forked from sidorares/dbus-native
/
index.js
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index.js
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// dbus.freedesktop.org/doc/dbus-specification.html
const EventEmitter = require('events').EventEmitter;
const constants = require('./lib/constants');
const message = require('./lib/message');
const clientHandshake = require('./lib/handshake/client-handshake');
const serverHandshake = require('./lib/handshake/server-handshake');
const MessageBus = require('./lib/bus');
const server = require('./lib/server');
const createStream = require('./lib/create-stream');
function createConnection(opts) {
var self = new EventEmitter();
if (!opts) opts = {};
var stream = (self.stream = createStream(opts));
if (stream.setNoDelay) stream.setNoDelay();
stream.on('error', function(err) {
// forward network and stream errors
self.emit('error', err);
});
stream.on('end', function() {
self.emit('end');
self.message = function() {
throw new Error("Can't write a message to a closed stream");
};
});
self.end = function() {
stream.end();
return self;
};
var handshake = opts.server ? serverHandshake : clientHandshake;
handshake(stream, opts, function(error, guid) {
if (error) {
return self.emit('error', error);
}
self.guid = guid;
self.emit('connect');
message.unmarshalMessages(
stream,
function(message) {
self.emit('message', message);
},
opts
);
});
self._messages = [];
// pre-connect version, buffers all messages. replaced after connect
self.message = function(msg) {
self._messages.push(msg);
};
self.once('connect', function() {
self.state = 'connected';
for (var i = 0; i < self._messages.length; ++i) {
stream.write(message.marshall(self._messages[i]));
}
self._messages.length = 0;
// no need to buffer once connected
self.message = function(msg) {
stream.write(message.marshall(msg));
};
});
return self;
}
module.exports.createClient = function(params) {
var connection = createConnection(params || {});
return new MessageBus(connection, params || {});
};
module.exports.systemBus = function() {
return module.exports.createClient({
busAddress:
process.env.DBUS_SYSTEM_BUS_ADDRESS ||
'unix:path=/var/run/dbus/system_bus_socket'
});
};
module.exports.sessionBus = function(opts) {
return module.exports.createClient(opts);
};
module.exports.messageType = constants.messageType;
module.exports.createConnection = createConnection;
module.exports.createServer = server.createServer;