1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
import { WebSocket } from "@fosscord/gateway";
import {
EVENTEnum,
EventOpts,
getPermission,
listenEvent,
ListenEventOpts,
Member,
Permissions,
RabbitMQ,
Recipient,
Relationship,
RelationshipType
} from "@fosscord/util";
import { Channel as AMQChannel } from "amqplib";
import { OPCODES } from "../util/Constants";
import { Send } from "../util/Send";
// TODO: close connection on Invalidated Token
// TODO: check intent
// TODO: Guild Member Update is sent for current-user updates regardless of whether the GUILD_MEMBERS intent is set.
// Sharding: calculate if the current shard id matches the formula: shard_id = (guild_id >> 22) % num_shards
// https://discord.com/developers/docs/topics/gateway#sharding
export function handlePresenceUpdate(this: WebSocket, { event, acknowledge, data }: EventOpts) {
acknowledge?.();
if (event === EVENTEnum.PresenceUpdate) {
return Send(this, {
op: OPCODES.Dispatch,
t: event,
d: data,
s: this.sequence++
});
}
}
// TODO: use already queried guilds/channels of Identify and don't fetch them again
export async function setupListener(this: WebSocket) {
const [members, recipients, relationships] = await Promise.all([
Member.find({
where: { id: this.user_id },
relations: ["guild", "guild.channels"]
}),
Recipient.find({
where: { user_id: this.user_id, closed: false },
relations: ["channel"]
}),
Relationship.find({
where: {
from_id: this.user_id,
type: RelationshipType.friends
}
})
]);
const guilds = members.map((x) => x.guild);
const dm_channels = recipients.map((x) => x.channel);
const opts: { acknowledge: boolean; channel?: AMQChannel } = {
acknowledge: true
};
this.listen_options = opts;
const consumer = consume.bind(this);
if (RabbitMQ.connection) {
opts.channel = await RabbitMQ.connection.createChannel();
// @ts-ignore
opts.channel.queues = {};
}
this.events[this.user_id] = await listenEvent(this.user_id, consumer, opts);
relationships.forEach(async (relationship) => {
this.events[relationship.to_id] = await listenEvent(relationship.to_id, handlePresenceUpdate.bind(this), opts);
});
dm_channels.forEach(async (channel) => {
this.events[channel.id] = await listenEvent(channel.id, consumer, opts);
});
guilds.forEach(async (guild) => {
const permission = await getPermission(this.user_id, guild.id);
this.permissions[guild.id] = permission;
this.events[guild.id] = await listenEvent(guild.id, consumer, opts);
guild.channels.forEach(async (channel) => {
if (permission.overwriteChannel(channel.permission_overwrites!).has("VIEW_CHANNEL")) {
this.events[channel.id] = await listenEvent(channel.id, consumer, opts);
}
});
});
this.once("close", () => {
if (opts.channel) opts.channel.close();
else {
Object.values(this.events).forEach((x) => x());
Object.values(this.member_events).forEach((x) => x());
}
});
}
// TODO: only subscribe for events that are in the connection intents
async function consume(this: WebSocket, opts: EventOpts) {
const { data, event } = opts;
let id = data.id as string;
const permission = this.permissions[id] || new Permissions("ADMINISTRATOR"); // default permission for dm
const consumer = consume.bind(this);
const listenOpts = opts as ListenEventOpts;
opts.acknowledge?.();
// console.log("event", event);
// subscription managment
switch (event) {
case "GUILD_MEMBER_REMOVE":
this.member_events[data.user.id]?.();
delete this.member_events[data.user.id];
case "GUILD_MEMBER_ADD":
if (this.member_events[data.user.id]) break; // already subscribed
this.member_events[data.user.id] = await listenEvent(data.user.id, handlePresenceUpdate.bind(this), this.listen_options);
break;
case "GUILD_MEMBER_REMOVE":
if (!this.member_events[data.user.id]) break;
this.member_events[data.user.id]();
break;
case "RELATIONSHIP_REMOVE":
case "CHANNEL_DELETE":
case "GUILD_DELETE":
delete this.events[id];
opts.cancel();
break;
case "CHANNEL_CREATE":
if (!permission.overwriteChannel(data.permission_overwrites).has("VIEW_CHANNEL")) {
return;
}
this.events[id] = await listenEvent(id, consumer, listenOpts);
break;
case "RELATIONSHIP_ADD":
this.events[data.user.id] = await listenEvent(data.user.id, handlePresenceUpdate.bind(this), this.listen_options);
break;
case "GUILD_CREATE":
this.events[id] = await listenEvent(id, consumer, listenOpts);
break;
case "CHANNEL_UPDATE":
const exists = this.events[id];
// @ts-ignore
if (permission.overwriteChannel(data.permission_overwrites).has("VIEW_CHANNEL")) {
if (exists) break;
this.events[id] = await listenEvent(id, consumer, listenOpts);
} else {
if (!exists) return; // return -> do not send channel update events for hidden channels
opts.cancel(id);
delete this.events[id];
}
break;
}
// permission checking
switch (event) {
case "INVITE_CREATE":
case "INVITE_DELETE":
case "GUILD_INTEGRATIONS_UPDATE":
if (!permission.has("MANAGE_GUILD")) return;
break;
case "WEBHOOKS_UPDATE":
if (!permission.has("MANAGE_WEBHOOKS")) return;
break;
case "GUILD_MEMBER_ADD":
case "GUILD_MEMBER_REMOVE":
case "GUILD_MEMBER_UPDATE":
// only send them, if the user subscribed for this part of the member list, or is a bot
case "PRESENCE_UPDATE": // exception if user is friend
break;
case "GUILD_BAN_ADD":
case "GUILD_BAN_REMOVE":
if (!permission.has("BAN_MEMBERS")) break;
break;
case "VOICE_STATE_UPDATE":
case "MESSAGE_CREATE":
case "MESSAGE_DELETE":
case "MESSAGE_DELETE_BULK":
case "MESSAGE_UPDATE":
case "CHANNEL_PINS_UPDATE":
case "MESSAGE_REACTION_ADD":
case "MESSAGE_REACTION_REMOVE":
case "MESSAGE_REACTION_REMOVE_ALL":
case "MESSAGE_REACTION_REMOVE_EMOJI":
case "TYPING_START":
// only gets send if the user is alowed to view the current channel
if (!permission.has("VIEW_CHANNEL")) return;
break;
case "GUILD_CREATE":
case "GUILD_DELETE":
case "GUILD_UPDATE":
case "GUILD_ROLE_CREATE":
case "GUILD_ROLE_UPDATE":
case "GUILD_ROLE_DELETE":
case "CHANNEL_CREATE":
case "CHANNEL_DELETE":
case "CHANNEL_UPDATE":
case "GUILD_EMOJIS_UPDATE":
case "READY": // will be sent by the gateway
case "USER_UPDATE":
case "APPLICATION_COMMAND_CREATE":
case "APPLICATION_COMMAND_DELETE":
case "APPLICATION_COMMAND_UPDATE":
default:
// always gets sent
// Any events not defined in an intent are considered "passthrough" and will always be sent
break;
}
Send(this, {
op: OPCODES.Dispatch,
t: event,
d: data,
s: this.sequence++
});
}
|
