friendica_2021-01/mod/modexp.php
Roland Häder 6a8a36f12d More usage of dbm::is_result($r) instead of count($r):
- count() returns very different results and never a boolean (not even false on
  error condition).
- therefore you should NOT use it in boolean expressions. This still *can* be
  done in PHP because of its lazyness. But it is discouraged if it comes to
  more clean code.

Signed-off-by: Roland Häder <roland@mxchange.org>
2016-12-13 10:44:13 +01:00

35 lines
652 B
PHP

<?php
require_once('library/asn1.php');
function modexp_init(&$a) {
if($a->argc != 2)
killme();
$nick = $a->argv[1];
$r = q("SELECT `spubkey` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
dbesc($nick)
);
if(! dbm::is_result($r))
killme();
$lines = explode("\n",$r[0]['spubkey']);
unset($lines[0]);
unset($lines[count($lines)]);
$x = base64_decode(implode('',$lines));
$r = ASN_BASE::parseASNString($x);
$m = $r[0]->asnData[1]->asnData[0]->asnData[0]->asnData;
$e = $r[0]->asnData[1]->asnData[0]->asnData[1]->asnData;
header("Content-type: application/magic-public-key");
echo 'RSA' . '.' . $m . '.' . $e ;
killme();
}