<?php

/*

2016, mortzu <mortzu@gmx.de>.

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are

permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this list of

conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice, this list

of conditions and the following disclaimer in the documentation and/or other materials

provided with the distribution.

* The names of its contributors may not be used to endorse or promote products derived

from this software without specific prior written permission.

* Feel free to send Club Mate to support the work.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS

OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS

AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

POSSIBILITY OF SUCH DAMAGE.

*/

// Include helper classes

require_once __DIR__ . '/Summarizer.class.php';

require_once __DIR__ . '/InfluxUploader.php';

require_once __DIR__ . '/ksort_recursive.php';

// Directory to store JSON files

$data_dir = __DIR__ . '/data';

// Directory where API token

// will be stored

$token_dir = __DIR__ . '/token';

// Initialize array for decoded JSON

$json_decoded = array();

// Optional configuration file

$config_file = __DIR__ . "/config.ini";

// Read JSON

$json = file_get_contents('php://input');

// Check for valid API key

if (!isset($_GET['token']) || !file_exists($token_dir . '/' . preg_replace('/[^\da-z]/i', '', $_GET['token']))) {

http_response_code(403);

error_log('API token missing!');

exit(2);

}

// Set default values for config

$config = array('influxdb' => array('enabled' => false));

// Load config file if exists

if (file_exists($config_file))

$config = parse_ini_file($config_file, TRUE);

// Store only if conditions given

if (empty($json)) {

http_response_code(400);

error_log('Missing JSON');

exit(2);

}

// Decode yaml or json to array

$yaml_decoded = yaml_parse($json);

if (!isset($yaml_decoded[0]['uuid'])) {

$json_decoded = json_decode($json, true);

// Check for invalid JSON

if (json_last_error() !== JSON_ERROR_NONE) {

http_response_code(400);

error_log('Invalid JSON');

exit(2);

}

} else

$json_decoded = $yaml_decoded[0];

ksort_recursive($json_decoded);

// Merged JSON array

$json_merged = array();

// Check if uuid is set in JSON

if (!isset($json_decoded['uuid'])) {

http_response_code(400);

error_log('Missing UUID in JSON (Token: ' . $_GET['token'] . ')');

exit(2);

}

// Check for valid UUID

if (!ctype_xdigit($json_decoded['uuid'])) {

http_response_code(400);

error_log('UUID (' . $json_decoded['uuid'] . ') / Token (' . $_GET['token'] . ') is not valid');

exit(2);

}

// Check for time deviation larger 1 minute

if (abs(strtotime($json_decoded['lastupdated']) - time()) > 90) {

http_response_code(400);

error_log('Node date deviation too large (UUID: ' . $json_decoded['uuid'] . ' / Token: ' . $_GET['token'] . ')');

exit(2);

}

// Overwrite lastupdated with servers time to make timestamps comparable

$json_decoded['lastupdated'] = date(DateTime::ISO8601);

// Store JSON

file_put_contents($data_dir . '/' . preg_replace('/[^\da-z]/i', '', substr($json_decoded['uuid'], 0, 30)) . '.json', json_encode($json_decoded));

// Upload to statistics database

uploadToInfluxDB($json_decoded, $config['influxdb']);

$summarizer = new Summarizer();

// Clean up old files and sum up results

foreach(glob($data_dir . '/*') as $file) {

if (basename($file) == 'merged.json' || basename($file) == 'overall.json')

continue;

if (filemtime($file) < strtotime('-8 hours')) {

unlink($file);

continue;

}

$json = json_decode(file_get_contents($file));

$json_merged[] = $json;

$summarizer->addMonitorResults($json);

}

file_put_contents($data_dir . '/merged.json', json_encode($json_merged));

$overall_state = $summarizer->getSummary();

file_put_contents($data_dir . '/overall.json', json_encode($overall_state));