forgot to add

src/eyesis4pi/eyesis4pi_interface.php

@@ -39,6 +39,7 @@ switch($cmd){
     break;
   case "free_space":
     if ($_GET['mountpoint']=="/mnt/sda2"){
+      respond_xml("test");
       //unpartitioned area
     }else{
         if (is_dir($mountpoint)) $res = disk_free_space($mountpoint);

src/php_top/parallel_requests.php

+<?php
+/*!***************************************************************************
+*! FILE NAME  : parallel_requests.php
+*! DESCRIPTION: send out parallel url requests and collect responses
+*! Copyright (C) 2016 Elphel, Inc
+*! -----------------------------------------------------------------------------**
+*!
+*!  This program 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.
+*!
+*!  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*! -----------------------------------------------------------------------------**
+*/
+
+// Using parallel requests, PHP has to be configured '--with-curl=' (and libcurl should be installed)
+function curl_multi_start($urls) {
+	// numprime is needed to actually send the request and remote starts executing it
+	// Not really clear - what it should be
+	$numprime = 4; // magic number, see http://lampe2e.blogspot.com/2015/03/making-stuff-faster-with-curlmultiexec.html
+	$curl_mh = curl_multi_init ();
+	$aCurlHandles = array ();
+	foreach ($urls as $url) {
+		$ch = curl_init ();
+		curl_setopt ($ch, CURLOPT_URL, $url);
+		curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
+		curl_setopt ($ch, CURLOPT_HEADER, 0);
+		$aCurlHandles[] = $ch;
+		curl_multi_add_handle ($curl_mh, $ch);
+	}
+	$curl_active = count ($urls);
+	for($x = 0; $x < $numprime && $curl_active; $x++) {
+		curl_multi_exec ($curl_mh, $curl_active);
+		// we wait for a bit to allow stuff TCP handshakes to complete and so forth...
+		usleep (10000);
+//		echo ".";
+	}
+	return array ("mh" => $curl_mh,"handles" => $aCurlHandles);
+}
+	
+function curl_multi_finish($data, $use_xml=true, $ntry=0, $echo = false) {
+	$curl_active = 1;
+	$curl_mrc = CURLM_OK;
+	$nrep = 0;
+	$curl_mh = $data['mh'];
+	while ($curl_active && $curl_mrc == CURLM_OK ) {
+		if (curl_multi_select ($curl_mh) != -1) {
+			do {
+				$curl_mrc = curl_multi_exec ($curl_mh, $curl_active);
+			} while ($curl_mrc == CURLM_CALL_MULTI_PERFORM );
+		}
+		if ($echo) echo colorize("$curl_active ",'YELLOW',1);
+		$nrep++;
+		if ($ntry && ($nrep > $ntry)) {
+			break;
+		}
+	}
+	$results = array ();
+	if ($use_xml) {
+		foreach ($data['handles'] as $i => $ch) {
+			$xml = simplexml_load_string (curl_multi_getcontent ($ch));
+			curl_multi_remove_handle ($curl_mh, $ch);
+			$results[$i] = array ();
+			foreach ($xml as $tag => $value) {
+				$svalue = (string) $value;
+				if (strlen ($svalue) > 0) {
+					if ($svalue[0] == '"') $results[$i][$tag] = trim ($svalue, '"');
+					else $results[$i][$tag] = (int) $svalue;
+				}
+			}
+		}
+	} else {
+		foreach ($data['handles'] as $i => $ch) {
+			$r = curl_multi_getcontent ($ch);
+			curl_multi_remove_handle ($curl_mh, $ch);
+			$results[] = $r;
+		}
+	}
+	curl_multi_close ($curl_mh);
+	return $results;
+}
+
+?>

src/php_top/response.php

+<?php
+/*
+*!***************************************************************************
+*! FILE NAME  : include_response.php
+*! DESCRIPTION: http requests response functions
+*! Copyright (C) 2016 Elphel, Inc.
+*! --------------------------------------------------------------------------
+*!  This program 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.
+*!
+*!  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*! --------------------------------------------------------------------------
+*/
+
+function get_uptime(){
+	exec('cat /proc/uptime',$output,$retval);
+	return floatval(explode(" ",trim($output[0]))[0]);
+}
+//printf("%08.2f\n",$f);
+function log_open(){
+	$GLOBALS['logFile'] = fopen ( $GLOBALS['logFilePath'], "a" );
+}
+
+/** Log message and optionally print to console */
+function log_msg($msg,         ///< message to print
+		         $mode = -1)   ///< -1 - print only short messages, 0 - never print, 1 - always print, 2 print in bold red (error), 3 - bold white, 4 - bold yellow (warning)
+{
+// do not output log when in HTTP request mode
+	$ut=get_uptime();
+	if (($mode != 0) && !array_key_exists ('REQUEST_METHOD', $_SERVER) && (($mode > 0) || (strlen ($msg) < $GLOBALS['LOG_MAX_ECHO']))) {
+		switch ($mode) {
+			case 2:
+				$emsg = colorize($msg,'RED',1); // bold red
+				break;
+			case 3:
+				$emsg = colorize($msg,'',1);    // bold white
+				break;
+			case 4 :
+				$emsg = colorize($msg, 'YELLOW', 1); // bold white
+				break;
+			default:
+				$emsg = $msg;
+		}
+		printf(colorize(sprintf("[%8.2f] autocampars: ",$ut),"GREEN",0).$emsg."\n");
+	}
+	fwrite ($GLOBALS['logFile'], sprintf("%08.2f autocampars: %s\n",$ut,$msg)); // date ("F j, Y, G:i:s")
+}
+function log_error($msg) {
+	log_msg ($msg, 2);
+	log_close ();
+	exit (1);
+}
+function log_close() {
+	log_msg ("Log file saved as " . $GLOBALS['logFilePath'], 3);
+	log_msg ("----------------------------------------------", 0);
+	fclose ($GLOBALS['logFile']);
+	unset ($GLOBALS['logFile']); // to catch errors
+}
+
+/** Closes log file, optianally responxds with XML (if in HTTP mode), exits with 0/1 */
+function respond_xml($result,$error=null,$color_mode = 3){ // default white bold
+	if (array_key_exists('REQUEST_METHOD',$_SERVER)){
+		$xml = new SimpleXMLElement("<?xml version='1.0'  standalone='yes'?><Document/>");
+		if ($result !== ""){ //"" will not be loged/output
+			if (is_string($result) && ((count($result)==0) || ($result[0] != '"'))){
+				$result = '"'.$result.'"';
+			}
+			$xml->addChild ('result',$result);
+		}
+		if ($error){
+			$xml->addChild ('error','"'.$error.'"');
+		}
+		$rslt=$xml->asXML();
+		header("Content-Type: text/xml");
+		header("Content-Length: ".strlen($rslt)."\n");
+		header("Pragma: no-cache\n");
+		printf($rslt);
+	}
+	
+	if (isset($GLOBALS['logFile'])){
+		if ($result !== ""){ //"" will not be loged/output
+			log_msg(''.$result,$color_mode);
+		}
+		if ($error){
+			log_error($error);
+		} else {
+			log_close();
+			exit (0);
+		}
+	}
+}
+
+?>