/**
* Get a block from a random mirror
*
* @param string $pkg_name
* @param string $publickey
* @param string $secretkey
*/
private function getBlockForPackage($pkg_name, $publickey = null, $secretkey = null)
{
if (empty($this->http)) {
$this->setup();
}
$request_uri = $this->basepath . self::$api['package']['block'] . \urlencode($pkg_name);
// Make the first request. Free packages will return here.
if (empty($publickey)) {
$postresp = $this->http->post($request_uri);
$initial = \json_decode($postresp, true);
} else {
$initial = \json_decode($this->http->post($request_uri, ['publickey' => $publickey]), true);
}
if (!empty($initial['block'])) {
return $initial['block'];
}
if (empty($publickey) || empty($secretkey)) {
return false;
}
// Challenge-response below
$solution = Base\Utilities::challengeResponse($initial['public_key'], $initial['nonce'], $initial['challenge'], $secretkey);
// Second HTTP request
$solved = \json_decode($this->http->post($request_uri, ['publickey' => $publickey, 'response' => \base64_encode($solution)], true));
if (!empty($initial['block'])) {
return $solved['block'];
}
}
/**
* Download a package
*
* @param string $package Package name
* @param string $publickey Public key (base64 encoded)
* @param string $secretkey Secret key (base64 encoded)
* @param boolean $echo Display verbose information?
*
* @return boolean|string
*/
public function downloadFile($package, $publickey = null, $secretkey = null, $echo = false)
{
$request_uri = $this->basepath . self::$api['package']['download'] . \urlencode($package);
if (empty($publickey)) {
$initial = $this->http->post($request_uri);
} else {
$initial = $this->http->post($request_uri, ['publickey' => $publickey]);
}
// Let's decode the challenge
$chal = \json_decode($initial, true);
// Is this a free package? If so, we download it immediately!
if (!empty($chal['url'])) {
$file = \file_get_contents($chal['url']);
$filename = $this->saveTemp($file);
if ($echo) {
echo 'Saving temporary file to ', $filename, "\n";
}
return $filename;
}
// Challenge response authentication:
if (empty($publickey) || empty($secretkey)) {
if ($echo) {
echo 'No license key.', "\n\n";
}
return false;
}
if (!empty($chal['error'])) {
if ($echo) {
echo 'Server Response:', "\n", $chal['error'], "\n\n";
}
return false;
}
if (empty($chal['challenge']) || empty($chal['nonce']) || empty($chal['publickey'])) {
if ($echo) {
echo $initial;
}
return false;
}
// We use base64 for JSON transport
$solution = Base\Utilities::challengeResponse($chal['public_key'], $chal['nonce'], $chal['challenge'], $secretkey);
// Second HTTP request
$solved = $this->http->post($request_uri, ['publickey' => $publickey, 'response' => \base64_encode($solution)]);
// Was it JSON?
if ($this->http->lastHeader('Content-Type') !== 'application/json') {
$filename = $this->saveTemp($solved);
if ($echo) {
echo 'Saving temporary file to ', $filename, "\n";
}
return $filename;
}
// If we are still here, we had an error.
$srv = \json_decode($solved, true);
if (!empty($srv['error'])) {
if ($echo) {
echo 'Server Response:', "\n", $srv['error'], "\n\n";
}
return false;
}
if ($echo) {
echo $solved, "\n";
}
return false;
}
