Added Tele2 API (#1130)

* Added Tele2 API

* Fixed mistake, added to readme, added number formatting

Co-authored-by: larsec <larsec@novea.nu>
Co-authored-by: Lars Scheibling <lars.scheibling@hoglandet.se>
Co-authored-by: Tim Zandbergen <TimZ99@users.noreply.github.com>

README.rst

@@ -67,6 +67,7 @@ The following SMS gateways are currently available:
 * PromoSMS - <https://promosms.com>
 * Infobip - <https://www.infobip.com>
 * LabsMobile - <https://www.labsmobile.com>
+* Tele2 Messaging - <https://portal.tele2messaging.com>
 
 Please note: for these gateways you will need an account with sufficient credits.
 

src/includes/functions.inc.php

@@ -810,6 +810,9 @@ namespace {
             case 'labsmobile':
                 $sms = new \psm\Txtmsg\LabsMobile();
                 break;
+            case 'tele2':
+                $sms = new \psm\Txtmsg\Tele2();
+                break;
         }
 
         // copy login information from the config file

src/psm/Txtmsg/Tele2.php

@@ -0,0 +1,143 @@
+<?php
+
+/**
+ * PHP Server Monitor
+ * Monitor your servers and websites.
+ *
+ * This file is part of PHP Server Monitor.
+ * PHP Server Monitor is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PHP Server Monitor is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with PHP Server Monitor.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @package     phpservermon
+ * @author      Victor Macko
+ * @copyright   Copyright (c) 2008-2017 Pepijn Over <pep@mailbox.org>
+ * @license     http://www.gnu.org/licenses/gpl.txt GNU GPL v3
+ * @version     Release: @package_version@
+ * @link        http://www.phpservermonitor.org/
+ * @since       phpservermon 3.6.0
+ **/
+
+namespace psm\Txtmsg;
+
+class Tele2 extends Core
+{
+    /**
+     * Formats the number to e.g. 45701234567 instead of +45701234567/00451234567
+     * Error if the number begins with a single 0, indicates no country code has been provided. 
+     * Will still attempt to send to this and other numbers, but return an error message.
+     * Also remove spaces, braces and other special characters
+     */
+    private function formatNumber( $number ) : string 
+    {
+        $number = str_replace(['-', ' ', '(', ')'], '', $number);
+		
+        if (substr($number, 0, 1) === '+') {
+            return substr($number, 1);
+        }
+        elseif (substr($number, 0, 2) === '00') {
+            return substr($number, 2);
+        }
+        elseif (substr($number, 0, 1) === '0') {
+            return null;
+        }
+		else return $number;
+
+    }
+
+
+    /**
+     * Send sms using the Tele2 Messaging API based on Infobip
+     * The username can be blank, password is the API key
+     * 
+     *
+     * @var string $message
+     * @var string $this->baseurl
+     * @var string $this->password
+     * @var array $this->recipients
+     * @var array $this->originator
+     * @var string $recipients
+     *
+     * @var resource $curl
+     * @var string $err
+     * @var mixed $result
+     *
+     * @var int $success
+     * @var string $error
+     *
+     * @return bool|string
+     */
+
+ 
+					
+    public function sendSMS($message)
+    {      
+        $success = 1;
+        $error = '';
+
+        /**
+         * Creates a curl object, loops through participants to add them to the same message and makes a single API call to send to all
+         */
+        $ch = curl_init("https://api.tele2messaging.com/sms/2/text/advanced");
+        
+        
+        
+        $recipients = [];
+
+        foreach ($this->recipients as $recipient) {
+            $format = $this->formatNumber($recipient);
+            if (!$format) {
+                $error = "ERROR: Incorrect format, needs to include country code (e.g. 45123456789 instead of 0123456789/450123456789/+45123456789/0045123456789)";
+            }
+            $recipients[] = [
+               'to' => $format ?? $recipient
+            ];
+        }
+
+        $postfields = [
+            'messages' => [
+                [
+                    'from' => $this->originator,
+                    'destinations' => $recipients,
+                    'text' => "$message"
+                ]
+            ]
+        ];
+
+        curl_setopt_array($ch, [
+            CURLOPT_POST => 1,
+            CURLOPT_RETURNTRANSFER 	=> false,
+            CURLOPT_MAXREDIRS 		=> 10,
+            CURLOPT_TIMEOUT 		=> 0,
+            CURLOPT_FOLLOWLOCATION 	=> true,
+            CURLOPT_HTTP_VERSION 	=> CURL_HTTP_VERSION_1_1,
+            CURLOPT_CUSTOMREQUEST 	=> 'POST',
+            CURLOPT_POSTFIELDS 		=> json_encode($postfields),
+            CURLOPT_HTTPHEADER => [
+                'AUTHORIZATION: App '.$this->password,
+                'Content-Type: application/json',
+                'Accept: application/json'
+            ],
+        ]);
+                   
+        $result = curl_exec($ch);
+        $returncode = curl_getinfo($ch, CURLINFO_RESPONSE_CODE);
+
+        if ($returncode !== 200 || $error !== '') {
+            $success = 0;
+            $error .= $result;
+        }
+        
+        return ($success === 1 ? 1 : $error);
+    }   
+}
+