75 lines
2.3 KiB
TypeScript
75 lines
2.3 KiB
TypeScript
import { IPv4, IPv6, parse, subnetMatch } from 'ipaddr.js'
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import { CONFIG } from '../initializers/config'
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import { UserModel } from '../models/user/user'
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const isCidr = require('is-cidr')
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export type SignupMode = 'direct-registration' | 'request-registration'
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async function isSignupAllowed (options: {
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signupMode: SignupMode
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ip: string // For plugins
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body?: any
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}): Promise<{ allowed: boolean, errorMessage?: string }> {
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const { signupMode } = options
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if (CONFIG.SIGNUP.ENABLED === false) {
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return { allowed: false }
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}
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if (signupMode === 'direct-registration' && CONFIG.SIGNUP.REQUIRES_APPROVAL === true) {
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return { allowed: false }
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}
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// No limit and signup is enabled
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if (CONFIG.SIGNUP.LIMIT === -1) {
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return { allowed: true }
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}
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const totalUsers = await UserModel.countTotal()
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return { allowed: totalUsers < CONFIG.SIGNUP.LIMIT }
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}
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function isSignupAllowedForCurrentIP (ip: string) {
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if (!ip) return false
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const addr = parse(ip)
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const excludeList = [ 'blacklist' ]
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let matched = ''
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// if there is a valid, non-empty whitelist, we exclude all unknown addresses too
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if (CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isCidr(cidr)).length > 0) {
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excludeList.push('unknown')
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}
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if (addr.kind() === 'ipv4') {
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const addrV4 = IPv4.parse(ip)
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const rangeList = {
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whitelist: CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isCidr.v4(cidr))
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.map(cidr => IPv4.parseCIDR(cidr)),
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blacklist: CONFIG.SIGNUP.FILTERS.CIDR.BLACKLIST.filter(cidr => isCidr.v4(cidr))
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.map(cidr => IPv4.parseCIDR(cidr))
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}
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matched = subnetMatch(addrV4, rangeList, 'unknown')
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} else if (addr.kind() === 'ipv6') {
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const addrV6 = IPv6.parse(ip)
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const rangeList = {
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whitelist: CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isCidr.v6(cidr))
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.map(cidr => IPv6.parseCIDR(cidr)),
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blacklist: CONFIG.SIGNUP.FILTERS.CIDR.BLACKLIST.filter(cidr => isCidr.v6(cidr))
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.map(cidr => IPv6.parseCIDR(cidr))
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}
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matched = subnetMatch(addrV6, rangeList, 'unknown')
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}
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return !excludeList.includes(matched)
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}
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// ---------------------------------------------------------------------------
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export {
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isSignupAllowed,
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isSignupAllowedForCurrentIP
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}
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