ACTUALLY register the handlers on init

- Fixes #157

.gitignore

@@ -2,3 +2,4 @@
 /.vscode/
 /thirdparty/
 .vs/
+.DS_Store

CMakeLists.txt

@@ -28,23 +28,23 @@ endif(CLANG_FORMAT_CMD)
 
 # thirdparty stuff
 execute_process(
-    COMMAND mkdir ${CMAKE_SOURCE_DIR}/thirdparty
+    COMMAND mkdir ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty
     ERROR_QUIET
 )
 
-find_file(RAPIDJSONTEST NAMES rapidjson rapidjson-1.1.0 PATHS ${CMAKE_SOURCE_DIR}/thirdparty CMAKE_FIND_ROOT_PATH_BOTH)
+find_file(RAPIDJSONTEST NAMES rapidjson rapidjson-1.1.0 PATHS ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty CMAKE_FIND_ROOT_PATH_BOTH)
 if (NOT RAPIDJSONTEST)
     message("no rapidjson, download")
-    set(RJ_TAR_FILE ${CMAKE_SOURCE_DIR}/thirdparty/v1.1.0.tar.gz)
+    set(RJ_TAR_FILE ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/v1.1.0.tar.gz)
     file(DOWNLOAD https://github.com/miloyip/rapidjson/archive/v1.1.0.tar.gz ${RJ_TAR_FILE})
     execute_process(
         COMMAND ${CMAKE_COMMAND} -E tar xzf ${RJ_TAR_FILE}
-        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/thirdparty
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty
     )
     file(REMOVE ${RJ_TAR_FILE})
 endif(NOT RAPIDJSONTEST)
 
-find_file(RAPIDJSON NAMES rapidjson rapidjson-1.1.0 PATHS ${CMAKE_SOURCE_DIR}/thirdparty CMAKE_FIND_ROOT_PATH_BOTH)
+find_file(RAPIDJSON NAMES rapidjson rapidjson-1.1.0 PATHS ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty CMAKE_FIND_ROOT_PATH_BOTH)
 
 add_library(rapidjson STATIC IMPORTED ${RAPIDJSON})
 

README.md

@@ -7,7 +7,7 @@ have callbacks for where a more complete game would do more things (joining, spe
 
 ## Documentation
 
-The most up to date documentation for Rich Presence can always be found in our [developer site](https://discordapp.com/developers/docs/topics/rich-presence)!
+The most up to date documentation for Rich Presence can always be found on our [developer site](https://discordapp.com/developers/docs/rich-presence/how-to)! If you're interested in rolling your own native implementation of Rich Presence via IPC sockets instead of using our SDK—hey, you've got free time, right?—check out the ["Hard Mode" documentation](https://github.com/discordapp/discord-rpc/blob/master/documentation/hard-mode.md).
 
 ## Basic Usage
 
@@ -21,6 +21,10 @@ Download a release package for your platform(s) -- they have subdirs with variou
 
 ### From repo
 
+First-eth, you'll want `CMake`. There's a few different ways to install it on your system, and you should refer to [their website](https://cmake.org/install/). Many package managers provide ways of installing CMake as well.
+
+To make sure it's installed correctly, type `cmake --version` into your flavor of terminal/cmd. If you get a response with a version number, you're good to go!
+
 There's a [CMake](https://cmake.org/download/) file that should be able to generate the lib for you; Sometimes I use it like this:
 ```sh
     cd <path to discord-rpc>
@@ -31,7 +35,7 @@ There's a [CMake](https://cmake.org/download/) file that should be able to gener
 ```
 There is a wrapper build script `build.py` that runs `cmake` with a few different options.
 
-Usually, I run `build.py` to get things started, then use the generated project files as I work on things.
+Usually, I run `build.py` to get things started, then use the generated project files as I work on things. It does depend on `click` library, so do a quick `pip install click` to make sure you have it if you want to run `build.py`.
 
 There are some CMake options you might care about:
 
@@ -57,11 +61,11 @@ This is a text adventure "game" that inits/deinits the connection to Discord, an
 
 ## Sample: button-clicker
 
-This is a sample [Unity](https://unity3d.com/) project that wraps a DLL version of the library, and sends presence updates when you click on a button.
+This is a sample [Unity](https://unity3d.com/) project that wraps a DLL version of the library, and sends presence updates when you click on a button. Run `python build.py unity` in the root directory to build the correct library files and place them in their respective folders.
 
 ## Sample: unrealstatus
 
-This is a sample [Unreal](https://www.unrealengine.com) project that wraps the DLL version of the library with an Unreal plugin, exposes a blueprint class for interacting with it, and uses that to make a very simple UI.
+This is a sample [Unreal](https://www.unrealengine.com) project that wraps the DLL version of the library with an Unreal plugin, exposes a blueprint class for interacting with it, and uses that to make a very simple UI. Run `python build.py unreal` in the root directory to build the correct library files and place them in their respective folders.
 
 ## Wrappers and Implementations
 
@@ -75,4 +79,9 @@ Below is a table of unofficial, community-developed wrappers for and implementat
 
 | Name | Language |
 |------|----------|
-| Be the first! | |
+| [discord-rpc.jar](https://github.com/Vatuu/discord-rpc "Discord-RPC.jar") | Java |
+| [java-discord-rpc](https://github.com/MinnDevelopment/java-discord-rpc) | Java |
+| [Discord-IPC](https://github.com/jagrosh/DiscordIPC) | Java |
+| [Discord Rich Presence](https://npmjs.org/discord-rich-presence) | JavaScript |
+| [drpc4k](https://github.com/Bluexin/drpc4k) | [Kotlin](https://kotlinlang.org/) |
+| [SwordRPC](https://github.com/Azoy/SwordRPC) | [Swift](https://swift.org) |

build.py

@@ -62,19 +62,13 @@ def cli(ctx, clean):
     if ctx.invoked_subcommand is None:
         ctx.invoke(libs, clean=clean)
         if IS_BUILD_MACHINE:
-            ctx.invoke(sign)    
+            ctx.invoke(sign)
         ctx.invoke(archive)
 
 
-@cli.command()
-def unity():
-    """ todo: build unity project """
-    pass
-
-
 @cli.command()
 @click.pass_context
-def for_unity(ctx):
+def unity(ctx):
     """ build just dynamic libs for use in unity project """
     ctx.invoke(
         libs,
@@ -84,12 +78,97 @@ def for_unity(ctx):
         skip_formatter=True,
         just_release=True
     )
+    BUILDS = []
+
+    click.echo('--- Copying libs and header into unity example')
+    UNITY_PROJECT_PATH = os.path.join(SCRIPT_PATH, 'examples', 'button-clicker', 'Assets', 'Plugins')
+
+    if sys.platform.startswith('win'):
+        LIBRARY_NAME = 'discord-rpc.dll'
+        BUILD_64_BASE_PATH = os.path.join(SCRIPT_PATH, 'builds', 'win64-dynamic', 'src', 'Release')
+        UNITY_64_DLL_PATH = os.path.join(UNITY_PROJECT_PATH, 'x86_64')
+        BUILDS.append({BUILD_64_BASE_PATH: UNITY_64_DLL_PATH})
+
+        BUILD_32_BASE_PATH = os.path.join(SCRIPT_PATH, 'builds', 'win32-dynamic', 'src', 'Release')
+        UNITY_32_DLL_PATH = os.path.join(UNITY_PROJECT_PATH, 'x86')
+        BUILDS.append({BUILD_32_BASE_PATH: UNITY_32_DLL_PATH})
+
+    elif sys.platform == 'darwin':
+        LIBRARY_NAME = 'discord-rpc.bundle'
+        BUILD_BASE_PATH = os.path.join(SCRIPT_PATH, 'builds', 'osx-dynamic', 'src')
+        UNITY_DLL_PATH = UNITY_PROJECT_PATH
+        os.rename(os.path.join(BUILD_BASE_PATH, 'libdiscord-rpc.dylib'), os.path.join(BUILD_BASE_PATH, 'discord-rpc.bundle'))
+
+        BUILDS.append({BUILD_BASE_PATH: UNITY_DLL_PATH})
+
+    elif sys.platform.startswith('linux'):
+        LIBRARY_NAME = 'discord-rpc.so'
+        BUILD_BASE_PATH = os.path.join(SCRIPT_PATH, 'builds', 'linux-dynamic', 'src')
+        UNITY_DLL_PATH = os.path.join(UNITY_PROJECT_PATH, 'x86')
+        os.rename(os.path.join(BUILD_BASE_PATH, 'libdiscord-rpc.so'), os.path.join(BUILD_BASE_PATH, 'discord-rpc.so'))
+
+        BUILDS.append({BUILD_BASE_PATH: UNITY_DLL_PATH})
+
+    else:
+        raise Exception('Unsupported platform ' + sys.platform)
+
+    for build in BUILDS:
+        for i in build:
+            mkdir_p(build[i])
+            shutil.copy(os.path.join(i, LIBRARY_NAME), build[i])
 
 
 @cli.command()
-def unreal():
+@click.pass_context
-    """ todo: build unreal project """
+def unreal(ctx):
-    pass
+    """ build libs and copy them into the unreal project """
+    ctx.invoke(
+        libs,
+        clean=False,
+        static=False,
+        shared=True,
+        skip_formatter=True,
+        just_release=True
+    )
+    BUILDS = []
+
+    click.echo('--- Copying libs and header into unreal example')
+    UNREAL_PROJECT_PATH = os.path.join(SCRIPT_PATH, 'examples', 'unrealstatus', 'Plugins', 'discordrpc')
+    UNREAL_INCLUDE_PATH = os.path.join(UNREAL_PROJECT_PATH, 'Source', 'ThirdParty', 'DiscordRpcLibrary', 'Include')
+    mkdir_p(UNREAL_INCLUDE_PATH)
+    shutil.copy(os.path.join(SCRIPT_PATH, 'include', 'discord_rpc.h'), UNREAL_INCLUDE_PATH)
+
+    if sys.platform.startswith('win'):
+        LIBRARY_NAME = 'discord-rpc.lib'
+        BUILD_64_BASE_PATH = os.path.join(SCRIPT_PATH, 'builds', 'win64-dynamic', 'src', 'Release')
+        UNREAL_64_DLL_PATH = os.path.join(UNREAL_PROJECT_PATH, 'Source', 'ThirdParty', 'DiscordRpcLibrary', 'Win64')
+        BUILDS.append({BUILD_64_BASE_PATH: UNREAL_64_DLL_PATH})
+
+        BUILD_32_BASE_PATH = os.path.join(SCRIPT_PATH, 'builds', 'win32-dynamic', 'src', 'Release')
+        UNREAL_32_DLL_PATH = os.path.join(UNREAL_PROJECT_PATH, 'Source', 'ThirdParty', 'DiscordRpcLibrary', 'Win32')
+        BUILDS.append({BUILD_32_BASE_PATH: UNREAL_32_DLL_PATH})
+
+    elif sys.platform == 'darwin':
+        LIBRARY_NAME = 'libdiscord-rpc.dylib'
+        BUILD_BASE_PATH = os.path.join(SCRIPT_PATH, 'builds', 'osx-dynamic', 'src')
+        UNREAL_DLL_PATH = os.path.join(UNREAL_PROJECT_PATH, 'Source', 'ThirdParty', 'DiscordRpcLibrary', 'Mac')
+
+        BUILDS.append({BUILD_BASE_PATH: UNREAL_DLL_PATH})
+
+    elif sys.platform.startswith('linux'):
+        LIBRARY_NAME = 'libdiscord-rpc.so'
+        BUILD_BASE_PATH = os.path.join(SCRIPT_PATH, 'builds', 'linux-dynamic', 'src')
+        UNREAL_DLL_PATH = os.path.join(UNREAL_PROJECT_PATH, 'Source', 'ThirdParty', 'DiscordRpcLibrary', 'Linux')
+
+        BUILDS.append({BUILD_BASE_PATH: UNREAL_DLL_PATH})
+
+    else:
+        raise Exception('Unsupported platform ' + sys.platform)
+
+    for build in BUILDS:
+        for i in build:
+            mkdir_p(build[i])
+            shutil.copy(os.path.join(i, LIBRARY_NAME), build[i])
 
 
 def build_lib(build_name, generator, options, just_release):
@@ -145,7 +224,7 @@ def sign():
         sign_command_base = [
             tool,
             'sign',
-            '/n', 'Hammer & Chisel Inc.',
+            '/n', 'Discord Inc.',
             '/a',
             '/tr', 'http://timestamp.digicert.com/rfc3161',
             '/as',
@@ -165,7 +244,7 @@ def sign():
     else:
         click.secho('Not signing things on this platform yet', fg='red')
         return
-    
+
     click.echo('--- Signing')
     for path, _, filenames in os.walk(INSTALL_ROOT):
         for fname in filenames:

documentation/hard-mode.md

@@ -66,7 +66,7 @@ First is the `ACTIVITY_JOIN` event:
   "data": {
     "secret": "025ed05c71f639de8bfaa0d679d7c94b2fdce12f"
   },
-  "evnt": "ACTIVITY_JOIN"
+  "evt": "ACTIVITY_JOIN"
 }
 ```
 
@@ -78,7 +78,7 @@ Second is the `ACTIVITY_SPECTATE` event:
   "data": {
     "secret": "e7eb30d2ee025ed05c71ea495f770b76454ee4e0"
   },
-  "evnt": "ACTIVITY_SPECTATE"
+  "evt": "ACTIVITY_SPECTATE"
 }
 ```
 
@@ -93,10 +93,9 @@ And third is the `ACTIVITY_JOIN_REQUEST` event:
       "username": "Mason",
       "discriminator": "1337",
       "avatar": "a_bab14f271d565501444b2ca3be944b25"
-    },
+    }
-    "secret": "e459ca99273f59909dd16ed97865f3ad"
   },
-  "evnt": "ACTIVITY_JOIN_REQUEST"
+  "evt": "ACTIVITY_JOIN_REQUEST"
 }
 ```
 
@@ -125,3 +124,41 @@ In order to receive these events, you need to [subscribe](https://discordapp.com
     "cmd": "SUBSCRIBE"
 }
 ```
+
+To unsubscribe from these events, resend with the command `UNSUBSCRIBE`
+
+## Responding
+A discord user will request access to the game. If the ACTIVITY_JOIN_REQUEST has been subscribed too, the ACTIVITY_JOIN_REQUEST event will be sent to the host's game. Accept it with following model:
+```json
+{
+    "nonce": "5dc0c062-98c6-47a0-8922-15aerg126",
+    "cmd": "SEND_ACTIVITY_JOIN_INVITE",
+    "args": 
+    {
+        "user_id": "53908232506183680"
+    }
+}
+```
+
+To reject the request, use `CLOSE_ACTIVITY_REQUEST`:
+```json
+{
+    "nonce": "5dc0c062-98c6-47a0-8922-dasg256eafg",
+    "cmd": "CLOSE_ACTIVITY_REQUEST",
+    "args": 
+    {
+        "user_id": "53908232506183680"
+    }
+}
+```
+
+## Notes
+Here are just some quick notes to help with some common troubleshooting problems.
+* IPC will echo back every command you send as a response. Use this as a lock-step feature to avoid flooding messages. Can be used to validate messages such as the Presence or Subscribes.
+* The pipe expects for frames to be written in a single byte array. You cannot do multiple `stream.Write(opcode);` `stream.Write(length);` as it will break the pipe. Instead create a buffer, write the data to the buffer, then send the entire buffer to the stream.
+* Discord can be on any pipe ranging from `discord-ipc-0` to `discord-ipc-9`. It is a good idea to try and connect to each one and keeping the first one you connect too. For multiple clients (eg Discord and Canary), you might want to add a feature to manually select the pipe so you can more easily debug the application.
+* All enums are `lower_snake_case`. 
+* The opcode and length in the header are `Little Endian Unsigned Integers (32bits)`. In some languages, you must convert them as they can be architecture specific.
+* [Discord Rich Presence How-To](https://discordapp.com/developers/docs/rich-presence/how-to) contains a lot of the information this document doesn't. For example, it will tell you about the response payload.
+* In the documentation, DISCORD_REPLY_IGNORE is just implemented the same as DISCORD_REPLY_NO.
+* You can test the Join / Spectate feature by enabling them in your profile and whitelisting a test account. Use Canary to run 2 accounts on the same machine.

examples/button-clicker/Assets/DiscordController.cs

@@ -11,13 +11,15 @@ public class DiscordJoinRequestEvent : UnityEngine.Events.UnityEvent<DiscordRpc.
 
 public class DiscordController : MonoBehaviour
 {
-    public DiscordRpc.RichPresence presence;
+    public DiscordRpc.RichPresence presence = new DiscordRpc.RichPresence();
     public string applicationId;
     public string optionalSteamId;
     public int callbackCalls;
     public int clickCounter;
+    public DiscordRpc.JoinRequest joinRequest;
     public UnityEngine.Events.UnityEvent onConnect;
     public UnityEngine.Events.UnityEvent onDisconnect;
+    public UnityEngine.Events.UnityEvent hasResponded;
     public DiscordJoinEvent onJoin;
     public DiscordJoinEvent onSpectate;
     public DiscordJoinRequestEvent onJoinRequest;
@@ -31,7 +33,21 @@ public class DiscordController : MonoBehaviour
 
         presence.details = string.Format("Button clicked {0} times", clickCounter);
 
-        DiscordRpc.UpdatePresence(ref presence);
+        DiscordRpc.UpdatePresence(presence);
+    }
+
+    public void RequestRespondYes()
+    {
+        Debug.Log("Discord: responding yes to Ask to Join request");
+        DiscordRpc.Respond(joinRequest.userId, DiscordRpc.Reply.Yes);
+        hasResponded.Invoke();
+    }
+
+    public void RequestRespondNo()
+    {
+        Debug.Log("Discord: responding no to Ask to Join request");
+        DiscordRpc.Respond(joinRequest.userId, DiscordRpc.Reply.No);
+        hasResponded.Invoke();
     }
 
     public void ReadyCallback()
@@ -72,6 +88,7 @@ public class DiscordController : MonoBehaviour
     {
         ++callbackCalls;
         Debug.Log(string.Format("Discord: join request {0}#{1}: {2}", request.username, request.discriminator, request.userId));
+        joinRequest = request;
         onJoinRequest.Invoke(request);
     }
 

examples/button-clicker/Assets/DiscordRpc.cs

@@ -1,4 +1,7 @@
-using System.Runtime.InteropServices;
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
 
 public class DiscordRpc
 {
@@ -30,27 +33,27 @@ public class DiscordRpc
         public RequestCallback requestCallback;
     }
 
-    [System.Serializable]
+    [Serializable, StructLayout(LayoutKind.Sequential)]
-    public struct RichPresence
+    public struct RichPresenceStruct
     {
-        public string state; /* max 128 bytes */
+        public IntPtr state; /* max 128 bytes */
-        public string details; /* max 128 bytes */
+        public IntPtr details; /* max 128 bytes */
         public long startTimestamp;
         public long endTimestamp;
-        public string largeImageKey; /* max 32 bytes */
+        public IntPtr largeImageKey; /* max 32 bytes */
-        public string largeImageText; /* max 128 bytes */
+        public IntPtr largeImageText; /* max 128 bytes */
-        public string smallImageKey; /* max 32 bytes */
+        public IntPtr smallImageKey; /* max 32 bytes */
-        public string smallImageText; /* max 128 bytes */
+        public IntPtr smallImageText; /* max 128 bytes */
-        public string partyId; /* max 128 bytes */
+        public IntPtr partyId; /* max 128 bytes */
         public int partySize;
         public int partyMax;
-        public string matchSecret; /* max 128 bytes */
+        public IntPtr matchSecret; /* max 128 bytes */
-        public string joinSecret; /* max 128 bytes */
+        public IntPtr joinSecret; /* max 128 bytes */
-        public string spectateSecret; /* max 128 bytes */
+        public IntPtr spectateSecret; /* max 128 bytes */
         public bool instance;
     }
 
-    [System.Serializable]
+    [Serializable]
     public struct JoinRequest
     {
         public string userId;
@@ -76,9 +79,142 @@ public class DiscordRpc
     public static extern void RunCallbacks();
 
     [DllImport("discord-rpc", EntryPoint = "Discord_UpdatePresence", CallingConvention = CallingConvention.Cdecl)]
-    public static extern void UpdatePresence(ref RichPresence presence);
+    private static extern void UpdatePresenceNative(ref RichPresenceStruct presence);
+
+    [DllImport("discord-rpc", EntryPoint = "Discord_ClearPresence", CallingConvention = CallingConvention.Cdecl)]
+    public static extern void ClearPresence();
 
     [DllImport("discord-rpc", EntryPoint = "Discord_Respond", CallingConvention = CallingConvention.Cdecl)]
     public static extern void Respond(string userId, Reply reply);
-}
 
+    [DllImport("discord-rpc", EntryPoint = "Discord_UpdateHandlers", CallingConvention = CallingConvention.Cdecl)]
+    public static extern void UpdateHandlers(ref EventHandlers handlers);
+
+    public static void UpdatePresence(RichPresence presence)
+    {
+        var presencestruct = presence.GetStruct();
+        UpdatePresenceNative(ref presencestruct);
+        presence.FreeMem();
+    }
+
+    public class RichPresence
+    {
+        private RichPresenceStruct _presence;
+        private readonly List<IntPtr> _buffers = new List<IntPtr>(10);
+
+        public string state; /* max 128 bytes */
+        public string details; /* max 128 bytes */
+        public long startTimestamp;
+        public long endTimestamp;
+        public string largeImageKey; /* max 32 bytes */
+        public string largeImageText; /* max 128 bytes */
+        public string smallImageKey; /* max 32 bytes */
+        public string smallImageText; /* max 128 bytes */
+        public string partyId; /* max 128 bytes */
+        public int partySize;
+        public int partyMax;
+        public string matchSecret; /* max 128 bytes */
+        public string joinSecret; /* max 128 bytes */
+        public string spectateSecret; /* max 128 bytes */
+        public bool instance;
+
+        /// <summary>
+        /// Get the <see cref="RichPresenceStruct"/> reprensentation of this instance
+        /// </summary>
+        /// <returns><see cref="RichPresenceStruct"/> reprensentation of this instance</returns>
+        internal RichPresenceStruct GetStruct()
+        {
+            if (_buffers.Count > 0)
+            {
+                FreeMem();
+            }
+
+            _presence.state = StrToPtr(state, 128);
+            _presence.details = StrToPtr(details, 128);
+            _presence.startTimestamp = startTimestamp;
+            _presence.endTimestamp = endTimestamp;
+            _presence.largeImageKey = StrToPtr(largeImageKey, 32);
+            _presence.largeImageText = StrToPtr(largeImageText, 128);
+            _presence.smallImageKey = StrToPtr(smallImageKey, 32);
+            _presence.smallImageText = StrToPtr(smallImageText, 128);
+            _presence.partyId = StrToPtr(partyId, 128);
+            _presence.partySize = partySize;
+            _presence.partyMax = partyMax;
+            _presence.matchSecret = StrToPtr(matchSecret, 128);
+            _presence.joinSecret = StrToPtr(joinSecret, 128);
+            _presence.spectateSecret = StrToPtr(spectateSecret, 128);
+            _presence.instance = instance;
+
+            return _presence;
+        }
+
+        /// <summary>
+        /// Returns a pointer to a representation of the given string with a size of maxbytes
+        /// </summary>
+        /// <param name="input">String to convert</param>
+        /// <param name="maxbytes">Max number of bytes to use</param>
+        /// <returns>Pointer to the UTF-8 representation of <see cref="input"/></returns>
+        private IntPtr StrToPtr(string input, int maxbytes)
+        {
+            if (string.IsNullOrEmpty(input)) return IntPtr.Zero;
+            var convstr = StrClampBytes(input, maxbytes);
+            var convbytecnt = Encoding.UTF8.GetByteCount(convstr);
+            var buffer = Marshal.AllocHGlobal(convbytecnt);
+            _buffers.Add(buffer);
+            Marshal.Copy(Encoding.UTF8.GetBytes(convstr), 0, buffer, convbytecnt);
+            return buffer;
+        }
+
+        /// <summary>
+        /// Convert string to UTF-8 and add null termination
+        /// </summary>
+        /// <param name="toconv">string to convert</param>
+        /// <returns>UTF-8 representation of <see cref="toconv"/> with added null termination</returns>
+        private static string StrToUtf8NullTerm(string toconv)
+        {
+            var str = toconv.Trim();
+            var bytes = Encoding.Default.GetBytes(str);
+            if (bytes.Length > 0 && bytes[bytes.Length - 1] != 0)
+            {
+                str += "\0\0";
+            }
+            return Encoding.UTF8.GetString(Encoding.UTF8.GetBytes(str));
+        }
+
+        /// <summary>
+        /// Clamp the string to the given byte length preserving null termination
+        /// </summary>
+        /// <param name="toclamp">string to clamp</param>
+        /// <param name="maxbytes">max bytes the resulting string should have (including null termination)</param>
+        /// <returns>null terminated string with a byte length less or equal to <see cref="maxbytes"/></returns>
+        private static string StrClampBytes(string toclamp, int maxbytes)
+        {
+            var str = StrToUtf8NullTerm(toclamp);
+            var strbytes = Encoding.UTF8.GetBytes(str);
+
+            if (strbytes.Length <= maxbytes)
+            {
+                return str;
+            }
+
+            var newstrbytes = new byte[] { };
+            Array.Copy(strbytes, 0, newstrbytes, 0, maxbytes - 1);
+            newstrbytes[newstrbytes.Length - 1] = 0;
+            newstrbytes[newstrbytes.Length - 2] = 0;
+
+            return Encoding.UTF8.GetString(newstrbytes);
+        }
+
+        /// <summary>
+        /// Free the allocated memory for conversion to <see cref="RichPresenceStruct"/>
+        /// </summary>
+        internal void FreeMem()
+        {
+            for (var i = _buffers.Count - 1; i >= 0; i--)
+            {
+                Marshal.FreeHGlobal(_buffers[i]);
+                _buffers.RemoveAt(i);
+            }
+        }
+    }
+}

examples/button-clicker/Assets/Editor/BuildHelper.cs

@@ -27,7 +27,7 @@ public class ScriptBatch
 		proc.StartInfo.EnvironmentVariables["PATH"] = newPath;
 #endif
 		proc.StartInfo.FileName = "python";
-		proc.StartInfo.Arguments = "build.py for_unity";
+		proc.StartInfo.Arguments = "build.py unity";
 		proc.StartInfo.WorkingDirectory = "../..";
 		proc.Start();
 		proc.WaitForExit();
@@ -46,8 +46,8 @@ public class ScriptBatch
 		string[] srcDlls = { "../../builds/install/osx-dynamic/lib/libdiscord-rpc.dylib" };
 		#else
 		string[] dstDirs = { "Assets/Plugins", "Assets/Plugins/x86", "Assets/Plugins/x86_64" };
-		string[] dstDlls = { "Assets/Plugins/x86/discord-rpc.so", "Assets/Plugins/x86_64/discord-rpc.so" };
+		string[] dstDlls = { "Assets/Plugins/discord-rpc.so" };
-		string[] srcDlls = { "../../builds/install/linux-dynamic/bin/discord-rpc.dll", "../../builds/install/win64-dynamic/bin/discord-rpc.dll" };
+		string[] srcDlls = { "../../builds/install/linux-dynamic/lib/libdiscord-rpc.so" };
 		#endif
 
 		Debug.Assert(dstDlls.Length == srcDlls.Length);

examples/button-clicker/Assets/main.unity

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   callbackCalls: 0
   clickCounter: 0
+  joinRequest:
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+    username: 
+    discriminator: 
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@@ -703,6 +1103,44 @@ MonoBehaviour:
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     m_TypeName: UnityEngine.Events.UnityEvent, UnityEngine, Version=0.0.0.0, Culture=neutral,
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@@ -715,7 +1153,40 @@ MonoBehaviour:
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+  m_AnchoredPosition: {x: 0, y: 0}
+  m_SizeDelta: {x: 0, y: 0}
+  m_Pivot: {x: 0.5, y: 0.5}
+--- !u!114 &1958982063
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+  m_Color: {r: 0.19607843, g: 0.19607843, b: 0.19607843, a: 1}
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+  m_OnCullStateChanged:
+    m_PersistentCalls:
+      m_Calls: []
+    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
+      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
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+    m_LineSpacing: 1
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+--- !u!222 &1958982064
+CanvasRenderer:
+  m_ObjectHideFlags: 0
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+  m_GameObject: {fileID: 1958982061}

examples/send-presence/send-presence.c

@@ -1,5 +1,5 @@
 /*
-    This is a simple example in C of using the rich presence API asyncronously.
+    This is a simple example in C of using the rich presence API asynchronously.
 */
 
 #define _CRT_SECURE_NO_WARNINGS /* thanks Microsoft */
@@ -9,11 +9,12 @@
 #include <string.h>
 #include <time.h>
 
-#include "discord-rpc.h"
+#include "discord_rpc.h"
 
 static const char* APPLICATION_ID = "345229890980937739";
 static int FrustrationLevel = 0;
 static int64_t StartTime;
+static int SendPresence = 1;
 
 static int prompt(char* line, size_t size)
 {
@@ -32,27 +33,31 @@ static int prompt(char* line, size_t size)
 
 static void updateDiscordPresence()
 {
-    char buffer[256];
+    if (SendPresence) {
-    DiscordRichPresence discordPresence;
+        char buffer[256];
-    memset(&discordPresence, 0, sizeof(discordPresence));
+        DiscordRichPresence discordPresence;
-    discordPresence.state = "West of House";
+        memset(&discordPresence, 0, sizeof(discordPresence));
-    sprintf(buffer, "Frustration level: %d", FrustrationLevel);
+        discordPresence.state = "West of House";
-    discordPresence.details = buffer;
+        sprintf(buffer, "Frustration level: %d", FrustrationLevel);
-    discordPresence.startTimestamp = StartTime;
+        discordPresence.details = buffer;
-    discordPresence.endTimestamp = time(0) + 5 * 60;
+        discordPresence.startTimestamp = StartTime;
-    discordPresence.largeImageKey = "canary-large";
+        discordPresence.endTimestamp = time(0) + 5 * 60;
-    discordPresence.smallImageKey = "ptb-small";
+        discordPresence.largeImageKey = "canary-large";
-    discordPresence.partyId = "party1234";
+        discordPresence.smallImageKey = "ptb-small";
-    discordPresence.partySize = 1;
+        discordPresence.partyId = "party1234";
-    discordPresence.partyMax = 6;
+        discordPresence.partySize = 1;
-    discordPresence.matchSecret = "xyzzy";
+        discordPresence.partyMax = 6;
-    discordPresence.joinSecret = "join";
+        discordPresence.matchSecret = "xyzzy";
-    discordPresence.spectateSecret = "look";
+        discordPresence.joinSecret = "join";
-    discordPresence.instance = 0;
+        discordPresence.spectateSecret = "look";
-    Discord_UpdatePresence(&discordPresence);
+        discordPresence.instance = 0;
+        Discord_UpdatePresence(&discordPresence);
+    } else {
+        Discord_ClearPresence();
+    }
 }
 
-static void handleDiscordReady()
+static void handleDiscordReady(void)
 {
     printf("\nDiscord: ready\n");
 }
@@ -143,6 +148,18 @@ static void gameLoop()
                 continue;
             }
 
+            if (line[0] == 'c') {
+                if (SendPresence) {
+                    printf("Clearing presence information.\n");
+                    SendPresence = 0;
+                } else {
+                    printf("Restoring presence information.\n");
+                    SendPresence = 1;
+                }
+                updateDiscordPresence();
+                continue;
+            }
+
             if (line[0] == 'y') {
                 printf("Reinit Discord.\n");
                 discordInit();

examples/unrealstatus/.gitignore

@@ -73,3 +73,6 @@ Intermediate/
 
 # Cache files for the editor to use
 DerivedDataCache/
+
+# Library headers must be copied automatically by the build script (build.py unreal)
+Plugins/DiscordRpc/Source/ThirdParty/DiscordRpcLibrary/Include

examples/unrealstatus/Plugins/discordrpc/DiscordRpc.uplugin

@@ -15,9 +15,15 @@
 	"Installed": false,
 	"Modules": [
 		{
-			"Name": "discordrpc",
+			"Name": "DiscordRpc",
-			"Type": "Developer",
+			"Type": "Runtime",
-			"LoadingPhase": "Default"
+			"LoadingPhase": "PreDefault",
+			"WhitelistPlatforms" :
+			[
+				"Win64",
+				"Linux",
+				"Mac"
+			]
 		}
 	]
 }

examples/unrealstatus/Plugins/discordrpc/Source/DiscordRpc/DiscordRpc.Build.cs

@@ -0,0 +1,57 @@
+// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
+
+using UnrealBuildTool;
+using System.IO;
+
+public class DiscordRpc : ModuleRules
+{
+#if WITH_FORWARDED_MODULE_RULES_CTOR
+    public DiscordRpc(ReadOnlyTargetRules Target) : base(Target)
+#else
+    public DiscordRpc(TargetInfo Target)
+#endif
+    {
+        Definitions.Add("DISCORD_DYNAMIC_LIB=1");
+
+        PublicIncludePaths.AddRange(
+            new string[] {
+                "DiscordRpc/Public"
+            }
+            );
+
+        PrivateIncludePaths.AddRange(
+            new string[] {
+                "DiscordRpc/Private"
+            }
+            );
+
+        PublicDependencyModuleNames.AddRange(
+            new string[]
+            {
+                "Core",
+                "DiscordRpcLibrary"
+            }
+            );
+
+        PrivateDependencyModuleNames.AddRange(
+            new string[]
+            {
+                "CoreUObject",
+                "Engine",
+                "Slate",
+                "SlateCore",
+                "Projects"
+            }
+            );
+
+        DynamicallyLoadedModuleNames.AddRange(
+            new string[]
+            {
+                // ... add any modules that your module loads dynamically here ...
+            }
+            );
+
+        string BaseDirectory = Path.GetFullPath(Path.Combine(ModuleDirectory, "..", "..", "Source", "ThirdParty", "DiscordRpcLibrary"));
+        PublicIncludePaths.Add(Path.Combine(BaseDirectory, "Include"));
+    }
+}

examples/unrealstatus/Plugins/discordrpc/Source/DiscordRpc/Private/DiscordRpc.cpp

@@ -0,0 +1,71 @@
+// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
+
+#include "DiscordRpcPrivatePCH.h"
+#include "IPluginManager.h"
+#include "ModuleManager.h"
+
+#define LOCTEXT_NAMESPACE "FDiscordRpcModule"
+
+void FDiscordRpcModule::StartupModule()
+{
+#if !PLATFORM_LINUX
+#if defined(DISCORD_DYNAMIC_LIB)
+    // Get the base directory of this plugin
+    FString BaseDir = IPluginManager::Get().FindPlugin("DiscordRpc")->GetBaseDir();
+    const FString SDKDir = FPaths::Combine(*BaseDir, TEXT("Source"), TEXT("ThirdParty"), TEXT("DiscordRpcLibrary"));
+#if PLATFORM_WINDOWS
+    const FString LibName = TEXT("discord-rpc");
+    const FString LibDir = FPaths::Combine(*SDKDir, TEXT("Win64"));
+    if (!LoadDependency(LibDir, LibName, DiscordRpcLibraryHandle)) {
+        FMessageDialog::Open(EAppMsgType::Ok, LOCTEXT(LOCTEXT_NAMESPACE, "Failed to load DiscordRpc plugin. Plug-in will not be functional."));
+        FreeDependency(DiscordRpcLibraryHandle);
+    }
+#elif PLATFORM_MAC
+    const FString LibName = TEXT("libdiscord-rpc");
+    const FString LibDir = FPaths::Combine(*SDKDir, TEXT("Mac"));
+    if (!LoadDependency(LibDir, LibName, DiscordRpcLibraryHandle)) {
+        FMessageDialog::Open(EAppMsgType::Ok, LOCTEXT(LOCTEXT_NAMESPACE, "Failed to load DiscordRpc plugin. Plug-in will not be functional."));
+        FreeDependency(DiscordRpcLibraryHandle);
+    }
+#endif
+#endif
+#endif
+}
+
+void FDiscordRpcModule::ShutdownModule()
+{
+    // Free the dll handle
+#if !PLATFORM_LINUX
+#if defined(DISCORD_DYNAMIC_LIB)
+    FreeDependency(DiscordRpcLibraryHandle);
+#endif
+#endif
+}
+
+bool FDiscordRpcModule::LoadDependency(const FString& Dir, const FString& Name, void*& Handle)
+{
+    FString Lib = Name + TEXT(".") + FPlatformProcess::GetModuleExtension();
+    FString Path = Dir.IsEmpty() ? *Lib : FPaths::Combine(*Dir, *Lib);
+
+    Handle = FPlatformProcess::GetDllHandle(*Path);
+
+    if (Handle == nullptr)
+    {
+        return false;
+    }
+
+    return true;
+}
+
+void FDiscordRpcModule::FreeDependency(void*& Handle)
+{
+    if (Handle != nullptr)
+    {
+        FPlatformProcess::FreeDllHandle(Handle);
+        Handle = nullptr;
+    }
+}
+
+#undef LOCTEXT_NAMESPACE
+
+IMPLEMENT_MODULE(FDiscordRpcModule, DiscordRpc)

examples/unrealstatus/Plugins/discordrpc/Source/DiscordRpc/Private/DiscordRpcBlueprint.cpp

@@ -1,8 +1,6 @@
-
+#include "DiscordRpcPrivatePCH.h"
-
 #include "DiscordRpcBlueprint.h"
-
+#include "discord_rpc.h"
-#include "discord-rpc.h"
 
 DEFINE_LOG_CATEGORY(Discord)
 
@@ -61,15 +59,15 @@ static void JoinRequestHandler(const DiscordJoinRequest* request)
     jr.username = ANSI_TO_TCHAR(request->username);
     jr.discriminator = ANSI_TO_TCHAR(request->discriminator);
     jr.avatar = ANSI_TO_TCHAR(request->avatar);
-    UE_LOG(Discord, Log, TEXT("Discord join request from %s#%s"), *jr.username, *jr.discriminator);
+    UE_LOG(Discord, Log, TEXT("Discord join request from %s - %s#%s"), *jr.userId, *jr.username, *jr.discriminator);
     if (self) {
         self->OnJoinRequest.Broadcast(jr);
     }
 }
 
 void UDiscordRpc::Initialize(const FString& applicationId,
-                             bool autoRegister,
+    bool autoRegister,
-                             const FString& optionalSteamId)
+    const FString& optionalSteamId)
 {
     self = this;
     IsConnected = false;
@@ -89,7 +87,7 @@ void UDiscordRpc::Initialize(const FString& applicationId,
     auto appId = StringCast<ANSICHAR>(*applicationId);
     auto steamId = StringCast<ANSICHAR>(*optionalSteamId);
     Discord_Initialize(
-      (const char*)appId.Get(), &handlers, autoRegister, (const char*)steamId.Get());
+        (const char*)appId.Get(), &handlers, autoRegister, (const char*)steamId.Get());
 }
 
 void UDiscordRpc::Shutdown()
@@ -136,7 +134,6 @@ void UDiscordRpc::UpdatePresence()
 
     auto spectateSecret = StringCast<ANSICHAR>(*RichPresence.spectateSecret);
     rp.spectateSecret = spectateSecret.Get();
-
     rp.startTimestamp = RichPresence.startTimestamp;
     rp.endTimestamp = RichPresence.endTimestamp;
     rp.partySize = RichPresence.partySize;
@@ -145,3 +142,15 @@ void UDiscordRpc::UpdatePresence()
 
     Discord_UpdatePresence(&rp);
 }
+
+void UDiscordRpc::ClearPresence()
+{
+    Discord_ClearPresence();
+}
+
+void UDiscordRpc::Respond(const FString& userId, int reply)
+{
+    UE_LOG(Discord, Log, TEXT("Responding %d to join request from %s"), reply, *userId);
+    FTCHARToUTF8 utf8_userid(*userId);
+    Discord_Respond(utf8_userid.Get(), reply);
+}

examples/unrealstatus/Plugins/discordrpc/Source/DiscordRpc/Private/DiscordRpcPrivatePCH.h

@@ -0,0 +1,2 @@
+#include "Core.h"
+#include "DiscordRpc.h"

examples/unrealstatus/Plugins/discordrpc/Source/DiscordRpc/Public/DiscordRpc.h

@@ -0,0 +1,20 @@
+// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "ModuleManager.h"
+
+class FDiscordRpcModule : public IModuleInterface {
+public:
+    /** IModuleInterface implementation */
+    virtual void StartupModule() override;
+    virtual void ShutdownModule() override;
+
+private:
+    /** Handle to the test dll we will load */
+    void* DiscordRpcLibraryHandle;
+
+    /** StartupModule is covered with defines, these functions are the place to put breakpoints */
+    static bool LoadDependency(const FString& Dir, const FString& Name, void*& Handle);
+    static void FreeDependency(void*& Handle);
+};

examples/unrealstatus/Plugins/discordrpc/Source/DiscordRpc/Public/DiscordRpcBlueprint.h

@@ -1,5 +1,3 @@
-
-
 #pragma once
 
 #include "CoreMinimal.h"
@@ -108,6 +106,16 @@ public:
               Category = "Discord")
     void UpdatePresence();
 
+    UFUNCTION(BlueprintCallable,
+              meta = (DisplayName = "Clear presence", Keywords = "Discord rpc"),
+              Category = "Discord")
+    void ClearPresence();
+
+    UFUNCTION(BlueprintCallable,
+              meta = (DisplayName = "Respond to join request", Keywords = "Discord rpc"),
+              Category = "Discord")
+    void Respond(const FString& userId, int reply);
+
     UPROPERTY(BlueprintReadOnly,
               meta = (DisplayName = "Is Discord connected", Keywords = "Discord rpc"),
               Category = "Discord")

examples/unrealstatus/Plugins/discordrpc/Source/ThirdParty/DiscordRpcLibrary/DiscordRpcLibrary.Build.cs

@@ -0,0 +1,59 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+using System.IO;
+using UnrealBuildTool;
+
+public class DiscordRpcLibrary : ModuleRules
+{
+#if WITH_FORWARDED_MODULE_RULES_CTOR
+    public DiscordRpcLibrary(ReadOnlyTargetRules Target) : base(Target)
+#else
+    public DiscordRpcLibrary(TargetInfo Target)
+#endif
+    {
+        Type = ModuleType.External;
+        Definitions.Add("DISCORD_DYNAMIC_LIB=1");
+
+        string BaseDirectory = Path.GetFullPath(Path.Combine(ModuleDirectory, "..", "..", "ThirdParty", "DiscordRpcLibrary"));
+
+        if (Target.Platform == UnrealTargetPlatform.Win64)
+        {
+            string lib = Path.Combine(BaseDirectory, "Win64");
+
+            // Include headers
+            PublicIncludePaths.Add(Path.Combine(BaseDirectory, "Include"));
+
+            // Add the import library
+            PublicLibraryPaths.Add(lib);
+            PublicAdditionalLibraries.Add(Path.Combine(lib, "discord-rpc.lib"));
+
+            // Dynamic
+            RuntimeDependencies.Add(new RuntimeDependency(Path.Combine(lib, "discord-rpc.dll")));
+            PublicDelayLoadDLLs.Add("discord-rpc.dll");
+        }
+        else if (Target.Platform == UnrealTargetPlatform.Linux)
+        {
+            string lib = Path.Combine(BaseDirectory, "Linux", "x86_64-unknown-linux-gnu");
+
+            // Include headers
+            PublicIncludePaths.Add(Path.Combine(BaseDirectory, "Include"));
+
+            // Add the import library
+            PublicLibraryPaths.Add(lib);
+            PublicAdditionalLibraries.Add(Path.Combine(lib, "libdiscord-rpc.so"));
+            RuntimeDependencies.Add(new RuntimeDependency(Path.Combine(lib, "libdiscord-rpc.so")));
+        }
+        else if (Target.Platform == UnrealTargetPlatform.Mac)
+        {
+            string lib = Path.Combine(BaseDirectory, "Mac");
+
+            // Include headers
+            PublicIncludePaths.Add(Path.Combine(BaseDirectory, "Include"));
+
+            // Add the import library
+            PublicLibraryPaths.Add(lib);
+            PublicAdditionalLibraries.Add(Path.Combine(lib, "libdiscord-rpc.dylib"));
+            RuntimeDependencies.Add(new RuntimeDependency(Path.Combine(lib, "libdiscord-rpc.dylib")));
+        }
+    }
+}

examples/unrealstatus/Plugins/discordrpc/Source/ThirdParty/discordrpcLibrary/discordrpcLibrary.Build.cs

@@ -1,27 +0,0 @@
-// Fill out your copyright notice in the Description page of Project Settings.
-
-using System.IO;
-using UnrealBuildTool;
-
-public class discordrpcLibrary : ModuleRules
-{
-	public discordrpcLibrary(ReadOnlyTargetRules Target) : base(Target)
-	{
-		Type = ModuleType.External;
-
-		if (Target.Platform == UnrealTargetPlatform.Win64)
-		{
-			// Add the import library
-			PublicIncludePaths.Add(Path.Combine(ModuleDirectory, "Include"));
-			PublicLibraryPaths.Add(Path.Combine(ModuleDirectory, "x64", "Release"));
-			PublicAdditionalLibraries.Add("discord-rpc.lib");
-
-			// Delay-load the DLL, so we can load it from the right place first
-			PublicDelayLoadDLLs.Add("discord-rpc.dll");
-		}
-        else if (Target.Platform == UnrealTargetPlatform.Mac)
-        {
-            PublicDelayLoadDLLs.Add(Path.Combine(ModuleDirectory, "Mac", "Release", "libdiscord-rpc.dylib"));
-        }
-	}
-}

examples/unrealstatus/Plugins/discordrpc/Source/discordrpc/Private/discordrpc.cpp

@@ -1,50 +0,0 @@
-// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
-
-#include "discordrpc.h"
-#include "Core.h"
-#include "IPluginManager.h"
-#include "ModuleManager.h"
-
-#define LOCTEXT_NAMESPACE "FdiscordrpcModule"
-
-void FdiscordrpcModule::StartupModule()
-{
-    // This code will execute after your module is loaded into memory; the exact timing is specified
-    // in the .uplugin file per-module
-
-    // Get the base directory of this plugin
-    FString BaseDir = IPluginManager::Get().FindPlugin("discordrpc")->GetBaseDir();
-
-    // Add on the relative location of the third party dll and load it
-    FString LibraryPath;
-#if PLATFORM_WINDOWS
-    LibraryPath = FPaths::Combine(
-      *BaseDir, TEXT("Binaries/ThirdParty/discordrpcLibrary/Win64/discord-rpc.dll"));
-#elif PLATFORM_MAC
-    LibraryPath = FPaths::Combine(
-      *BaseDir, TEXT("Source/ThirdParty/discordrpcLibrary/Mac/Release/libdiscord-rpc.dylib"));
-#endif // PLATFORM_WINDOWS
-
-    DiscordLibraryHandle =
-      !LibraryPath.IsEmpty() ? FPlatformProcess::GetDllHandle(*LibraryPath) : nullptr;
-
-    if (!DiscordLibraryHandle) {
-        FMessageDialog::Open(
-          EAppMsgType::Ok, LOCTEXT("ThirdPartyLibraryError", "Failed to load discord-rpc library"));
-    }
-}
-
-void FdiscordrpcModule::ShutdownModule()
-{
-    // This function may be called during shutdown to clean up your module.  For modules that
-    // support dynamic reloading,
-    // we call this function before unloading the module.
-
-    // Free the dll handle
-    FPlatformProcess::FreeDllHandle(DiscordLibraryHandle);
-    DiscordLibraryHandle = nullptr;
-}
-
-#undef LOCTEXT_NAMESPACE
-
-IMPLEMENT_MODULE(FdiscordrpcModule, discordrpc)

examples/unrealstatus/Plugins/discordrpc/Source/discordrpc/Public/discordrpc.h

@@ -1,16 +0,0 @@
-// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
-
-#pragma once
-
-#include "ModuleManager.h"
-
-class FdiscordrpcModule : public IModuleInterface {
-public:
-    /** IModuleInterface implementation */
-    virtual void StartupModule() override;
-    virtual void ShutdownModule() override;
-
-private:
-    /** Handle to the test dll we will load */
-    void* DiscordLibraryHandle;
-};

examples/unrealstatus/Plugins/discordrpc/Source/discordrpc/discordrpc.Build.cs

@@ -1,65 +0,0 @@
-// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
-
-using UnrealBuildTool;
-
-public class discordrpc : ModuleRules
-{
-	public discordrpc(ReadOnlyTargetRules Target) : base(Target)
-	{
-        Definitions.Add("DISCORD_DYNAMIC_LIB=1");
-        PCHUsage = ModuleRules.PCHUsageMode.UseExplicitOrSharedPCHs;
-
-		PublicIncludePaths.AddRange(
-			new string[] {
-				"discordrpc/Public"
-				// ... add public include paths required here ...
-			}
-			);
-				
-		
-		PrivateIncludePaths.AddRange(
-			new string[] {
-				"discordrpc/Private",
-                "../../../../../include"
-				// ... add other private include paths required here ...
-			}
-			);
-
-        PublicLibraryPaths.AddRange(
-            new string[] {
-                System.IO.Path.Combine(ModuleDirectory, "../../Binaries/ThirdParty/discordrpcLibrary/", Target.Platform.ToString()),
-			}
-            );
-
-
-        PublicDependencyModuleNames.AddRange(
-			new string[]
-			{
-                "CoreUObject",
-                "Engine",
-                "Slate",
-                "SlateCore",
-                "Core",
-				"discordrpcLibrary",
-				"Projects"
-				// ... add other public dependencies that you statically link with here ...
-			}
-			);
-			
-		
-		PrivateDependencyModuleNames.AddRange(
-			new string[]
-			{
-				// ... add private dependencies that you statically link with here ...	
-			}
-			);
-		
-		
-		DynamicallyLoadedModuleNames.AddRange(
-			new string[]
-			{
-				// ... add any modules that your module loads dynamically here ...
-			}
-			);
-	}
-}

include/discord_register.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#if defined(DISCORD_DYNAMIC_LIB)
+#  if defined(_WIN32)
+#    if defined(DISCORD_BUILDING_SDK)
+#      define DISCORD_EXPORT __declspec(dllexport)
+#    else
+#      define DISCORD_EXPORT __declspec(dllimport)
+#    endif
+#  else
+#    define DISCORD_EXPORT __attribute__((visibility("default")))
+#  endif
+#else
+#  define DISCORD_EXPORT
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+DISCORD_EXPORT void Discord_Register(const char* applicationId, const char* command);
+DISCORD_EXPORT void Discord_RegisterSteamGame(const char* applicationId, const char* steamId);
+
+#ifdef __cplusplus
+}
+#endif

include/discord_rpc.h

@@ -49,7 +49,7 @@ typedef struct DiscordJoinRequest {
 } DiscordJoinRequest;
 
 typedef struct DiscordEventHandlers {
-    void (*ready)();
+    void (*ready)(void);
     void (*disconnected)(int errorCode, const char* message);
     void (*errored)(int errorCode, const char* message);
     void (*joinGame)(const char* joinSecret);
@@ -76,9 +76,12 @@ DISCORD_EXPORT void Discord_UpdateConnection(void);
 #endif
 
 DISCORD_EXPORT void Discord_UpdatePresence(const DiscordRichPresence* presence);
+DISCORD_EXPORT void Discord_ClearPresence(void);
 
 DISCORD_EXPORT void Discord_Respond(const char* userid, /* DISCORD_REPLY_ */ int reply);
 
+DISCORD_EXPORT void Discord_UpdateHandlers(DiscordEventHandlers* handlers);
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif

src/CMakeLists.txt

@@ -6,9 +6,9 @@ option(USE_STATIC_CRT "Use /MT[d] for dynamic library" OFF)
 set(CMAKE_CXX_STANDARD 14)
 
 set(BASE_RPC_SRC
-    ${PROJECT_SOURCE_DIR}/include/discord-rpc.h
+    ${PROJECT_SOURCE_DIR}/include/discord_rpc.h
-    discord-rpc.cpp
+    discord_rpc.cpp
-    discord_register.h
+    ${PROJECT_SOURCE_DIR}/include/discord_register.h
     rpc_connection.h
     rpc_connection.cpp
     serialization.h
@@ -29,16 +29,18 @@ if(WIN32)
     set(BASE_RPC_SRC ${BASE_RPC_SRC} connection_win.cpp discord_register_win.cpp)
     add_library(discord-rpc ${BASE_RPC_SRC})
     if (MSVC)
-        set(CRT_FLAGS)
         if(USE_STATIC_CRT)
-            if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+            foreach(CompilerFlag
-                set(CRT_FLAGS /MTd)
+                    CMAKE_CXX_FLAGS
-            else()
+                    CMAKE_CXX_FLAGS_DEBUG
-                set(CRT_FLAGS /MT)
+                    CMAKE_CXX_FLAGS_RELEASE
-            endif()
+                    CMAKE_C_FLAGS
+                    CMAKE_C_FLAGS_DEBUG
+                    CMAKE_C_FLAGS_RELEASE)
+                string(REPLACE "/MD" "/MT" ${CompilerFlag} "${${CompilerFlag}}")
+            endforeach()
         endif(USE_STATIC_CRT)
         target_compile_options(discord-rpc PRIVATE /EHsc
-            ${CRT_FLAGS}
             /Wall
             /wd4100 # unreferenced formal parameter
             /wd4514 # unreferenced inline
@@ -53,7 +55,7 @@ if(WIN32)
             /wd5027 # move assignment operator was implicitly defined as deleted
         )
     endif(MSVC)
-    target_link_libraries(discord-rpc PRIVATE psapi)
+    target_link_libraries(discord-rpc PRIVATE psapi advapi32)
 endif(WIN32)
 
 if(UNIX)
@@ -127,6 +129,7 @@ install(
 
 install(
     FILES
-        "../include/discord-rpc.h"
+        "../include/discord_rpc.h"
+		"../include/discord_register.h"
     DESTINATION "include"
 )

src/discord_register.h

@@ -1,12 +0,0 @@
-#pragma once
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-void Discord_Register(const char* applicationId, const char* command);
-void Discord_RegisterSteamGame(const char* applicationId, const char* steamId);
-
-#ifdef __cplusplus
-}
-#endif

src/discord_register_linux.cpp

@@ -1,4 +1,5 @@
-#include "discord-rpc.h"
+#include "discord_rpc.h"
+#include "discord_register.h"
 #include <stdio.h>
 
 #include <errno.h>
@@ -8,7 +9,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-bool Mkdir(const char* path)
+static bool Mkdir(const char* path)
 {
     int result = mkdir(path, 0755);
     if (result == 0) {
@@ -21,7 +22,7 @@ bool Mkdir(const char* path)
 }
 
 // we want to register games so we can run them from Discord client as discord-<appid>://
-extern "C" void Discord_Register(const char* applicationId, const char* command)
+extern "C" DISCORD_EXPORT void Discord_Register(const char* applicationId, const char* command)
 {
     // Add a desktop file and update some mime handlers so that xdg-open does the right thing.
 
@@ -90,7 +91,7 @@ extern "C" void Discord_Register(const char* applicationId, const char* command)
     }
 }
 
-extern "C" void Discord_RegisterSteamGame(const char* applicationId, const char* steamId)
+extern "C" DISCORD_EXPORT void Discord_RegisterSteamGame(const char* applicationId, const char* steamId)
 {
     char command[256];
     sprintf(command, "xdg-open steam://rungameid/%s", steamId);

src/discord_register_osx.m

@@ -5,45 +5,28 @@
 
 #include "discord_register.h"
 
-static bool Mkdir(const char* path)
-{
-    int result = mkdir(path, 0755);
-    if (result == 0) {
-        return true;
-    }
-    if (errno == EEXIST) {
-        return true;
-    }
-    return false;
-}
-
 static void RegisterCommand(const char* applicationId, const char* command)
 {
     // There does not appear to be a way to register arbitrary commands on OSX, so instead we'll save the command
     // to a file in the Discord config path, and when it is needed, Discord can try to load the file there, open
     // the command therein (will pass to js's window.open, so requires a url-like thing)
 
-    const char* home = getenv("HOME");
+    // Note: will not work for sandboxed apps
+  	NSString *home = NSHomeDirectory();
     if (!home) {
         return;
     }
 
-    char path[2048];
+    NSString *path = [[[[[[home stringByAppendingPathComponent:@"Library"]
-    sprintf(path, "%s/Library/Application Support/discord", home);
+                                stringByAppendingPathComponent:@"Application Support"]
-    Mkdir(path);
+                                stringByAppendingPathComponent:@"discord"]
-    strcat(path, "/games");
+                                stringByAppendingPathComponent:@"games"]
-    Mkdir(path);
+                                stringByAppendingPathComponent:[NSString stringWithUTF8String:applicationId]]
-    strcat(path, "/");
+                                stringByAppendingPathExtension:@"json"];
-    strcat(path, applicationId);
+    [[NSFileManager defaultManager] createDirectoryAtPath:[path stringByDeletingLastPathComponent] withIntermediateDirectories:YES attributes:nil error:nil];
-    strcat(path, ".json");
 
-    FILE* f = fopen(path, "w");
+    NSString *jsonBuffer = [NSString stringWithFormat:@"{\"command\": \"%s\"}", command];
-    if (f) {
+    [jsonBuffer writeToFile:path atomically:NO encoding:NSUTF8StringEncoding error:nil];
-        char jsonBuffer[2048];
-        int len = snprintf(jsonBuffer, sizeof(jsonBuffer), "{\"command\": \"%s\"}", command);
-        fwrite(jsonBuffer, (size_t)len, 1, f);
-        fclose(f);
-    }
 }
 
 static void RegisterURL(const char* applicationId)
@@ -83,15 +66,15 @@ void Discord_Register(const char* applicationId, const char* command)
     }
     else {
         // raii lite
-        void* pool = [[NSAutoreleasePool alloc] init];
+        @autoreleasepool {
-        RegisterURL(applicationId);
+            RegisterURL(applicationId);
-        [(id)pool drain];
+        }
     }
 }
 
 void Discord_RegisterSteamGame(const char* applicationId, const char* steamId)
 {
     char command[256];
-    sprintf(command, "steam://rungameid/%s", steamId);
+    snprintf(command, 256, "steam://rungameid/%s", steamId);
     Discord_Register(applicationId, command);
 }

src/discord_register_win.cpp

@@ -1,17 +1,5 @@
-/*
+#include "discord_rpc.h"
- * MinGW defaults to WINNT 5.1 (aka XP), however some of functions used here
+#include "discord_register.h"
- * require WINNT >= 6.0 APIs, which are only visible when WINVER and
- * _WIN32_WINNT defines are set properly before including any system headers.
- * Such API is e.g. RegSetKeyValueW.
- */
-#ifdef __MINGW32__
-// 0x0600 == vista
-#define WINVER 0x0600
-#define _WIN32_WINNT 0x0600
-#endif // __MINGW32__
-
-#include "discord-rpc.h"
-#include <stdio.h>
 
 #define WIN32_LEAN_AND_MEAN
 #define NOMCX
@@ -19,9 +7,58 @@
 #define NOIME
 #include <windows.h>
 #include <psapi.h>
-#include <strsafe.h>
+#include <cwchar>
+#include <cstdio>
 
-void Discord_RegisterW(const wchar_t* applicationId, const wchar_t* command)
+/**
+ * Updated fixes for MinGW and WinXP
+ * This block is written the way it does not involve changing the rest of the code
+ * Checked to be compiling
+ * 1) strsafe.h belongs to Windows SDK and cannot be added to MinGW
+ * #include guarded, functions redirected to <string.h> substitutes
+ * 2) RegSetKeyValueW and LSTATUS are not declared in <winreg.h>
+ * The entire function is rewritten
+ */
+#ifdef __MINGW32__
+/// strsafe.h fixes
+static HRESULT StringCbPrintfW(LPWSTR pszDest, size_t cbDest, LPCWSTR pszFormat, ...)
+{
+    HRESULT ret;
+    va_list va;
+    va_start(va, pszFormat);
+    cbDest /= 2; // Size is divided by 2 to convert from bytes to wide characters - causes segfault othervise
+    ret = vsnwprintf(pszDest, cbDest, pszFormat, va);
+    pszDest[cbDest - 1] = 0; // Terminate the string in case a buffer overflow; -1 will be returned
+    va_end(va);
+    return ret;
+}
+#else
+#include <strsafe.h>
+#endif // __MINGW32__
+
+/// winreg.h fixes
+#ifndef LSTATUS
+#define LSTATUS LONG
+#endif
+#ifdef RegSetKeyValueW
+#undefine RegSetKeyValueW
+#endif
+#define RegSetKeyValueW regset
+static LSTATUS regset(HKEY hkey, LPCWSTR subkey, LPCWSTR name, DWORD type, const void *data, DWORD len)
+{
+    HKEY htkey = hkey, hsubkey = nullptr;
+    LSTATUS ret;
+    if (subkey && subkey[0])
+    {
+        if((ret = RegCreateKeyExW(hkey, subkey, 0, 0, 0, KEY_ALL_ACCESS, 0, &hsubkey, 0)) != ERROR_SUCCESS) return ret;
+        htkey = hsubkey;
+    }
+    ret = RegSetValueExW(htkey, name, 0, type, (const BYTE*)data, len);
+    if (hsubkey && hsubkey != hkey) RegCloseKey(hsubkey);
+    return ret;
+}
+
+static void Discord_RegisterW(const wchar_t* applicationId, const wchar_t* command)
 {
     // https://msdn.microsoft.com/en-us/library/aa767914(v=vs.85).aspx
     // we want to register games so we can run them as discord-<appid>://
@@ -35,7 +72,8 @@ void Discord_RegisterW(const wchar_t* applicationId, const wchar_t* command)
         StringCbPrintfW(openCommand, sizeof(openCommand), L"%s", command);
     }
     else {
-        StringCbCopyW(openCommand, sizeof(openCommand), exeFilePath);
+        //StringCbCopyW(openCommand, sizeof(openCommand), exeFilePath);
+        StringCbPrintfW(openCommand, sizeof(openCommand), L"%s", exeFilePath);
     }
 
     wchar_t protocolName[64];
@@ -84,7 +122,7 @@ void Discord_RegisterW(const wchar_t* applicationId, const wchar_t* command)
     RegCloseKey(key);
 }
 
-extern "C" void Discord_Register(const char* applicationId, const char* command)
+extern "C" DISCORD_EXPORT void Discord_Register(const char* applicationId, const char* command)
 {
     wchar_t appId[32];
     MultiByteToWideChar(CP_UTF8, 0, applicationId, -1, appId, 32);
@@ -100,7 +138,7 @@ extern "C" void Discord_Register(const char* applicationId, const char* command)
     Discord_RegisterW(appId, wcommand);
 }
 
-extern "C" void Discord_RegisterSteamGame(const char* applicationId, const char* steamId)
+extern "C" DISCORD_EXPORT void Discord_RegisterSteamGame(const char* applicationId, const char* steamId)
 {
     wchar_t appId[32];
     MultiByteToWideChar(CP_UTF8, 0, applicationId, -1, appId, 32);

src/discord_rpc.cpp

@@ -1,4 +1,4 @@
-#include "discord-rpc.h"
+#include "discord_rpc.h"
 
 #include "backoff.h"
 #include "discord_register.h"
@@ -47,6 +47,7 @@ struct JoinRequest {
 };
 
 static RpcConnection* Connection{nullptr};
+static DiscordEventHandlers QueuedHandlers{};
 static DiscordEventHandlers Handlers{};
 static std::atomic_bool WasJustConnected{false};
 static std::atomic_bool WasJustDisconnected{false};
@@ -60,6 +61,7 @@ static char LastErrorMessage[256];
 static int LastDisconnectErrorCode{0};
 static char LastDisconnectErrorMessage[256];
 static std::mutex PresenceMutex;
+static std::mutex HandlerMutex;
 static QueuedMessage QueuedPresence{};
 static MsgQueue<QueuedMessage, MessageQueueSize> SendQueue;
 static MsgQueue<JoinRequest, JoinQueueSize> JoinAskQueue;
@@ -212,15 +214,15 @@ static void Discord_UpdateConnection(void)
         // writes
         if (QueuedPresence.length) {
             QueuedMessage local;
-            PresenceMutex.lock();
+            {
-            local.Copy(QueuedPresence);
+                std::lock_guard<std::mutex> guard(PresenceMutex);
-            QueuedPresence.length = 0;
+                local.Copy(QueuedPresence);
-            PresenceMutex.unlock();
+                QueuedPresence.length = 0;
+            }
             if (!Connection->Write(local.buffer, local.length)) {
                 // if we fail to send, requeue
-                PresenceMutex.lock();
+                std::lock_guard<std::mutex> guard(PresenceMutex);
                 QueuedPresence.Copy(local);
-                PresenceMutex.unlock();
             }
         }
 
@@ -250,6 +252,19 @@ static bool RegisterForEvent(const char* evtName)
     return false;
 }
 
+static bool DeregisterForEvent(const char* evtName)
+{
+    auto qmessage = SendQueue.GetNextAddMessage();
+    if (qmessage) {
+        qmessage->length =
+          JsonWriteUnsubscribeCommand(qmessage->buffer, sizeof(qmessage->buffer), Nonce++, evtName);
+        SendQueue.CommitAdd();
+        SignalIOActivity();
+        return true;
+    }
+    return false;
+}
+
 extern "C" DISCORD_EXPORT void Discord_Initialize(const char* applicationId,
                                                   DiscordEventHandlers* handlers,
                                                   int autoRegister,
@@ -266,11 +281,18 @@ extern "C" DISCORD_EXPORT void Discord_Initialize(const char* applicationId,
 
     Pid = GetProcessId();
 
-    if (handlers) {
+    {
-        Handlers = *handlers;
+        std::lock_guard<std::mutex> guard(HandlerMutex);
-    }
+
-    else {
+        if (handlers) {
+            QueuedHandlers = *handlers;
+        }
+        else {
+            QueuedHandlers = {};
+        }
+
         Handlers = {};
+
     }
 
     if (Connection) {
@@ -279,24 +301,17 @@ extern "C" DISCORD_EXPORT void Discord_Initialize(const char* applicationId,
 
     Connection = RpcConnection::Create(applicationId);
     Connection->onConnect = []() {
+        Discord_UpdateHandlers(&QueuedHandlers);
         WasJustConnected.exchange(true);
         ReconnectTimeMs.reset();
-
-        if (Handlers.joinGame) {
-            RegisterForEvent("ACTIVITY_JOIN");
-        }
-
-        if (Handlers.spectateGame) {
-            RegisterForEvent("ACTIVITY_SPECTATE");
-        }
-
-        if (Handlers.joinRequest) {
-            RegisterForEvent("ACTIVITY_JOIN_REQUEST");
-        }
     };
     Connection->onDisconnect = [](int err, const char* message) {
         LastDisconnectErrorCode = err;
         StringCopy(LastDisconnectErrorMessage, message);
+        {
+            std::lock_guard<std::mutex> guard(HandlerMutex);
+            Handlers = {};
+        }
         WasJustDisconnected.exchange(true);
         UpdateReconnectTime();
     };
@@ -304,7 +319,7 @@ extern "C" DISCORD_EXPORT void Discord_Initialize(const char* applicationId,
     IoThread.Start();
 }
 
-extern "C" DISCORD_EXPORT void Discord_Shutdown()
+extern "C" DISCORD_EXPORT void Discord_Shutdown(void)
 {
     if (!Connection) {
         return;
@@ -318,13 +333,19 @@ extern "C" DISCORD_EXPORT void Discord_Shutdown()
 
 extern "C" DISCORD_EXPORT void Discord_UpdatePresence(const DiscordRichPresence* presence)
 {
-    PresenceMutex.lock();
+    {
-    QueuedPresence.length = JsonWriteRichPresenceObj(
+        std::lock_guard<std::mutex> guard(PresenceMutex);
-      QueuedPresence.buffer, sizeof(QueuedPresence.buffer), Nonce++, Pid, presence);
+        QueuedPresence.length = JsonWriteRichPresenceObj(
-    PresenceMutex.unlock();
+            QueuedPresence.buffer, sizeof(QueuedPresence.buffer), Nonce++, Pid, presence);
+    }
     SignalIOActivity();
 }
 
+extern "C" DISCORD_EXPORT void Discord_ClearPresence(void)
+{
+    Discord_UpdatePresence(nullptr);
+}
+
 extern "C" DISCORD_EXPORT void Discord_Respond(const char* userId, /* DISCORD_REPLY_ */ int reply)
 {
     // if we are not connected, let's not batch up stale messages for later
@@ -340,7 +361,7 @@ extern "C" DISCORD_EXPORT void Discord_Respond(const char* userId, /* DISCORD_RE
     }
 }
 
-extern "C" DISCORD_EXPORT void Discord_RunCallbacks()
+extern "C" DISCORD_EXPORT void Discord_RunCallbacks(void)
 {
     // Note on some weirdness: internally we might connect, get other signals, disconnect any number
     // of times inbetween calls here. Externally, we want the sequence to seem sane, so any other
@@ -355,25 +376,38 @@ extern "C" DISCORD_EXPORT void Discord_RunCallbacks()
 
     if (isConnected) {
         // if we are connected, disconnect cb first
+        std::lock_guard<std::mutex> guard(HandlerMutex);
         if (wasDisconnected && Handlers.disconnected) {
             Handlers.disconnected(LastDisconnectErrorCode, LastDisconnectErrorMessage);
         }
     }
 
-    if (WasJustConnected.exchange(false) && Handlers.ready) {
+    if (WasJustConnected.exchange(false)) {
-        Handlers.ready();
+        std::lock_guard<std::mutex> guard(HandlerMutex);
+        if (Handlers.ready) {
+            Handlers.ready();
+        }
     }
 
-    if (GotErrorMessage.exchange(false) && Handlers.errored) {
+    if (GotErrorMessage.exchange(false)) {
-        Handlers.errored(LastErrorCode, LastErrorMessage);
+        std::lock_guard<std::mutex> guard(HandlerMutex);
+        if (Handlers.errored) {
+            Handlers.errored(LastErrorCode, LastErrorMessage);
+        }
     }
 
-    if (WasJoinGame.exchange(false) && Handlers.joinGame) {
+    if (WasJoinGame.exchange(false)) {
-        Handlers.joinGame(JoinGameSecret);
+        std::lock_guard<std::mutex> guard(HandlerMutex);
+        if (Handlers.joinGame) {
+            Handlers.joinGame(JoinGameSecret);
+        }
     }
 
-    if (WasSpectateGame.exchange(false) && Handlers.spectateGame) {
+    if (WasSpectateGame.exchange(false)) {
-        Handlers.spectateGame(SpectateGameSecret);
+        std::lock_guard<std::mutex> guard(HandlerMutex);
+        if (Handlers.spectateGame) {
+            Handlers.spectateGame(SpectateGameSecret);
+        }
     }
 
     // Right now this batches up any requests and sends them all in a burst; I could imagine a world
@@ -383,17 +417,50 @@ extern "C" DISCORD_EXPORT void Discord_RunCallbacks()
     // not it should be trivial for the implementer to make a queue themselves.
     while (JoinAskQueue.HavePendingSends()) {
         auto req = JoinAskQueue.GetNextSendMessage();
-        if (Handlers.joinRequest) {
+        {
-            DiscordJoinRequest djr{req->userId, req->username, req->discriminator, req->avatar};
+            std::lock_guard<std::mutex> guard(HandlerMutex);
-            Handlers.joinRequest(&djr);
+            if (Handlers.joinRequest) {
+                DiscordJoinRequest djr{req->userId, req->username, req->discriminator, req->avatar};
+                Handlers.joinRequest(&djr);
+            }
         }
         JoinAskQueue.CommitSend();
     }
 
     if (!isConnected) {
         // if we are not connected, disconnect message last
+        std::lock_guard<std::mutex> guard(HandlerMutex);
         if (wasDisconnected && Handlers.disconnected) {
             Handlers.disconnected(LastDisconnectErrorCode, LastDisconnectErrorMessage);
         }
     }
 }
+
+extern "C" DISCORD_EXPORT void Discord_UpdateHandlers(DiscordEventHandlers* newHandlers)
+{
+    if (newHandlers) {
+
+#define HANDLE_EVENT_REGISTRATION(handler_name, event) \
+        if (!Handlers.handler_name && newHandlers->handler_name) { \
+            RegisterForEvent(event); \
+        } \
+        else if (Handlers.handler_name && !newHandlers->handler_name) { \
+            DeregisterForEvent(event); \
+        }
+
+        std::lock_guard<std::mutex> guard(HandlerMutex);
+        HANDLE_EVENT_REGISTRATION(joinGame, "ACTIVITY_JOIN")
+        HANDLE_EVENT_REGISTRATION(spectateGame, "ACTIVITY_SPECTATE")
+        HANDLE_EVENT_REGISTRATION(joinRequest, "ACTIVITY_JOIN_REQUEST")
+
+#undef HANDLE_EVENT_REGISTRATION
+
+        Handlers = *newHandlers;
+    }
+    else
+    {
+        std::lock_guard<std::mutex> guard(HandlerMutex);
+        Handlers = {};
+    }
+    return;
+}

src/dllmain.cpp

@@ -1,5 +1,7 @@
 #include <windows.h>
 
+// outsmart GCC's missing-declarations warning
+BOOL WINAPI DllMain(HMODULE, DWORD, LPVOID);
 BOOL WINAPI DllMain(HMODULE, DWORD, LPVOID)
 {
     return TRUE;

src/serialization.cpp

@@ -1,6 +1,6 @@
 #include "serialization.h"
 #include "connection.h"
-#include "discord-rpc.h"
+#include "discord_rpc.h"
 
 template <typename T>
 void NumberToString(char* dest, T number)
@@ -102,6 +102,7 @@ size_t JsonWriteRichPresenceObj(char* dest,
             WriteKey(writer, "pid");
             writer.Int(pid);
 
+            if (presence != nullptr)
             {
                 WriteObject activity(writer, "activity");
 
@@ -137,12 +138,10 @@ size_t JsonWriteRichPresenceObj(char* dest,
                     presence->partyMax) {
                     WriteObject party(writer, "party");
                     WriteOptionalString(writer, "id", presence->partyId);
-                    if (presence->partySize) {
+                    if (presence->partySize && presence->partyMax) {
                         WriteArray size(writer, "size");
                         writer.Int(presence->partySize);
-                        if (0 < presence->partyMax) {
+                        writer.Int(presence->partyMax);
-                            writer.Int(presence->partyMax);
-                        }
                     }
                 }
 
@@ -198,6 +197,25 @@ size_t JsonWriteSubscribeCommand(char* dest, size_t maxLen, int nonce, const cha
     return writer.Size();
 }
 
+size_t JsonWriteUnsubscribeCommand(char* dest, size_t maxLen, int nonce, const char* evtName)
+{
+    JsonWriter writer(dest, maxLen);
+
+    {
+        WriteObject obj(writer);
+
+        JsonWriteNonce(writer, nonce);
+
+        WriteKey(writer, "cmd");
+        writer.String("UNSUBSCRIBE");
+
+        WriteKey(writer, "evt");
+        writer.String(evtName);
+    }
+
+    return writer.Size();
+}
+
 size_t JsonWriteJoinReply(char* dest, size_t maxLen, const char* userId, int reply, int nonce)
 {
     JsonWriter writer(dest, maxLen);

src/serialization.h

@@ -2,6 +2,7 @@
 
 #include <stdint.h>
 
+#ifndef __MINGW32__
 #pragma warning(push)
 
 #pragma warning(disable : 4061) // enum is not explicitly handled by a case label
@@ -9,12 +10,15 @@
 #pragma warning(disable : 4464) // relative include path contains
 #pragma warning(disable : 4668) // is not defined as a preprocessor macro
 #pragma warning(disable : 6313) // Incorrect operator
+#endif // __MINGW32__
 
 #include "rapidjson/document.h"
 #include "rapidjson/stringbuffer.h"
 #include "rapidjson/writer.h"
 
+#ifndef __MINGW32__
 #pragma warning(pop)
+#endif // __MINGW32__
 
 // if only there was a standard library function for this
 template <size_t Len>
@@ -43,6 +47,8 @@ size_t JsonWriteRichPresenceObj(char* dest,
                                 const DiscordRichPresence* presence);
 size_t JsonWriteSubscribeCommand(char* dest, size_t maxLen, int nonce, const char* evtName);
 
+size_t JsonWriteUnsubscribeCommand(char* dest, size_t maxLen, int nonce, const char* evtName);
+
 size_t JsonWriteJoinReply(char* dest, size_t maxLen, const char* userId, int reply, int nonce);
 
 // I want to use as few allocations as I can get away with, and to do that with RapidJson, you need