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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 | 3x 3x 6x 6x 6x 4x 2x 1x 1x 1x 1x 2x 1x 2x 2x 1x 1x 1x | import * as net from 'net'; import { FlowHost, FlowRuleGroup, ResolvedFlowHost } from "../../FlowDefinitions"; import { LoggerFactory } from "../../logger-factory"; import { Logger } from "../../logger-type"; import { HostResolver } from "./HostResolver"; export class SimpleHostResolver implements HostResolver { logger: Logger; IP_V4_CIDR_REGEX = /^([0-9]{1,3}\.){3}[0-9]{1,3}(\/([0-9]|[1-2][0-9]|3[0-2]))?$/; IP_V6_CIDR_REGEX = /^s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:)))(%.+)?s*(\/([0-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8]))?$/; constructor(loggerFactory: LoggerFactory) { this.logger = loggerFactory.getLogger('SimpleObjectResolver'); } canResolve(target: FlowHost): boolean { if (target.type === 'Address') { if (this.isCidr(target.value)) { return true; } //https://nodejs.org/api/net.html#net_net_isip_input , where 0 invalid, 4 ipv4, 6 ipv6 else Eif (net.isIP(target.value) === 0) { this.logger.error('Invalid ip address', target); return false; } else { return true; } } else { return false; } } async resolve(target: FlowHost, ruleGroup?: FlowRuleGroup): Promise<ResolvedFlowHost> { return { ...target, addresses: [target.value] } } isCidr(inputCidr: string) { Iif (!inputCidr) { return false } if (inputCidr.match(this.IP_V4_CIDR_REGEX) || inputCidr.match(this.IP_V6_CIDR_REGEX)) { return true; } else { this.logger.info('Invalid cidr', inputCidr); return false; } }; } |