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/*
Fosscord: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2023 Fosscord and Fosscord Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { CLOSECODES, Payload, Send, WebSocket } from "@fosscord/gateway";
import {
validateSchema,
VoiceIdentifySchema,
VoiceState,
} from "@fosscord/util";
import { endpoint, getClients, VoiceOPCodes, PublicIP } from "@fosscord/webrtc";
import SemanticSDP from "semantic-sdp";
import defaultSDP from "./sdp.json";
export async function onIdentify(this: WebSocket, data: Payload) {
clearTimeout(this.readyTimeout);
// eslint-disable-next-line @typescript-eslint/no-unused-vars
const { server_id, user_id, session_id, token, streams, video } =
validateSchema("VoiceIdentifySchema", data.d) as VoiceIdentifySchema;
const voiceState = await VoiceState.findOne({
where: { guild_id: server_id, user_id, token, session_id },
});
if (!voiceState) return this.close(CLOSECODES.Authentication_failed);
this.user_id = user_id;
this.session_id = session_id;
const sdp = SemanticSDP.SDPInfo.expand(defaultSDP);
sdp.setDTLS(
SemanticSDP.DTLSInfo.expand({
setup: "actpass",
hash: "sha-256",
fingerprint: endpoint.getDTLSFingerprint(),
}),
);
this.webrtcClient = {
websocket: this,
out: {
tracks: new Map(),
},
in: {
audio_ssrc: 0,
video_ssrc: 0,
rtx_ssrc: 0,
},
sdp,
channel_id: voiceState.channel_id,
};
const clients = getClients(voiceState.channel_id);
clients.add(this.webrtcClient);
this.on("close", () => {
if (this.webrtcClient) clients.delete(this.webrtcClient);
});
await Send(this, {
op: VoiceOPCodes.READY,
d: {
streams: [
// {
// type: "video",
// ssrc: this.webrtcClient.in.video_ssrc + 1,
// rtx_ssrc: this.webrtcClient.in.video_ssrc + 2,
// rid: "100",
// quality: 100,
// active: false,
// },
],
ssrc: this.webrtcClient.in.audio_ssrc,
port: endpoint.getLocalPort(),
modes: [
"aead_aes256_gcm_rtpsize",
"aead_aes256_gcm",
"xsalsa20_poly1305_lite_rtpsize",
"xsalsa20_poly1305_lite",
"xsalsa20_poly1305_suffix",
"xsalsa20_poly1305",
],
ip: PublicIP,
experiments: [],
},
});
}
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