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The REST API allows users to query the iQSonar results directly using the web client protocol. The results are returned in JSON format. This article is part of a series on how to make use of the Rest API.

This worked example uses PHP to produce results in HTML to display in a web browser, containing details of devices directly from the scan results. We look for the host name, the total installed RAM and the CPU type. The device name will be listed in the "device" results. For the CPU Type and the installed RAM we need to then go to the details page for the device.

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Code Block

language	php
title	Connect to the remote host

// update these for your location
$rhost = "vmiqsonar-mike-sql17host";
$aname = "admin";
$psswd = "password";

/* 
 * Use curl to fetch the results from the REST API
 */
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_VERBOSE, 1);0);		// setting the verbose flag to 1 sends all CURL output to stderr. Don't want this.
curl_setopt($ch, CURLOPT_HEADER, 1);		// we need info from the header
curl_setopt($ch, CURLOPT_USERPWD, $aname . ":" . $psswd);

curl_setopt($ch, CURLOPT_URL, "http://" .$rhost ."/API/v1/devicesapplications?fetch_size=1");

$response = curl_exec($ch);

// We want to parse the headers to find X-fetch-count
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$headers = substr($response, 0, $header_size);

// explode multiline response headers into an array of lines
$header = explode("\n",$headers);
foreach ($header as $line)
{
	// find the two headers we're specifically interested in
	list($key,$value) = explode(": ",$line);
	if (strcasecmp($key,"X-fetch-count")==0) { $max = $value; }	// total no of devices in database
	if (strcasecmp($key,"X-fetch-current-size")==0) { $count = $value; }// count of devices returned in THIS query - will stop at 200 if there are more than 200 results
}

$body = substr($response, $header_size);
$jsondata = json_decode($body, true); // recursive associative array please

By default the REST API "/api/v1/devices" page will return 200 devices at a time. We can increase or decrease this using the "fetch_size" parameter in the URL. The X-fetch-count header contains the total number of devices in the dataset. The X-fetch-current-size header shows how many were returned in this batch of results.

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Code Block

collapse

language	php
title	Completed Script		true

<?php
// PHP script to use REST API to get a list of devices from a project and return it as a table
/*
 * PHP7.1 used
 * Additional Extensions used (may need to be installed separately):
 * - curl
 * - json
 */
 
// update these for your location
$rhost = "vmiqsonar-mike-sql17host";
$aname = "admin";
$psswd = "password";

/* 
 * Use curl to fetch the results from the REST API
 */
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_USERPWD, $aname . ":" . $psswd);

curl_setopt($ch, CURLOPT_URL, "http://" .$rhost ."/API/v1/devices");

$response = curl_exec($ch);

// We want to parse the headers to find X-fetch-count
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$headers = substr($response, 0, $header_size);

// explode multiline response headers into an array of lines
$header = explode("\n",$headers);
foreach ($header as $line)
{
	// find the two headers we're specifically interested in
	list($key,$value) = explode(": ",$line);
	if (strcasecmp($key,"X-fetch-count")==0) { $max = $value; }	// total no of devices in database
	if (strcasecmp($key,"X-fetch-current-size")==0) { $count = $value; }// count of devices returned in THIS query
}


$body = substr($response, $header_size);
$jsondata = json_decode($body, true); // recursive associative array please

$output = "<html><head><title>List of Devices</title></head>\n<body>\n";
$output = "<p>Details for " . $count . " devices.</p>\n";

$output .= "<table border='1' cellpadding='1'>\n<tr><td>Hostname</td><td>RAM</td><td>CPU</td></tr>\n";
echo "$output";

$ch2 = curl_init();											
curl_setopt($ch2, CURLOPT_USERPWD, $aname . ":" . $psswd);	
curl_setopt($ch2, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch2, CURLOPT_VERBOSE, 1);
curl_setopt($ch2, CURLOPT_HEADER, 1);
$output = "";

$i=0;
while ($i != $count)
{
	
	$hostname = $jsondata[$i]["host_name"] ?? "(no hostname)";
	$self = $jsondata[$i]["self"];
	curl_setopt($ch2, CURLOPT_URL, $self);						
	$device_response = curl_exec($ch2);	
	$header_size = curl_getinfo($ch2, CURLINFO_HEADER_SIZE);
	$devicedetails =  substr($device_response, $header_size);

	$device = json_decode($devicedetails,true);
	$ram = $device['total_memory_mb'] ?? "(no ram info)";
	$cpu = $device['cpu'][0]['cpu_model'] ?? "(no cpu info)" ;
	$output .= "<tr><td>$hostname</td><td>$ram</td><td>$cpu</tr>\n";
	
	curl_close($ch2);
	$i++;
}
$output .= "</table>\n</body>";

echo $output;

?>

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