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PhabricatorAuthManagementCachePKCS8Workflow.php
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Fri, Aug 30, 16:32

PhabricatorAuthManagementCachePKCS8Workflow.php
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<?php
final class PhabricatorAuthManagementCachePKCS8Workflow
extends PhabricatorAuthManagementWorkflow {
protected function didConstruct() {
$this
->setName('cache-pkcs8')
->setExamples('**cache-pkcs8** --public __keyfile__ --pkcs8 __keyfile__')
->setSynopsis(
pht(
'Cache the PKCS8 format of a public key. When developing on OSX, '.
'this can be used to work around issues with ssh-keygen. Use '.
'`ssh-keygen -e -m PKCS8 -f key.pub` to generate a PKCS8 key to '.
'feed to this command.'))
->setArguments(
array(
array(
'name' => 'public',
'param' => 'keyfile',
'help' => pht('Path to public keyfile.'),
),
array(
'name' => 'pkcs8',
'param' => 'keyfile',
'help' => pht('Path to corresponding PKCS8 key.'),
),
));
}
public function execute(PhutilArgumentParser $args) {
$console = PhutilConsole::getConsole();
$public_keyfile = $args->getArg('public');
if (!strlen($public_keyfile)) {
throw new PhutilArgumentUsageException(
pht(
'You must specify the path to a public keyfile with --public.'));
}
if (!Filesystem::pathExists($public_keyfile)) {
throw new PhutilArgumentUsageException(
pht(
'Specified public keyfile "%s" does not exist!',
$public_keyfile));
}
$public_key = Filesystem::readFile($public_keyfile);
$pkcs8_keyfile = $args->getArg('pkcs8');
if (!strlen($pkcs8_keyfile)) {
throw new PhutilArgumentUsageException(
pht(
'You must specify the path to a pkcs8 keyfile with --pkc8s.'));
}
if (!Filesystem::pathExists($pkcs8_keyfile)) {
throw new PhutilArgumentUsageException(
pht(
'Specified pkcs8 keyfile "%s" does not exist!',
$pkcs8_keyfile));
}
$pkcs8_key = Filesystem::readFile($pkcs8_keyfile);
$warning = pht(
'Adding a PKCS8 keyfile to the cache can be very dangerous. If the '.
'PKCS8 file really encodes a different public key than the one '.
'specified, an attacker could use it to gain unautorized access.'.
"\n\n".
'Generally, you should use this option only in a development '.
'environment where ssh-keygen is broken and it is inconvenient to '.
'fix it, and only if you are certain you understand the risks. You '.
'should never cache a PKCS8 file you did not generate yourself.');
$console->writeOut(
"%s\n",
phutil_console_wrap($warning));
$prompt = pht('Really trust this PKCS8 keyfile?');
if (!phutil_console_confirm($prompt)) {
throw new PhutilArgumentUsageException(
pht('Aborted workflow.'));
}
$key = PhabricatorAuthSSHPublicKey::newFromRawKey($public_key);
$key->forcePopulatePKCS8Cache($pkcs8_key);
$console->writeOut(
"%s\n",
pht('Cached PKCS8 key for public key.'));
return 0;
}
}

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