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lib/Google/Auth/DefaultCredentials.pm  view on Meta::CPAN

sub make_creds {
  my ($self, %options) = @_;

  # Allow calling as class or instance method
  $self = ref $self ? $self : $self->new();

  my $json_key     = $options{json_key};
  my $json_content = $options{json_content};
  my $json_path    = $options{json_path};
  my $scopes       = $options{scope};

  my $info;

  eval {
    if ($json_key) {
      $info = $json_key;
    } elsif ($json_content) {
      $info = decode_json($json_content);
    } elsif ($json_path) {
      if (-f $json_path) {
        my $content = $self->_read_file($json_path);
        $info = decode_json($content);
      } else {
        Google::Auth::DefaultCredentialsError->throw(
          'Credential file ' . $json_path . ' does not exist');
      }
    }
  };
  if ($@) {
    Google::Auth::DefaultCredentialsError->throw(
      'Failed to parse credential JSON: ' . $@);
  }

  if ($info) {
    my $type = $info->{type};
    if (!$type) {
      Google::Auth::DefaultCredentialsError->throw(
        'The json is missing the type field');
    }

    my $creds_class = $self->_determine_class_for_type($type);
    if ($creds_class->can('make_creds')) {
      return $creds_class->make_creds(
        json_key => $info,
        scope    => $scopes,
        %options
      );
    }
    return $creds_class->new(
      json_key => $info,
      scope    => $scopes,
      %options
    );
  }

  # If no explicit json info was provided, fallback to checking environment variables
  my $env = $self->environment;
  if ($ENV{GOOGLE_PRIVATE_KEY} && $ENV{GOOGLE_CLIENT_EMAIL}) {
    require Google::Auth::ServiceAccountCredentials;
    return Google::Auth::ServiceAccountCredentials->new(
      private_key  => $ENV{GOOGLE_PRIVATE_KEY},
      client_email => $ENV{GOOGLE_CLIENT_EMAIL},
      scope        => $scopes,
      %options
    );
  }

  return;
}

sub from_env {
  my ($self, $scopes, %options) = @_;
  $self = ref $self ? $self : $self->new();

  my $credentials_path =
    $ENV{GOOGLE_APPLICATION_CREDENTIALS} || $self->environment->CREDENTIALS;

  if ($credentials_path) {
    return $self->make_creds(
      json_path => $credentials_path,
      scope     => $scopes,
      %options
    );
  }
  return;
}

sub from_well_known_path {
  my ($self, $scopes, %options) = @_;
  $self = ref $self ? $self : $self->new();

  my $env  = $self->environment;
  my $home = $ENV{HOME};
  if ($^O eq 'MSWin32') {
    $home = $ENV{APPDATA};
  }

  return unless $home;

  my $well_known_file;
  if ($^O eq 'MSWin32') {
    $well_known_file = File::Spec->catfile($home, 'gcloud',
      'application_default_credentials.json');
  } else {
    my $config_dir = $env->CLOUD_SDK_CONFIG_DIR
      || File::Spec->catdir($home, '.config');
    $well_known_file = File::Spec->catfile($config_dir, 'gcloud',
      'application_default_credentials.json');
  }

  if (-f $well_known_file) {
    return $self->make_creds(
      json_path => $well_known_file,
      scope     => $scopes,
      %options
    );
  }
  return;
}

sub from_system_default_path {