Some updates

README.md

@@ -117,27 +117,11 @@ Example code below:
     		});
 
     		// Oh, the sms sender wants a dlr (delivery report), send it!
-    		if (sms.dlr === true) {
+    		if (sms.dlrRequested === true) {
-    			serverSession.sendDlr({
+    			serverSession.sendDlr(sms);
-    				'smsId': 450,
-    				'status': 2
 
-    				/*
+    			// To send a negative delivery report do:
-    				 * All available dlr status codes:
+    			//serverSession.sendDlr(sms, false);
-    				 *
-    				 * 0	SCHEDULED	The message is scheduled for later sending.
-    				 * 1	ENROUTE	The message is enroute.
-    				 * 2	DELIVERED	The message was successfully delivered.
-    				 * 3	EXPIRED	The SMSC was unable to deliver the message in a specified amount of time.For instance when the phone was turned off.
-    				 * 4	DELETED	The message was deleted.
-    				 * 5	UNDELIVERABLE	The SMS was unable to deliver the message.For instance, when the number does not exist.
-    				 * 6	ACCEPTED	The SMS was accepted and will be send.
-    				 * 7	UNKNOWN	Unknown error occured.
-    				 * 8	REJECTED	The message was rejected.The provider could have blocked phonenumbers in this range.
-    				 * 9	SKIPPED	The message was skipped.
-    				 */
-
-    			});
     		}
     	});
     });

lib/session.js

@@ -94,11 +94,6 @@ function session(sock) {
 		var pduObj = pdu,
 		    err    = null;
 
-		// Make sure the sequence number is set and is correct
-		if ( ! Buffer.isBuffer(pdu)) {
-			pdu.seqNr = returnObj.ourSeqNr;
-		}
-
 		// Make sure the pdu is an object
 		if (Buffer.isBuffer(pdu)) {
 			smppUtils.pduToObj(pdu, function(err, pduObj) {
@@ -112,7 +107,10 @@ function session(sock) {
 			return;
 		}
 
-		log.debug('larvitsmpp: lib/session.js: session() - returnObj.send() - Sending PDU to remote. cmdName: ' + pdu.cmdName + ' seqNr: ' + pdu.seqNr);
+		// Make sure the sequence number is set and is correct
+		pduObj.seqNr = returnObj.ourSeqNr;
+
+		log.debug('larvitsmpp: lib/session.js: session() - returnObj.send() - Sending PDU to remote. cmdName: ' + pduObj.cmdName + ' seqNr: ' + pduObj.seqNr);
 
 		// If closeAndSend is omitted, put callback in its place
 		if (typeof closeAfterSend === 'function') {
@@ -209,7 +207,7 @@ function session(sock) {
 	 *                       from - alphanum or international format
 	 *                       to - international format
 	 *                       message - string
-	 *                       dlr - boolean defaults to false
+	 *                       dlrRequested - boolean defaults to false
 	 * @param func callback(err, smsId, retPduObj)
 	 */
 	returnObj.sendSms = function(smsOptions, callback) {
@@ -223,7 +221,7 @@ function session(sock) {
 		};
 
 		// Request DLRs!
-		if (smsOptions.dlr) {
+		if (smsOptions.dlrRequested) {
 			pduObj.params.registered_delivery = 0x01;
 		}
 
@@ -234,6 +232,99 @@ function session(sock) {
 		});
 	};
 
+	/**
+	 * Send a DLR
+	 *
+	 * @param obj sms - sms object
+	 * @param bol status - defaults to true
+	 * @param func callback(err)
+	 */
+	returnObj.sendDlr = function(sms, status, callback) {
+		var shortMessage = 'id:' + sms.smsId + ' sub:001 ',
+		    err,
+		    dlrPduObj;
+
+		if (typeof status === 'function') {
+			callback = status;
+			status   = true;
+		}
+
+		if (status === undefined) {
+			status = true;
+		}
+
+		if (status) {
+			shortMessage += 'dlvrd:1 ';
+		} else {
+			shortMessage += 'dlvrd:0 ';
+		}
+
+		shortMessage += 'submit date:' + smppUtils.smppDate(sms.submitTime);
+		shortMessage += ' done date:' + smppUtils.smppDate(new Date());
+
+		if (status) {
+			shortMessage += ' stat:DELIVRD err:0 text:xxx';
+		} else {
+			shortMessage += ' stat:UNDELIVERABLE err:1 text:xxx';
+		}
+
+		dlrPduObj = {
+			'cmdName': 'deliver_sm',
+			'params': {
+				'source_addr': sms.from,
+				'destination_addr': sms.to,
+				'esm_class': 4,
+				'short_message': shortMessage
+			},
+			'tlvs': {
+				'receipted_message_id': {
+					'tagId': 0x001E,
+					'tagName': 'receipted_message_id',
+					'tagValue': sms.smsId
+				},
+				'message_state': {
+					'tagId': 0x0427,
+					'tagName': 'message_state',
+					'tagValue': 2
+				}
+			}
+		};
+
+		if ( ! status) {
+			dlrPduObj.tlvs.message_state.tagValue = 5;
+		}
+
+		dlrPduObj.seqNr = 323;
+
+		console.log('before:');
+		console.log(dlrPduObj);
+
+		smppUtils.objToPdu(dlrPduObj, function(err, pdu) {
+			if (err) {
+				throw err;
+			}
+
+			smppUtils.pduToObj(pdu, function(err, newObj) {
+				if (err) {
+					throw err;
+				}
+
+				console.log('newObj:');
+				console.log(newObj);
+			});
+		});
+
+		return;
+		returnObj.send(dlrPduObj, function(err, retPduObj) {
+			console.log('WHATTA WHATTA');
+			console.log(retPduObj);
+
+			/*if (typeof callback === 'function') {
+				callback(err, retPduObj.params.message_id, retPduObj);
+			}*/
+		});
+	};
+
 	// Handle incoming deliver_sm
 	returnObj.deliverSm = function(pduObj) {
 		var dlrObj;
@@ -279,6 +370,7 @@ function session(sock) {
 		smsObj = {
 			'from':         pduObj.params.source_addr,
 			'to':           pduObj.params.destination_addr,
+			'submitTime':   new Date(),
 			'message':      pduObj.params.short_message,
 			'dlrRequested': Boolean(pduObj.params.registered_delivery)
 		};

lib/utils.js

@@ -48,7 +48,14 @@ function calcCmdLength(obj, callback) {
 			tlvDef = defs.tlvs.default;
 		}
 
+		try {
 			cmdLength += tlvDef.type.size(tlvValue) + 4;
+		} catch(e) {
+			err = new Error('Could not get size of TLV parameter "' + tlvName + '" with value "' + tlvValue + '"');
+			log.error('larvitsmpp: lib/utils.js: calcCmdLength() - ' + err.message);
+			callback(err);
+			return;
+		}
 	}
 
 	callback(null, cmdLength);
@@ -192,8 +199,8 @@ function pduToObj(pdu, callback) {
 	log.silly('larvitsmpp: lib/utils.js: pduToObj() - Decoding PDU to Obj. PDU buff in hex: ' + pdu.toString('hex'));
 
 	if (pdu.length < 16) {
-		err = new Error('larvitsmpp: lib/utils.js: pduToObj() - PDU is to small, minimum size is 16, given size is ' + pdu.length);
+		err = new Error('PDU is to small, minimum size is 16, given size is ' + pdu.length);
-		log.warn(err.message);
+		log.warn('larvitsmpp: lib/utils.js: pduToObj() - ' + err.message);
 
 		callback(err);
 		return;
@@ -207,18 +214,18 @@ function pduToObj(pdu, callback) {
 
 	// Lookup the command id in the definitions
 	if (defs.cmdsById[retObj.cmdId] === undefined) {
-		err = new Error('larvitsmpp: lib/utils.js: pduToObj() - Unknown PDU command id: ' + retObj.cmdId);
+		err = new Error('Unknown PDU command id: ' + retObj.cmdId);
 	}
 
 	if (isNaN(retObj.seqNr)) {
-		err = new Error('larvitsmpp: lib/utils.js: pduToObj() - Invalid seqNr, is not an interger: "' + retObj.seqNr + '"');
+		err = new Error('Invalid seqNr, is not an interger: "' + retObj.seqNr + '"');
 	} else if (retObj.seqNr > 2147483646) {
-		err = new Error('larvitsmpp: lib/utils.js: pduToObj() - Invalid seqNr, maximum size of 2147483646 (0x7fffffff) exceeded.');
+		err = new Error('Invalid seqNr, maximum size of 2147483646 (0x7fffffff) exceeded.');
 	}
 
 	// If error is found, do not proceed with execution
 	if (err !== null) {
-		log.warn(err.message);
+		log.warn('larvitsmpp: lib/utils.js: pduToObj() - ' + err.message);
 		callback(err);
 		return;
 	}
@@ -251,7 +258,8 @@ function pduToObj(pdu, callback) {
 			// Increase the offset by the current params length
 			offset += paramSize;
 		} catch (e) {
-			err = new Error('larvitsmpp: lib/utils.js: pduToObj() - Failed to read param "' + param + '": ' + e.message);
+			err = new Error('Failed to read param "' + param + '": ' + e.message);
+			log.error('larvitsmpp: lib/utils.js: pduToObj() - ' + err.message);
 			callback(err);
 
 			return;
@@ -260,8 +268,14 @@ function pduToObj(pdu, callback) {
 
 	// If the length is greater than the current offset, there must be TLVs - resolve them!
 	while (offset < retObj.cmdLength) {
+		try {
 			tlvCmdId  = pdu.readInt16BE(offset);
 			tlvLength = pdu.readInt16BE(offset + 2);
+		} catch (e) {
+			err = new Error('Unable to read TLV at offset "' + offset + '", given cmdLength: "' + retObj.cmdLength + '" pdu: ' + pdu.toString('hex'));
+			log.error('larvitsmpp: lib/utils.js: pduToObj() - ' + err.message);
+			callback(err);
+		}
 
 		if (defs.tlvsById[tlvCmdId] === undefined) {
 			tlvValue = pdu.slice(offset + 4, offset + 4 + tlvLength).toString('hex');
@@ -475,9 +489,48 @@ function pduReturn(pdu, status, params, tlvs, callback) {
 	});
 }
 
+/**
+ * Format a js date object as ugly SMPP date format
+ *
+ * @param obj jsDateObj
+ * @return str
+ */
+function smppDate(jsDateObj) {
+	var uglyStr = '';
+
+	uglyStr += jsDateObj.getFullYear().toString().substring(2);
+
+	if (jsDateObj.getMonth() < 10) {
+		uglyStr += '0';
+	}
+
+	uglyStr += jsDateObj.getMonth();
+
+	if (jsDateObj.getDate() < 10) {
+		uglyStr += '0';
+	}
+
+	uglyStr += jsDateObj.getDate();
+
+	if (jsDateObj.getHours() < 10) {
+		uglyStr += '0';
+	}
+
+	uglyStr += jsDateObj.getHours();
+
+	if (jsDateObj.getMinutes() < 10) {
+		uglyStr += '0';
+	}
+
+	uglyStr += jsDateObj.getMinutes();
+
+	return uglyStr;
+}
+
 // Expose some functions
 exports.decodeMsg = decodeMsg;
 exports.encodeMsg = encodeMsg;
 exports.pduToObj  = pduToObj;
 exports.objToPdu  = objToPdu;
 exports.pduReturn = pduReturn;
+exports.smppDate  = smppDate;