# Third-party notices

HellionChat ships and depends on a number of third-party components. This document lists them, their
licences and which of them touch the network. It is the inventory referenced by `PRIVACY.md`.

Last reviewed: 2026-05-05 (HellionChat v1.1.0).

---

## Direct NuGet dependencies

Pinned in `HellionChat/HellionChat.csproj`. Versions reflect the v1.1.0 build.

| Package                                                                           | Version | Licence                                                                                                                                                                                                           | Network | Purpose                                                                                                                                                          |
| --------------------------------------------------------------------------------- | ------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [MessagePack](https://github.com/MessagePack-CSharp/MessagePack-CSharp)           | 3.1.4   | MIT                                                                                                                                                                                                               | no      | Binary serialisation for the SQLite message store.                                                                                                               |
| [Microsoft.Data.Sqlite](https://learn.microsoft.com/dotnet/standard/data/sqlite/) | 10.0.7  | MIT                                                                                                                                                                                                               | no      | Local SQLite access for the message database.                                                                                                                    |
| [morelinq](https://github.com/morelinq/MoreLINQ)                                  | 4.4.0   | Apache-2.0                                                                                                                                                                                                        | no      | LINQ helper extensions.                                                                                                                                          |
| [Pidgin](https://github.com/benjamin-hodgson/Pidgin)                              | 3.5.1   | MIT                                                                                                                                                                                                               | no      | Parser combinator library used for chat-input parsing. CIString Unicode fix relevant for non-ASCII channel/tab names.                                            |
| [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp)                   | 3.1.12  | [Six Labors Split License 1.0](https://github.com/SixLabors/ImageSharp/blob/main/LICENSE) (OSI-approved; free for open-source / non-commercial use, commercial licence required for closed-source commercial use) | no      | Image decoding for cached emotes.                                                                                                                                |
| [SQLitePCLRaw.lib.e_sqlite3](https://github.com/ericsink/SQLitePCL.raw)           | 3.50.3  | MIT                                                                                                                                                                                                               | no      | Native SQLite binary, explicitly pinned to override the transitive default for CVE-2025-6965 (memory corruption from aggregate-term overflow) and CVE-2025-7709. |

Six Labors note: HellionChat is an EUPL-1.2-licensed open-source project distributed at no cost. Use
of ImageSharp 3.x under the Six Labors Split License 1.0 is permitted on that basis. Anyone forking
HellionChat for closed-source or commercial redistribution should review the
[Six Labors licence terms](https://github.com/SixLabors/ImageSharp/blob/main/LICENSE) and obtain a
commercial licence if required.

## SDK and tooling

| Component                                                     | Licence                                     | Notes                                        |
| ------------------------------------------------------------- | ------------------------------------------- | -------------------------------------------- |
| [Dalamud.NET.Sdk](https://github.com/goatcorp/Dalamud) 15.0.0 | AGPL-3.0 (Dalamud) / SDK terms per goatcorp | Plugin SDK; pulls in DalamudPackager 15.0.0. |
| [.NET 10 SDK](https://dotnet.microsoft.com/)                  | MIT                                         | Build toolchain.                             |

## Bundled assets

| Asset                                   | Licence                                                         | Source                                                                                                                                                                                                                     |
| --------------------------------------- | --------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Exo 2 (`HellionFont.ttf`)               | SIL Open Font License 1.1                                       | [Google Fonts / Natanael Gama](https://fonts.google.com/specimen/Exo+2). The OFL licence text travels embedded next to the font (`HellionFont-OFL.txt`) to satisfy the "licence must be distributed with the font" clause. |
| Hellion plugin icon (`images/icon.png`) | © Hellion Media, included under the project licence (EUPL-1.2). | Original artwork.                                                                                                                                                                                                          |

---

## Upstream code

HellionChat is a fork of [Chat 2](https://github.com/Infiziert90/ChatTwo) by Infiziert90 (Infi) and
Anna Clemens, also licensed under EUPL-1.2. The bulk of the code, including the message store
architecture, the channel logic, the hook system and the ImGui chat window, originates from
upstream. See `../NOTICE.md` for the attribution; `UPSTREAM_SYNC.md` documents the upstream-sync
history, including the close of active cherry-picking in the v1.4.x cycle.

---

## Components that touch the network

Of everything listed above, **none** of the bundled or NuGet components opens network connections on
their own. All outbound traffic is initiated explicitly by HellionChat's own source files and is
documented in `PRIVACY.md` under "Outbound network calls":

- `HellionChat/EmoteCache.cs` → BetterTTV API + CDN (opt-out via setting)

The earlier Square Enix Lodestone font download (`FontManager.cs`) was removed in v1.0.4 — it was a
leftover from upstream's removed webinterface feature and was no longer consumed.

---

## Verifying this list

To regenerate the dependency inventory after a version bump:

```bash
dotnet list HellionChat.sln package --include-transitive
```

The "direct NuGet dependencies" table above only lists direct references. Transitive dependencies
pulled in by Dalamud SDK or by the listed packages are covered by the SDK / package licences and
documented by their respective maintainers.

To re-audit the network-call inventory:

```bash
grep -rn -E "HttpClient|HttpRequest|new Uri\(|https?://" \
  --include="*.cs" HellionChat/
```

Any new hit that is not a click-through (`Util.OpenLink`) or a payload-parsing call must be added to
`PRIVACY.md` before release.
