Add option to send events to a configurable remote event listener

A new configuration option "remote_events_url" is declared. When defined
on each new event, AgilityContest try to send json encoded data to provided URL.
Is up to the listener, enqueue, parse and handle received events

agility/console/dialogs/dlg_configuracion.inc

@@ -506,6 +506,9 @@ $config =Config::getInstance();
             <input type="hidden" name="register_events" value="0"/> <!-- trick for checkboxes -->
             <input type="checkbox" name="register_events" id="register_events" value="1"/><br />
 
+            <label for="remote_events_url"> <?php _e('Remote events listener URL'); ?> </label>
+            <input id="remote_events_url" name="remote_events_url" type="text" size="48" value=""/>
+
 			<label for="event_printer"><?php _e('Printer device name to write tablet reports'); ?></label>
 			<input id="event_printer" name="event_printer" type="text" size="10" value=""/> <?php _e('Paper size'); ?>:
 			<label for="wide_printer58" style="width:70px;">
@@ -617,6 +620,7 @@ $config =Config::getInstance();
     $('#email_realm').textbox();
     $('#email_workstation').textbox();
     $('#ip_address').textbox().textbox('setValue','<?php $a=new networkInterfaces(); echo implode(" - ",$a->get_interfaces());?>');
+    $('#remote_events_url').textbox();
     $('#event_printer').textbox();
     $('#backup_dir').textbox();
 
@@ -628,7 +632,8 @@ $config =Config::getInstance();
         textField:'Name'
     });
 
-	addTooltip($('#event_printer').linkbutton(),'<?php _e("Enter printer name/device or leave empty to disable"); ?>');
+    addTooltip($('#remote_events_url').textbox('textbox'),'<?php _e("Enter (optional) URL to send events to (or leave empty)"); ?>');
+    addTooltip($('#event_printer').textbox('textbox'),'<?php _e("Enter printer name/device or leave empty to disable"); ?>');
 	addTooltip($('#config-resetBtn').linkbutton(),'<?php _e("Cancel changes. Restore information from server"); ?>');
 	addTooltip($('#config-defaultBtn').linkbutton(),'<?php _e("Factory reset. Configure with default data"); ?>');
 	addTooltip($('#config-okBtn').linkbutton(),'<?php _e("Accept changes. Save as new configuration"); ?>');

agility/server/auth/Config.php

@@ -44,6 +44,7 @@
 /** logging **/
 define('AC_DEBUG_LEVEL','0');
 define('AC_REGISTER_EVENTS',"0"); // write events into file
+define('AC_REMOTE_EVENTS_URL',""); // URL to send events outside server. format: http(s)://{host}:{port}/{baseurl}
 define('AC_CONSOLE_EVENTS',"0"); // track and show events in cosole
 define('AC_CONSOLE_NEWS',"1"); // ask server for news on startup
 define('AC_RESET_EVENTS',"1"); // clear event registry on login
@@ -196,6 +197,7 @@
 		// version, logging y depuracion
 		'debug_level' 		=> array(	'i',	false,	AC_DEBUG_LEVEL),
 		'register_events'	=> array(	'b',	false,	AC_REGISTER_EVENTS),
+		'remote_events_url'=> array(	's',	false,	AC_REMOTE_EVENTS_URL),
         'reset_events'		=> array(	'b',	false,	AC_RESET_EVENTS),
 		'console_events'	=> array(	'b',	false,	AC_CONSOLE_EVENTS),
 		'console_news'		=> array(	'i',	false,	AC_CONSOLE_NEWS),

agility/server/database/classes/Eventos.php

@@ -222,8 +222,7 @@ function putEvent(&$data) {
 		$data['TimeStamp']=$timestamp;
 		$data['ID']=$this->conn->insert_id;
 		$stmt->close();
-
-		// and save content to event file
+		// if saving event file is requested, handle it
 		$flag=$this->myConfig->getEnv("register_events");
 		$str=json_encode($data);
 		if (boolval($flag)) {
@@ -234,8 +233,14 @@ function putEvent(&$data) {
 			// just overwrite event file with last event
 			file_put_contents($this->sessionFile,$str."\n",LOCK_EX);
 		}
-		// if printer is enabled, send every "accept" events
-		if ($data['Type']=='aceptar') {
+        // if a remote server to send events is declared, try also to send data
+        $revents_url=$this->myConfig->getEnv("remote_events_url");
+        if (! is_null($revents_url) &&  trim($revents_url) != "") {
+            $this->uploadEvent($revents_url,$str);
+        }
+		// if raw printer is enabled, send every "accept" events
+        $printerName=$this->myConfig->getEnv("event_printer");
+        if ( (! is_null($printerName)) &&  (trim($printerName) != "") && ($data['Type']=='aceptar') ) {
 			$p=new RawPrinter();
 			$p->rawprinter_Print($data);
 		}
@@ -244,6 +249,47 @@ function putEvent(&$data) {
 		return ""; 
 	}
 
+    /**
+     * Send event to server as json data. Ignore response
+     * and receive answer
+     * @param {string} $host
+     * @param {int} $port
+     * @throws Exception
+     */
+    function uploadEvent($url,$data) {
+        // first of all, check internet conectivity
+        if (isNetworkAlive()<0) {
+            throw new Exception("updater::SendJSONRequest(): No internet access available");
+        }
+        // do not verify cert on localhost
+        $checkcert=true;
+        if (strpos($url,"localhost")!=false)  $checkcert=false;
+        if (strpos($url,"127.0.0.1")!=false)  $checkcert=false;
+        $hdata=array(
+            "Operation" => 'putEvent'
+        );
+        $pdata=array(
+            'Data' => $data
+        );
+        // prepare and execute json request
+        $curl = curl_init($url."?".http_build_query($hdata) );
+        curl_setopt($curl, CURLOPT_POST, 1);
+        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
+        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); // allow server redirection
+        curl_setopt($curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4); // try to fix some slowness issues in windozes
+        curl_setopt($curl, CURLOPT_POSTREDIR, 1); // do not change from post to get on "301 redirect"
+        curl_setopt($curl, CURLOPT_POSTFIELDS, $pdata );
+        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, $checkcert); // set to false when using "localhost" url
+        curl_setopt($curl,CURLOPT_CONNECTTIMEOUT, 5); // wait 5 secs to attemp connect
+
+        $json_response = @curl_exec($curl); // supress stdout warning
+        if ( curl_error($curl) ) {
+            $this->myLogger->error("event::uploadEvent() call to URL $url failed: " . curl_error($curl) );
+        }
+        // close curl stream
+        curl_close($curl);
+    }
+
 	/**
 	 * send 'reconfig' event to every sessions
 	 */