packages/misskey-forwarder: init

devices/vps6/default.nix

@@ -61,6 +61,7 @@ inputs:
         beesd."/" = {};
         coredns.interface = "ens18";
         headscale = {};
+        misskey-forwarder = {};
       };
     };
     networking.nftables.tables.forward =

devices/vps6/secrets.yaml

@@ -5,6 +5,10 @@ coturn:
 tinc: ENC[AES256_GCM,data:E3OrPA67R48x5FJUW0ZbERlclz8Z/XokAaGTeBQLPEHSeqEArHYSZkdJRZejFrBruJPlGZMPNBQzlIBXOfXKwMnlBDaGJIIJHIzPDGG9W7QF4IIRK/BjVZHFwfKvZtbUDGsqLcCSe5+ttmyucBaFGquXhnD/Tu09uyWtRvS10KAJLY0Z2/16CFB1+8egJIcYw2TFXObo+KR92Va0qwiDSepKaJtYLimDGRKk04QGj+BYa5y8PjIG6bz8UG82mmCiV7XM3EPlSMA=,iv:kawsklNGFbRhxKuUwvNL2WyBxuYu2T/uks1cJ4i8NhA=,tag:V+jAaxQX7JCiR5+wIVW4Nw==,type:str]
 postgresql:
     headscale: ENC[AES256_GCM,data:z2cyyT1TcIhNJCBeGn072aFI2nAioWZQvpyzoky4tWtMymKlw4ilOtSYAsp+kaNOoqvWSmoAQNJLNzeDk1iTCQ==,iv:hZdS/CAVBO0k/AmX3qw3YwTYgK49Aeu5QI3YCAduiZ0=,tag:2l4GPV/T2GHjAAUDX3LaEA==,type:str]
+misskey-forwarder:
+    secret: ENC[AES256_GCM,data:MknbcYWGDptZ2PynMFyScA9Ka/KrtBPmMTgy/cSfXIw=,iv:fg2x6fjM/KhnC014UkNAYlHKWgMnamd+0bkjIELs04Y=,tag:H8azwIcxm9DMYQMWlWJQZw==,type:str]
+    telegramBotToken: ENC[AES256_GCM,data:Ba/De5aBmMSCE6Rucqy8uw7XyPSXgy+1c8tb1uJn27//+U0RrzEQnS6TcRy5rQ==,iv:pWIP626x5om98JxR49iHYUCf50IpJ1MKdi0Mml6+gQU=,tag:rpkQFqd7j+3lfAIzuRybMg==,type:str]
+    telegramChatId: ENC[AES256_GCM,data:HpwzLKbl1WykNj0uB0I=,iv:zA45v4ZNroZNCdoFntTeonwq+ulHpPey25WiuXGCGi4=,tag:yL6P2Vgv/LxTpDWSnZwTLg==,type:str]
 sops:
     age:
         - recipient: age19ax6vm3pv8rph5tq3mmehd9sy9jk823tw8svsd790r0lkslycquqvlwz9m
@@ -25,7 +29,7 @@ sops:
             ZXFTU3ZCaW1pTVh0RUJzdDdGdHlPYTgK2mlgcX2kEc8+2UDdBnhUm6IIuh8V6agW
             ooxH9OEPXUVI/4JcDo4v8ZUhAyU1ehLH0Ef7PJCChOZe2KZmWSNbhA==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2025-12-04T12:35:00Z"
-    mac: ENC[AES256_GCM,data:hiEzLAEtU82Be/+nuMv10/ex/ZacXkNR9LkxdBn/x3kY/0uwHSDI9LGjn0b0/KWIg5zLoxV+zPZEBJQhN4QcRzDT6538zwc0yTv9fkFS0NUF5GchHi8Is6EjjHANbSLe3MEwFumKjx3Lm8AyMjcOXiCckzo4aXV98SHZW9EMVbQ=,iv:Nzzlfsm2aMSVa6NNh4ar67J5dzheWRIVLHSUu5ndjvE=,tag:jO8x2LUpP75g7cXyIYDfQw==,type:str]
+    lastmodified: "2025-12-25T10:37:16Z"
+    mac: ENC[AES256_GCM,data:ffiDjDbD/BkzBt6zzly3vDtRbRSfpgGmRIjVarPvTuc/GLUPfUpDzibT27E7LI4aBK8Utt9CCip18zmtRKF4z4h4GfHrp0pb6PipyT43+bXqzmsBrCENDiJhiSYhc6VcpA1Xn18Ce8pMaIHkYrrABqtHxU9ML3NEy6vQgN4jim8=,iv:AnWInBNkjBteWhNPASwawH+6m9yopFnYFIh7dP1jVHo=,tag:6WBLuVOXrj1jOhOHUQ7cYA==,type:str]
     unencrypted_suffix: _unencrypted
     version: 3.11.0

flake/dev.nix

@@ -55,4 +55,11 @@
     CMAKE_EXPORT_COMPILE_COMMANDS = "1";
     hardeningDisable = [ "all" ];
   };
+  misskey-forwarder = pkgs.mkShell.override { stdenv = pkgs.clang18Stdenv; }
+  {
+    inputsFrom = [ pkgs.localPackages.misskey-forwarder ];
+    packages = [ pkgs.llvmPackages_18.clang-tools ];
+    CMAKE_EXPORT_COMPILE_COMMANDS = "1";
+    hardeningDisable = [ "all" ];
+  };
 }

flake/dns/config/chn.moe.nix

@@ -27,6 +27,7 @@ let
       "git" "grafana" "peertube" "send" "vikunja" "xservernas" "freshrss" "huginn" "nextcloud"
       "rsshub" "vaultwarden" "webdav" "synapse" "misskey" "api"
     ];
+    "tinc0.pc" = [ "misskey-forwarder" ];
   };
   a =
   {

modules/services/misskey-forwarder.nix

@@ -0,0 +1,53 @@
+inputs:
+{
+  options.nixos.services.misskey-forwarder = let inherit (inputs.lib) mkOption types; in mkOption
+    { type = types.nullOr (types.submodule {}); default = null; };
+  config = let inherit (inputs.config.nixos.services) misskey-forwarder; in inputs.lib.mkIf (misskey-forwarder != null)
+  {
+    users =
+    {
+      users.misskey-forwarder =
+        { uid = inputs.config.nixos.user.uid.misskey-forwarder; group = "misskey-forwarder"; isSystemUser = true; };
+      groups.misskey-forwarder.gid = inputs.config.nixos.user.gid.misskey-forwarder;
+    };
+    systemd =
+    {
+      services.misskey-forwarder =
+      {
+        after = [ "network.target" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig =
+        {
+          User = inputs.config.users.users.misskey-forwarder.name;
+          Group = inputs.config.users.users.misskey-forwarder.group;
+          ExecStart =
+            let forwarder = inputs.pkgs.localPackages.misskey-forwarder.override
+              { configFile = inputs.config.nixos.system.sops.templates."misskey-forwarder/config.yml".path; };
+            in "${forwarder}/bin/misskey-forwarder";
+        };
+      };
+    };
+    nixos =
+    {
+      services.nginx.https."misskey-forwarder.chn.moe".location."/".proxy.upstream = "http://127.0.0.1:9173";
+      system.sops =
+      {
+        templates."misskey-forwarder/config.yml" =
+        {
+          owner = "misskey-forwarder";
+          content =
+            let inherit (inputs.config.nixos.system.sops) placeholder;
+            in builtins.toJSON
+            {
+              Secret = placeholder."misskey-forwarder/secret";
+              TelegramBotToken = placeholder."misskey-forwarder/telegramBotToken";
+              TelegramChatId = placeholder."misskey-forwarder/telegramChatId";
+              ServerPort = 9173;
+            };
+        };
+        secrets = inputs.lib.genAttrs' [ "secret" "telegramBotToken" "telegramChatId" ]
+          (n: inputs.lib.nameValuePair "misskey-forwarder/${n}" {});
+      };
+    };
+  };
+}

modules/user/default.nix

@@ -56,6 +56,7 @@ inputs:
         hpcstat = 2011;
         speedtest = 2012;
         tailscale = 2013;
+        misskey-forwarder = 2014;
       };
     };
     gid = mkOption

packages/default.nix

@@ -144,6 +144,7 @@ inputs: rec
     buildProxy = inputs.pkgs.lib.mkBuildproxy ./pybinding/proxy.nix;
   };
   brokenaxes = inputs.pkgs.python3Packages.callPackage ./brokenaxes.nix { src = inputs.topInputs.brokenaxes; };
+  misskey-forwarder = inputs.pkgs.callPackage ./misskey-forwarder { inherit biu; stdenv = inputs.pkgs.clang18Stdenv; };
 
   fromYaml = content: builtins.fromJSON (builtins.readFile
     (inputs.pkgs.runCommand "toJSON" {}

packages/misskey-forwarder/.envrc

@@ -0,0 +1 @@
+use flake .#misskey-forwarder

packages/misskey-forwarder/CMakeLists.txt

@@ -0,0 +1,24 @@
+cmake_minimum_required(VERSION 3.14)
+project(misskey-forwarder VERSION 0.0.0 LANGUAGES CXX)
+enable_testing()
+include(GNUInstallDirs)
+
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  message("Setting build type to 'Release' as none was specified.")
+  set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
+endif()
+
+find_package(biu REQUIRED)
+find_package(httplib REQUIRED)
+
+add_executable(misskey-forwarder src/main.cpp)
+target_link_libraries(misskey-forwarder PRIVATE biu::biu httplib::httplib)
+target_compile_features(misskey-forwarder PRIVATE cxx_std_23)
+target_compile_definitions(misskey-forwarder PRIVATE FORWARDER_CONFIG_FILE="${FORWARDER_CONFIG_FILE}")
+install(TARGETS misskey-forwarder RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+
+get_property(ImportedTargets DIRECTORY "${CMAKE_SOURCE_DIR}" PROPERTY IMPORTED_TARGETS)
+message("Imported targets: ${ImportedTargets}")
+message("List of compile features: ${CMAKE_CXX_COMPILE_FEATURES}")
+message("CMake build type: ${CMAKE_BUILD_TYPE}")

packages/misskey-forwarder/default.nix

@@ -0,0 +1,8 @@
+{ lib, stdenv, cmake, pkg-config, biu, configFile ? null, httplib }: stdenv.mkDerivation
+{
+  name = "misskey-forwarder";
+  src = ./.;
+  buildInputs = [ biu httplib ];
+  nativeBuildInputs = [ cmake pkg-config ];
+  cmakeFlags = lib.optional (configFile != null) [ "-DFORWARDER_CONFIG_FILE=${configFile}" ];
+}

packages/misskey-forwarder/src/main.cpp

@@ -0,0 +1,60 @@
+# include <biu.hpp>
+# include <httplib.h>
+# include <tgbot/tgbot.h>
+# ifndef FORWARDER_CONFIG_FILE
+#   define FORWARDER_CONFIG_FILE "./config.yml"
+# endif
+
+int main()
+{
+  using namespace biu::literals;
+  biu::Logger::Guard log;
+
+  struct Config
+  {
+    std::string Secret;
+    std::string TelegramBotToken;
+    std::string TelegramChatId;
+    int ServerPort;
+  };
+  auto config = YAML::LoadFile(FORWARDER_CONFIG_FILE).as<Config>();
+
+  biu::Logger::try_exec([&]
+  {
+    httplib::Server svr;
+
+    svr.Post("/", [&](const httplib::Request& req, httplib::Response& res)
+    {
+      biu::Logger::try_exec([&]
+      {
+        if (req.get_header_value("x-misskey-hook-secret") != config.Secret)
+          throw std::runtime_error("Invalid secret key.");
+
+        struct Content
+        {
+          std::string type, server;
+          struct { struct
+          {
+            std::string text, visibility;
+            struct Renote { std::string id; };
+            std::optional<Renote> renote;
+          } note; } body;
+        };
+        auto content = YAML::Load(req.body).as<Content>();
+
+        if (content.type != "note" || content.body.note.visibility != "public") return;
+        std::string text = content.body.note.text;
+        if (content.body.note.renote)
+          text += "\n🔁 Renote: https://{}/notes/{}"_f(content.server, content.body.note.renote->id);
+
+        TgBot::Bot bot(config.TelegramBotToken);
+        bot.getApi().sendMessage(config.TelegramChatId, text);
+
+        res.status = 200;
+        res.body = "OK";
+      });
+    });
+    svr.listen("0.0.0.0", config.ServerPort);
+    return 0;
+  });
+}