<?php

class MultiotpSms
/**
 * @class     MultiotpSms
 * @brief     SMS message using any SMS Provider.
 *
 * @author    Andre Liechti, SysCo systemes de communication sa, <info@multiotp.net>
 * @version   5.9.9.3
 * @date      2025-02-18
 * @since     2018-10-09
 *
 * Predefined providers:
 *       afilnet: Afilnet (HTTPS), https://www.afilnet.com/
 *        aspsms: aspsms.com (XML), https://www.aspsms.com/
 *    clickatell: Clickatell (legacy XML), https://archive.clickatell.com/developers/2015/10/08/xml/
 *   clickatell2: Clickatell (HTTPS), https://www.clickatell.com/
 *         ecall: eCall.ch (HTTPS), https://www.ecall.ch/
 *    intellisms: IntelliSMS.co.uk (HTTPS), https://www.intellisms.co.uk/
 *         nexmo: Nexmo (HTTPS), https://www.nexmo.com/
 *        nowsms: NowSMS.com (on-premises), https://www.nowsms.com/
 *      smseagle: SMSEagle (hardware gateway), https://www.smseagle.eu/
 *    smsgateway: SMSGateway (open source on-premises), https://github.com/multiOTP/SMSGateway
 *        spryng: Spryng (REST API), https://www.spryng.be
 *  spryngsimple: Spryng (Simple API), https://www.spryng.be
 *      swisscom: Swisscom LA (REST-JSON), https://messagingproxy.swisscom.ch:4300/rest/1.0.0/
 *        telnyx: Telnyx, https://developers.telnyx.com/docs/api/v2/messaging
 *
 *
 * Existing variables for URL and send_template:
 *   %api_id
 *   %from
 *   %ip
 *   %msg
 *   %password or %pass
 *   %port
 *   %to
 *   %username or %user
 *
 *
 * Examples:
 *
 *  // Predefined provider
 *  $sms_message = new MultiotpSms(array('provider'        => "clickatell",
 *                                       'api_id'          => "my_api_id",
 *                                       'username'        => "my_username",
 *                                       'password'        => "my_password",
 *                                       'from'            => "Sample",
 *                                       'to'              => "+41791234567",
 *                                       'msg'             => "Here is my message"
 *                                      ));
 *  echo ($sms_message->sendSMS() ? "OK" : "KO");
 *  echo "<br />\n";
 *  echo "Last reply info: ".$sms_message->getLastReplyInfo();
 *
 *  // Custom provider
 *  $sms_message2 = new MultiotpSms(array('provider'        => "my_local_sms_server",
 *                                        'username'        => "my_username",
 *                                        'password'        => "my_password",
 *                                        'url'             => "https://1.2.3.4/?PhoneNumber=%to&Text=%msg",
 *                                        'method'          => "GET",
 *                                        'encoding'        => "UTF",
 *                                        'status_success'  => "20",
 *                                        'content_success' => "Message Submitted",
 *                                        'basic_auth'      => true,
 *                                        'to'              => "+41791234567",
 *                                        'msg'             => "Here is my message"
 *                                       ));
 *  echo ($sms_message2->sendSMS() ? "OK" : "KO");
 *  echo "<br />\n";
 *  echo "Last reply info: ".$sms_message2->getLastReplyInfo();
 *
 *
 * Change Log
 *
 *   2025-02-18 5.9.9.3 SysCo/al Remove notice if default_values is empty
 *   2024-08-26 5.9.8.0 SysCo/al default_values added (for example: "ip=xxxx;port=yyy")
 *   2023-11-21 5.9.7.0 SysCo/al Cleaned code
 *   2023-03-21 5.9.5.8 SysCo/al smsgateway provider added
 *                               Specific URL can be specified in the constructor
 *   2022-12-26 5.9.5.3 SysCo/al Updated eCall API
 *                               Updated ASPSMS API
 *                               Enhanced payload handling
 *   2022-04-11 5.8.6.0 SysCo/al telnyx provider added
 *                               specific header option added
 *                               international format request added
 *   2021-08-26 5.8.3.0 SysCo/al aspsms-ucs2 for special chars (limited to 70 caracters) added
 *   2019-10-23 5.4.0.3 SysCo/al Define all parameters for preconfigured providers
 *   2018-11-02 5.4.0.3 SysCo/al Preconfigured providers added and tested
 *   2018-10-09 5.4.0.2 SysCo/al First implementation
 */
{
  // Standard values (for predefined providers)
  var $provider;
  var $api_id;
  var $ip;
  var $port;
  var $username;
  var $password;
  var $from;
  var $to;
  var $msg;
  
  // Custom values (for customized provider)
  var $url;
  var $send_template;
  var $method;
  var $encoding;
  var $status_success;
  var $content_success;
  var $no_double_zero;
  var $international_format;
  var $basic_auth;
  var $content_encoding;
  var $header;
  var $default_values;
  
  // Timeout
  var $timeout;

  // Debug flag
  var $debug;

  // This is automatically activated if needed
  var $encode_ampersand;

  var $last_result;
  var $reply_status;
  var $reply_content;


    function setProperty($property, $value) {
      $this->$property = $value;
    }

    function getProperty($property) {
      return $this->$property;
    }

    function __construct(
    $config_array = array()
  ) {
    $this->resetValues();
    $this->provider = isset($config_array['provider']) ? trim($config_array['provider']) : '';
    if (isset($config_array['url'])) { $this->url = trim($config_array['url']); }
    if (isset($config_array['send_template'])) { $this->send_template = $config_array['send_template']; }
    if (isset($config_array['api_id'])) { $this->api_id = $config_array['api_id']; }
    if (isset($config_array['ip'])) { $this->ip = $config_array['ip']; }
    if (isset($config_array['port'])) { $this->port = $config_array['port']; }
    if (isset($config_array['username'])) { $this->username = $config_array['username']; }
    if (isset($config_array['password'])) { $this->password = $config_array['password']; }
    if (isset($config_array['from'])) { $this->from = $config_array['from']; }
    if (isset($config_array['to'])) { $this->setTo($config_array['to']); }
    if (isset($config_array['msg'])) { $this->setMsg($config_array['msg']); }
    if (isset($config_array['method'])) { $this->method = $config_array['method']; }
    if (isset($config_array['encoding'])) { $this->encoding = $config_array['encoding']; }
    if (isset($config_array['status_success'])) { $this->status_success = $config_array['status_success']; }
    if (isset($config_array['content_success'])) { $this->content_success = $config_array['content_success']; }
    if (isset($config_array['no_double_zero'])) { $this->no_double_zero = (TRUE == $config_array['no_double_zero']); }
    if (isset($config_array['international_format'])) { $this->international_format = (TRUE == $config_array['international_format']); }
    if (isset($config_array['basic_auth'])) { $this->basic_auth = (TRUE == $config_array['basic_auth']); }
    if (isset($config_array['content_encoding'])) { $this->content_encoding = $config_array['content_encoding']; }
    if (isset($config_array['header'])) { $this->header = $config_array['header']; }
    if (isset($config_array['debug'])) { $this->debug = (TRUE == $config_array['debug']); }
    if (isset($config_array['timeout'])) { $this->timeout = intval($config_array['timeout']); }
    if (isset($config_array['encode_ampersand'])) { $this->encode_ampersand = (TRUE == $config_array['encode_ampersand']); }
    if (isset($config_array['default_values'])) { $this->default_values = $config_array['default_values']; }
    if ($this->timeout < 1) {
      $this->timeout = 5;
    }
    if ('' != $this->provider) { $this->setProvider($this->provider); }
  }


  function resetValues(
    $reset_provider = TRUE
  ) {
    if ($reset_provider) {
      $this->provider = "";
    }
    $this->url = "";
    $this->send_template = "";
    $this->api_id = "";
    $this->ip = "";
    $this->port = "";
    $this->username = "";
    $this->password = "";
    $this->from = "";
    $this->to = "";
    $this->msg = "";
    $this->method = "POST-XML";
    $this->encoding = "UTF";
    $this->status_success = "";
    $this->content_success = "";
    $this->timeout = 5;
    $this->last_result = FALSE;
    $this->reply_status = "";
    $this->reply_content = "";
    $this->no_double_zero = FALSE;
    $this->international_format = FALSE;
    $this->basic_auth = FALSE;
    $this->content_encoding = "";
    $this->header = "";
    $this->default_values = "";

    $this->encode_ampersand = FALSE;
  }


  function setNoDoubleZero(
    $value
  ) {
    $this->no_double_zero = (TRUE == $value);
  }


  function getNoDoubleZero()
  {
    return (TRUE == $this->no_double_zero);
  }


  function setInternationalFormat(
    $value
  ) {
    $this->international_format = (TRUE == $value);
  }


  function getInternationalFormat()
  {
    return (TRUE == $this->international_format);
  }


  function setEncoding(
    $encoding
  ) {
    $this->encoding = mb_strtoupper(mb_substr($encoding, 0, 3),'UTF-8');
  }


  function getEncoding()
  {
    $encoding = "UTF-8";
    if ('UTF' == mb_strtoupper(mb_substr($this->encoding, 0, 3),'UTF-8')) {
      $encoding = "UTF-8";
    } elseif ('ISO' == mb_strtoupper(mb_substr($this->encoding, 0, 3),'UTF-8')) {
      $encoding = "ISO-8859-1";
    }
    return $encoding;
  }


  function setProvider(
    $provider
  ) {
    switch ($provider) {
      case 'afilnet':
        $this->url = "https://www.afilnet.com/api/http/?class=sms&method=sendsms&user=%user&password=%pass&from=%from&to=%to&sms=%msg";
        $this->send_template = "";
        $this->method = "GET";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "\"status\":\"SUCCESS\"";
        $this->no_double_zero = TRUE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "URL";
        $this->header = "";
        break;
      case 'aspsms':
        $this->url = "https://xml3.aspsms.com/xmlsvr.asp https://xml4.aspsms.com/xmlsvr.asp";
        $this->send_template = "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\r\n".
                               "<aspsms>\r\n".
                               "  <Userkey>%user</Userkey>\r\n".
                               "  <Password>%pass</Password>\r\n".
                               "  <AffiliateId>208355</AffiliateId>\r\n".
                           "  <Recipient>\r\n".
                               "    <PhoneNumber>%to</PhoneNumber>\r\n".
                               "  </Recipient>\r\n".
                               "  <Originator>%from</Originator>\r\n".
                               "  <MessageData>%msg</MessageData>\r\n".
                               "  <Action>SendTextSMS</Action>\r\n".
                               "</aspsms>\r\n";
        $this->method = "POST-XML";
        $this->encoding = "ISO";
        $this->status_success = "20";
        $this->content_success = "<ErrorCode>1</ErrorCode>";
        $this->no_double_zero = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "HTML";
        break;
      case 'aspsms-ucs2':
        $this->url = "https://xml3.aspsms.com/xmlsvr.asp https://xml4.aspsms.com/xmlsvr.asp";
        $this->send_template = "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\r\n".
                               "<aspsms>\r\n".
                               "  <Userkey>%user</Userkey>\r\n".
                               "  <Password>%pass</Password>\r\n".
                               "  <AffiliateId>208355</AffiliateId>\r\n".
                               "  <Recipient>\r\n".
                               "    <PhoneNumber>%to</PhoneNumber>\r\n".
                               "  </Recipient>\r\n".
                               "  <Originator>%from</Originator>\r\n".
                               "  <XSer>020108</XSer>\r\n".
                               "  <MessageData>%ucs2msg</MessageData>\r\n".
                               "  <Action>SendBinaryData</Action>\r\n".
                               "</aspsms>\r\n";
        $this->method = "POST-XML";
        $this->encoding = "ISO";
        $this->status_success = "20";
        $this->content_success = "<ErrorCode>1</ErrorCode>";
        $this->no_double_zero = FALSE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "HTML";
        $this->header = "";
        break;
      case 'clickatell':
        $this->url = "https://api.clickatell.com/xml/xml http://api.clickatell.com/xml/xml";
        $this->send_template = "data=<clickAPI>".
                                 "<sendMsg>".
                                   "<api_id>%api_id</api_id>".
                                   "<user>%user</user>".
                                   "<password>%pass</password>".
                                   "<to>%to</to>".
                                   "<from>%from</from>".
                                   "<text><![CDATA[%msg]]></text>".
                                 "</sendMsg>".
                               "</clickAPI>";
        $this->method = "POST";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "<apiMsgId>";
        $this->no_double_zero = TRUE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "";
        $this->header = "";
        break;
      case 'clickatell2':
        $this->url = "https://platform.clickatell.com/messages/http/send?apiKey=%api_id&to=%to&content=%msg";
        $this->send_template = "";
        $this->method = "GET";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "\"accepted\":true";
        $this->no_double_zero = TRUE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "URL";
        $this->header = "";
        break;
      case 'ecall':
        $this->url = "https://url.ecall.ch/api/sms?username=%user&password=%pass&address=%to&message=%msg";
        $this->send_template = "";
        $this->method = "GET";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "0";
        $this->no_double_zero = FALSE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "URL";
        $this->header = "";
        break;
      case 'intellisms':
        $this->url = "https://www.intellisoftware.co.uk/smsgateway/sendmsg.aspx https://www.intellisoftware2.co.uk/smsgateway/sendmsg.aspx";
        $this->send_template = "username=%user&password=%pass&originator=%from&to=%to&text=%msg&type=1";
        $this->method = "POST";
        $this->encoding = "ISO";
        $this->status_success = "20";
        $this->content_success = "ID:";
        $this->no_double_zero = TRUE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "URL";
        $this->header = "";
        break;
      case 'nexmo':
        $this->url = "https://rest.nexmo.com/sms/json";
        $this->send_template = "api_key=%api_id&api_secret=%pass&from=%from&to=%to&text=%msg";
        $this->method = "POST";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "\"status\": \"0\"";
        $this->no_double_zero = TRUE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "URL";
        $this->header = "";
        break;
      case 'nowsms':
        if (empty($this->url)) {
          $this->url = "http://%ip:%port/?PhoneNumber=%to&Text=%msg";
        }
        $this->send_template = "";
        $this->method = "GET";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "Message Submitted";
        $this->no_double_zero = FALSE;
        $this->international_format = FALSE;
        $this->basic_auth = TRUE;
        $this->content_encoding = "";
        $this->header = "";
        break;
      case 'smseagle':
        if (empty($this->url)) {
          $this->url = "https://%ip:%port/index.php/http_api/send_sms?login=%user&pass=%pass&to=%to&message=%msg";
        }
        $this->send_template = "";
        $this->method = "GET";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "OK";
        $this->no_double_zero = FALSE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "";
        $this->header = "";
        break;
      case 'smsgateway':
        if (empty($this->url)) {
          $this->url = "https://%ip:%port/smsgateway/index.php?id=%api_id&h=%pass&to=%to&message=%msg";
        }
        $this->send_template = "";
        $this->method = "GET";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "\"X-SMSGateway-State\" content=\"NEW\"";
        $this->no_double_zero = FALSE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "";
        $this->header = "";
        break;
      case 'spryng':
        $this->url = "https://rest.spryngsms.com/v1/messages";
        $this->send_template = "{\n".
                               "  \"body\": \"%msg\",\n".
                               "  \"encoding\": \"auto\",\n".
                               "  \"originator\": \"%from\",\n".
                               "  \"recipients\": [\n".
                               "    \"%to\"\n".
                               "  ],\n".
                               "  \"route\": \"%ip\"\n".
                               "}";
        $this->method = "POST-JSON";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "";
        $this->no_double_zero = TRUE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "QUOTES";
        $this->header = "Authorization: Bearer %api_id\r\n";
        $this->default_values = "ip=business";
        break;

      case 'spryngsimple':
        $this->url = "https://rest.spryngsms.com/api/simple/message?=null";
        $this->send_template = "route=%ip&username=%user&secret=%pass&sender=%from&destination=%to&body=%msg";
        $this->method = "POST";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "";
        $this->no_double_zero = TRUE;
        $this->international_format = FALSE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "";
        $this->header = "";
        $this->default_values = "ip=business";
        break;

      case 'swisscom':
        $this->url = "https://messagingproxy.swisscom.ch:4300/rest/1.0.0/submit_sm/%api_id";
        $this->send_template = "{\n".
                               "\"source_addr_ton\": 5,\n".
                               "\"source_addr_npi\": 0,\n".
                               "\"source_addr\": \"%from\",\n".
                               "\"destination_addr\": \"%to\",\n".
                               "\"short_message\": \"%msg\"\n".
                               "}";
        $this->method = "POST-JSON";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "\"command_status\":0";
        $this->no_double_zero = TRUE;
        $this->international_format = FALSE;
        $this->basic_auth = TRUE;
        $this->content_encoding = "QUOTES";
        $this->header = "";
        break;
      case 'telnyx':
        $this->url = "https://api.telnyx.com/v2/messages";
        $this->send_template = "{\n".
                               "\"from\": \"%from\",\n".
                               "\"to\": \"%to\",\n".
                               "\"text\": \"%msg\"\n".
                               "}";
        $this->method = "POST-JSON";
        $this->encoding = "UTF";
        $this->status_success = "20";
        $this->content_success = "\"errors\": []";
        $this->no_double_zero = FALSE;
        $this->international_format = TRUE;
        $this->basic_auth = FALSE;
        $this->content_encoding = "QUOTES";
        $this->header = "Authorization: Bearer %api_id\r\n";
        break;
      default:
        break;
    }
  }


  function getCustomValues()
  {
    return array('url'                  => $this->url,
                 'ip'                   => $this->ip,
                 'port'                 => $this->port,
                 'send_template'        => $this->send_template,
                 'method'               => $this->method,
                 'encoding'             => $this->encoding,
                 'status_success'       => $this->status_success,
                 'content_success'      => $this->content_success,
                 'no_double_zero'       => $this->no_double_zero,
                 'international_format' => $this->international_format,
                 'basic_auth'           => $this->basic_auth,
                 'content_encoding'     => $this->content_encoding,
                 'header'               => $this->header,
                );
  }


  function setCustomValues(
    $custom_array = array()
  ) {
    if (isset($custom_array['url']))                  { $this->url = $custom_array['url']; }
    if (isset($custom_array['ip']))                   { $this->ip = $custom_array['ip']; }
    if (isset($custom_array['port']))                 { $this->port = $custom_array['port']; }
    if (isset($custom_array['send_template']))        { $this->send_template = $custom_array['send_template']; }
    if (isset($custom_array['method']))               { $this->method = $custom_array['method']; }
    if (isset($custom_array['encoding']))             { $this->encoding = $custom_array['encoding']; }
    if (isset($custom_array['status_success']))       { $this->status_success = $custom_array['status_success']; }
    if (isset($custom_array['content_success']))      { $this->content_success = $custom_array['content_success']; }
    if (isset($custom_array['no_double_zero']))       { $this->no_double_zero = $custom_array['no_double_zero']; }
    if (isset($custom_array['international_format'])) { $this->international_format = $custom_array['international_format']; }
    if (isset($custom_array['basic_auth']))           { $this->basic_auth = $custom_array['basic_auth']; }
    if (isset($custom_array['content_encoding']))     { $this->content_encoding = $custom_array['content_encoding']; }
    if (isset($custom_array['header']))               { $this->header = $custom_array['header']; }
  }


  function getReplyStatus()
  {
    return $this->reply_status;
  }


  function getReplyContent()
  {
    return $this->reply_content;
  }


  function getLastReplyInfo()
  {
    $result = preg_replace('!\s+!', ' ', str_replace(chr(10), ' ', (str_replace(chr(13), ' ', $this->reply_content))));
    return (($this->reply_status != '') ? $this->reply_status.", " : '') . $result;
  }


  function getLastSendInfo()
  {
    $result = "provider: ".$this->provider."; ";
    $result.= "api_id: ".$this->api_id."; ";
    $result.= "username: ".$this->username."; ";
    $result.= "password: ".$this->password."; ";
    $result.= "from: ".$this->from."; ";
    $result.= "to: ".$this->to."; ";
    $result.= "msg: ".$this->msg."; ";

    $result.= "url: ".$this->url."; ";
    $result.= "send_template: ".$this->send_template."; ";
    $result.= "method: ".$this->method."; ";
    $result.= "encoding: ".$this->encoding."; ";
    $result.= "status_success: ".$this->status_success."; ";
    $result.= "content_success: ".$this->content_success."; ";
    $result.= "no_double_zero: ".$this->no_double_zero."; ";
    $result.= "international_format: ".$this->international_format."; ";
    $result.= "basic_auth: ".$this->basic_auth."; ";
    $result.= "content_encoding: ".$this->content_encoding."; ";
    $result.= "header: ".$this->header."; ";

    $result.= "encode_ampersand: ".$this->encode_ampersand."; ";

    $result.= "timeout: ".$this->timeout."; ";
    $result.= "debug: ".$this->debug."; ";
    
    $result = preg_replace('!\s+!', ' ', str_replace(chr(10), ' ', (str_replace(chr(13), ' ', $result))));
    
    return $result;
  }


  function setTimeout(
    $timeout
  ) {
    $this->timeout = $timeout;
    if ($this->timeout < 1) {
      $this->timeout = 5;
    }
  }


  function setFrom(
    $from
  ) {
    $this->from = $from;
  }


  function setTo(
    $to
  ) {
    $this->to = $to;
  }


  function cleanTo(
    $to = ""
  ) {
    if ("" != $to) {
      $value = $to;
    } else {
      $value = $this->to;
    }
    $value = str_replace(' ','',$value);
    $value = str_replace('(','',$value);
    $value = str_replace(')','',$value);
    $value = str_replace('+','00',$value);

    if (('00' == substr($value,0,2)) && ($this->getInternationalFormat())) {
      $value = "+" . substr($value,2);
    } elseif ($this->getInternationalFormat()) {
      $value = "+" . $value;
    } elseif (('00' == substr($value,0,2)) && ($this->getNoDoubleZero())) {
      $value = substr($value,2);
    }
    return $value;
  }


  function enableBasicAuth()
  {
    $this->basic_auth = TRUE;
  }


  function disableBasicAuth()
  {
    $this->basic_auth = FALSE;
  }


  function enableDebug()
  {
    $this->debug = TRUE;
  }


  function disableDebug()
  {
    $this->debug = FALSE;
  }


  function setMsg(
    $msg
  ) {
    /*
     * The msg is automatically converted from ISO to UTF-8 if needed
     */
    $text = $msg;
    $encoding = mb_detect_encoding($text . 'a' , 'UTF-8, ISO-8859-1');
    if ("UTF-8" != $encoding) {
      $text = utf8_encode($text);
    }
    $this->msg = $text;
  }


  function setSendTemplate(
    $send_template
  ) {
    /*
     * The msg is automatically converted from ISO to UTF-8 if needed
     */
    $text = $send_template;
    $encoding = mb_detect_encoding($text . 'a' , 'UTF-8, ISO-8859-1');
    if ("UTF-8" != $encoding) {
      $text = utf8_encode($text);
    }
    $this->send_template = $text;
  }


  function encodeString(
    $string,
    $encoding = ""
  ) {
    $text = $string;

    $encoding_to = $encoding;
    if ('' == $encoding_to) {
      $encoding_to = $this->getEncoding();
    }

    $encoding_from = mb_detect_encoding($text . 'a' , 'UTF-8, ISO-8859-1');

    if ("UTF-8" != $encoding_from) {
      if ('UTF' == strtoupper(substr($encoding_to, 0, 3))) {
        $text = utf8_encode($text);
      }
    } else {
      if ('UTF' != strtoupper(substr($encoding_to, 0, 3))) {
        $text = utf8_decode($text);
      }
    }

    return ($text);
  }
  
  
  function encodeHttp(
    $string
  ) {
    $text = $this->encodeString($string);
    if ("UTF" != strtoupper(substr($this->getEncoding(),0,3))) {
      $charset = 'ISO-8859-1';
    } else {
      $charset = 'UTF-8';
    }
    
    if ('HTML' == strtoupper($this->content_encoding)) {
      $text = htmlspecialchars($text, ENT_QUOTES | ENT_HTML401, $charset);
    } elseif ('URL' == strtoupper($this->content_encoding)) {
      $text = urlencode($text);
    } elseif ('QUOTES' == strtoupper($this->content_encoding)) {
      $text = str_replace('"', '\"', $text);
    }
    return $text;
  }

  
  function encodeUrl(
    $string
  ) {
    $text = $this->encodeString($string);
    $text = urlencode($text);
    return $text;
  }

  
  function sendSMS(
    $msg = ""
  ) {
    $result = FALSE;

    if ('' != $msg) {
      $this->setMsg($msg);
    }
    
    /* Payload replacement */
    $payload = $this->send_template;
    $payload = $this->encodeString($payload);
    
    $payload_msg = $this->msg;
    $ucs2_msg = bin2hex(mb_convert_encoding($this->msg, 'UCS-2', 'auto'));

    if (FALSE !== mb_strpos($payload, "![CDATA[", 0, mb_detect_encoding($payload . 'a' , 'UTF-8, ISO-8859-1'))) {
      $this->encode_ampersand = TRUE;
    }
    
    if ($this->encode_ampersand) {
      $payload_msg = str_replace('&', '%26', $payload_msg);
    }
    
    $default_values = trim($this->default_values);
    if (!empty($default_values)) {
      foreach (explode(";",trim($default_values)) as $one_default_value_array) {
        list($key, $value) = explode('=', $one_default_value_array);
        $property_key = trim($this->getProperty($key));
        if (empty($property_key)) {
          $this->setProperty($key, $value);
        }
      }
    }

    $payload = str_replace('%ip',       $this->ip,                                    $payload);
    if (intval($this->port) <= 0) {
      $payload = str_replace(':%port',  '',                                           $payload);
    } else {
      $payload = str_replace('%port',   $this->port,                                  $payload);
    }
    $payload = str_replace('%msg',      $this->encodeHttp($payload_msg),              $payload);
    $payload = str_replace('%ucs2msg',  $ucs2_msg,                                    $payload);
    $payload = str_replace('%api_id',   $this->encodeHttp($this->api_id),             $payload);
    $payload = str_replace('%username', $this->encodeHttp($this->username),           $payload);
    $payload = str_replace('%user',     $this->encodeHttp($this->username),           $payload);
    $payload = str_replace('%password', $this->encodeHttp($this->password),           $payload);
    $payload = str_replace('%pass',     $this->encodeHttp($this->password),           $payload);
    $payload = str_replace('%to',       $this->encodeHttp($this->cleanTo($this->to)), $payload);
    $payload = str_replace('%from',     $this->encodeHttp($this->from),               $payload);

    /* Header replacement */
    $header = $this->header;
    $header = str_replace('%ip',       $this->ip,                                    $header);
    if (intval($this->port) <= 0) {
      $header = str_replace(':%port',  '',                                           $header);
    } else {
      $header = str_replace('%port',   $this->port,                                  $header);
    }
    $header = str_replace('%msg',      $this->encodeHttp($this->msg),                $header);
    $header = str_replace('%api_id',   $this->encodeHttp($this->api_id),             $header);
    $header = str_replace('%username', $this->encodeHttp($this->username),           $header);
    $header = str_replace('%user',     $this->encodeHttp($this->username),           $header);
    $header = str_replace('%password', $this->encodeHttp($this->password),           $header);
    $header = str_replace('%pass',     $this->encodeHttp($this->password),           $header);
    $header = str_replace('%to',       $this->encodeHttp($this->cleanTo($this->to)), $header);
    $header = str_replace('%from',     $this->encodeHttp($this->from),               $header);

    /* Url replacement */
    $url_array = explode(' ', $this->url);

    foreach ($url_array as $one_url) {
      
      $one_url = str_replace('%ip',       $this->ip,                                   $one_url);
      if (intval($this->port) <= 0) {
        $one_url = str_replace(':%port',  '',                                          $one_url);
      } else {
        $one_url = str_replace('%port',   $this->port,                                 $one_url);
      }
      $one_url = str_replace('%msg',      $this->encodeUrl($this->msg),                $one_url);
      $one_url = str_replace('%api_id',   $this->encodeUrl($this->api_id),             $one_url);
      $one_url = str_replace('%username', $this->encodeUrl($this->username),           $one_url);
      $one_url = str_replace('%user',     $this->encodeUrl($this->username),           $one_url);
      $one_url = str_replace('%password', $this->encodeUrl($this->password),           $one_url);
      $one_url = str_replace('%pass',     $this->encodeUrl($this->password),           $one_url);
      $one_url = str_replace('%to',       $this->encodeUrl($this->cleanTo($this->to)), $one_url);
      $one_url = str_replace('%from',     $this->encodeUrl($this->from),               $one_url);

      $server_port = 80;

      $pos = mb_strpos($one_url, '://');
      if (FALSE === $pos) {
        $protocol = '';
      } else {
        switch (mb_strtolower(substr($one_url,0,$pos),'UTF-8')) {
          case 'https':
          case 'ssl':
            $protocol = 'ssl://';
            $server_port = 443;
            break;
          case 'tls':
            $protocol = 'tls://';
            $server_port = 443;
            break;
          default:
            $protocol = '';
            break;
        }
        $one_url = substr($one_url,$pos+3);
      }

      $pos = mb_strpos($one_url, '/');
      if (FALSE === $pos) {
        $host = $one_url;
        $url = '/';
      } else {
        $host = substr($one_url,0,$pos);
        $url = substr($one_url,$pos); // And not +1 as we want the / at the beginning
      }

      $pos = mb_strpos($host, ':');
      if (FALSE !== $pos) {
        $server_port = substr($host,$pos+1);
        $host = substr($host,0,$pos);
      }

      if (function_exists("stream_socket_client")) {
        $sslContext = stream_context_create(
          array('ssl' => array(
                'verify_peer'         => false,
                'verify_peer_name'    => false,
                'disable_compression' => true,
                'ciphers'             => 'ALL!EXPORT!EXPORT40!EXPORT56!aNULL!LOW!RC4')));
        $fp = @stream_socket_client($protocol.$host.":".$server_port, $errno, $errdesc, $this->timeout, STREAM_CLIENT_CONNECT, $sslContext);
      } else {
        $fp = @fsockopen($protocol.$host, $server_port, $errno, $errdesc, $this->timeout);
      }

      if (FALSE !== $fp) {
        $info['timed_out'] = FALSE;
        $output = "";
        if ('GET' == strtoupper(substr($this->method, 0, 3))) {
          $output.= "GET";
        } elseif ('POST' == strtoupper(substr($this->method, 0, 4))) {
          $output.= "POST";
        } else {
          $output.= "POST";
        }
        $output.= " ".$url." HTTP/1.0\r\n";
        if ('XML' == strtoupper(substr($this->method, -3))) {
          $output.= "Content-Type: text/xml\r\n";
        } elseif ('JSON' == strtoupper(substr($this->method, -4))) {
          $output.= "Content-Type: application/json\r\n";
        } else {
          $output.= "Content-Type: application/x-www-form-urlencoded\r\n";
        }
        $output.= $header;

        if ($this->basic_auth) {
          $auth_user = (('' != $this->username) ? $this->username : $this->api_id);
          $output.= "Authorization: Basic ".base64_encode($auth_user.":".$this->password)."\r\n";
        }
        $output.= "Content-Length: ".strlen($payload)."\r\n";
        $output.= "User-Agent: multiOTP SMS\r\n";
        $output.= "Host: ".$host."\r\n";

        $output.= "\r\n";

        if (0 != strlen($payload)) {
          $output.= $payload;
          $output.= "\r\n";
        }

        fputs($fp, $output);
        $stream_timeout = $this->timeout;
        stream_set_blocking($fp, TRUE);
        stream_set_timeout($fp, $stream_timeout);
        $info = stream_get_meta_data($fp); 

        $reply = '';
        $last_length = 0;
        while ((!feof($fp)) && ((!$info['timed_out']) || ($last_length != strlen($reply)))) {
          $last_length = strlen($reply);
          $reply.= @fgets($fp, 1024);
          $info = stream_get_meta_data($fp);
          // @ob_flush(); // Avoid notice if any (if the buffer is empty and therefore cannot be flushed)
          // flush(); 
        }
        fclose($fp);

        if ($info['timed_out']) {
          $result = FALSE;
          $this->reply_status = "408";
          $this->reply_content = "Timeout after $stream_timeout seconds for $protocol$host:$server_port with a result code of $errno ($errdesc)";
        } else {
          $pos = mb_strpos(mb_strtolower($reply,'UTF-8'), "\r\n\r\n");
          $header = substr($reply, 0, $pos);
          $answer = substr($reply, $pos + 4);
          $header_array = explode(" ", $header."   ");
          $this->reply_status = intval($header_array[1]);
          $this->reply_content = $answer;
          $result_status = false;
          $result_content = false;
          if (intval(trim($this->status_success)) > 0) {
            if (trim($this->status_success) == substr(trim($this->reply_status), 0, strlen($this->status_success))) {
              $result_status = TRUE;
            }
          } else {
            $result_status = TRUE;
          }
          if ('' != $this->content_success) {
            if (FALSE !== mb_strpos($this->reply_content, $this->content_success)) {
              $result_content = TRUE;
            }
          } else {
            $result_content = TRUE;
          }
        }
        $result = $result_status && $result_content;

        if (TRUE == $this->debug) {
          echo "DEBUG ONE_URL: $one_url<br />\n)";
          echo "DEBUG URL: $url<br />\n)";
          echo "DEBUG SENT: $output<br />\n)";
          echo "DEBUG REPLY: $reply<br />\n)";
        }
      }

      if (TRUE == $this->debug) {
        echo "DEBUG LAST ONE_URL: $one_url<br />\n)";
        echo "DEBUG LAST URL: $url<br />\n)";
      }

      if (TRUE == $this->debug) {
        echo "DEBUG payload: $payload<br />\n)";
        echo "DEBUG reply_status : ".$this->reply_status."<br />\n";
        echo "DEBUG reply_content : ".$this->reply_content."<br />\n";
        echo "DEBUG status_success : ".$this->status_success."<br />\n";
        echo "DEBUG content_success : ".$this->content_success."<br />\n";
      }

      if ($result) {
        return $result;
      }
    } // foreach
    if (TRUE == $this->debug) {
      echo "DEBUG result_status: " . (isset($result_status) ? ($result_status ? "TRUE" : "FALSE") : "") . "<br />\n)";
      echo "DEBUG result_content: " . (isset($result_content) ? ($result_content ? "TRUE" : "FALSE") : "") . "<br />\n)";
    }
    return $result;
  }
}

?>