test
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mol
2024-07-06 22:23:31 +08:00
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.SOCKS5_NO_ACCEPTABLE_AUTH = exports.SOCKS5_CUSTOM_AUTH_END = exports.SOCKS5_CUSTOM_AUTH_START = exports.SOCKS_INCOMING_PACKET_SIZES = exports.SocksClientState = exports.Socks5Response = exports.Socks5HostType = exports.Socks5Auth = exports.Socks4Response = exports.SocksCommand = exports.ERRORS = exports.DEFAULT_TIMEOUT = void 0;
const DEFAULT_TIMEOUT = 30000;
exports.DEFAULT_TIMEOUT = DEFAULT_TIMEOUT;
// prettier-ignore
const ERRORS = {
InvalidSocksCommand: 'An invalid SOCKS command was provided. Valid options are connect, bind, and associate.',
InvalidSocksCommandForOperation: 'An invalid SOCKS command was provided. Only a subset of commands are supported for this operation.',
InvalidSocksCommandChain: 'An invalid SOCKS command was provided. Chaining currently only supports the connect command.',
InvalidSocksClientOptionsDestination: 'An invalid destination host was provided.',
InvalidSocksClientOptionsExistingSocket: 'An invalid existing socket was provided. This should be an instance of stream.Duplex.',
InvalidSocksClientOptionsProxy: 'Invalid SOCKS proxy details were provided.',
InvalidSocksClientOptionsTimeout: 'An invalid timeout value was provided. Please enter a value above 0 (in ms).',
InvalidSocksClientOptionsProxiesLength: 'At least two socks proxies must be provided for chaining.',
InvalidSocksClientOptionsCustomAuthRange: 'Custom auth must be a value between 0x80 and 0xFE.',
InvalidSocksClientOptionsCustomAuthOptions: 'When a custom_auth_method is provided, custom_auth_request_handler, custom_auth_response_size, and custom_auth_response_handler must also be provided and valid.',
NegotiationError: 'Negotiation error',
SocketClosed: 'Socket closed',
ProxyConnectionTimedOut: 'Proxy connection timed out',
InternalError: 'SocksClient internal error (this should not happen)',
InvalidSocks4HandshakeResponse: 'Received invalid Socks4 handshake response',
Socks4ProxyRejectedConnection: 'Socks4 Proxy rejected connection',
InvalidSocks4IncomingConnectionResponse: 'Socks4 invalid incoming connection response',
Socks4ProxyRejectedIncomingBoundConnection: 'Socks4 Proxy rejected incoming bound connection',
InvalidSocks5InitialHandshakeResponse: 'Received invalid Socks5 initial handshake response',
InvalidSocks5IntiailHandshakeSocksVersion: 'Received invalid Socks5 initial handshake (invalid socks version)',
InvalidSocks5InitialHandshakeNoAcceptedAuthType: 'Received invalid Socks5 initial handshake (no accepted authentication type)',
InvalidSocks5InitialHandshakeUnknownAuthType: 'Received invalid Socks5 initial handshake (unknown authentication type)',
Socks5AuthenticationFailed: 'Socks5 Authentication failed',
InvalidSocks5FinalHandshake: 'Received invalid Socks5 final handshake response',
InvalidSocks5FinalHandshakeRejected: 'Socks5 proxy rejected connection',
InvalidSocks5IncomingConnectionResponse: 'Received invalid Socks5 incoming connection response',
Socks5ProxyRejectedIncomingBoundConnection: 'Socks5 Proxy rejected incoming bound connection',
};
exports.ERRORS = ERRORS;
const SOCKS_INCOMING_PACKET_SIZES = {
Socks5InitialHandshakeResponse: 2,
Socks5UserPassAuthenticationResponse: 2,
// Command response + incoming connection (bind)
Socks5ResponseHeader: 5,
Socks5ResponseIPv4: 10,
Socks5ResponseIPv6: 22,
Socks5ResponseHostname: (hostNameLength) => hostNameLength + 7,
// Command response + incoming connection (bind)
Socks4Response: 8, // 2 header + 2 port + 4 ip
};
exports.SOCKS_INCOMING_PACKET_SIZES = SOCKS_INCOMING_PACKET_SIZES;
var SocksCommand;
(function (SocksCommand) {
SocksCommand[SocksCommand["connect"] = 1] = "connect";
SocksCommand[SocksCommand["bind"] = 2] = "bind";
SocksCommand[SocksCommand["associate"] = 3] = "associate";
})(SocksCommand || (SocksCommand = {}));
exports.SocksCommand = SocksCommand;
var Socks4Response;
(function (Socks4Response) {
Socks4Response[Socks4Response["Granted"] = 90] = "Granted";
Socks4Response[Socks4Response["Failed"] = 91] = "Failed";
Socks4Response[Socks4Response["Rejected"] = 92] = "Rejected";
Socks4Response[Socks4Response["RejectedIdent"] = 93] = "RejectedIdent";
})(Socks4Response || (Socks4Response = {}));
exports.Socks4Response = Socks4Response;
var Socks5Auth;
(function (Socks5Auth) {
Socks5Auth[Socks5Auth["NoAuth"] = 0] = "NoAuth";
Socks5Auth[Socks5Auth["GSSApi"] = 1] = "GSSApi";
Socks5Auth[Socks5Auth["UserPass"] = 2] = "UserPass";
})(Socks5Auth || (Socks5Auth = {}));
exports.Socks5Auth = Socks5Auth;
const SOCKS5_CUSTOM_AUTH_START = 0x80;
exports.SOCKS5_CUSTOM_AUTH_START = SOCKS5_CUSTOM_AUTH_START;
const SOCKS5_CUSTOM_AUTH_END = 0xfe;
exports.SOCKS5_CUSTOM_AUTH_END = SOCKS5_CUSTOM_AUTH_END;
const SOCKS5_NO_ACCEPTABLE_AUTH = 0xff;
exports.SOCKS5_NO_ACCEPTABLE_AUTH = SOCKS5_NO_ACCEPTABLE_AUTH;
var Socks5Response;
(function (Socks5Response) {
Socks5Response[Socks5Response["Granted"] = 0] = "Granted";
Socks5Response[Socks5Response["Failure"] = 1] = "Failure";
Socks5Response[Socks5Response["NotAllowed"] = 2] = "NotAllowed";
Socks5Response[Socks5Response["NetworkUnreachable"] = 3] = "NetworkUnreachable";
Socks5Response[Socks5Response["HostUnreachable"] = 4] = "HostUnreachable";
Socks5Response[Socks5Response["ConnectionRefused"] = 5] = "ConnectionRefused";
Socks5Response[Socks5Response["TTLExpired"] = 6] = "TTLExpired";
Socks5Response[Socks5Response["CommandNotSupported"] = 7] = "CommandNotSupported";
Socks5Response[Socks5Response["AddressNotSupported"] = 8] = "AddressNotSupported";
})(Socks5Response || (Socks5Response = {}));
exports.Socks5Response = Socks5Response;
var Socks5HostType;
(function (Socks5HostType) {
Socks5HostType[Socks5HostType["IPv4"] = 1] = "IPv4";
Socks5HostType[Socks5HostType["Hostname"] = 3] = "Hostname";
Socks5HostType[Socks5HostType["IPv6"] = 4] = "IPv6";
})(Socks5HostType || (Socks5HostType = {}));
exports.Socks5HostType = Socks5HostType;
var SocksClientState;
(function (SocksClientState) {
SocksClientState[SocksClientState["Created"] = 0] = "Created";
SocksClientState[SocksClientState["Connecting"] = 1] = "Connecting";
SocksClientState[SocksClientState["Connected"] = 2] = "Connected";
SocksClientState[SocksClientState["SentInitialHandshake"] = 3] = "SentInitialHandshake";
SocksClientState[SocksClientState["ReceivedInitialHandshakeResponse"] = 4] = "ReceivedInitialHandshakeResponse";
SocksClientState[SocksClientState["SentAuthentication"] = 5] = "SentAuthentication";
SocksClientState[SocksClientState["ReceivedAuthenticationResponse"] = 6] = "ReceivedAuthenticationResponse";
SocksClientState[SocksClientState["SentFinalHandshake"] = 7] = "SentFinalHandshake";
SocksClientState[SocksClientState["ReceivedFinalResponse"] = 8] = "ReceivedFinalResponse";
SocksClientState[SocksClientState["BoundWaitingForConnection"] = 9] = "BoundWaitingForConnection";
SocksClientState[SocksClientState["Established"] = 10] = "Established";
SocksClientState[SocksClientState["Disconnected"] = 11] = "Disconnected";
SocksClientState[SocksClientState["Error"] = 99] = "Error";
})(SocksClientState || (SocksClientState = {}));
exports.SocksClientState = SocksClientState;

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.validateSocksClientChainOptions = exports.validateSocksClientOptions = void 0;
const util_1 = require("./util");
const constants_1 = require("./constants");
const stream = require("stream");
/**
* Validates the provided SocksClientOptions
* @param options { SocksClientOptions }
* @param acceptedCommands { string[] } A list of accepted SocksProxy commands.
*/
function validateSocksClientOptions(options, acceptedCommands = ['connect', 'bind', 'associate']) {
// Check SOCKs command option.
if (!constants_1.SocksCommand[options.command]) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksCommand, options);
}
// Check SocksCommand for acceptable command.
if (acceptedCommands.indexOf(options.command) === -1) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksCommandForOperation, options);
}
// Check destination
if (!isValidSocksRemoteHost(options.destination)) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsDestination, options);
}
// Check SOCKS proxy to use
if (!isValidSocksProxy(options.proxy)) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsProxy, options);
}
// Validate custom auth (if set)
validateCustomProxyAuth(options.proxy, options);
// Check timeout
if (options.timeout && !isValidTimeoutValue(options.timeout)) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsTimeout, options);
}
// Check existing_socket (if provided)
if (options.existing_socket &&
!(options.existing_socket instanceof stream.Duplex)) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsExistingSocket, options);
}
}
exports.validateSocksClientOptions = validateSocksClientOptions;
/**
* Validates the SocksClientChainOptions
* @param options { SocksClientChainOptions }
*/
function validateSocksClientChainOptions(options) {
// Only connect is supported when chaining.
if (options.command !== 'connect') {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksCommandChain, options);
}
// Check destination
if (!isValidSocksRemoteHost(options.destination)) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsDestination, options);
}
// Validate proxies (length)
if (!(options.proxies &&
Array.isArray(options.proxies) &&
options.proxies.length >= 2)) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsProxiesLength, options);
}
// Validate proxies
options.proxies.forEach((proxy) => {
if (!isValidSocksProxy(proxy)) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsProxy, options);
}
// Validate custom auth (if set)
validateCustomProxyAuth(proxy, options);
});
// Check timeout
if (options.timeout && !isValidTimeoutValue(options.timeout)) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsTimeout, options);
}
}
exports.validateSocksClientChainOptions = validateSocksClientChainOptions;
function validateCustomProxyAuth(proxy, options) {
if (proxy.custom_auth_method !== undefined) {
// Invalid auth method range
if (proxy.custom_auth_method < constants_1.SOCKS5_CUSTOM_AUTH_START ||
proxy.custom_auth_method > constants_1.SOCKS5_CUSTOM_AUTH_END) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsCustomAuthRange, options);
}
// Missing custom_auth_request_handler
if (proxy.custom_auth_request_handler === undefined ||
typeof proxy.custom_auth_request_handler !== 'function') {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsCustomAuthOptions, options);
}
// Missing custom_auth_response_size
if (proxy.custom_auth_response_size === undefined) {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsCustomAuthOptions, options);
}
// Missing/invalid custom_auth_response_handler
if (proxy.custom_auth_response_handler === undefined ||
typeof proxy.custom_auth_response_handler !== 'function') {
throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsCustomAuthOptions, options);
}
}
}
/**
* Validates a SocksRemoteHost
* @param remoteHost { SocksRemoteHost }
*/
function isValidSocksRemoteHost(remoteHost) {
return (remoteHost &&
typeof remoteHost.host === 'string' &&
typeof remoteHost.port === 'number' &&
remoteHost.port >= 0 &&
remoteHost.port <= 65535);
}
/**
* Validates a SocksProxy
* @param proxy { SocksProxy }
*/
function isValidSocksProxy(proxy) {
return (proxy &&
(typeof proxy.host === 'string' || typeof proxy.ipaddress === 'string') &&
typeof proxy.port === 'number' &&
proxy.port >= 0 &&
proxy.port <= 65535 &&
(proxy.type === 4 || proxy.type === 5));
}
/**
* Validates a timeout value.
* @param value { Number }
*/
function isValidTimeoutValue(value) {
return typeof value === 'number' && value > 0;
}

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ReceiveBuffer = void 0;
class ReceiveBuffer {
constructor(size = 4096) {
this.buffer = Buffer.allocUnsafe(size);
this.offset = 0;
this.originalSize = size;
}
get length() {
return this.offset;
}
append(data) {
if (!Buffer.isBuffer(data)) {
throw new Error('Attempted to append a non-buffer instance to ReceiveBuffer.');
}
if (this.offset + data.length >= this.buffer.length) {
const tmp = this.buffer;
this.buffer = Buffer.allocUnsafe(Math.max(this.buffer.length + this.originalSize, this.buffer.length + data.length));
tmp.copy(this.buffer);
}
data.copy(this.buffer, this.offset);
return (this.offset += data.length);
}
peek(length) {
if (length > this.offset) {
throw new Error('Attempted to read beyond the bounds of the managed internal data.');
}
return this.buffer.slice(0, length);
}
get(length) {
if (length > this.offset) {
throw new Error('Attempted to read beyond the bounds of the managed internal data.');
}
const value = Buffer.allocUnsafe(length);
this.buffer.slice(0, length).copy(value);
this.buffer.copyWithin(0, length, length + this.offset - length);
this.offset -= length;
return value;
}
}
exports.ReceiveBuffer = ReceiveBuffer;

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.shuffleArray = exports.SocksClientError = void 0;
/**
* Error wrapper for SocksClient
*/
class SocksClientError extends Error {
constructor(message, options) {
super(message);
this.options = options;
}
}
exports.SocksClientError = SocksClientError;
/**
* Shuffles a given array.
* @param array The array to shuffle.
*/
function shuffleArray(array) {
for (let i = array.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[array[i], array[j]] = [array[j], array[i]];
}
}
exports.shuffleArray = shuffleArray;