost.cs +++ b/MediaBrowser.Common/Net/IPHost.cs @@ -1,4 +1,3 @@ -#nullable enable using System; using System.Diagnostics; using System.Linq; @@ -128,62 +127,63 @@ namespace MediaBrowser.Common.Net /// <returns><c>true</c> if the parsing is successful, <c>false</c> if not.</returns> public static bool TryParse(string host, out IPHost hostObj) { - if (!string.IsNullOrEmpty(host)) + if (string.IsNullOrWhiteSpace(host)) { - // See if it's an IPv6 with port address e.g. [::1]:120. - int i = host.IndexOf("]:", StringComparison.OrdinalIgnoreCase); - if (i != -1) - { - return TryParse(host.Remove(i - 1).TrimStart(' ', '['), out hostObj); - } - else - { - // See if it's an IPv6 in [] with no port. - i = host.IndexOf(']', StringComparison.OrdinalIgnoreCase); - if (i != -1) - { - return TryParse(host.Remove(i - 1).TrimStart(' ', '['), out hostObj); - } + hostObj = IPHost.None; + return false; + } - // Is it a host or IPv4 with port? - string[] hosts = host.Split(':'); + // See if it's an IPv6 with port address e.g. [::1] or [::1]:120. + int i = host.IndexOf(']', StringComparison.Ordinal); + if (i != -1) + { + return TryParse(host.Remove(i - 1).TrimStart(' ', '['), out hostObj); + } - if (hosts.Length > 2) - { - hostObj = new IPHost(string.Empty, IPAddress.None); - return false; - } + if (IPNetAddress.TryParse(host, out var netAddress)) + { + // Host name is an ip address, so fake resolve. + hostObj = new IPHost(host, netAddress.Address); + return true; + } - // Remove port from IPv4 if it exists. - host = hosts[0]; + // Is it a host, IPv4/6 with/out port? + string[] hosts = host.Split(':'); - if (string.Equals("localhost", host, StringComparison.OrdinalIgnoreCase)) - { - hostObj = new IPHost(host, new IPAddress(Ipv4Loopback)); - return true; - } + if (hosts.Length <= 2) + { + // This is either a hostname: port, or an IP4:port. + host = hosts[0]; - if (IPNetAddress.TryParse(host, out IPNetAddress netIP)) - { - // Host name is an ip address, so fake resolve. - hostObj = new IPHost(host, netIP.Address); - return true; - } + if (string.Equals("localhost", host, StringComparison.OrdinalIgnoreCase)) + { + hostObj = new IPHost(host); + return true; } - // Only thing left is to see if it's a host string. - if (!string.IsNullOrEmpty(host)) + if (IPAddress.TryParse(host, out var netIP)) { - // Use regular expression as CheckHostName isn't RFC5892 compliant. - // Modified from gSkinner's expression at https://stackoverflow.com/questions/11809631/fully-qualified-domain-name-validation - Regex re = new Regex(@"^(?!:\/\/)(?=.{1,255}$)((.{1,63}\.){0,127}(?![0-9]*$)[a-z0-9-]+\.?)$", RegexOptions.IgnoreCase | RegexOptions.Multiline); - if (re.Match(host).Success) - { - hostObj = new IPHost(host); - return true; - } + // Host name is an ip address, so fake resolve. + hostObj = new IPHost(host, netIP); + return true; } } + else + { + // Invalid host name, as it cannot contain : + hostObj = new IPHost(string.Empty, IPAddress.None); + return false; + } + + // Use regular expression as CheckHostName isn't RFC5892 compliant. + // Modified from gSkinner's expression at https://stackoverflow.com/questions/11809631/fully-qualified-domain-name-validation + string pattern = @"(?im)^(?!:\/\/)(?=.{1,255}$)((.{1,63}\.){0,127}(?![0-9]*$)[a-z0-9-]+\.?)$"; + + if (Regex.IsMatch(host, pattern)) + { + hostObj = new IPHost(host); + return true; + } hostObj = IPHost.None; return false; @@ -344,10 +344,14 @@ namespace MediaBrowser.Common.Net { output += "Any Address,"; } - else + else if (i.AddressFamily == AddressFamily.InterNetwork) { output += $"{i}/32,"; } + else + { + output += $"{i}/128,"; + } } output = output[0..^1]; @@ -384,8 +388,8 @@ namespace MediaBrowser.Common.Net /// <inheritdoc/> protected override IPObject CalculateNetworkAddress() { - var netAddr = NetworkAddressOf(this[0], PrefixLength); - return new IPNetAddress(netAddr.Address, netAddr.PrefixLength); + var (address, prefixLength) = NetworkAddressOf(this[0], PrefixLength); + return new IPNetAddress(address, prefixLength); } /// <summary> @@ -395,13 +399,10 @@ namespace MediaBrowser.Common.Net private bool ResolveHost() { // When was the last time we resolved? - if (_lastResolved == null) - { - _lastResolved = DateTime.UtcNow; - } + _lastResolved ??= DateTime.UtcNow; // If we haven't resolved before, or our timer has run out... - if ((_addresses.Length == 0 && !Resolved) || (DateTime.UtcNow > _lastResolved?.AddMinutes(Timeout))) + if ((_addresses.Length == 0 && !Resolved) || (DateTime.UtcNow > _lastResolved.Value.AddMinutes(Timeout))) { _lastResolved = DateTime.UtcNow; ResolveHostInternal().GetAwaiter().GetResult(); @@ -422,7 +423,7 @@ namespace MediaBrowser.Common.Net // Resolves the host name - so save a DNS lookup. if (string.Equals(HostName, "localhost", StringComparison.OrdinalIgnoreCase)) { - _addresses = new IPAddress[] { new IPAddress(Ipv4Loopback), new IPAddress(Ipv6Loopback) }; + _addresses = new IPAddress[] { IPAddress.Loopback, IPAddress.IPv6Loopback }; return; } |