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tests/node_modules/wireless-tools/udhcpc.js

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+/*
+ * Copyright (c) 2015 Christopher M. Baker
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+var child_process = require('child_process');
+
+/**
+ * The **udhcpc** command is used to configure a dhcp client for a
+ * network interface.
+ *
+ * @static
+ * @category udhcpc
+ *
+ */
+var udhcpc = module.exports = {
+  exec: child_process.exec,
+  disable: disable,
+  enable: enable
+};
+
+/**
+ * The **udhcpc disable** command is used to stop a dhcp client on a
+ * specific network interface.
+ *
+ * @static
+ * @category udhcpc
+ * @param {string} interface The network interface.
+ * @param {function} callback The callback function.
+ * @returns {process} The child process.
+ * @example
+ *
+ * var udhcpc = require('wireless-tools/udhcpc');
+ *
+ * udhcpc.disable('wlan0', function(err) {
+ *   // the dhcp client was stopped
+ * });
+ *
+ */
+function disable(interface, callback) {
+  var command = 'kill `pgrep -f "^udhcpc -i ' + interface + '"` || true';
+  return this.exec(command, callback);
+}
+
+/**
+ * The **udhcpc enable** command is used to start a dhcp client on a
+ * specific network interface.
+ *
+ * @static
+ * @category udhcpc
+ * @param {object} options The dhcp client configuration.
+ * @param {function} callback The callback function.
+ * @returns {process} The child process.
+ * @example
+ *
+ * var udhcpc = require('wireless-tools/udhcpc');
+ *
+ * var options = {
+ *   interface: 'wlan0'
+ * };
+ *
+ * udhcpc.enable(options, function(err) {
+ *   // the dhcp client was started 
+ * });
+ *
+ */
+function enable(options, callback) {
+  var command = 'udhcpc -i ' + options.interface + ' -n';
+  return this.exec(command, callback);  
+}