diff --git a/Musify.StreamingGateway/.gitattributes b/Musify.StreamingGateway/.gitattributes new file mode 100644 index 0000000..1ff0c42 --- /dev/null +++ b/Musify.StreamingGateway/.gitattributes @@ -0,0 +1,63 @@ +############################################################################### +# Set default behavior to automatically normalize line endings. +############################################################################### +* text=auto + +############################################################################### +# Set default behavior for command prompt diff. +# +# This is need for earlier builds of msysgit that does not have it on by +# default for csharp files. +# Note: This is only used by command line +############################################################################### +#*.cs diff=csharp + +############################################################################### +# Set the merge driver for project and solution files +# +# Merging from the command prompt will add diff markers to the files if there +# are conflicts (Merging from VS is not affected by the settings below, in VS +# the diff markers are never inserted). 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token) + { + if (string.IsNullOrWhiteSpace(token)) + return Result.Unauthorized(); + + var result = await _handler.ValidateTokenAsync(token, _validationParameters); + if (!result.IsValid) + return Result.Unauthorized(); + + if (!result.Claims.TryGetValue("prefix", out var claim)) + return Result.Unauthorized(); + + if (claim is not string prefix) + return Result.Unauthorized(); + + if (string.IsNullOrEmpty(prefix)) + return Result.Unauthorized(); + + return Result.Success(prefix); + } + + public void Dispose() => _rsa.Dispose(); +} diff --git a/Musify.StreamingGateway/StreamingGateway/Configuration/StreamTicketValidationOptions.cs b/Musify.StreamingGateway/StreamingGateway/Configuration/StreamTicketValidationOptions.cs new file mode 100644 index 0000000..8f21c17 --- /dev/null +++ b/Musify.StreamingGateway/StreamingGateway/Configuration/StreamTicketValidationOptions.cs @@ -0,0 +1,23 @@ +using System.ComponentModel.DataAnnotations; + +namespace Musify.StreamingGateway.Configuration; + +public sealed class StreamTicketValidationOptions +{ + public const string SectionName = "StreamTicket"; + + [Required] + public required string PublicKeyPath { get; set; } + + [Required] + public string Audience { get; set; } = "media-gateway"; + + [Required] + public string Issuer { get; set; } = "musify-webapi"; + + public string QueryParameterName { get; set; } = "t"; + + public string HeaderName { get; set; } = "X-Stream-Ticket"; + + public string MediaPathPrefix { get; set; } = "/media"; +} diff --git a/Musify.StreamingGateway/StreamingGateway/Middleware/TicketValidationMiddleware.cs b/Musify.StreamingGateway/StreamingGateway/Middleware/TicketValidationMiddleware.cs new file mode 100644 index 0000000..b282d39 --- /dev/null +++ b/Musify.StreamingGateway/StreamingGateway/Middleware/TicketValidationMiddleware.cs @@ -0,0 +1,63 @@ +using Microsoft.Extensions.Options; +using Musify.StreamingGateway.Authentication; +using Musify.StreamingGateway.Configuration; + +namespace Musify.StreamingGateway.Middleware; + +public sealed class TicketValidationMiddleware( + RequestDelegate next, + TicketValidator ticketValidator, + IOptions options, + ILogger logger) +{ + private readonly StreamTicketValidationOptions options = options.Value; + + public async Task InvokeAsync(HttpContext context) + { + var path = context.Request.Path; + + if (!path.StartsWithSegments(options.MediaPathPrefix, out var remaining)) + { + await next(context); + return; + } + + var token = context.Request.Query[options.QueryParameterName].ToString(); + if (string.IsNullOrEmpty(token)) + { + token = context.Request.Headers[options.HeaderName].ToString(); + } + + var validation = await ticketValidator.ValidateTicketAsync(token); + + if (!validation.IsSuccess) + { + logger.LogWarning("Rejected media request {Path}: missing or invalid ticket", path); + context.Response.StatusCode = StatusCodes.Status401Unauthorized; + return; + } + + var prefix = validation.Value; + + var objectKey = remaining.Value?.TrimStart('/') ?? string.Empty; + if (!objectKey.StartsWith(prefix, StringComparison.Ordinal)) + { + logger.LogWarning("Rejected media request {ObjectKey}: outside authorized prefix {Prefix}", objectKey, prefix); + context.Response.StatusCode = StatusCodes.Status403Forbidden; + return; + } + + StripQueryParameter(context, options.QueryParameterName); + await next(context); + } + + private static void StripQueryParameter(HttpContext context, string name) + { + var remaining = context.Request.Query + .Where(pair => !string.Equals(pair.Key, name, StringComparison.Ordinal)) + .SelectMany(pair => pair.Value.Select(value => new KeyValuePair(pair.Key, value))) + .ToList(); + + context.Request.QueryString = QueryString.Create(remaining); + } +} diff --git a/Musify.StreamingGateway/StreamingGateway/Program.cs b/Musify.StreamingGateway/StreamingGateway/Program.cs new file mode 100644 index 0000000..0ee5a1c --- /dev/null +++ b/Musify.StreamingGateway/StreamingGateway/Program.cs @@ -0,0 +1,42 @@ +using Musify.StreamingGateway.Authentication; +using Musify.StreamingGateway.Configuration; +using Musify.StreamingGateway.Middleware; + +var builder = WebApplication.CreateBuilder(); + +builder.Services + .AddOptions() + .Bind(builder.Configuration.GetRequiredSection(StreamTicketValidationOptions.SectionName)) + .ValidateDataAnnotations() + .ValidateOnStart(); + +builder.Services.AddSingleton(); + +const string corsPolicy = "media-clients"; +var allowedOrigins = builder.Configuration.GetSection("Cors:AllowedOrigins").Get() ?? []; +builder.Services.AddCors(options => options.AddPolicy(corsPolicy, policy => +{ + if (builder.Environment.IsDevelopment()) + policy.AllowAnyOrigin(); + else + policy.WithOrigins(allowedOrigins); + + policy.AllowAnyHeader() + .WithMethods("GET", "HEAD") + .WithExposedHeaders("Content-Range", "Accept-Ranges", "Content-Length"); +} )); + +builder.Services + .AddReverseProxy() + .LoadFromConfig(builder.Configuration.GetSection("ReverseProxy")); + +var app = builder.Build(); + +app.MapGet("/health", () => Results.Ok("healthy")) + .WithSummary("Health Check Endpoint"); + +app.UseCors(corsPolicy); +app.UseMiddleware(); +app.MapReverseProxy(); + +app.Run(); diff --git a/Musify.StreamingGateway/StreamingGateway/Properties/launchSettings.json b/Musify.StreamingGateway/StreamingGateway/Properties/launchSettings.json new file mode 100644 index 0000000..eaf1884 --- /dev/null +++ b/Musify.StreamingGateway/StreamingGateway/Properties/launchSettings.json @@ -0,0 +1,14 @@ +{ + "$schema": "https://json.schemastore.org/launchsettings.json", + "profiles": { + "StreamingGateway": { + "commandName": "Project", + "dotnetRunMessages": true, + "launchBrowser": false, + "applicationUrl": "http://localhost:8081", + "environmentVariables": { + "ASPNETCORE_ENVIRONMENT": "Development" + } + } + } +} diff --git a/Musify.StreamingGateway/StreamingGateway/StreamingGateway.csproj b/Musify.StreamingGateway/StreamingGateway/StreamingGateway.csproj new file mode 100644 index 0000000..7b7346b --- /dev/null +++ b/Musify.StreamingGateway/StreamingGateway/StreamingGateway.csproj @@ -0,0 +1,17 @@ + + + + net10.0 + enable + enable + Musify.StreamingGateway + media-gateway-2f1c9b6a-7d3e-4c0a-9a21-0b8e5d4c3f10 + + + + + + + + + diff --git a/Musify.StreamingGateway/StreamingGateway/appsettings.Development.json b/Musify.StreamingGateway/StreamingGateway/appsettings.Development.json new file mode 100644 index 0000000..f18846a --- /dev/null +++ b/Musify.StreamingGateway/StreamingGateway/appsettings.Development.json @@ -0,0 +1,32 @@ +{ + "StreamTicket": { + "PublicKeyPath": "D:\\weed\\stream_public.pem", + "Audience": "media-gateway", + "Issuer": "musify-webapi", + "QueryParameterName": "t", + "MediaPathPrefix": "/media" + }, + + "Cors": { + "AllowedOrigins": [ "http://localhost:5173", "http://localhost:3000" ] + }, + + "ReverseProxy": { + "Routes": { + "media": { + "ClusterId": "seaweed-filer", + "Match": { "Path": "/media/{**rest}" }, + "Transforms": [ + { "PathPattern": "/buckets/webapi-storage/{**rest}" } + ] + } + }, + "Clusters": { + "seaweed-filer": { + "Destinations": { + "filer": { "Address": "http://localhost:8888/" } + } + } + } + } +} diff --git a/Musify.StreamingGateway/StreamingGateway/appsettings.json b/Musify.StreamingGateway/StreamingGateway/appsettings.json new file mode 100644 index 0000000..c382627 --- /dev/null +++ b/Musify.StreamingGateway/StreamingGateway/appsettings.json @@ -0,0 +1,10 @@ +{ + "Logging": { + "LogLevel": { + "Default": "Information", + "Microsoft.AspNetCore": "Warning", + "Yarp": "Information" + } + }, + "AllowedHosts": "*" +}