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   1  <?php
   2  
   3  abstract class PassphraseAbstractKey extends Phobject {
   4  
   5    private $credential;
   6  
   7    protected function requireCredential() {
   8      if (!$this->credential) {
   9        throw new Exception(pht('Credential is required!'));
  10      }
  11      return $this->credential;
  12    }
  13  
  14    private function loadCredential(
  15      $phid,
  16      PhabricatorUser $viewer) {
  17  
  18      $credential = id(new PassphraseCredentialQuery())
  19        ->setViewer($viewer)
  20        ->withPHIDs(array($phid))
  21        ->needSecrets(true)
  22        ->executeOne();
  23  
  24      if (!$credential) {
  25        throw new Exception(pht('Failed to load credential "%s"!', $phid));
  26      }
  27  
  28      return $credential;
  29    }
  30  
  31    private function validateCredential(
  32      PassphraseCredential $credential,
  33      $provides_type) {
  34  
  35      $type = $credential->getCredentialTypeImplementation();
  36  
  37      if (!$type) {
  38        throw new Exception(
  39          pht(
  40            'Credential "%s" is of unknown type "%s"!',
  41            'K'.$credential->getID(),
  42            $credential->getCredentialType()));
  43      }
  44  
  45      if ($type->getProvidesType() !== $provides_type) {
  46        throw new Exception(
  47          pht(
  48            'Credential "%s" must provide "%s", but provides "%s"!',
  49            'K'.$credential->getID(),
  50            $provides_type,
  51            $type->getProvidesType()));
  52      }
  53    }
  54  
  55    protected function loadAndValidateFromPHID(
  56      $phid,
  57      PhabricatorUser $viewer,
  58      $type) {
  59  
  60      $credential = $this->loadCredential($phid, $viewer);
  61  
  62      $this->validateCredential($credential, $type);
  63  
  64      $this->credential = $credential;
  65  
  66      return $this;
  67    }
  68  
  69    public function getUsernameEnvelope() {
  70      $credential = $this->requireCredential();
  71      return new PhutilOpaqueEnvelope($credential->getUsername());
  72    }
  73  
  74  }