* first action! (#1)

node_modules/socks/build/common/helpers.js

@@ -0,0 +1,100 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+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);
+    }
+    // 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);
+        }
+    });
+    // Check timeout
+    if (options.timeout && !isValidTimeoutValue(options.timeout)) {
+        throw new util_1.SocksClientError(constants_1.ERRORS.InvalidSocksClientOptionsTimeout, options);
+    }
+}
+exports.validateSocksClientChainOptions = validateSocksClientChainOptions;
+/**
+ * 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;
+}
+//# sourceMappingURL=helpers.js.map