<?
/*
File: smppclass.php
Implements: SMPPCLass()
*/
/*
The following are the SMPP PDU types that we are using in this class.
Apart from the following 3 PDU types, there are a lot of SMPP directives
that are not implemented in this version.
*/
define(CM_BIND_TRANSMITTER, 0x00000002);
define(CM_SUBMIT_SM, 0x00000004);
define(CM_UNBIND, 0x00000006);
class SMPPClass {
// public members:
/*
Constructor.
Parameters:
none.
Example:
$smpp = new SMPPClass();
*/
function SMPPClass()
{
$this->_socket = NULL;
$this->_command_status = 0;
$this->_sequence_number = 1;
$this->_source_address = "";
}
/*
For SMS gateways that support sender-ID branding, the method
can be used to set the originating address.
Parameters:
$from : Originating address
Example:
$smpp->SetSender("31495595392");
*/
function SetSender($from)
{
if (strlen($from) > 20) {
// todo
echo "Error: sender id too long.\n";
return;
}
$this->_source_address = $from;
}
/*
This method initiates an SMPP session.
It is to be called BEFORE using the Send() method.
Parameters:
$host : SMPP ip to connect to.
$port : port # to connect to.
$username : SMPP system ID
$password : SMPP passord.
$system_type : SMPP System type
Example:
$smpp->Start("smpp.chimit.nl", 2345, "chimit", "my_password", "client01");
*/
function Start($host, $port, $username, $password, $system_type)
{
$this->_socket = fsockopen($host, $port, $errno, $errstr);
// todo: sanity check on input parameters
if (!$this->_socket) {
echo "Error opening SMPP session.\n";
echo "Error was: $errstr.\n";
return;
}
socket_set_timeout($this->_socket, 1200);
$status = $this->SendBindTransmitter($username, $password, $system_type);
if ($status != 0) {
echo "Error binding to SMPP server. Invalid credentials?\n";
}
}
/*
This method sends out one SMS message.
Parameters:
$to : destination address.
$text : text of message to send.
Example:
$smpp->Send("31495595392", "This is an SMPP Test message.");
*/
function Send($to, $text)
{
if (strlen($to) > 20) {
echo "to-address too long.\n";
return;
}
if (strlen($text) > 160) {
echo "Message too long.\n";
return;
}
if (!$this->_socket) {
// not connected
return;
}
$service_type = "";
$source_addr_ton = 0;
$source_addr_npi = 0;
$source_addr = $this->_source_address;
$dest_addr_ton = 1;
$dest_addr_npi = 1;
$destination_addr = $to;
$esm_class = 0;
$protocol_id = 0;
$priority_flag = 0;
$schedule_delivery_time = "";
$validity_period = "";
$registered_delivery_flag = 0;
$replace_if_present_flag = 0;
$data_coding = 0;
$sm_default_msg_id = 0;
$sm_length = strlen($text);
$short_message = $text;
$status = $this->SendSubmitSM($service_type, $source_addr_ton, $source_addr_npi, $source_addr, $dest_addr_ton, $dest_addr_npi, $destination_addr, $esm_class, $protocol_id, $priority_flag, $schedule_delivery_time, $validity_period, $registered_delivery_flag, $replace_if_present_flag, $data_coding, $sm_default_msg_id, $sm_length, $short_message);
if ($status != 0) {
echo "SMPP server returned error $status.\n";
}
}
/*
This method ends a SMPP session.
Parameters:
none
Example: $smpp->End();
*/
function End()
{
if (!$this->_socket) {
// not connected
return;
}
$status = $this->SendUnbind();
if ($status != 0) {
echo "SMPP Server returned error $status.\n";
}
fclose($this->_socket);
$this->_socket = NULL;
}
// private members (not documented):
function ExpectPDU($our_sequence_number)
{
do {
$elength = fread($this->_socket, 4);
extract(unpack("Nlength", $elength));
$stream = fread($this->_socket, $length - 4);
/* echo "Read PDU : $length bytes.\n";
echo "Stream len : " . strlen($stream) . "\n"; */
extract(unpack("Ncommand_id/Ncommand_status/Nsequence_number", $stream));
$command_id &= 0x0fffffff;
/* echo "Command id : $command_id.\n";
echo "Command status : $command_status.\n";
echo "sequence_number : $sequence_number.\n";
*/
switch ($command_id) {
case CM_BIND_TRANSMITTER:
// echo "Got CM_BIND_TRANSMITTER_RESP.\n";
break;
case CM_UNBIND:
// echo "Got CM_UNBIND_RESP.\n";
break;
case CM_SUBMIT_SM:
// echo "Got CM_SUBMIT_SM_RESP.\n";
break;
default:
// echo "Got unknown SMPP pdu.\n";
break;
}
} while ($sequence_number != $our_sequence_number);
return $command_status;
}
function SendPDU($command_id, $pdu)
{
$length = strlen($pdu) + 16;
$header = pack("NNNN", $length, $command_id, $this->_command_status, $this->_sequence_number);
/* echo "Sending PDU, len == $length\n";
echo "Sending PDU, header-len == " . strlen($header) . "\n";
echo "Sending PDU, command_id == " . $command_id . "\n";
*/
fwrite($this->_socket, $header . $pdu, $length);
$status = $this->ExpectPDU($this->_sequence_number);
$this->_sequence_number = $this->_sequence_number + 1;
return $status;
}
function SendBindTransmitter($system_id, $smpppassword, $system_type)
{
$system_id_len = strlen($system_id) + 1;
$smpppassword_len = strlen($smpppassword) + 1;
$system_type_len = strlen($system_type) + 1;
$pdu = pack("a{$system_id_len}a{$smpppassword_len}a{$system_type_len}CCCa1", $system_id, $smpppassword, $system_type, 3, 0, 0, "");
$status = $this->SendPDU(CM_BIND_TRANSMITTER, $pdu);
return $status;
}
function SendUnbind()
{
$pdu = "";
$status = $this->SendPDU(CM_UNBIND, $pdu);
return status;
}
function SendSubmitSM($service_type, $source_addr_ton, $source_addr_npi, $source_addr, $dest_addr_ton, $dest_addr_npi, $destination_addr, $esm_class, $protocol_id, $priority_flag, $schedule_delivery_time, $validity_period, $registered_delivery_flag, $replace_if_present_flag, $data_coding, $sm_default_msg_id, $sm_length, $short_message)
{
$service_type_len = strlen($service_type) + 1;
$source_addr_len = strlen($source_addr) + 1;
$destination_addr_len = strlen($destination_addr) + 1;
$schedule_delivery_time_len = strlen($schedule_delivery_time) + 1;
$validity_period_len = strlen($validity_period) + 1;
$message_len = $sm_length + 1;
// echo "PDU spec: a{$service_type_len}cca{$source_addr_len}cca{$destination_addr_len}ccca{$schedule_delivery_time_len}a{$validity_period_len}ccccca{$message_len}\n";
$pdu = pack("a{$service_type_len}cca{$source_addr_len}cca{$destination_addr_len}ccca{$schedule_delivery_time_len}a{$validity_period_len}ccccca{$message_len}", $service_type, $source_addr_ton, $source_addr_npi, $source_addr, $dest_addr_ton, $dest_addr_npi, $destination_addr, $esm_class, $protocol_id, $priority_flag, $schedule_delivery_time, $validity_period, $registered_delivery_flag, $replace_if_present_flag, $data_coding, $sm_default_msg_id, $sm_length, $short_message);
$status = $this->SendPDU(CM_SUBMIT_SM, $pdu);
return $status;
}
};
?>