PassphraseCredentialPublicController.php
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	<?php

	final class PassphraseCredentialPublicController
	extends PassphraseController {

	public function handleRequest(AphrontRequest $request) {
	$viewer = $request->getViewer();
	$id = $request->getURIData('id');

	$credential = id(new PassphraseCredentialQuery())
	->setViewer($viewer)
	->withIDs(array($id))
	->requireCapabilities(
	array(
	PhabricatorPolicyCapability::CAN_VIEW,
	))
	->executeOne();
	if (!$credential) {
	return new Aphront404Response();
	}

	$type = PassphraseCredentialType::getTypeByConstant(
	$credential->getCredentialType());
	if (!$type) {
	throw new Exception(pht('Credential has invalid type "%s"!', $type));
	}

	if (!$type->hasPublicKey()) {
	throw new Exception(pht('Credential has no public key!'));
	}

	$view_uri = '/'.$credential->getMonogram();

	$public_key = $type->getPublicKey($viewer, $credential);

	$body = id(new PHUIFormLayoutView())
	->appendChild(
	id(new AphrontFormTextAreaControl())
	->setLabel(pht('Public Key'))
	->setReadOnly(true)
	->setValue($public_key));

	return $this->newDialog()
	->setWidth(AphrontDialogView::WIDTH_FORM)
	->setTitle(pht('Public Key (%s)', $credential->getMonogram()))
	->appendChild($body)
	->addCancelButton($view_uri, pht('Done'));

	}

	}