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phab/scripts/ssh/ssh-auth.php
097d0b3c4faffeature/better-testing

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ssh-auth.php
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#!/usr/bin/env php
<?php
// C4science customized
$root = dirname(dirname(dirname(__FILE__)));
require_once $root.'/scripts/__init_script__.php';
if($_SERVER['argc'] < 4) {
exit(1);
}
$argv = $_SERVER['argv'];
$key = $argv[2];
$type = $argv[3];
$public_key = PhabricatorAuthSSHPublicKey::newFromRawKey($type . ' ' . $key);
$ssh_key = id(new PhabricatorAuthSSHKeyQuery())
->setViewer(PhabricatorUser::getOmnipotentUser())
->withKeys(array($public_key))
->withIsActive(true)
->executeOne();
if($ssh_key) {
$object = $ssh_key->getObject();
if (!($object instanceof PhabricatorUser) and !($object instanceof AlmanacDevice)) {
exit(1);
}
$bin = $root.'/bin/ssh-exec';
$key_argv = array();
if ($object instanceof PhabricatorUser) {
$key_argv[] = '--phabricator-ssh-user';
$key_argv[] = $object->getUsername();
} else if ($object instanceof AlmanacDevice) {
if (!$ssh_key->getIsTrusted()) {
continue;
}
$key_argv[] = '--phabricator-ssh-device';
$key_argv[] = $object->getName();
} else {
// We don't know what sort of key this is; don't permit SSH auth.
continue;
}
$key_argv[] = '--phabricator-ssh-key';
$key_argv[] = $ssh_key->getID();
$cmd = csprintf('%s %Ls', $bin, $key_argv);
$cmd = addcslashes($cmd, '"\\');
// Strip out newlines and other nonsense from the key type and key body.
$type = $ssh_key->getKeyType();
$type = preg_replace('@[\x00-\x20]+@', '', $type);
if (!strlen($type)) {
exit(1);
}
$key = $ssh_key->getKeyBody();
$key = preg_replace('@[\x00-\x20]+@', '', $key);
if (!strlen($key)) {
exit(1);
}
$options = array(
'command="'.$cmd.'"',
'no-port-forwarding',
'no-X11-forwarding',
'no-agent-forwarding',
'no-pty',
);
$options = implode(',', $options);
echo $options.' '.$type.' '.$key."\n";
exit(0);
}
exit(1);
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