PHP script to control multiple AGHome instances

[Bluscream]

I wanted to have a bit more redundance, so i am running AGHome on 2 devices and set my router to use both of them.

I also wanted to use rewrites as some kind of static IP replacement because static IPs don't always work like i want them to.

So i needed to come up with some script that will let me update rewrite rules on multiple AGHome instances, and here it is (in PHP, sorry)

It requires the AGHome PHP library that you can generate yourself with https://github.com/AdguardTeam/AdGuardHome/blob/master/openapi/openapi.yaml and https://app.swaggerhub.com/apis/bluscream3/adguardhome/0.107 or just get mine at https://github.com/Bluscream/adguardhome-php

<?php
require_once(__DIR__ . '/adguardhome-php/vendor/autoload.php');

$servers = [
    "http://192.168.2.2:3003/control", "http://192.168.2.39:3003/control"
    //"http://192.168.2.3:3003/control", //"http://192.168.2.38:3003/control",
];
$client = new GuzzleHttp\Client();
$apiInstances = [];
foreach ($servers as $server_ip) {
    $config = new Swagger\Client\Configuration();
    $config->setHost($server_ip);
    $apiInstances[] = new Swagger\Client\Api\RewriteApi($client, $config);
}
echo("<br>Instances: ");
foreach ($apiInstances as $apiInstance) {
    echo($apiInstance->getConfig()->getHost() . ", ");
}

function rewriteDomains($apiInstances, $rewrite_domains, $rewrite_ips = []) {
    echo("<br>Rewriting " . count($rewrite_domains) . " domains with " . count($rewrite_ips) . " IPs on " . count($apiInstances) . " apiInstances");
    foreach ($apiInstances as $apiInstance) {
        $rewritten_domains = $apiInstance->rewriteList();
        echo("<br>Got list of " . count($rewritten_domains) . " rewrite entries from apiInstance: " . $apiInstance->getConfig()->getHost());
        foreach ($rewrite_domains as $rewrite_domain) {
            foreach ($rewritten_domains as $rewritten_domain) {
                $rewritten_domain_dict = json_decode(json_encode($rewritten_domain), true);
                if (strcasecmp($rewritten_domain_dict["domain"], $rewrite_domain) == 0) {
                    echo("<br>Domain " . $rewrite_domain . " found as " . json_encode($rewritten_domain_dict). " , deleting...");
                    try {
                        $apiInstance->rewriteDelete($rewritten_domain);
                    } catch (Exception $e) {
                        echo '<br>Exception when calling RewriteApi->rewriteDelete on ',$apiInstance->getConfig()->getHost(),': ',$e->getMessage();
                    }
                }
            }
            foreach($rewrite_ips as $ip) {
                try {
                    echo("<br>Rewriting domain: " . $rewrite_domain . " with ip: " . $ip);
                    $apiInstance->rewriteAdd(new \Swagger\Client\Model\RewriteEntry($rewrite_domain,$ip));
                } catch (Exception $e) {
                    echo '<br>Exception when calling RewriteApi->rewriteAdd on ',$apiInstance->getConfig()->getHost(),': ',$e->getMessage();
                }
            }
        }
    }
}

function getAllRewrites() {
    $rewrites = array();
    foreach ($apiInstances as $apiInstance) {
        $rewrites[$apiInstance->getConfig()->getHost()] = $apiInstance->rewriteList()[0];
    }
    return $rewrites;
}

foreach ($apiInstances as $apiInstance) {
    echo($apiInstance->getConfig()->getHost() . ", ");
}

$domains = isset($_GET["domains"]) ? explode(",", $_GET["domains"] ) : null;
$ips = isset($_GET["ips"]) ? explode(",", $_GET["ips"] ) : [];
echo("<br>Domains: " . json_encode($domains));
echo("<br> IPs: " . json_encode($ips));
if (isset($domains) && isset($ips)) {
    rewriteDomains($apiInstances, $domains, $ips);
} else {
    $rewritten_domains = getAllRewrites();
    print_r($rewritten_domains);
}

?>