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161 lines
5.8 KiB
161 lines
5.8 KiB
2 years ago
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/// <reference types="node" />
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import { EventEmitter } from 'events';
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import { SocksClientOptions, SocksClientChainOptions, SocksRemoteHost, SocksProxy, SocksClientBoundEvent, SocksClientEstablishedEvent, SocksUDPFrameDetails } from '../common/constants';
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import { SocksClientError } from '../common/util';
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import { Duplex } from 'stream';
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declare interface SocksClient {
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on(event: 'error', listener: (err: SocksClientError) => void): this;
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on(event: 'bound', listener: (info: SocksClientBoundEvent) => void): this;
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on(event: 'established', listener: (info: SocksClientEstablishedEvent) => void): this;
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once(event: string, listener: (...args: any[]) => void): this;
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once(event: 'error', listener: (err: SocksClientError) => void): this;
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once(event: 'bound', listener: (info: SocksClientBoundEvent) => void): this;
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once(event: 'established', listener: (info: SocksClientEstablishedEvent) => void): this;
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emit(event: string | symbol, ...args: any[]): boolean;
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emit(event: 'error', err: SocksClientError): boolean;
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emit(event: 'bound', info: SocksClientBoundEvent): boolean;
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emit(event: 'established', info: SocksClientEstablishedEvent): boolean;
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}
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declare class SocksClient extends EventEmitter implements SocksClient {
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private options;
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private socket;
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private state;
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private receiveBuffer;
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private nextRequiredPacketBufferSize;
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private socks5ChosenAuthType;
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private onDataReceived;
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private onClose;
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private onError;
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private onConnect;
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constructor(options: SocksClientOptions);
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/**
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* Creates a new SOCKS connection.
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*
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* Note: Supports callbacks and promises. Only supports the connect command.
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* @param options { SocksClientOptions } Options.
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* @param callback { Function } An optional callback function.
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* @returns { Promise }
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*/
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static createConnection(options: SocksClientOptions, callback?: Function): Promise<SocksClientEstablishedEvent>;
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/**
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* Creates a new SOCKS connection chain to a destination host through 2 or more SOCKS proxies.
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*
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* Note: Supports callbacks and promises. Only supports the connect method.
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* Note: Implemented via createConnection() factory function.
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* @param options { SocksClientChainOptions } Options
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* @param callback { Function } An optional callback function.
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* @returns { Promise }
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*/
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static createConnectionChain(options: SocksClientChainOptions, callback?: Function): Promise<SocksClientEstablishedEvent>;
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/**
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* Creates a SOCKS UDP Frame.
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* @param options
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*/
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static createUDPFrame(options: SocksUDPFrameDetails): Buffer;
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/**
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* Parses a SOCKS UDP frame.
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* @param data
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*/
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static parseUDPFrame(data: Buffer): SocksUDPFrameDetails;
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/**
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* Internal state setter. If the SocksClient is in an error state, it cannot be changed to a non error state.
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*/
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private setState;
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/**
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* Starts the connection establishment to the proxy and destination.
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* @param existingSocket Connected socket to use instead of creating a new one (internal use).
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*/
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connect(existingSocket?: Duplex): void;
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private getSocketOptions;
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/**
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* Handles internal Socks timeout callback.
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* Note: If the Socks client is not BoundWaitingForConnection or Established, the connection will be closed.
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*/
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private onEstablishedTimeout;
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/**
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* Handles Socket connect event.
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*/
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private onConnectHandler;
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/**
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* Handles Socket data event.
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* @param data
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*/
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private onDataReceivedHandler;
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/**
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* Handles processing of the data we have received.
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*/
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private processData;
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/**
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* Handles Socket close event.
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* @param had_error
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*/
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private onCloseHandler;
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/**
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* Handles Socket error event.
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* @param err
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*/
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private onErrorHandler;
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/**
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* Removes internal event listeners on the underlying Socket.
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*/
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private removeInternalSocketHandlers;
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/**
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* Closes and destroys the underlying Socket. Emits an error event.
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* @param err { String } An error string to include in error event.
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*/
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private closeSocket;
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/**
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* Sends initial Socks v4 handshake request.
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*/
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private sendSocks4InitialHandshake;
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/**
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* Handles Socks v4 handshake response.
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* @param data
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*/
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private handleSocks4FinalHandshakeResponse;
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/**
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* Handles Socks v4 incoming connection request (BIND)
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* @param data
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*/
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private handleSocks4IncomingConnectionResponse;
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/**
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* Sends initial Socks v5 handshake request.
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*/
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private sendSocks5InitialHandshake;
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/**
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* Handles initial Socks v5 handshake response.
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* @param data
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*/
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private handleInitialSocks5HandshakeResponse;
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/**
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* Sends Socks v5 user & password auth handshake.
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*
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* Note: No auth and user/pass are currently supported.
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*/
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private sendSocks5UserPassAuthentication;
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private sendSocks5CustomAuthentication;
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private handleSocks5CustomAuthHandshakeResponse;
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private handleSocks5AuthenticationNoAuthHandshakeResponse;
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private handleSocks5AuthenticationUserPassHandshakeResponse;
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/**
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* Handles Socks v5 auth handshake response.
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* @param data
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*/
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private handleInitialSocks5AuthenticationHandshakeResponse;
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/**
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* Sends Socks v5 final handshake request.
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*/
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private sendSocks5CommandRequest;
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/**
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* Handles Socks v5 final handshake response.
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* @param data
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*/
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private handleSocks5FinalHandshakeResponse;
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/**
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* Handles Socks v5 incoming connection request (BIND).
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*/
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private handleSocks5IncomingConnectionResponse;
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get socksClientOptions(): SocksClientOptions;
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}
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export { SocksClient, SocksClientOptions, SocksClientChainOptions, SocksClientError, SocksRemoteHost, SocksProxy, SocksUDPFrameDetails, };
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