This commit is contained in:
femsci 2023-06-14 11:22:29 +02:00
parent 2f87a95828
commit c838711e3e
Signed by: femsci
GPG key ID: 08F7911F0E650C67
23 changed files with 454 additions and 25 deletions

57
README.md Normal file
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@ -0,0 +1,57 @@
# Nyangate
NYANET reverse proxy for HTTP
## Features
- [ ] configurable routing
- [ ] load balancing
- [ ] access control
- [ ] integration with IPMeow IPAM
- [ ] header stripping and rewriting
- [ ] intrusion detection
- [ ] rate limiting
- [ ] CLI interface
- [ ] REST API
## Building
Building with Docker
```bash
docker build . --tag nyangate
```
Local compilation
```bash
dotnet build
```
## Running
To run with Docker
```bash
docker run -it nyanet/nyangate
```
or docker-compose
```yaml
version: '3.3'
services:
nyangate:
ports:
- '80:80'
- '443:443'
volumes:
- './data:/srv/nyangate/config'
- './certs:/etc/tls/certs:ro'
restart: always
image: nyanet/nyangate
```
```bash
docker-compose up -d
```

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main.key.pem Normal file
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-----BEGIN PRIVATE KEY-----
MIIJQgIBADANBgkqhkiG9w0BAQEFAASCCSwwggkoAgEAAoICAQC3E4kHER70RYZh
mDNB8f2ae+hPBUxU+Ag+mizg9hgW8l5esKK3AgCPRkKZPg96S+r/lEfifg06W2lI
ReMzWCFu3xij9bnLliq5AY7vicrodCFAFP6LHSX0zfEq9lm/wfxHoUsdPRjQgfPl
1XQGMBezO1Pa0W9gM5dkfP6B6Gn19nZOiokprhbZq+ExYvi/85o/jxaZb/jarqwM
ipu9D5O8BAowVGsNIqh4LzA3W46HYEW/QUiysDk+EaUWcP0aY1hbkdkCLRGaJBV2
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trJEchCB7qaOKKQskXQgcRUvi/kY4QIDAQABAoICAATAGjw5fTkpVkv5LpQOkfIS
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lCINte00o1r4Se6VltoDF/6CBOp7ZEoTn0mpiu6BDfQ8r7H65FGt+p/zfetFO0ut
qVqwJrzEXl0Nq5yNym15uSJvvm8sqlBvfw8TCBtsJVDRfCCMRlHacJYtvayXNvnO
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GISgAZYI5KMRFwtyRcGDHd9BJJQdfkRrNgb1H+QArIl+JnOEf+YoQE1x/GPKYQSv
fJtJau1v5WkynXdITrq1ysOV5qKqaxU4ixHxU45oJsaOqNns+yrymjxtHXxoIzFw
AQKCAQEAl+lN5sz5T1ZSmgq6U9wO3cUm+ZMzXfIEA/DHZAR+JqakPVqFYHMLcCkj
/ZK+8h++S2mMDI9jpCMSlc2FP7zddDS6VAYkkYtvXvqMTTN5fS7uluCsCssnrsaY
csg2iDOU8+Utmlk0m+UhaTrSRWRCqNg/LvO051y0HyeUbClrz/412yHpOQmU1cw5
Gnp2QRNBfTYmdMO+ldmhmFj94+u+1gqPN6LF6rpB7PR+g2YgbvCJgS5FIWfHNzB8
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A6a/XxsG5QEM+okhljJX1TmpmsjsiA==
-----END PRIVATE KEY-----

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-----BEGIN CERTIFICATE-----
MIIFAzCCAuugAwIBAgIUSSnKwcDCcz5MhNWZ/eV+uhBap6kwDQYJKoZIhvcNAQEL
BQAwETEPMA0GA1UEAwwGTllBTkVUMB4XDTIzMDMyODEwMzMxM1oXDTI0MDMyNzEw
MzMxM1owETEPMA0GA1UEAwwGTllBTkVUMIICIjANBgkqhkiG9w0BAQEFAAOCAg8A
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6zfPt1qT//7MS/KZNU69oJzstqkprXRkelc0SoBB+BY4oWUIvSXR
-----END CERTIFICATE-----

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@ -1,5 +1,9 @@
<Project Sdk="Microsoft.NET.Sdk"> <Project Sdk="Microsoft.NET.Sdk">
<ItemGroup>
<ProjectReference Include="..\Nyangate.Lib\Nyangate.Lib.csproj" />
</ItemGroup>
<PropertyGroup> <PropertyGroup>
<OutputType>Exe</OutputType> <OutputType>Exe</OutputType>
<TargetFramework>net7.0</TargetFramework> <TargetFramework>net7.0</TargetFramework>

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@ -0,0 +1,33 @@
using System.Net;
namespace Nyangate.Lib.Data;
public enum RouteType : byte
{
STATIC_ADDRESS = 0x0,
HOSTNAME = 0x1
}
public class IPRoute
{
public IPRoute(string addrOrName)
{
if (!IPAddress.TryParse(addrOrName, out _addr))
{
_dnsName = addrOrName;
}
}
private readonly IPAddress? _addr;
private readonly string? _dnsName;
public RouteType Type { get; set; }
public IPAddress Resolve()
{
return _addr ?? Dns.GetHostEntry(_dnsName!, System.Net.Sockets.AddressFamily.Unspecified).AddressList.First();//TODO: Cleanup
}
public string GetHost()
{
return _dnsName ?? _addr!.ToString();
}
}

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@ -0,0 +1,8 @@
namespace Nyangate.Lib.Data;
public class RoutingInfo
{
public bool UsesTls { get; set; }
public required IPRoute Route { get; set; }
public required int Port { get; set; }
}

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@ -0,0 +1,15 @@
namespace Nyangate.Lib.Data;
public class ServerHost
{
public required string Hostname { get; set; }
public ICollection<string> Aliases { get; set; } = Array.Empty<string>();
public required RoutingInfo Route { get; set; }
public Uri CreateBaseUri() => new UriBuilder()
{
Scheme = Route.UsesTls ? "https" : "http",
Host = Route.Route.GetHost(),
Port = Route.Port,
}.Uri;
}

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@ -0,0 +1,27 @@
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Extensions;
namespace Nyangate.Lib.Http;
public class HttpContextAdapter
{
public HttpContextAdapter(HttpContext ctx)
{
_ctx = ctx;
_msg = new HttpRequestMessage(new HttpMethod(ctx.Request.Method), ctx.Request.GetEncodedUrl());
foreach (var header in ctx.Request.Headers)
{
_msg.Headers.Add(header.Key, header.Value.AsEnumerable());
}
_msg.VersionPolicy = HttpVersionPolicy.RequestVersionOrHigher;
}
private readonly HttpContext _ctx;
public HttpRequestMessage _msg;
public HttpRequestMessage Message => _msg;
}

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@ -6,4 +6,8 @@
<Nullable>enable</Nullable> <Nullable>enable</Nullable>
</PropertyGroup> </PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
</ItemGroup>
</Project> </Project>

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@ -0,0 +1,8 @@
using Nyangate.Lib.Data;
namespace Nyangate.Lib.Routing;
public abstract class RoutingStrategy
{
public abstract IPRoute Next();
}

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@ -0,0 +1,21 @@
namespace Nyangate.Filters;
public class ContextFilter
{
private readonly List<IFilter> _filters = typeof(IFilter).Assembly.GetTypes().Where(t => t.IsAssignableFrom(typeof(IFilter))).Select(t => (IFilter)Activator.CreateInstance(t)!).ToList();
public void ApplyAll(FilterType type, HttpContext ctx)
{
foreach (var filter in _filters.Where(f => f.Type.HasFlag(type)))
{
filter.Apply(ctx); //TODO: Priorities
}
}
}
[Flags]
public enum FilterType : int
{
Proxy = 0x1,
Sensitive = 0x2,
All = 0xff
}

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@ -0,0 +1,8 @@
namespace Nyangate.Filters;
public interface IFilter
{
public void Apply(HttpContext context);
public FilterType Type { get; }
}

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@ -0,0 +1,40 @@
using System.Collections.Immutable;
using Microsoft.Net.Http.Headers;
namespace Nyangate.Filters;
public class ProxyHeaderFilter : IFilter
{
private static readonly HashSet<string> _headersToExclude = new(18, StringComparer.OrdinalIgnoreCase)
{
HeaderNames.Connection,
HeaderNames.TransferEncoding,
HeaderNames.KeepAlive,
HeaderNames.Upgrade,
HeaderNames.ProxyConnection,
HeaderNames.ProxyAuthenticate,
"Proxy-Authentication-Info",
HeaderNames.ProxyAuthorization,
"Proxy-Features",
"Proxy-Instruction",
"Security-Scheme",
"ALPN",
"Close",
"HTTP2-Settings",
HeaderNames.UpgradeInsecureRequests,
HeaderNames.TE,
HeaderNames.AltSvc,
HeaderNames.StrictTransportSecurity,
};
public FilterType Type => FilterType.Proxy;
public void Apply(HttpContext context)
{
foreach (var header in context.Request.Headers.Where(x => _headersToExclude.Contains(x.Key, StringComparer.OrdinalIgnoreCase)).ToArray())
{
context.Request.Headers.Remove(header);
}
}
}

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@ -0,0 +1,17 @@
namespace Nyangate.Middleware;
public class Annotator
{
private readonly RequestDelegate _next;
public Annotator(RequestDelegate next)
{
_next = next;
}
public async Task Invoke(HttpContext ctx)
{
ctx.Request.Headers.Add("Forwarded", $"for={ctx.Connection.RemoteIpAddress};by={ctx.Connection.LocalIpAddress};proto={ctx.Request.Scheme}");
await _next.Invoke(ctx);
}
}

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@ -1,8 +1,3 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace Nyangate.Middleware; namespace Nyangate.Middleware;
public class Filter public class Filter

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@ -1,3 +1,6 @@
using Microsoft.Extensions.Primitives;
using Nyangate.Filters;
using Nyangate.Lib.Http;
using Nyangate.Services; using Nyangate.Services;
namespace Nyangate.Middleware namespace Nyangate.Middleware
@ -15,11 +18,50 @@ namespace Nyangate.Middleware
public async Task Invoke(HttpContext ctx) public async Task Invoke(HttpContext ctx)
{ {
string host = ctx.Request.Host.Host; string hostname = ctx.Request.Host.Host;
//check ctx.Request.IsHttps if strict https required //check ctx.Request.IsHttps if strict https required
var host = _map.Get(hostname) ?? _map.GetFallback();
if (host is null)
{
ctx.Response.StatusCode = 404;
await ctx.Response.WriteAsync("meowless~");
await ctx.Response.CompleteAsync();
return;
}
ctx.Request.Host = new HostString(host.Route.Route.GetHost(), host.Route.Port);
ctx.Request.Scheme = host.Route.UsesTls ? "https" : "http";
new ProxyHeaderFilter().Apply(ctx);
using HttpClient http = new();
HttpRequestMessage request = new HttpContextAdapter(ctx).Message;
if (ctx.Request.Body.CanRead)
{
request.Content = new StreamContent(ctx.Request.Body);
}
var response = await http.SendAsync(request, HttpCompletionOption.ResponseHeadersRead);
Console.WriteLine($"meow: {ctx.Connection.RemoteIpAddress}"); Console.WriteLine($"meow: {ctx.Connection.RemoteIpAddress}");
ctx.Response.StatusCode = 200;
await _next.Invoke(ctx); ctx.Response.StatusCode = (int)response.StatusCode;
ctx.Response.Headers.Clear();
foreach (var header in response.Headers.NonValidated)
{
ctx.Response.Headers.Add(header.Key, new StringValues(header.Value.ToArray()));
}
ctx.Response.ContentType = response.Content.Headers.ContentType?.ToString();
ctx.Response.Headers.Add("Content-Encoding", new StringValues(response.Content.Headers.ContentEncoding.ToArray()));
await response.Content.CopyToAsync(ctx.Response.Body);
await ctx.Response.CompleteAsync();
} }
} }
} }

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@ -1,5 +1,9 @@
<Project Sdk="Microsoft.NET.Sdk.Web"> <Project Sdk="Microsoft.NET.Sdk.Web">
<ItemGroup>
<ProjectReference Include="..\Nyangate.Lib\Nyangate.Lib.csproj" />
</ItemGroup>
<PropertyGroup> <PropertyGroup>
<TargetFramework>net7.0</TargetFramework> <TargetFramework>net7.0</TargetFramework>
<Nullable>enable</Nullable> <Nullable>enable</Nullable>

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@ -1,5 +1,3 @@
using Microsoft.AspNetCore.Components.Routing;
using Nyangate;
using Nyangate.Middleware; using Nyangate.Middleware;
using Nyangate.Services; using Nyangate.Services;
@ -29,6 +27,9 @@ var app = builder.Build();
app.UseMiddleware<Authenticator>(); app.UseMiddleware<Authenticator>();
app.UseMiddleware<Filter>(); app.UseMiddleware<Filter>();
app.UseMiddleware<IPFilter>();
app.UseMiddleware<IDSFilter>();
app.UseMiddleware<Annotator>();
app.UseMiddleware<Nyangate.Middleware.Router>(); app.UseMiddleware<Nyangate.Middleware.Router>();
app.Run(); app.Run();

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@ -1,11 +1,16 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace Nyangate.Services; namespace Nyangate.Services;
public class BlacklistRegistry public class BlacklistRegistry
{
public BlacklistRegistry()
{ {
} }
private readonly Dictionary<string, long> Blacklisted = new();
public async Task<bool> IsBlacklisted(HttpContext ctx)
{
throw new NotImplementedException();
}
}

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@ -0,0 +1,26 @@
using System.Net;
namespace Nyangate.Services;
public class RateLimitService
{
public async Task<bool> IsRateLimited(IPAddress addr, bool update = true)
{
throw new NotImplementedException();
}
public async Task<bool> IsRateLimited(HttpContext ctx, bool update = true)
{
throw new NotImplementedException();
}
public async Task UpdateActivity(HttpContext ctx)
{
throw new NotImplementedException();
}
public async Task UpdateActivity(IPAddress addr)
{
throw new NotImplementedException();
}
}

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@ -1,11 +1,43 @@
using System; using Nyangate.Lib.Data;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace Nyangate.Services; namespace Nyangate.Services;
public class RoutingMap public class RoutingMap
{ {
public RoutingMap()
{
_hosts.Add("meow", new()
{
Hostname = "meow",
Route = new()
{
UsesTls = false,
Port = 8888,
Route = new("localhost")
}
});
}
private readonly Dictionary<string, ServerHost> _hosts = new();
private readonly ServerHost? _fallbackHost;
public ServerHost? Get(string hostname)
{
return GetByMainHostname(hostname) ?? GetByAlias(hostname);
}
public ServerHost? GetByMainHostname(string hostname)
{
return _hosts.GetValueOrDefault(hostname);
}
public ServerHost? GetByAlias(string alias)
{
return _hosts.SingleOrDefault(x => x.Value.Aliases.Contains(alias)).Value;
}
public ServerHost? GetFallback()
{
return _fallbackHost;
}
} }

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@ -1,14 +1,16 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography.X509Certificates; using System.Security.Cryptography.X509Certificates;
using System.Threading.Tasks;
namespace Nyangate.Services; namespace Nyangate.Services;
public class ServerCertificateRegistry public class ServerCertificateRegistry
{ {
public ServerCertificateRegistry()
{
_main = X509Certificate2.CreateFromPemFile("/home/nya/Dev/csharp/nyangate/main.pem", "/home/nya/Dev/csharp/nyangate/main.key.pem");
}
private readonly Dictionary<string, X509Certificate2> _registry = new(); private readonly Dictionary<string, X509Certificate2> _registry = new();
private readonly X509Certificate2 _main;
public X509Certificate2 GetOrDefault(string hostname) public X509Certificate2 GetOrDefault(string hostname)
{ {
return _registry.GetValueOrDefault(hostname, Default()); return _registry.GetValueOrDefault(hostname, Default());
@ -16,6 +18,6 @@ public class ServerCertificateRegistry
public X509Certificate2 Default() public X509Certificate2 Default()
{ {
throw new NotImplementedException(); return _main;
} }
} }

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@ -1 +0,0 @@
global using Xunit;