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06215f15 C |
1 | import { CONFIG } from '../initializers' |
2 | import { UserModel } from '../models/account/user' | |
3 | import * as ipaddr from 'ipaddr.js' | |
4 | const isCidr = require('is-cidr') | |
5 | ||
6 | async function isSignupAllowed () { | |
7 | if (CONFIG.SIGNUP.ENABLED === false) { | |
8 | return false | |
9 | } | |
10 | ||
11 | // No limit and signup is enabled | |
12 | if (CONFIG.SIGNUP.LIMIT === -1) { | |
13 | return true | |
14 | } | |
15 | ||
16 | const totalUsers = await UserModel.countTotal() | |
17 | ||
18 | return totalUsers < CONFIG.SIGNUP.LIMIT | |
19 | } | |
20 | ||
21 | function isSignupAllowedForCurrentIP (ip: string) { | |
22 | const addr = ipaddr.parse(ip) | |
23 | let excludeList = [ 'blacklist' ] | |
24 | let matched = '' | |
25 | ||
26 | // if there is a valid, non-empty whitelist, we exclude all unknown adresses too | |
27 | if (CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isCidr(cidr)).length > 0) { | |
28 | excludeList.push('unknown') | |
29 | } | |
30 | ||
31 | if (addr.kind() === 'ipv4') { | |
32 | const addrV4 = ipaddr.IPv4.parse(ip) | |
33 | const rangeList = { | |
34 | whitelist: CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isCidr.v4(cidr)) | |
35 | .map(cidr => ipaddr.IPv4.parseCIDR(cidr)), | |
36 | blacklist: CONFIG.SIGNUP.FILTERS.CIDR.BLACKLIST.filter(cidr => isCidr.v4(cidr)) | |
37 | .map(cidr => ipaddr.IPv4.parseCIDR(cidr)) | |
38 | } | |
39 | matched = ipaddr.subnetMatch(addrV4, rangeList, 'unknown') | |
40 | } else if (addr.kind() === 'ipv6') { | |
41 | const addrV6 = ipaddr.IPv6.parse(ip) | |
42 | const rangeList = { | |
43 | whitelist: CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isCidr.v6(cidr)) | |
44 | .map(cidr => ipaddr.IPv6.parseCIDR(cidr)), | |
45 | blacklist: CONFIG.SIGNUP.FILTERS.CIDR.BLACKLIST.filter(cidr => isCidr.v6(cidr)) | |
46 | .map(cidr => ipaddr.IPv6.parseCIDR(cidr)) | |
47 | } | |
48 | matched = ipaddr.subnetMatch(addrV6, rangeList, 'unknown') | |
49 | } | |
50 | ||
51 | return !excludeList.includes(matched) | |
52 | } | |
53 | ||
54 | // --------------------------------------------------------------------------- | |
55 | ||
56 | export { | |
57 | isSignupAllowed, | |
58 | isSignupAllowedForCurrentIP | |
59 | } |