larvit/smpp-js
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This commit is contained in:
Lilleman auf Larv
2015-04-05 17:56:27 +02:00
parent 720276325c
commit ff650a5042
2 changed files with 253 additions and 51 deletions
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larvitsmpp.js
+232 -50
View File
@@ -56,6 +56,11 @@ function pduToObj(pdu, callback) {
tlvCmdId,
paramSize;
// Returns true if this PDU is a response to another PDU
retObj.isResponse = function() {
return ! ! (this.cmdId & 0x80000000);
};
log.silly('larvitsmpp: pduToObj() - Decoding PDU to Obj. PDU buff in hex: ' + pdu.toString('hex'));
if (pdu.length < 16) {
@@ -274,6 +279,8 @@ function pduReturn(pdu, status, callback) {
param;
if (Buffer.isBuffer(pdu)) {
log.silly('larvitsmpp: pduReturn() - ran with pdu as buffer, run pduToObj() and retry');
pduToObj(pdu, function(err, pduObj) {
if (err) {
callback(err);
@@ -285,6 +292,8 @@ function pduReturn(pdu, status, callback) {
return;
}
log.silly('larvitsmpp: pduReturn() - ran');
// If status is a function, it is the callback.
// Default to OK status and sett callback correctly
if (typeof status === 'function') {
@@ -339,62 +348,234 @@ function pduReturn(pdu, status, callback) {
function session(sock, options, callback) {
var sessionEmitter = new events.EventEmitter(),
loggedIn = false,
enquireLinkTimer; // A timer used for keep alive of the session
ourSeqNr = 1, // Sequence number used for commands initiated from us
enqLinkTimer; // A timer used for keep alive of the session
log.verbose('larvitsmpp: session() - New session started from ' + sock.remoteAddress + ':' + sock.remotePort);
log.silly('larvitsmpp: session() - New session started from ' + sock.remoteAddress + ':' + sock.remotePort);
// Make the socket transparent via the returned emitter
sessionEmitter.sock = sock;
// Add a 'data' event handler to this instance of socket
sock.on('data', function(pdu) {
var data,
respPdu;
/**
* Increase our sequence number
*/
function incOurSeqNr() {
ourSeqNr ++;
pduToObj(pdu, function(err, data) {
// If we pass the maximum, start over at 1
if (ourSeqNr > 2147483646) {
ourSeqNr = 1;
}
}
/**
* Close the socket
* Always use this function to close the socket so we get it on log
*/
function closeSocket() {
log.verbose('larvitsmpp: session() - closeSocket() - Closing socket for ' + sock.remoteAddress + ':' + sock.remotePort);
if (enqLinkTimer) {
clearTimeout(enqLinkTimer);
}
sock.destroy();
}
/**
* Send PDU to socket
*
* @param buf pdu - can also take PDU object
* @param bol closeAfterSend - if true will close the socket after sending
*/
function send(pdu, closeAfterSend) {
if ( ! Buffer.isBuffer(pdu)) {
objToPdu(pdu, function(err, buffer) {
if (err) {
log.warn('larvitsmpp: session() - send() - Could not convert PDU to buffer');
closeSocket();
return;
}
send(buffer);
});
return;
}
log.verbose('larvitsmpp: session() - send() - sending PDU. SeqNr: ' + pdu.readUInt32BE(12) + ' cmd: ' + defs.cmdsById[pdu.readUInt32BE(4)].command + ' cmdStatus: ' + defs.errorsById[parseInt(pdu.readUInt32BE(8))] + ' hex: ' + pdu.toString('hex'));
sock.write(pdu);
if (closeAfterSend) {
closeSocket();
}
}
/**
* Send a return to given PDU
*
* @param obj or buf pdu
* @param str status - see list at defs.errors - defaults to 'ESME_ROK' - no error
* @param bol closeAfterSend - if true will close the socket after sending (OPTIONAL)
* @param func callback(err)
*/
function sendReturn(pdu, status, closeAfterSend, callback) {
if (typeof closeAfterSend === 'function') {
callback = closeAfterSend;
closeAfterSend = undefined;
}
pduReturn(pdu, status, function(err, retPdu) {
if (err) {
log.error('larvitsmpp: session() - Could not create return PDU: ' + err.message);
closeSocket();
if (typeof callback === 'function') {
callback(err);
}
return;
}
send(retPdu, closeAfterSend);
if (typeof callback === 'function') {
callback();
}
});
}
/**
* Try to log a connecting peer in
*
* @param obj pduObj
*/
function login(pduObj) {
log.debug('larvitsmpp: session() - sock.on(data) - Data received and session is not loggedIn');
// Pause socket so we do not receive any other commands until we have processed the login
sock.pause();
// Only bind_* is accepted when the client is not logged in
if (pduObj.cmdName !== 'bind_transceiver' && pduObj.cmdName !== 'bind_receiver' && pduObj.cmdName !== 'bind_transmitter') {
log.debug('larvitsmpp: session() - sock.on(data) - Session is not loggedIn and no bind_* command is given. Return error "ESME_RINVBNDSTS');
pduReturn(pduObj, 'ESME_RINVBNDSTS', function(err, retPdu) {
if (err) {
closeSocket();
return;
}
sock.resume();
send(retPdu);
});
return;
}
// If there is a checkuserpass(), use it to check system_id and password from the PDU
if (typeof options.checkuserpass === 'function') {
options.checkuserpass(pduObj.params.system_id, pduObj.params.password, function(err, res) {
if (err) {
closeSocket();
return;
}
if ( ! res) {
log.info('larvitsmpp: session() - login() - Login failed! Connected host: ' + sock.remoteAddress + ':' + sock.remotePort + ' system_id: "' + pduObj.params.system_id + '"');
sock.resume();
sendReturn(pduObj, 'ESME_RBINDFAIL');
return;
}
log.verbose('larvitsmpp: session() - login() - Login successful! Connected host: ' + sock.remoteAddress + ':' + sock.remotePort + ' system_id: "' + pduObj.params.system_id + '"');
loggedIn = true;
sock.resume();
sendReturn(pduObj);
});
return;
}
// If we arrived here it means we are not logged in and that a bind_* event happened and no checkuserpass() method exists. Lets login!
loggedIn = true;
sock.resume();
sendReturn(pduObj);
}
function handleResponse(pduObj) {
console.log(pduObj);
console.log('HANDLE IT motha fukkah!');
}
function deliverSm(pduObj) {
console.log(pduObj);
sendReturn(pduObj);
}
function submitSm(pduObj) {
sessionEmitter.emit('sms', {
'from': pduObj.params.source_addr,
'to': pduObj.params.destination_addr,
'message': pduObj.params.short_message,
'dlrRequested': Boolean(pduObj.params.registered_delivery),
'seqNr': pduObj.seqNr // Needed for DLR to be returned
});
sendReturn(pduObj);
}
/**
* Reset the enquire link timer
* If this is not ran within options.timeout milliseconds, this session will self terminate
*/
function resetEnqLinkTimer() {
log.silly('larvitsmpp: session() - resetEnqLinkTimer() - Resetting the kill timer');
if (enqLinkTimer) {
clearTimeout(enqLinkTimer);
}
enqLinkTimer = setTimeout(function() {
log.info('larvitsmpp: session() - resetEnqLinkTimer() - Closing session due to timeout');
closeSocket();
}, options.timeout);
}
resetEnqLinkTimer();
function enquireLink(pduObj) {
log.silly('larvitsmpp: session() - enquireLink() - Enquiring link');
resetEnqLinkTimer();
sendReturn(pduObj);
}
// Add a 'data' event handler to this instance of socket
sock.on('data', function(pduBuf) {
// Pass the data along to the sessionEmitter
sessionEmitter.emit('data', pduBuf);
log.silly('larvitsmpp: session() - sock.on(data) - Incoming PDU: ' + pduBuf.toString('hex'));
pduToObj(pduBuf, function(err, pduObj) {
if (err) {
log.warn('larvitsmpp: session() - Invalid PDU. ' + err.message);
pduReturn(data, 'ESME_RUNKNOWNERR', function(err, retPdu) {
if (err) {
log.error('larvitsmpp: session() - Could not create return PDU: ' + err.message);
sock.destroy();
return;
}
sock.write(retPdu);
sock.destroy();
return;
});
sock.destroy();
} else {
log.verbose('larvitsmpp: session() - sock.on(data) - Incoming PDU. Seqnr: ' + pduObj.seqNr + ' cmd: ' + pduObj.cmdName + ' cmdStatus: ' + pduObj.cmdStatus + ' hex: ' + pduBuf.toString('hex'));
if (loggedIn === false) {
// Only bind_* is accepted when the client is not logged in
if (data.cmdName !== 'bind_transceiver' && data.cmdName !== 'bind_receiver' && data.cmdName !== 'bind_transmitter') {
pduReturn(data, 'ESME_RINVBNDSTS', function(err, retPdu) {
});
sock.write(pduReturn(data, 'ESME_RINVBNDSTS'))
return;
}
// Pass the data along to the sessionEmitter
//sessionEmitter.emit('data', data);
console.log('Converted to obj:');
console.log(data);
console.log('DATA ' + sock.remoteAddress + ': ' + data);
// Write the data back to the socket, the client will receive it as data from the server
sock.write('You said "' + data + '"');
login(pduObj);
} else if (pduObj.isResponse()) {
handleResponse(pduObj);
} else if (pduObj.cmdName === 'deliver_sm') {
deliverSm(pduObj);
} else if (pduObj.cmdName === 'enquire_link') {
enquireLink(pduObj);
} else if (pduObj.cmdName === 'submit_sm') {
submitSm(pduObj);
} else if (pduObj.cmdName === 'unbind') {
sendReturn(pduObj, 'ESME_ROK', true);
} else {
// All other commands we do not support
sendReturn(pduObj, 'ESME_RINVCMDID');
}
}
});
});
@@ -402,11 +583,11 @@ function session(sock, options, callback) {
// Add a 'close' event handler to this instance of socket
sock.on('close', function() {
sessionEmitter.emit('close');
console.log('CLOSED: ' + sock.remoteAddress +' '+ sock.remotePort);
log.silly('larvitsmpp: session() - socket closed');
});
callback(null, sessionEmitter);
}/**/
}
/**
* Setup a server
@@ -423,7 +604,8 @@ function server(options, callback) {
// Set default options
options = merge({
'host': 'localhost',
'port': 2775
'port': 2775,
'timeout': 30000 // 30 sec
}, options || {});
// Create a server instance, and chain the listen function to it
@@ -431,13 +613,13 @@ function server(options, callback) {
// The sock object the callback function receives UNIQUE for each connection
net.createServer(function(sock) {
// We have a connection - a socket object is assigned to the connection automatically
log.verbose('larvitsmpp: server() - Incomming connection! remoteAddress: ' + sock.remoteAddress + ' remotePort: ' + sock.remotePort);
log.verbose('larvitsmpp: server() - Incomming connection! From: ' + sock.remoteAddress + ':' + sock.remotePort);
session(sock, options, callback);
}).listen(options.port, options.host);
log.info('larvitsmpp: server() - Up and running at ' + options.host + ':' + options.port);
}/**/
}
/**
* Setup a client
@@ -475,7 +657,7 @@ function client(options, callback) {
client.on('close', function() {
console.log('Connection closed');
});
}/**/
}
// Expose some functions
exports.server = server;
test/test.js
+20
View File
@@ -106,3 +106,23 @@ describe('PDU convertion', function() {
});
});
/*
describe('Sessions', function() {
it('should try to send submit_sm while not logged in and get a failure return PDU back', function(done) {
});
it('should send a bind_transceiver to a new session and get logged in', function(done) {
});
it('should send a bind_transceiver to a new session with a login-method and fail due to wrong username and password', function(done) {
});
it('should send a bind_transceiver to a new session with a login-method and succeed with correct username and password', function(done) {
});
});
*/