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<?php
declare(strict_types=1);
require_once __DIR__ . '/yamn_config.php';
/** Encode a plaintext message with the local YAMN encoder binary. */
function encodeYamnMessage(array $request): array
{
$encoder = yamnConfig('YAMN_ENCODER', '/usr/local/bin/yamn-encode');
$keyring = yamnConfig('YAMN_PUBRING', '/opt/yamn-master/pubring.mix');
if (!is_executable($encoder)) {
return ['success' => false, 'error' => 'YAMN encoder is not available'];
}
$request['public_keyring'] = $keyring;
try {
$input = json_encode($request, JSON_THROW_ON_ERROR);
} catch (JsonException $exception) {
return ['success' => false, 'error' => 'Unable to encode YAMN request'];
}
$descriptors = [0 => ['pipe', 'r'], 1 => ['pipe', 'w'], 2 => ['pipe', 'w']];
$process = proc_open([$encoder], $descriptors, $pipes);
if (!is_resource($process)) {
return ['success' => false, 'error' => 'Unable to start YAMN encoder'];
}
fwrite($pipes[0], $input);
fclose($pipes[0]);
$stdout = stream_get_contents($pipes[1]);
fclose($pipes[1]);
$stderr = stream_get_contents($pipes[2]);
fclose($pipes[2]);
$status = proc_close($process);
$response = json_decode($stdout, true);
if ($status !== 0 || !is_array($response) || ($response['success'] ?? false) !== true) {
return ['success' => false, 'error' => 'YAMN encoding failed'];
}
if (!isset($response['entry_address'], $response['envelope']) || !is_string($response['envelope'])) {
return ['success' => false, 'error' => 'Invalid response from YAMN encoder'];
}
return ['success' => true, 'entry_address' => $response['entry_address'], 'envelope' => $response['envelope']];
}
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