Create Original code

Original code

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+extends Node
+
+###########################################################
+#
+# ExtraSimple SMTP client
+#
+# 1 - import in your project
+# 2 - put values in var server, user, password,
+#		mailto, mymail
+# 3 - call method Deliver(data) to send mail
+#
+###########################################################
+
+###########################################################
+#
+#
+# d: inner class for simple debug - begin
+#
+#
+###########################################################
+
+class d:
+	var debug = true
+	func display(data):
+		if debug == true:
+			prints ("debug:",data)
+
+###########################################################
+#
+#
+# d: inner class for simple debug - end
+#
+#
+###########################################################
+
+
+export var server = "smtp.xxx.com"
+export var port	= 25
+export var user = ""			# put userid for SMTP login
+export var password = ""	# put password for SMTP login
+export var mymailto = ""   # put destination address
+export var mymail = ""		# put mail associated to userid/password
+
+###########################################################
+#
+# signals
+#
+###########################################################
+
+signal SMTP_connecting
+signal SMTP_connected
+signal SMTP_working
+signal SMTP_disconnected_error
+signal SMTP_disconnected_ok
+
+###########################################################
+#
+# method used to connect
+#
+###########################################################
+
+enum channel {TCP,PACKET}
+export (channel) var com = PACKET
+
+###########################################################
+#
+# storage area
+#
+###########################################################
+
+var authloginbase64=""
+var authpassbase64=""
+
+var Socket = null
+var PacketSocket = null
+var PacketIn = ""
+var PacketOut = ""
+
+enum esi {OK,KO}    # i like that one!
+
+enum stati {OK,WAITING,NO_RESPONSE,UNHANDLED_REPONSE}
+export (stati) var stato
+
+var MaxRetries = 5
+var delayTime = 250
+
+var thread = null
+
+func _ready():
+	if user != "":		authloginbase64=Marshalls.raw_to_base64(user.to_ascii())
+	if password != "":	authpassbase64=Marshalls.raw_to_base64(password.to_ascii())
+
+
+func _process(delta):
+	pass
+
+func Deliver(data):
+	thread = Thread.new()
+	thread.start(self,"ThreadDeliver",data)
+
+func ThreadDeliver(data):
+	var r_code
+	emit_signal("SMTP_connecting")
+	r_code = OpenSocket()
+	if r_code == OK:
+		r_code =WaitAnswer()
+	if r_code == OK:
+		emit_signal("SMTP_connected")
+		r_code = send("ciao") # needed because some SMTP servers return error each first command
+	if r_code == OK:
+		r_code = MAILhello()
+	if r_code == OK:
+		emit_signal("SMTP_working")
+		r_code = MAILauth()
+	if r_code == OK:
+		r_code = MAILfrom(mymail)
+	if r_code == OK:
+		r_code = MAILto(mymailto)
+	if r_code == OK:
+		r_code = MAILdata(data,mymail,"comanda per sagra")
+	if r_code == OK:
+		d.display("process OK")
+	if r_code == OK:
+		r_code =MAILquit()
+	CloseSocket()
+	if r_code == OK:
+		emit_signal("SMTP_disconnected_ok")
+	else:
+		emit_signal("SMTP_disconnected_error")
+		d.display("ERROR")
+	return r_code
+
+
+func OpenSocket():
+	var error
+	if Socket == null:
+		Socket=StreamPeerTCP.new()
+	error=Socket.connect_to_host(server,port)
+	d.display(["connecting server...",server,error])
+	if error > 0:
+		var ip=IP.resolve_hostname(server)
+		error=Socket.connect_to_host(ip,port)
+		d.display(["trying IP ...",ip,error])
+
+	for i in range(1,MaxRetries):
+		if Socket.get_status() == Socket.STATUS_ERROR:
+			d.display("Error while requesting connection")
+			break
+		elif Socket.get_status() == Socket.STATUS_CONNECTING:
+			d.display("connecting...")
+			break
+		elif Socket.get_status() == Socket.STATUS_CONNECTED:
+			d.display("connection up")
+			break
+		else:
+			OS.delay_msec(delayTime)
+
+	if com == PACKET:
+		if PacketSocket == null:
+			PacketSocket=PacketPeerStream.new()
+			PacketSocket.set_stream_peer(Socket)
+
+	return error
+
+func CloseSocket():
+	Socket.disconnect_from_host()
+
+func send(data1,data2=null,data3=null):
+	var error
+	error = sendOnly(data1,data2,data3)
+	return error
+
+func sendOnly(data1,data2=null,data3=null):
+	var error = 0
+	PacketOut = data1
+	if data2 != null:
+		PacketOut = PacketOut + " " + data2
+	if data3 != null:
+		PacketOut = PacketOut + " " + data3
+	d.display(["send",PacketOut])
+	PacketOut = PacketOut + "\n"
+
+	if com == PACKET:
+		error=PacketSocket.put_packet(PacketOut.to_ascii())
+	elif com == TCP:
+		error=Socket.put_data(PacketOut.to_ascii())
+		if error == null:
+			error = "NULL"
+	d.display(["send","r_code",error])
+	return error
+
+func WaitAnswer(succesful=""):
+	stato=WAITING
+	d.display(["waiting response from server..."])
+	if com == PACKET:
+		OS.delay_msec(delayTime)
+		for i in range(1,MaxRetries):
+			d.display(["bytes buffered",String(PacketSocket.get_available_packet_count()),"error",String(Socket.get_packet_error())])
+			if PacketSocket.get_available_packet_count() > 0:
+				PacketIn=PacketSocket.get_var()
+				d.display(["receive",PacketIn])
+				stato=OK
+				break
+			else:
+				d.display(["waiting response from server...",i])
+				OS.delay_msec(delayTime)
+		if stato==WAITING:
+			stato = NO_RESPONSE
+		else:
+			if ParsePacketIn(succesful) != OK:
+				stato=UNHANDLED_REPONSE
+		return stato
+	elif com == TCP:
+		PacketIn = ""
+		OS.delay_msec(delayTime)
+		for i in range(1,MaxRetries):
+			var bufLen =Socket.get_available_bytes()
+			if bufLen > 0:
+				d.display(["bytes buffered",String(bufLen)])
+				PacketIn=PacketIn + Socket.get_utf8_string(bufLen)
+				d.display(["receive",PacketIn])
+				break
+			else:
+				OS.delay_msec(delayTime)
+		if PacketIn != "":
+			stato=OK
+			if ParsePacketIn(succesful) != OK:
+				stato=UNHANDLED_REPONSE
+		else:
+			stato = NO_RESPONSE
+		return stato
+	else:
+		return 99
+
+func ParsePacketIn(strcompare):
+	if strcompare == "":
+		return OK
+	if PacketIn.left(strcompare.length())==strcompare:
+		return OK
+	else:
+		return KO
+
+func MAILhello():
+	var r_code=send("HELO", mymail)
+	WaitAnswer()
+	r_code= send("EHLO", mymail)
+	r_code= WaitAnswer("250")
+	return r_code
+
+func MAILauth():
+	var r_code=send("AUTH LOGIN")
+	r_code=WaitAnswer("334")
+	if r_code == OK:
+		r_code=send(authloginbase64)
+	r_code = WaitAnswer("334")
+	if r_code == OK:
+		r_code=send(authpassbase64)
+	r_code = WaitAnswer("235")
+	d.display(["r_code auth:",r_code])
+	return r_code
+
+func MAILfrom(data):
+	var r_code=send("MAIL FROM:",bracket(data))
+	r_code = WaitAnswer("250")
+	return r_code
+
+func MAILto(data):
+	var r_code=send("RCPT TO:",bracket(data))
+	r_code = WaitAnswer("250")
+	return r_code
+
+func MAILdata(data=null,from=null,subject=null):
+	var corpo = ""
+	for i in data:
+		corpo = corpo + i + "\r\n"
+	corpo=corpo + "."
+	var r_code=send("DATA") #,bracket(data))
+	r_code=WaitAnswer("354")
+	if r_code == OK and from != null:
+		r_code=send("FROM: ",bracket(from))
+	if r_code == OK and subject != null:
+		r_code=send("SUBJECT: ",subject)
+	if r_code == OK and data != null:
+		r_code=send(corpo)
+	WaitAnswer("250")
+	return r_code
+
+func MAILquit():
+	return send("QUIT")
+
+func bracket(data):
+	return "<"+data+">"