51 lines
1.4 KiB
PHP
51 lines
1.4 KiB
PHP
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<?php
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$config = yaml_parse_file("../config.yaml");
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$remoteIp = $_SERVER["REMOTE_ADDR"];
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$reverseDns = gethostbyaddr($remoteIp);
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$match = false;
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foreach ($config["allowed_sender"] as $host) {
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if (fnmatch($host, $remoteIp)) {
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echo "match $host, $remoteIp\n";
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$match = true;
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break;
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}
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$forwardResolve = gethostbyname($reverseDns);
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if ($forwardResolve != $remoteIp) {
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header(
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"X-Auth: reverse dns of $remoteIp ($reverseDns) does not resolve to $remoteIp ($forwardResolve)"
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);
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continue;
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}
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if (fnmatch($host, $reverseDns)) {
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echo "match $host, $reverseDns\n";
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$match = true;
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break;
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}
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}
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if (!$match) {
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header("HTTP/1.0 403 Forbidden");
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die("403 Forbidden");
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}
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send("$reverseDns: " . file_get_contents("php://input"), $config);
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function send($message, $config)
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{
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$target = $config["matrix"]["target"];
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$token = $config["matrix"]["token"];
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$ch = curl_init();
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curl_setopt(
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$ch,
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CURLOPT_URL,
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"https://matrix.c3re.de/_matrix/client/r0/rooms/$target/send/m.room.message/123?access_token=$token"
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);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt(
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$ch,
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CURLOPT_POSTFIELDS,
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json_encode(["msgtype" => "m.text", "body" => $message])
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);
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curl_setopt($ch, CURLOPT_POST, 1);
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curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
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curl_exec($ch);
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}
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