Floatplane channel plugin for Jellyfin 10.10.x: browse, HLS proxy, cookie session, CI release
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- IChannel: creators -> sub-channels -> video posts (public listing API, search mapped)
- IRequiresMediaInfoCallback -> signed proxy URLs; stream controller rewrites HLS so the
  AES-128 key is fetched server-side with the session cookie, segments stay on the CDN
- delivery/info cached per token lifetime and throttled (~2/min)
- config page: paste sails.sid + validate, extra creators, quality, search test
- scripts/package.sh -> plugin folder + zip + md5 + manifest.json; Gitea release workflow
- research docs, HAR analysis (HAR itself gitignored), install-pi5.sh

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
2026-10-25 09:42:27 +01:00
commit 9e33a343ab
162 changed files with 52004 additions and 0 deletions

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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Net;
using System.Net.Http;
using System.Net.Http.Json;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Plugin.Chaosflix.Api.Models;
using Microsoft.Extensions.Logging;
namespace Jellyfin.Plugin.Chaosflix.Api;
/// <summary>
/// HTTP client for the media.ccc.de public API with built-in caching.
/// </summary>
public class CccApiClient : IDisposable
{
/// <summary>Default public API endpoint; overridable for mirrors and tests.</summary>
public const string DefaultBaseUrl = "https://api.media.ccc.de/public";
/// <summary>
/// Default endpoint reporting which rooms are on air. A separate service from the
/// archive API, hence its own base url.
/// </summary>
public const string DefaultStreamingBaseUrl = "https://streaming.media.ccc.de";
/// <summary>
/// Name of the <see cref="IHttpClientFactory"/> client used to resolve CDN redirects.
/// It must be configured with <c>AllowAutoRedirect = false</c>.
/// </summary>
public const string RedirectClientName = "Chaosflix.CdnRedirect";
private const string ConferencesCacheKey = "conferences";
/// <summary>
/// How long the conference list and conference details stay cached.
/// <see cref="Channel.ChaosflixSyncTask"/> rewrites both on every run, so this only has to
/// outlive <see cref="Channel.ChaosflixSyncTask.SyncInterval"/>; the extra hour of margin keeps
/// the pre-warmed data usable when a run is late, skipped or still in progress.
/// </summary>
public static readonly TimeSpan ConferenceCacheTtl = TimeSpan.FromHours(7);
/// <summary>Event detail with recordings — cache for 15 minutes.</summary>
private static readonly TimeSpan EventTtl = TimeSpan.FromMinutes(15);
/// <summary>Search results — cache for 10 minutes.</summary>
private static readonly TimeSpan SearchTtl = TimeSpan.FromMinutes(10);
/// <summary>
/// Which rooms are live — cache for a minute. Everything else here describes an
/// archive that changes by the day; this changes between two talks.
/// </summary>
private static readonly TimeSpan LiveTtl = TimeSpan.FromMinutes(1);
/// <summary>
/// How long the configuration page's live check waits. Short on purpose: an endpoint
/// that needs longer than this is the answer the page is asking for.
/// </summary>
private static readonly TimeSpan ReachabilityTimeout = TimeSpan.FromSeconds(10);
private readonly IHttpClientFactory _httpClientFactory;
private readonly HttpClient _httpClient;
private readonly ILogger<CccApiClient> _logger;
private readonly MemoryCache _cache = new();
/// <summary>
/// Initializes a new instance of the <see cref="CccApiClient"/> class.
/// </summary>
public CccApiClient(IHttpClientFactory httpClientFactory, ILogger<CccApiClient> logger)
{
_httpClientFactory = httpClientFactory;
_httpClient = httpClientFactory.CreateClient(nameof(CccApiClient));
_httpClient.DefaultRequestHeaders.Accept.Add(
new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
_logger = logger;
}
/// <summary>
/// Gets all conferences (cached).
/// </summary>
public Task<List<CccConference>> GetConferencesAsync(CancellationToken cancellationToken)
{
return _cache.GetOrCreateAsync(ConferencesCacheKey, ConferenceCacheTtl, async ct =>
{
_logger.LogDebug("Fetching conferences from CCC API");
var response = await _httpClient
.GetFromJsonAsync<CccConferencesResponse>(Url("/conferences"), ct)
.ConfigureAwait(false);
return response?.Conferences ?? new List<CccConference>();
}, cancellationToken);
}
/// <summary>
/// Gets a single conference with its events (cached).
/// </summary>
public Task<CccConference?> GetConferenceAsync(string acronym, CancellationToken cancellationToken)
{
return _cache.GetOrCreateAsync(ConferenceCacheKey(acronym), ConferenceCacheTtl, async ct =>
{
_logger.LogDebug("Fetching conference {Acronym} from CCC API", acronym);
return await _httpClient
.GetFromJsonAsync<CccConference>(Url($"/conferences/{Uri.EscapeDataString(acronym)}"), ct)
.ConfigureAwait(false);
}, cancellationToken);
}
/// <summary>
/// Refetches the conference list and replaces the cached copy, leaving every other
/// cache entry (events, CDN redirects) untouched.
/// </summary>
public Task<List<CccConference>> RefreshConferencesAsync(CancellationToken cancellationToken)
{
_cache.Remove(ConferencesCacheKey);
return GetConferencesAsync(cancellationToken);
}
/// <summary>
/// Refetches a single conference and replaces the cached copy, leaving every other
/// cache entry untouched.
/// </summary>
public Task<CccConference?> RefreshConferenceAsync(string acronym, CancellationToken cancellationToken)
{
_cache.Remove(ConferenceCacheKey(acronym));
return GetConferenceAsync(acronym, cancellationToken);
}
/// <summary>
/// Gets a single event with its recordings (cached).
/// </summary>
public Task<CccEvent?> GetEventAsync(string guid, CancellationToken cancellationToken)
{
return _cache.GetOrCreateAsync($"event:{guid}", EventTtl, async ct =>
{
_logger.LogDebug("Fetching event {Guid} from CCC API", guid);
try
{
return await _httpClient
.GetFromJsonAsync<CccEvent>(Url($"/events/{Uri.EscapeDataString(guid)}"), ct)
.ConfigureAwait(false);
}
catch (HttpRequestException ex) when (ex.StatusCode == HttpStatusCode.NotFound)
{
_logger.LogDebug("Event {Guid} is unknown to the CCC API", guid);
return null;
}
}, cancellationToken);
}
/// <summary>
/// Gets the conferences that are streaming right now (cached briefly).
/// Outside a congress the endpoint answers with an empty list, which is not an
/// error and is what keeps the live folder from appearing all year.
/// </summary>
public Task<List<CccLiveConference>> GetLiveConferencesAsync(CancellationToken cancellationToken)
{
// The endpoint is part of the key: pointing the plugin at a different streaming
// site has to take effect at once, not after the entry expires.
return _cache.GetOrCreateAsync($"live:{StreamingBaseUrl}", LiveTtl, async ct =>
{
_logger.LogDebug("Fetching live streams from {Url}", StreamingBaseUrl);
try
{
var conferences = await _httpClient
.GetFromJsonAsync<List<CccLiveConference>>($"{StreamingBaseUrl}/streams/v2.json", ct)
.ConfigureAwait(false);
return conferences ?? new List<CccLiveConference>();
}
catch (Exception ex) when (ex is HttpRequestException or System.Text.Json.JsonException)
{
// A congress is the one time the archive is least interesting, but a
// streaming site that is down must not take the rest of the channel with it.
_logger.LogWarning(ex, "Could not read the live streams; treating nothing as live");
return new List<CccLiveConference>();
}
}, cancellationToken);
}
/// <summary>
/// Searches for events (cached).
/// </summary>
public Task<List<CccEvent>> SearchEventsAsync(string query, CancellationToken cancellationToken)
{
return _cache.GetOrCreateAsync($"search:{query}", SearchTtl, async ct =>
{
_logger.LogDebug("Searching CCC API for {Query}", query);
var encoded = Uri.EscapeDataString(query);
var response = await _httpClient
.GetFromJsonAsync<CccEventsResponse>(Url($"/events/search?q={encoded}"), ct)
.ConfigureAwait(false);
return response?.Events ?? new List<CccEvent>();
}, cancellationToken);
}
/// <summary>
/// Gets the endpoint requests actually go to: the configured one, or the public default.
/// </summary>
public static string BaseUrl
{
get
{
var configured = Plugin.Instance?.Configuration.ApiBaseUrl;
return string.IsNullOrWhiteSpace(configured) ? DefaultBaseUrl : configured.TrimEnd('/');
}
}
/// <summary>
/// Gets the endpoint the live stream list is read from: the configured one, or the
/// public default.
/// </summary>
public static string StreamingBaseUrl
{
get
{
var configured = Plugin.Instance?.Configuration.StreamingBaseUrl;
return string.IsNullOrWhiteSpace(configured) ? DefaultStreamingBaseUrl : configured.TrimEnd('/');
}
}
private static string Url(string path) => BaseUrl + path;
/// <summary>
/// Asks the configured endpoint for the conference list, bypassing the cache, and
/// reports whether it answered and how long it took. Used by the configuration page.
/// </summary>
internal async Task<ReachabilityResult> CheckReachabilityAsync(CancellationToken cancellationToken)
{
var url = Url("/conferences");
using var timeout = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
timeout.CancelAfter(ReachabilityTimeout);
var started = Stopwatch.GetTimestamp();
try
{
using var response = await _httpClient.GetAsync(url, timeout.Token).ConfigureAwait(false);
int? conferences = null;
if (response.IsSuccessStatusCode)
{
var payload = await response.Content
.ReadFromJsonAsync<CccConferencesResponse>(timeout.Token).ConfigureAwait(false);
conferences = payload?.Conferences?.Count ?? 0;
}
return new ReachabilityResult(
response.IsSuccessStatusCode,
(int)response.StatusCode,
Elapsed(started),
conferences,
response.IsSuccessStatusCode ? null : response.ReasonPhrase,
url);
}
catch (Exception ex) when (ex is not OperationCanceledException || !cancellationToken.IsCancellationRequested)
{
var reason = ex is OperationCanceledException
? $"no answer within {ReachabilityTimeout.TotalSeconds:N0}s"
: ex.Message;
_logger.LogWarning(ex, "Reachability check for {Url} failed", url);
return new ReachabilityResult(false, null, Elapsed(started), null, reason, url);
}
}
/// <summary>
/// Counts what the cache currently holds, per kind of entry.
/// </summary>
internal CacheSnapshot GetCacheSnapshot() => new(
_cache.CountLive(),
_cache.CountLive(key => key == ConferencesCacheKey || key.StartsWith("conf:", StringComparison.Ordinal)),
_cache.CountLive(key => key.StartsWith("event:", StringComparison.Ordinal)),
_cache.CountLive(key => key.StartsWith("search:", StringComparison.Ordinal)),
_cache.CountLive(key => key.StartsWith("redirect:", StringComparison.Ordinal)),
_cache.Capacity,
_cache.Hits,
_cache.Misses);
private static double Elapsed(long startedAt) =>
Math.Round(Stopwatch.GetElapsedTime(startedAt).TotalMilliseconds, 1);
/// <summary>Outcome of <see cref="CheckReachabilityAsync"/>.</summary>
internal sealed record ReachabilityResult(
bool Ok,
int? StatusCode,
double ElapsedMs,
int? ConferenceCount,
string? Error,
string Url);
/// <summary>What the API cache holds right now.</summary>
internal sealed record CacheSnapshot(
int Entries,
int Conferences,
int Events,
int Searches,
int Redirects,
int Capacity,
long Hits,
long Misses);
/// <summary>
/// Clears the entire cache.
/// </summary>
public void ClearCache() => _cache.Clear();
/// <summary>
/// Resolves a CDN URL by following redirects and returning the final URL.
/// CCC CDN (cdn.media.ccc.de) does 302 redirects to mirror servers.
/// Some clients (e.g. Android ExoPlayer) struggle with cross-domain redirects.
/// </summary>
public async Task<string> ResolveRedirectAsync(string url, CancellationToken cancellationToken)
{
return await _cache.GetOrCreateAsync(RedirectCacheKey(url), TimeSpan.FromHours(2), async ct =>
{
try
{
var client = _httpClientFactory.CreateClient(RedirectClientName);
using var request = new HttpRequestMessage(HttpMethod.Head, new Uri(url));
using var response = await client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, ct)
.ConfigureAwait(false);
if ((int)response.StatusCode is >= 301 and <= 308
&& response.Headers.Location is { } location)
{
var resolved = location.IsAbsoluteUri
? location.ToString()
: new Uri(new Uri(url), location).ToString();
_logger.LogDebug("Resolved CDN redirect {Url} -> {Resolved}", url, resolved);
return resolved;
}
}
catch (Exception ex) when (ex is not OperationCanceledException)
{
_logger.LogDebug(ex, "Failed to resolve redirect for {Url}, using original", url);
}
return url;
}, cancellationToken);
}
/// <summary>
/// Forgets the cached mirror for <paramref name="url"/> so that the next resolution
/// asks the CDN again. Used when the cached mirror stopped serving the recording.
/// </summary>
public void InvalidateRedirect(string url) => _cache.Remove(RedirectCacheKey(url));
private static string ConferenceCacheKey(string acronym) => $"conf:{acronym}";
private static string RedirectCacheKey(string url) => $"redirect:{url}";
/// <inheritdoc />
public void Dispose()
{
_httpClient.Dispose();
GC.SuppressFinalize(this);
}
}

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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.Linq;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Plugin.Chaosflix.Channel;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
namespace Jellyfin.Plugin.Chaosflix.Api;
/// <summary>
/// Reports what the plugin currently believes to be true, for its configuration page:
/// whether the CCC API answers, when the sync task last ran and what the caches hold.
/// Nothing here is expensive unless it is asked for explicitly.
/// </summary>
[ApiController]
[Route("api/[controller]")]
[Authorize(Policy = ElevationPolicy)]
public class ChaosflixStatusController : ControllerBase
{
/// <summary>
/// Jellyfin's administrator policy. The constant lives in Jellyfin.Api, which plugins
/// do not reference, so the name is repeated here; the server registers it by name.
/// </summary>
private const string ElevationPolicy = "RequiresElevation";
private static readonly HttpClient _probeClient = new() { Timeout = TimeSpan.FromSeconds(30) };
private readonly CccApiClient _apiClient;
private readonly ChaosflixChannel _channel;
private readonly ITaskManager _taskManager;
private readonly ILogger<ChaosflixStatusController> _logger;
/// <summary>
/// Initializes a new instance of the <see cref="ChaosflixStatusController"/> class.
/// </summary>
public ChaosflixStatusController(
CccApiClient apiClient,
ChaosflixChannel channel,
ITaskManager taskManager,
ILogger<ChaosflixStatusController> logger)
{
_apiClient = apiClient;
_channel = channel;
_taskManager = taskManager;
_logger = logger;
}
/// <summary>
/// Returns the plugin's state without touching the network.
/// </summary>
[HttpGet]
public ActionResult<PluginStatus> GetStatus() => BuildStatus();
/// <summary>
/// Asks the configured endpoint whether it answers, and how fast.
/// </summary>
[HttpPost("CheckApi")]
public async Task<ActionResult<ApiCheck>> CheckApi()
{
var result = await _apiClient.CheckReachabilityAsync(HttpContext.RequestAborted).ConfigureAwait(false);
return new ApiCheck(
result.Ok,
result.Url,
result.StatusCode,
result.ElapsedMs,
result.ConferenceCount,
result.Error);
}
/// <summary>
/// Empties every cache the plugin keeps, along the same path a configuration change
/// takes, and returns the state afterwards.
/// </summary>
[HttpPost("ClearCaches")]
public ActionResult<PluginStatus> ClearCaches()
{
var before = BuildStatus();
_apiClient.ClearCache();
_channel.ClearProbeCache();
_channel.InvalidateCachedMediaSources();
_logger.LogInformation(
"Caches cleared from the configuration page: {Api} api entries, {Probe} probes",
before.ApiCache.Entries,
before.ProbeCache.Entries);
return BuildStatus();
}
/// <summary>
/// Resolves one talk the whole way the channel does — API lookup, recording choice,
/// signed proxy url, proxy request, probe — and reports the stage that fails.
/// </summary>
/// <param name="id">A talk guid, slug, channel item id or media.ccc.de url.</param>
[HttpPost("CheckTalk")]
public async Task<ActionResult<TalkCheck>> CheckTalk([FromQuery] string? id)
{
var guid = NormalizeTalkId(id);
if (string.IsNullOrEmpty(guid))
{
return BadRequest("Give a talk guid, slug or media.ccc.de url.");
}
var cancellationToken = HttpContext.RequestAborted;
var stages = new List<TalkCheckStage>();
var started = Stopwatch.GetTimestamp();
var cccEvent = await _apiClient.GetEventAsync(guid, cancellationToken).ConfigureAwait(false);
if (cccEvent?.Recordings is null || cccEvent.Recordings.Count == 0)
{
stages.Add(new TalkCheckStage(
"API lookup",
false,
cccEvent is null
? $"{CccApiClient.BaseUrl}/events/{guid} returned no event"
: "the event has no recordings",
Elapsed(started)));
return Report(guid, null, stages);
}
stages.Add(new TalkCheckStage(
"API lookup",
true,
$"{cccEvent.Title} — {cccEvent.Recordings.Count} recordings",
Elapsed(started)));
started = Stopwatch.GetTimestamp();
var sources = (await _channel
.GetChannelItemMediaInfo($"event:{guid}", cancellationToken)
.ConfigureAwait(false))
.ToList();
if (sources.Count == 0)
{
stages.Add(new TalkCheckStage(
"Recording choice",
false,
"no recording survived the configured quality, format and language preferences",
Elapsed(started)));
return Report(guid, cccEvent.Title, stages);
}
var chosen = sources[0];
stages.Add(new TalkCheckStage(
"Recording choice",
true,
$"{chosen.Name} ({chosen.Container}), {sources.Count} versions offered",
Elapsed(started)));
var proxyUrl = chosen.Path ?? string.Empty;
var signed = ProxyUrl.IsSignedCorrectly(proxyUrl);
stages.Add(new TalkCheckStage(
"Signed proxy url",
signed,
signed
? ProxyUrl.Redact(proxyUrl)
: $"the url this plugin just produced does not carry a valid signature: {ProxyUrl.Redact(proxyUrl)}",
0));
if (!signed)
{
return Report(guid, cccEvent.Title, stages);
}
started = Stopwatch.GetTimestamp();
var proxy = await HeadProxyAsync(proxyUrl, cancellationToken).ConfigureAwait(false);
stages.Add(proxy with { ElapsedMs = Elapsed(started) });
if (!proxy.Ok)
{
return Report(guid, cccEvent.Title, stages);
}
var streams = chosen.MediaStreams ?? new List<MediaStream>();
stages.Add(new TalkCheckStage(
"Probe",
streams.Count > 0,
streams.Count > 0
? string.Join(", ", streams.Select(s => $"{s.Type}@{s.Index} {s.Codec}"))
: "ffprobe reported no streams for the chosen recording",
0));
return Report(guid, cccEvent.Title, stages);
}
private static TalkCheck Report(string guid, string? title, List<TalkCheckStage> stages)
{
var failed = stages.FirstOrDefault(s => !s.Ok);
return new TalkCheck(failed is null, guid, title, failed?.Name, stages);
}
private async Task<TalkCheckStage> HeadProxyAsync(string proxyUrl, CancellationToken cancellationToken)
{
try
{
using var request = new HttpRequestMessage(HttpMethod.Head, proxyUrl);
using var response = await _probeClient
.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken)
.ConfigureAwait(false);
var size = response.Content.Headers.ContentLength;
var length = size.HasValue
? string.Create(CultureInfo.InvariantCulture, $"{size.Value / 1048576.0:N1} MiB")
: "no length announced";
return new TalkCheckStage(
"Proxy",
response.IsSuccessStatusCode,
response.IsSuccessStatusCode
? $"{(int)response.StatusCode} {response.Content.Headers.ContentType}, {length}"
: $"the proxy answered {(int)response.StatusCode} {response.ReasonPhrase}",
0);
}
catch (Exception ex) when (ex is not OperationCanceledException)
{
_logger.LogWarning(ex, "Talk check could not reach the proxy");
return new TalkCheckStage("Proxy", false, ex.Message, 0);
}
}
private PluginStatus BuildStatus()
{
var cache = _apiClient.GetCacheSnapshot();
var probe = _channel.GetProbeCacheStats();
return new PluginStatus(
Plugin.Instance?.Version?.ToString() ?? "unknown",
CccApiClient.BaseUrl,
string.IsNullOrWhiteSpace(Plugin.Instance?.Configuration.ApiBaseUrl),
SyncStatus(),
new CacheStatus(
cache.Entries,
cache.Capacity,
cache.Conferences,
cache.Events,
cache.Searches,
cache.Redirects,
cache.Hits,
cache.Misses,
HitRate(cache.Hits, cache.Misses)),
new ProbeStatus(
probe.Entries,
probe.Capacity,
probe.Hits,
probe.Misses,
HitRate(probe.Hits, probe.Misses),
probe.ServedItems));
}
private SyncStatus SyncStatus()
{
var worker = _taskManager.ScheduledTasks
.FirstOrDefault(t => string.Equals(t.ScheduledTask.Key, ChaosflixSyncTask.TaskKey, StringComparison.Ordinal));
if (worker is null)
{
return new SyncStatus(false, null, null, null, null, null);
}
var last = worker.LastExecutionResult;
return new SyncStatus(
true,
worker.State.ToString(),
last?.StartTimeUtc,
last is null ? null : Math.Round((last.EndTimeUtc - last.StartTimeUtc).TotalSeconds, 1),
last?.Status.ToString(),
last?.ErrorMessage);
}
private static double? HitRate(long hits, long misses) =>
hits + misses == 0 ? null : Math.Round(100.0 * hits / (hits + misses), 1);
private static double Elapsed(long startedAt) =>
Math.Round(Stopwatch.GetElapsedTime(startedAt).TotalMilliseconds, 1);
/// <summary>
/// Reduces whatever a reader pasted to the identifier the API takes: a bare guid, a
/// channel item id, or the last segment of a media.ccc.de url.
/// </summary>
internal static string NormalizeTalkId(string? id)
{
var value = id?.Trim() ?? string.Empty;
if (value.Length == 0)
{
return string.Empty;
}
var query = value.IndexOfAny(['?', '#']);
if (query >= 0)
{
value = value[..query];
}
value = value.TrimEnd('/');
var slash = value.LastIndexOf('/');
if (slash >= 0)
{
value = value[(slash + 1)..];
}
var colon = value.LastIndexOf(':');
return colon >= 0 ? value[(colon + 1)..] : value;
}
}
/// <summary>The plugin's state, as the configuration page shows it.</summary>
/// <param name="Version">Plugin version.</param>
/// <param name="ApiBaseUrl">Endpoint requests go to.</param>
/// <param name="ApiBaseUrlIsDefault">Whether that is the public default rather than a configured mirror.</param>
/// <param name="Sync">The scheduled sync task's last run.</param>
/// <param name="ApiCache">What the CCC API cache holds.</param>
/// <param name="ProbeCache">What the probe cache holds.</param>
public record PluginStatus(
string Version,
string ApiBaseUrl,
bool ApiBaseUrlIsDefault,
SyncStatus Sync,
CacheStatus ApiCache,
ProbeStatus ProbeCache);
/// <summary>The sync task's last run.</summary>
/// <param name="Registered">Whether the server knows the task at all.</param>
/// <param name="State">Idle, running or cancelled.</param>
/// <param name="LastRunUtc">When the last run started.</param>
/// <param name="DurationSeconds">How long it took.</param>
/// <param name="LastResult">Completed, failed, aborted or cancelled.</param>
/// <param name="Error">The failure message, when there was one.</param>
public record SyncStatus(
bool Registered,
string? State,
DateTime? LastRunUtc,
double? DurationSeconds,
string? LastResult,
string? Error);
/// <summary>What the CCC API cache holds.</summary>
/// <param name="Entries">Entries that would still be served.</param>
/// <param name="Capacity">Entries kept before the soonest-expiring ones are evicted.</param>
/// <param name="Conferences">Conference list and conference detail entries.</param>
/// <param name="Events">Talk detail entries.</param>
/// <param name="Searches">Cached searches.</param>
/// <param name="Redirects">Resolved CDN mirrors.</param>
/// <param name="Hits">Reads answered from the cache since the server started.</param>
/// <param name="Misses">Reads that had to call the API.</param>
/// <param name="HitRatePercent">Hits as a percentage, or null when nothing was read yet.</param>
public record CacheStatus(
int Entries,
int Capacity,
int Conferences,
int Events,
int Searches,
int Redirects,
long Hits,
long Misses,
double? HitRatePercent);
/// <summary>What the probe cache holds.</summary>
/// <param name="Entries">Probed stream layouts still valid.</param>
/// <param name="Capacity">Entries kept before the oldest are evicted.</param>
/// <param name="Hits">Playbacks answered from a cached probe.</param>
/// <param name="Misses">Playbacks that had to run ffprobe.</param>
/// <param name="HitRatePercent">Hits as a percentage, or null when nothing was probed yet.</param>
/// <param name="ServedItems">Talks whose media sources a configuration change would invalidate.</param>
public record ProbeStatus(
int Entries,
int Capacity,
long Hits,
long Misses,
double? HitRatePercent,
int ServedItems);
/// <summary>Outcome of the explicit endpoint check.</summary>
/// <param name="Ok">Whether the endpoint answered with a success status.</param>
/// <param name="Url">The url that was asked.</param>
/// <param name="StatusCode">The HTTP status, when there was an answer.</param>
/// <param name="ElapsedMs">Round-trip time.</param>
/// <param name="ConferenceCount">Conferences the endpoint listed.</param>
/// <param name="Error">Why it failed, when it did.</param>
public record ApiCheck(
bool Ok,
string Url,
int? StatusCode,
double ElapsedMs,
int? ConferenceCount,
string? Error);
/// <summary>Outcome of resolving one talk end to end.</summary>
/// <param name="Ok">Whether every stage passed.</param>
/// <param name="TalkId">The identifier that was resolved.</param>
/// <param name="Title">The talk's title, once the API answered.</param>
/// <param name="FailedStage">The first stage that failed.</param>
/// <param name="Stages">Every stage that was reached, in order.</param>
public record TalkCheck(
bool Ok,
string TalkId,
string? Title,
string? FailedStage,
IReadOnlyList<TalkCheckStage> Stages);
/// <summary>One stage of the talk check.</summary>
/// <param name="Name">Stage name.</param>
/// <param name="Ok">Whether it passed.</param>
/// <param name="Detail">What it found, or why it failed.</param>
/// <param name="ElapsedMs">How long it took.</param>
public record TalkCheckStage(string Name, bool Ok, string Detail, double ElapsedMs);

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using System;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Plugin.Chaosflix.Api.Models;
using Jellyfin.Plugin.Chaosflix.Configuration;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
namespace Jellyfin.Plugin.Chaosflix.Api;
/// <summary>
/// API controller that acts as a transparent reverse proxy for CCC recordings.
/// Proxies CDN content with full HTTP Range request support, enabling seeking.
/// By serving content through a local endpoint, the Jellyfin server treats it
/// as a non-remote source and can use DirectStream instead of forced transcoding.
/// </summary>
[ApiController]
[Route("api/[controller]")]
public class ChaosflixStreamController : ControllerBase
{
private readonly CccApiClient _apiClient;
private readonly ILogger<ChaosflixStreamController> _logger;
private static readonly HttpClient _proxyClient = new HttpClient { Timeout = TimeSpan.FromMinutes(60) };
/// <summary>
/// Initializes a new instance of the <see cref="ChaosflixStreamController"/> class.
/// </summary>
public ChaosflixStreamController(CccApiClient apiClient, ILogger<ChaosflixStreamController> logger)
{
_apiClient = apiClient;
_logger = logger;
}
/// <summary>
/// Proxies a CCC recording from the CDN with full Range request support.
/// This enables seeking in both browser and Android clients.
/// </summary>
/// <remarks>
/// The second route is what subtitles use. Their signature and filename sit in
/// the path so the url ends in <c>.srt</c> or <c>.vtt</c>: Jellyfin and its
/// clients derive a subtitle's format from the extension of the url they are
/// handed, and a query string would end up in <c>Path.GetExtension</c>.
/// </remarks>
[HttpGet("proxy/{eventGuid}")]
[HttpHead("proxy/{eventGuid}")]
[HttpGet("proxy/{eventGuid}/{signature}/{filename}")]
[HttpHead("proxy/{eventGuid}/{signature}/{filename}")]
public async Task ProxyStream(
[FromRoute] string eventGuid,
[FromRoute] string? signature = null,
[FromRoute] string? filename = null,
[FromQuery] string? recordingFolder = null,
[FromQuery] string? language = null,
[FromQuery(Name = ProxySignature.QueryParameter)] string? t = null)
{
// The endpoint is anonymous because the server's own ffmpeg fetches this
// url; the signature is what keeps it from being a general purpose relay.
if (!ProxySignature.Verify(eventGuid, recordingFolder, language, signature ?? t, filename))
{
_logger.LogWarning("Rejected unsigned proxy request for {EventGuid}", eventGuid);
Response.StatusCode = 401;
return;
}
var cancellationToken = HttpContext.RequestAborted;
var cccEvent = await _apiClient.GetEventAsync(eventGuid, cancellationToken).ConfigureAwait(false);
if (cccEvent?.Recordings == null)
{
Response.StatusCode = 404;
return;
}
CccRecording? recording;
if (filename != null)
{
// Subtitles share the folder "" across every language and format, so the
// filename is the only thing that identifies one; it is signed like the rest.
recording = cccEvent.Recordings
.FirstOrDefault(r => r.Filename.Equals(filename, StringComparison.Ordinal));
}
else
{
var videoRecordings = cccEvent.Recordings
.Where(r => r.MimeType.StartsWith("video/", StringComparison.OrdinalIgnoreCase))
.ToList();
if (videoRecordings.Count == 0)
{
Response.StatusCode = 404;
return;
}
recording = videoRecordings.FirstOrDefault(r =>
(recordingFolder == null || r.Folder.Equals(recordingFolder, StringComparison.OrdinalIgnoreCase)) &&
(language == null || r.Language.Equals(language, StringComparison.OrdinalIgnoreCase)));
recording ??= videoRecordings
.OrderByDescending(r => r.MimeType.Contains("mp4", StringComparison.OrdinalIgnoreCase) ? 1 : 0)
.ThenByDescending(r => r.HighQuality ? 1 : 0)
.First();
}
if (recording == null)
{
Response.StatusCode = 404;
return;
}
var originalUrl = recording.RecordingUrl;
var resolvedUrl = await _apiClient.ResolveRedirectAsync(originalUrl, cancellationToken)
.ConfigureAwait(false);
_logger.LogDebug("Proxying {EventGuid} from {Url}", eventGuid, resolvedUrl);
RangeHeaderValue? range = null;
if (Request.Headers.TryGetValue("Range", out var rangeHeader)
&& !RangeHeaderValue.TryParse(rangeHeader.ToString(), out range))
{
// RFC 9110: a Range header with invalid syntax is ignored, not rejected.
_logger.LogDebug("Ignoring malformed Range header {Range}", rangeHeader.ToString());
range = null;
}
var method = HttpContext.Request.Method == "HEAD" ? HttpMethod.Head : HttpMethod.Get;
var upstreamResponse = await SendUpstreamAsync(method, resolvedUrl, range, cancellationToken)
.ConfigureAwait(false);
// A cached mirror can die long before its two-hour cache entry expires; drop it
// and give the CDN one chance to hand out a mirror that still has the recording.
if (upstreamResponse?.IsSuccessStatusCode != true
&& !string.Equals(resolvedUrl, originalUrl, StringComparison.Ordinal))
{
_logger.LogWarning(
"Mirror {Url} failed for {EventGuid} ({Status}), retrying via {Original}",
resolvedUrl,
eventGuid,
upstreamResponse?.StatusCode.ToString() ?? "no response",
originalUrl);
upstreamResponse?.Dispose();
_apiClient.InvalidateRedirect(originalUrl);
upstreamResponse = await SendUpstreamAsync(method, originalUrl, range, cancellationToken)
.ConfigureAwait(false);
}
if (upstreamResponse == null)
{
Response.StatusCode = 502;
return;
}
using var finalResponse = upstreamResponse;
// Set response status (200 or 206)
Response.StatusCode = (int)finalResponse.StatusCode;
if (!finalResponse.IsSuccessStatusCode)
{
// An error body is not media, so it gets neither Accept-Ranges nor a video type.
// The unsatisfied-range of a 416 is the exception: RFC 9110 has clients read the
// real size off it and ask again for a range that fits (#104).
if (finalResponse.StatusCode == HttpStatusCode.RequestedRangeNotSatisfiable
&& finalResponse.Content.Headers.ContentRange != null)
{
Response.Headers["Content-Range"] = finalResponse.Content.Headers.ContentRange.ToString();
}
return;
}
// Forward relevant headers
if (finalResponse.Content.Headers.ContentLength.HasValue)
{
Response.ContentLength = finalResponse.Content.Headers.ContentLength.Value;
}
Response.Headers["Accept-Ranges"] = "bytes";
if (filename != null)
{
// The subtitle mirrors hand out .srt as application/octet-stream, which
// no client renders as a caption track; the API's own mime type is the
// one that describes the bytes.
Response.ContentType = recording.MimeType;
}
else if (finalResponse.Content.Headers.ContentType != null)
{
Response.ContentType = finalResponse.Content.Headers.ContentType.ToString();
}
else
{
Response.ContentType = recording.MimeType.Contains("mp4", StringComparison.OrdinalIgnoreCase)
? "video/mp4" : "video/webm";
}
if (finalResponse.Content.Headers.ContentRange != null)
{
Response.Headers["Content-Range"] = finalResponse.Content.Headers.ContentRange.ToString();
}
// Stream body (skip for HEAD requests)
if (HttpContext.Request.Method != "HEAD")
{
try
{
await using var upstreamStream = await finalResponse.Content.ReadAsStreamAsync(cancellationToken)
.ConfigureAwait(false);
await upstreamStream.CopyToAsync(Response.Body, cancellationToken).ConfigureAwait(false);
}
catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
{
// ffmpeg being killed at the end of a transcode, a player seeking or a
// browser tab closing all hang up mid-file: that is how a proxied media
// response normally ends. Letting it unwind would reach Jellyfin's
// exception middleware with the response already on the wire, which can
// only log a warning about it (#58).
_logger.LogDebug("Client aborted the stream for {EventGuid}", eventGuid);
}
}
}
private async Task<HttpResponseMessage?> SendUpstreamAsync(
HttpMethod method,
string url,
RangeHeaderValue? range,
CancellationToken cancellationToken)
{
using var request = new HttpRequestMessage(method, url);
if (range != null)
{
request.Headers.Range = range;
}
try
{
return await _proxyClient
.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken)
.ConfigureAwait(false);
}
catch (HttpRequestException ex)
{
_logger.LogWarning(ex, "Upstream request to {Url} failed", url);
return null;
}
}
}

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using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace Jellyfin.Plugin.Chaosflix.Api;
/// <summary>
/// Simple in-memory cache with TTL expiration, a capacity bound and stampede protection.
/// </summary>
public class MemoryCache
{
/// <summary>
/// Default number of entries kept before the soonest-expiring ones are evicted.
/// </summary>
internal const int DefaultCapacity = 256;
private readonly ConcurrentDictionary<string, CacheEntry> _cache = new();
private readonly ConcurrentDictionary<string, Gate> _locks = new();
private readonly TimeProvider _timeProvider;
private readonly int _capacity;
private long _hits;
private long _misses;
/// <summary>
/// Initializes a new instance of the <see cref="MemoryCache"/> class.
/// </summary>
/// <param name="capacity">Maximum number of entries to keep.</param>
/// <param name="timeProvider">Clock used for expiry, for tests.</param>
public MemoryCache(int capacity = DefaultCapacity, TimeProvider? timeProvider = null)
{
ArgumentOutOfRangeException.ThrowIfLessThan(capacity, 1);
_capacity = capacity;
_timeProvider = timeProvider ?? TimeProvider.System;
}
internal int Count => _cache.Count;
internal int LockCount => _locks.Count;
internal int Capacity => _capacity;
internal long Hits => Interlocked.Read(ref _hits);
internal long Misses => Interlocked.Read(ref _misses);
/// <summary>
/// Counts the entries that would still be served. Expired entries are only dropped
/// when something is written, so <see cref="Count"/> can outrun what is usable.
/// </summary>
internal int CountLive(Func<string, bool>? predicate = null)
{
var now = _timeProvider.GetUtcNow();
return _cache.Count(entry =>
entry.Value.ExpiresAt > now && (predicate is null || predicate(entry.Key)));
}
/// <summary>
/// Gets or creates a cached value.
/// </summary>
public async Task<T> GetOrCreateAsync<T>(string key, TimeSpan ttl, Func<CancellationToken, Task<T>> factory, CancellationToken cancellationToken)
{
if (TryGet<T>(key, out var hit))
{
Interlocked.Increment(ref _hits);
return hit;
}
var gate = RentGate(key);
try
{
await gate.Semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
try
{
if (TryGet<T>(key, out hit))
{
Interlocked.Increment(ref _hits);
return hit;
}
Interlocked.Increment(ref _misses);
var value = await factory(cancellationToken).ConfigureAwait(false);
_cache[key] = new CacheEntry(value!, _timeProvider.GetUtcNow().Add(ttl));
Evict();
return value;
}
finally
{
gate.Semaphore.Release();
}
}
finally
{
ReturnGate(key, gate);
}
}
/// <summary>
/// Invalidates a single cached entry.
/// </summary>
public void Remove(string key) => _cache.TryRemove(key, out _);
/// <summary>
/// Invalidates all cached entries and releases the per-key locks that are idle.
/// </summary>
public void Clear()
{
_cache.Clear();
foreach (var pair in _locks)
{
TryDropGate(pair.Key, pair.Value);
}
}
private bool TryGet<T>(string key, out T value)
{
if (_cache.TryGetValue(key, out var entry) && entry.ExpiresAt > _timeProvider.GetUtcNow())
{
value = (T)entry.Value;
return true;
}
value = default!;
return false;
}
private void Evict()
{
var now = _timeProvider.GetUtcNow();
foreach (var entry in _cache)
{
if (entry.Value.ExpiresAt <= now)
{
_cache.TryRemove(entry.Key, out _);
}
}
while (_cache.Count > _capacity)
{
var oldest = _cache.OrderBy(e => e.Value.ExpiresAt).Select(e => e.Key).FirstOrDefault();
if (oldest is null || !_cache.TryRemove(oldest, out _))
{
break;
}
}
}
// A gate lives only as long as someone is using it, so the lock dictionary stays
// bounded by the number of in-flight calls instead of the number of keys ever seen.
private Gate RentGate(string key)
{
while (true)
{
var gate = _locks.GetOrAdd(key, _ => new Gate());
lock (gate)
{
if (!gate.Dropped)
{
gate.Users++;
return gate;
}
}
}
}
private void ReturnGate(string key, Gate gate)
{
lock (gate)
{
gate.Users--;
DropIfIdle(key, gate);
}
}
private void TryDropGate(string key, Gate gate)
{
lock (gate)
{
DropIfIdle(key, gate);
}
}
private void DropIfIdle(string key, Gate gate)
{
if (gate.Users > 0 || gate.Dropped)
{
return;
}
gate.Dropped = true;
_locks.TryRemove(new KeyValuePair<string, Gate>(key, gate));
gate.Semaphore.Dispose();
}
private sealed record CacheEntry(object Value, DateTimeOffset ExpiresAt);
private sealed class Gate
{
public SemaphoreSlim Semaphore { get; } = new(1, 1);
public int Users { get; set; }
public bool Dropped { get; set; }
}
}

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using System;
using System.Collections.Generic;
using System.Text.Json.Serialization;
namespace Jellyfin.Plugin.Chaosflix.Api.Models;
/// <summary>
/// CCC API conference (e.g. 38C3, Camp 2019).
/// </summary>
public class CccConference
{
/// <summary>Gets or sets the acronym (e.g. "38c3").</summary>
[JsonPropertyName("acronym")]
public string Acronym { get; set; } = string.Empty;
/// <summary>Gets or sets the title.</summary>
[JsonPropertyName("title")]
public string Title { get; set; } = string.Empty;
/// <summary>Gets or sets the description.</summary>
[JsonPropertyName("description")]
public string? Description { get; set; }
/// <summary>Gets or sets the slug.</summary>
[JsonPropertyName("slug")]
public string Slug { get; set; } = string.Empty;
/// <summary>Gets or sets the logo URL.</summary>
[JsonPropertyName("logo_url")]
public string? LogoUrl { get; set; }
/// <summary>Gets or sets the aspect ratio.</summary>
[JsonPropertyName("aspect_ratio")]
public string? AspectRatio { get; set; }
/// <summary>Gets or sets the API URL.</summary>
[JsonPropertyName("url")]
public string Url { get; set; } = string.Empty;
/// <summary>Gets or sets the last released event date.</summary>
[JsonPropertyName("event_last_released_at")]
public DateTimeOffset? EventLastReleasedAt { get; set; }
/// <summary>Gets or sets the events (only present in detail response).</summary>
[JsonPropertyName("events")]
public List<CccEvent>? Events { get; set; }
}
/// <summary>
/// Wrapper for conference list response.
/// </summary>
public class CccConferencesResponse
{
/// <summary>Gets or sets the conferences.</summary>
[JsonPropertyName("conferences")]
public List<CccConference> Conferences { get; set; } = new();
}

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using System;
using System.Collections.Generic;
using System.Text.Json.Serialization;
namespace Jellyfin.Plugin.Chaosflix.Api.Models;
/// <summary>
/// CCC API event (a single talk/recording).
/// </summary>
public class CccEvent
{
/// <summary>Gets or sets the GUID.</summary>
[JsonPropertyName("guid")]
public string Guid { get; set; } = string.Empty;
/// <summary>Gets or sets the title.</summary>
[JsonPropertyName("title")]
public string Title { get; set; } = string.Empty;
/// <summary>Gets or sets the subtitle.</summary>
[JsonPropertyName("subtitle")]
public string? Subtitle { get; set; }
/// <summary>Gets or sets the slug.</summary>
[JsonPropertyName("slug")]
public string Slug { get; set; } = string.Empty;
/// <summary>Gets or sets the description.</summary>
[JsonPropertyName("description")]
public string? Description { get; set; }
/// <summary>Gets or sets the original language.</summary>
[JsonPropertyName("original_language")]
public string? OriginalLanguage { get; set; }
/// <summary>Gets or sets the speakers.</summary>
[JsonPropertyName("persons")]
public List<string> Persons { get; set; } = new();
/// <summary>Gets or sets the tags.</summary>
[JsonPropertyName("tags")]
public List<string> Tags { get; set; } = new();
/// <summary>Gets or sets the view count.</summary>
[JsonPropertyName("view_count")]
public int ViewCount { get; set; }
/// <summary>Gets or sets the event date.</summary>
[JsonPropertyName("date")]
public DateTimeOffset? Date { get; set; }
/// <summary>Gets or sets the release date.</summary>
[JsonPropertyName("release_date")]
public DateTimeOffset? ReleaseDate { get; set; }
/// <summary>Gets or sets the duration in seconds.</summary>
[JsonPropertyName("duration")]
public int Duration { get; set; }
/// <summary>Gets or sets the thumbnail URL.</summary>
[JsonPropertyName("thumb_url")]
public string? ThumbUrl { get; set; }
/// <summary>Gets or sets the poster URL.</summary>
[JsonPropertyName("poster_url")]
public string? PosterUrl { get; set; }
/// <summary>Gets or sets the frontend link.</summary>
[JsonPropertyName("frontend_link")]
public string? FrontendLink { get; set; }
/// <summary>Gets or sets the API URL.</summary>
[JsonPropertyName("url")]
public string Url { get; set; } = string.Empty;
/// <summary>Gets or sets the conference title.</summary>
[JsonPropertyName("conference_title")]
public string? ConferenceTitle { get; set; }
/// <summary>Gets or sets the conference API URL.</summary>
[JsonPropertyName("conference_url")]
public string? ConferenceUrl { get; set; }
/// <summary>Gets or sets the recordings (only in detail response).</summary>
[JsonPropertyName("recordings")]
public List<CccRecording>? Recordings { get; set; }
/// <summary>Gets or sets the related events.</summary>
[JsonPropertyName("related")]
public List<CccRelatedEvent>? Related { get; set; }
}
/// <summary>
/// Wrapper for event search response.
/// </summary>
public class CccEventsResponse
{
/// <summary>Gets or sets the events.</summary>
[JsonPropertyName("events")]
public List<CccEvent> Events { get; set; } = new();
}

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using System.Collections.Generic;
using System.Text.Json.Serialization;
namespace Jellyfin.Plugin.Chaosflix.Api.Models;
/// <summary>
/// A conference as streaming.media.ccc.de describes it while it is running. The shape
/// follows the generator at voc/streaming-website (view/streams-json-v2.php); outside a
/// congress the endpoint answers with an empty list.
/// </summary>
public class CccLiveConference
{
/// <summary>Gets or sets the conference title.</summary>
[JsonPropertyName("conference")]
public string Conference { get; set; } = string.Empty;
/// <summary>Gets or sets the acronym, e.g. "39c3".</summary>
[JsonPropertyName("slug")]
public string Slug { get; set; } = string.Empty;
/// <summary>
/// Gets or sets a value indicating whether anything is on air right now. The site sets
/// it from the rooms' schedules, which is what decides whether the channel offers a
/// live folder at all.
/// </summary>
[JsonPropertyName("isCurrentlyStreaming")]
public bool IsCurrentlyStreaming { get; set; }
/// <summary>Gets or sets the room groups.</summary>
[JsonPropertyName("groups")]
public List<CccLiveGroup> Groups { get; set; } = new();
}
/// <summary>A named set of rooms, e.g. "Live" or "Selfhosted".</summary>
public class CccLiveGroup
{
/// <summary>Gets or sets the group name.</summary>
[JsonPropertyName("group")]
public string Group { get; set; } = string.Empty;
/// <summary>Gets or sets the rooms.</summary>
[JsonPropertyName("rooms")]
public List<CccLiveRoom> Rooms { get; set; } = new();
}
/// <summary>One room with its stream variants and what is on in it.</summary>
public class CccLiveRoom
{
/// <summary>Gets or sets the room slug, e.g. "halla".</summary>
[JsonPropertyName("slug")]
public string Slug { get; set; } = string.Empty;
/// <summary>Gets or sets the display name, e.g. "Adams".</summary>
[JsonPropertyName("display")]
public string Display { get; set; } = string.Empty;
/// <summary>Gets or sets the thumbnail url.</summary>
[JsonPropertyName("thumb")]
public string? Thumb { get; set; }
/// <summary>Gets or sets the room's page on the streaming site.</summary>
[JsonPropertyName("link")]
public string? Link { get; set; }
/// <summary>Gets or sets what is running now and next.</summary>
[JsonPropertyName("talks")]
public CccLiveTalks? Talks { get; set; }
/// <summary>Gets or sets the stream variants.</summary>
[JsonPropertyName("streams")]
public List<CccLiveStreamVariant> Streams { get; set; } = new();
}
/// <summary>The talk on air and the one after it; both are null between talks.</summary>
public class CccLiveTalks
{
/// <summary>Gets or sets the talk currently on air.</summary>
[JsonPropertyName("current")]
public CccLiveTalk? Current { get; set; }
/// <summary>Gets or sets the next talk.</summary>
[JsonPropertyName("next")]
public CccLiveTalk? Next { get; set; }
}
/// <summary>A scheduled talk, as the streaming site reports it.</summary>
public class CccLiveTalk
{
/// <summary>Gets or sets the title.</summary>
[JsonPropertyName("title")]
public string? Title { get; set; }
/// <summary>Gets or sets the speakers, already joined by the site.</summary>
[JsonPropertyName("speaker")]
public string? Speaker { get; set; }
}
/// <summary>
/// One way to watch a room: a resolution, a language and a player type. "native" is the
/// floor language, "translated" an interpreter's channel.
/// </summary>
public class CccLiveStreamVariant
{
/// <summary>Gets or sets the variant slug, e.g. "hd-native".</summary>
[JsonPropertyName("slug")]
public string Slug { get; set; } = string.Empty;
/// <summary>Gets or sets the human readable description.</summary>
[JsonPropertyName("display")]
public string Display { get; set; } = string.Empty;
/// <summary>Gets or sets the player type: video, slides, audio, music or dash.</summary>
[JsonPropertyName("type")]
public string Type { get; set; } = string.Empty;
/// <summary>Gets or sets a value indicating whether this is an interpreter's channel.</summary>
[JsonPropertyName("isTranslated")]
public bool IsTranslated { get; set; }
/// <summary>Gets or sets width and height, absent for audio.</summary>
[JsonPropertyName("videoSize")]
public List<int>? VideoSize { get; set; }
/// <summary>Gets or sets the urls by protocol ("hls", "webm", "dash", "mp3", "opus").</summary>
[JsonPropertyName("urls")]
public Dictionary<string, CccLiveStreamUrl> Urls { get; set; } = new();
}
/// <summary>One protocol's url for a stream variant.</summary>
public class CccLiveStreamUrl
{
/// <summary>Gets or sets the description the site shows for it.</summary>
[JsonPropertyName("display")]
public string? Display { get; set; }
/// <summary>Gets or sets the technical description, e.g. "hls".</summary>
[JsonPropertyName("tech")]
public string? Tech { get; set; }
/// <summary>Gets or sets the stream url.</summary>
[JsonPropertyName("url")]
public string Url { get; set; } = string.Empty;
}

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using System;
using System.Text.Json.Serialization;
namespace Jellyfin.Plugin.Chaosflix.Api.Models;
/// <summary>
/// CCC API recording (a specific video/audio file for an event).
/// </summary>
public class CccRecording
{
/// <summary>
/// Gets or sets the file size in MB. Null on subtitle recordings, which the
/// API publishes without size, length or dimensions.
/// </summary>
[JsonPropertyName("size")]
public int? Size { get; set; }
/// <summary>Gets or sets the length in seconds; null on subtitle recordings.</summary>
[JsonPropertyName("length")]
public int? Length { get; set; }
/// <summary>Gets or sets the MIME type.</summary>
[JsonPropertyName("mime_type")]
public string MimeType { get; set; } = string.Empty;
/// <summary>Gets or sets the language.</summary>
[JsonPropertyName("language")]
public string Language { get; set; } = string.Empty;
/// <summary>Gets or sets the filename.</summary>
[JsonPropertyName("filename")]
public string Filename { get; set; } = string.Empty;
/// <summary>Gets or sets the state.</summary>
[JsonPropertyName("state")]
public string State { get; set; } = string.Empty;
/// <summary>Gets or sets the folder (e.g. "h264-hd", "webm-sd").</summary>
[JsonPropertyName("folder")]
public string Folder { get; set; } = string.Empty;
/// <summary>Gets or sets whether this is the high quality version.</summary>
[JsonPropertyName("high_quality")]
public bool HighQuality { get; set; }
/// <summary>Gets or sets the width; null on subtitle recordings.</summary>
[JsonPropertyName("width")]
public int? Width { get; set; }
/// <summary>Gets or sets the height; null on subtitle recordings.</summary>
[JsonPropertyName("height")]
public int? Height { get; set; }
/// <summary>Gets or sets the direct recording URL.</summary>
[JsonPropertyName("recording_url")]
public string RecordingUrl { get; set; } = string.Empty;
/// <summary>Gets or sets the API URL.</summary>
[JsonPropertyName("url")]
public string Url { get; set; } = string.Empty;
/// <summary>Gets or sets the updated timestamp.</summary>
[JsonPropertyName("updated_at")]
public DateTimeOffset? UpdatedAt { get; set; }
}
/// <summary>
/// Related event reference.
/// </summary>
public class CccRelatedEvent
{
/// <summary>Gets or sets the related event GUID.</summary>
[JsonPropertyName("event_guid")]
public string EventGuid { get; set; } = string.Empty;
/// <summary>Gets or sets the relationship weight.</summary>
[JsonPropertyName("weight")]
public int Weight { get; set; }
}

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using System;
using System.Globalization;
using System.Security.Cryptography;
using System.Text;
namespace Jellyfin.Plugin.Chaosflix.Api;
/// <summary>
/// Signs the proxy URLs the channel hands out, so the endpoint only serves
/// recordings this plugin selected. Without a signature anyone who can reach
/// the server could stream arbitrary CCC recordings through it.
/// </summary>
public static class ProxySignature
{
/// <summary>Query parameter carrying the signature.</summary>
public const string QueryParameter = "t";
/// <summary>
/// Secret for this server process. It is deliberately not persisted: media
/// sources are handed out per playback, so a restart simply means the next
/// request gets a freshly signed url, and nothing has to be stored or
/// migrated.
/// </summary>
public static string Secret { get; } = Guid.NewGuid().ToString("N");
/// <summary>
/// Signs one recording. The signature covers exactly the parameters the
/// controller acts on, so none of them can be swapped afterwards.
/// </summary>
public static string Create(string eventGuid, string? recordingFolder, string? language, string? filename = null)
{
var payload = string.Create(
CultureInfo.InvariantCulture,
$"{eventGuid}\n{recordingFolder ?? string.Empty}\n{language ?? string.Empty}\n{filename ?? string.Empty}");
var hash = HMACSHA256.HashData(Encoding.UTF8.GetBytes(Secret), Encoding.UTF8.GetBytes(payload));
return Convert.ToHexStringLower(hash);
}
/// <summary>
/// Verifies a signature in constant time.
/// </summary>
public static bool Verify(string eventGuid, string? recordingFolder, string? language, string? signature, string? filename = null)
{
if (string.IsNullOrEmpty(signature))
{
return false;
}
var expected = Create(eventGuid, recordingFolder, language, filename);
return CryptographicOperations.FixedTimeEquals(
Encoding.UTF8.GetBytes(expected),
Encoding.UTF8.GetBytes(signature));
}
}

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using System;
using System.Collections.Generic;
using System.Linq;
namespace Jellyfin.Plugin.Chaosflix.Api;
/// <summary>
/// Reads back a proxy url the channel handed out, so a diagnostic can check it and show
/// it without handing the reader a url they could stream through.
/// </summary>
internal static class ProxyUrl
{
private const string FolderParameter = "recordingFolder";
private const string LanguageParameter = "language";
/// <summary>
/// Renders the url without its signature. The result is rebuilt from the parts that
/// were understood rather than edited in place, so nothing of the signature can
/// survive a url shaped differently than expected.
/// </summary>
internal static string Redact(string url)
{
if (!Uri.TryCreate(url, UriKind.Absolute, out var uri))
{
return "<unparseable proxy url>";
}
var query = Parse(uri);
var parts = new List<string>();
if (query.TryGetValue(FolderParameter, out var folder))
{
parts.Add($"{FolderParameter}={folder}");
}
if (query.TryGetValue(LanguageParameter, out var language))
{
parts.Add($"{LanguageParameter}={language}");
}
parts.Add($"{ProxySignature.QueryParameter}=<redacted>");
return $"{uri.GetLeftPart(UriPartial.Path)}?{string.Join('&', parts)}";
}
/// <summary>
/// Whether the url carries a signature the proxy endpoint would accept for exactly
/// the recording the url names.
/// </summary>
internal static bool IsSignedCorrectly(string url)
{
if (!Uri.TryCreate(url, UriKind.Absolute, out var uri))
{
return false;
}
var guid = uri.Segments.LastOrDefault()?.TrimEnd('/');
if (string.IsNullOrEmpty(guid))
{
return false;
}
var query = Parse(uri);
query.TryGetValue(ProxySignature.QueryParameter, out var signature);
return ProxySignature.Verify(
Uri.UnescapeDataString(guid),
query.GetValueOrDefault(FolderParameter),
query.GetValueOrDefault(LanguageParameter),
signature);
}
private static Dictionary<string, string> Parse(Uri uri)
{
var query = new Dictionary<string, string>(StringComparer.Ordinal);
foreach (var pair in uri.Query.TrimStart('?').Split('&', StringSplitOptions.RemoveEmptyEntries))
{
var separator = pair.IndexOf('=', StringComparison.Ordinal);
if (separator > 0)
{
query[pair[..separator]] = Uri.UnescapeDataString(pair[(separator + 1)..]);
}
}
return query;
}
}