blob: 3d66172fd8bc316772ac1878226117b812d73232 (
plain)
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
|
import * as Limiter from 'ratelimiter';
import limiterDB from '../../db/redis';
import { IEndpoint } from './endpoints';
import getAcct from '../../misc/acct/render';
import { IUser } from '../../models/user';
import Logger from '../../services/logger';
const logger = new Logger('limiter');
export default (endpoint: IEndpoint, user: IUser) => new Promise((ok, reject) => {
// Redisがインストールされてない場合は常に許可
if (limiterDB == null) {
ok();
return;
}
const limitation = endpoint.meta.limit;
const key = limitation.hasOwnProperty('key')
? limitation.key
: endpoint.name;
const hasShortTermLimit =
limitation.hasOwnProperty('minInterval');
const hasLongTermLimit =
limitation.hasOwnProperty('duration') &&
limitation.hasOwnProperty('max');
if (hasShortTermLimit) {
min();
} else if (hasLongTermLimit) {
max();
} else {
ok();
}
// Short-term limit
function min() {
const minIntervalLimiter = new Limiter({
id: `${user._id}:${key}:min`,
duration: limitation.minInterval,
max: 1,
db: limiterDB
});
minIntervalLimiter.get((err, info) => {
if (err) {
return reject('ERR');
}
logger.debug(`@${getAcct(user)} ${endpoint.name} min remaining: ${info.remaining}`);
if (info.remaining === 0) {
reject('BRIEF_REQUEST_INTERVAL');
} else {
if (hasLongTermLimit) {
max();
} else {
ok();
}
}
});
}
// Long term limit
function max() {
const limiter = new Limiter({
id: `${user._id}:${key}`,
duration: limitation.duration,
max: limitation.max,
db: limiterDB
});
limiter.get((err, info) => {
if (err) {
return reject('ERR');
}
logger.debug(`@${getAcct(user)} ${endpoint.name} max remaining: ${info.remaining}`);
if (info.remaining === 0) {
reject('RATE_LIMIT_EXCEEDED');
} else {
ok();
}
});
}
});
|
