wip

Network.php

@@ -0,0 +1,73 @@
+<?php
+
+function binary_mask(int $cidr_mask) {
+    return bindec(str_pad(str_repeat('1', $cidr_mask), 32, '0'));
+}
+
+function cidr_mask(int $binary_mask) {
+    return substr_count(decbin($binary_mask), '1');
+}
+
+
+Class Network {
+    public int $address;
+    public int $mask;
+    public string $name = "";
+
+    public function __construct(int $address, int $cidr_mask, string $name = "", string $description = "") {
+        $this->mask = binary_mask($cidr_mask);
+        $this->address = $address & $this->mask;
+        $this->name = $name;
+    }
+
+    public function __toString(): string {
+        return long2ip($this->address) . " / " . cidr_mask($this->mask);
+    }
+
+    public function __debugInfo(): array {
+        return [
+            "name" => $this->name,
+            "ip_adress" => long2ip($this->address),
+            "cidr_mask" => cidr_mask($this->mask),
+        ];
+    }
+
+    public function contains(Network $other) {
+        return ($other->address & $this->mask) == $this->address;
+    }
+}
+
+$networks = [
+    new Network(ip2long("10.75.0.0"), 16, "Paris"),
+    new Network(ip2long("10.94.0.0"), 16, "Val-de-Marne"),
+    new Network(ip2long("10.232.0.0"), 16, "DiRIF"),
+    new Network(ip2long("10.75.128.0"), 22, "Miollis"),
+    new Network(ip2long("10.75.128.0"), 24, "Serveurs"),
+    new Network(ip2long("10.75.129.0"), 24, "Data"),
+    new Network(ip2long("10.75.8.0"), 22, "Crillon"),
+    new Network(ip2long("10.94.8.0"), 22, "Créteil Archives"),
+    new Network(ip2long("10.232.160.0"), 22, "Créteil l'Echat"),
+];
+
+$subnetworks = [];
+foreach ($networks as $network) {
+    $subnetworks[] = ["network" => $network, "subnetworks" => []];
+}
+
+usort($subnetworks, function($a, $b) {
+    return $b["network"]->mask <=> $a["network"]->mask;
+});
+
+$networks_tree = [];
+
+while (count($subnetworks)) {
+    ["network" => $network1, "subnetworks" => $subnetworks1] = array_shift($subnetworks);
+    foreach($subnetworks as ["network" => $network2, "subnetworks" => &$subnetworks2]) {
+        if ($network2->contains($network1)) {
+            $subnetworks2[] = ["network" => $network1, "subnetworks" => $subnetworks1];
+            continue 2;
+        }
+    }
+    $networks_tree[] = ["network" => $network1, "subnetworks" => $subnetworks1];
+}
+var_dump($networks_tree);