88 lines
2.7 KiB
TypeScript
88 lines
2.7 KiB
TypeScript
import ipaddr from 'ipaddr.js'
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import { CONFIG } from '../initializers/config.js'
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import { UserModel } from '../models/user/user.js'
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export type SignupMode = 'direct-registration' | 'request-registration'
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export 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, errorMessage: 'User registration is not allowed' }
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}
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if (signupMode === 'direct-registration' && CONFIG.SIGNUP.REQUIRES_APPROVAL === true) {
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return { allowed: false, errorMessage: 'User registration requires approval' }
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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, errorMessage: 'User limit is reached on this instance' }
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}
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export function isSignupAllowedForCurrentIP (ip: string) {
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if (!ip) return false
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const addr = ipaddr.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.some(cidr => isIPV4Cidr(cidr) || isIPV6Cidr(cidr))) {
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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 = ipaddr.IPv4.parse(ip)
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const rangeList = {
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whitelist: CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isIPV4Cidr(cidr))
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.map(cidr => ipaddr.IPv4.parseCIDR(cidr)),
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blacklist: CONFIG.SIGNUP.FILTERS.CIDR.BLACKLIST.filter(cidr => isIPV4Cidr(cidr))
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.map(cidr => ipaddr.IPv4.parseCIDR(cidr))
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}
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matched = ipaddr.subnetMatch(addrV4, rangeList, 'unknown')
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} else if (addr.kind() === 'ipv6') {
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const addrV6 = ipaddr.IPv6.parse(ip)
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const rangeList = {
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whitelist: CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isIPV6Cidr(cidr))
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.map(cidr => ipaddr.IPv6.parseCIDR(cidr)),
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blacklist: CONFIG.SIGNUP.FILTERS.CIDR.BLACKLIST.filter(cidr => isIPV6Cidr(cidr))
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.map(cidr => ipaddr.IPv6.parseCIDR(cidr))
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}
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matched = ipaddr.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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// Private
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// ---------------------------------------------------------------------------
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function isIPV4Cidr (cidr: string) {
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try {
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ipaddr.IPv4.parseCIDR(cidr)
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return true
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} catch {
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return false
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}
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}
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function isIPV6Cidr (cidr: string) {
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try {
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ipaddr.IPv6.parseCIDR(cidr)
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return true
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} catch {
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return false
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}
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}
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