diff -r d77891f8915d -r 344470c6bb1c www/drop_contacts.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/www/drop_contacts.php	Wed Apr 24 16:46:45 2024 +0200
@@ -0,0 +1,79 @@
+<?php
+
+function open_socket()
+{
+    $sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
+
+    if (!($sock === false)) {
+        if (socket_connect($sock, "localhost", 6554)) {
+            socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, array('sec' => 15, 'usec' => 0));
+        } else {
+            socket_close($sock);
+        }
+    }
+    return $sock;
+}
+
+
+/**
+ * @param string $command to send to the server.
+ * @return string with the complete reply from the
+ *         server. This can be a multiline reply.
+ */
+function send_cmd($command)
+{
+    $sock = open_socket();
+    if ($sock == false) {
+        return "";
+    }
+    socket_write($sock, $command . "\r\n", 4096);
+
+    $answer = "";
+    while (1) {
+        $line = socket_read($sock, 4096);
+        if ($line === '')
+            break;
+        $answer .= $line;
+    }
+    socket_close($sock);
+
+    return $answer;
+}
+
+
+function startsWith($haystack, $needle)
+{
+    return !strncmp($haystack, $needle, strlen($needle));
+}
+
+$answer = send_cmd("DEVICES JSON");
+
+$arr = explode("\r\n", $answer);
+if (startsWith($arr[0], "212")) {
+
+    /*
+     * Build reply with only temperature sensors.
+     */
+    $sensors[] = array(
+	'uuid' => '',
+	'name' => 'Not Assigned'
+    );
+
+    $rows = json_decode($arr[1], true);
+
+    foreach($rows as $item) {
+	if ($item['direction'] == "IN_BIN") {
+	    $sensors[] = array(
+		'uuid' => $item['uuid'],
+		'name' => $item['description']." ".$item['comment']
+	    );
+	}
+    }
+    header("Content-type: application/json");
+    exit(json_encode($sensors));
+}
+
+header("Content-type: application/json");
+echo '{}';
+
+?>