DiffusionSSHWorkflow.php
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DiffusionSSHWorkflow.php
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	<?php

	abstract class DiffusionSSHWorkflow extends PhabricatorSSHWorkflow {

	private $args;

	public function getArgs() {
	return $this->args;
	}

	abstract protected function isReadOnly();
	abstract protected function getRequestPath();
	abstract protected function executeRepositoryOperations(
	PhabricatorRepository $repository);

	protected function writeError($message) {
	$this->getErrorChannel()->write($message);
	return $this;
	}

	final public function execute(PhutilArgumentParser $args) {
	$this->args = $args;

	try {
	$repository = $this->loadRepository();
	return $this->executeRepositoryOperations($repository);
	} catch (Exception $ex) {
	$this->writeError(get_class($ex).': '.$ex->getMessage());
	return 1;
	}
	}

	private function loadRepository() {
	$viewer = $this->getUser();
	$path = $this->getRequestPath();

	$regex = '@^/?diffusion/(?P<callsign>[A-Z]+)(?:/\|$)@';
	$matches = null;
	if (!preg_match($regex, $path, $matches)) {
	throw new Exception(
	pht(
	'Unrecognized repository path "%s". Expected a path like '.
	'"%s".',
	$path,
	"/diffusion/X/"));
	}

	$callsign = $matches[1];
	$repository = id(new PhabricatorRepositoryQuery())
	->setViewer($viewer)
	->withCallsigns(array($callsign))
	->executeOne();

	if (!$repository) {
	throw new Exception(
	pht('No repository "%s" exists!', $callsign));
	}

	$is_push = !$this->isReadOnly();

	switch ($repository->getServeOverSSH()) {
	case PhabricatorRepository::SERVE_READONLY:
	if ($is_push) {
	throw new Exception(
	pht('This repository is read-only over SSH.'));
	}
	break;
	case PhabricatorRepository::SERVE_READWRITE:
	if ($is_push) {
	$can_push = PhabricatorPolicyFilter::hasCapability(
	$viewer,
	$repository,
	DiffusionCapabilityPush::CAPABILITY);
	if (!$can_push) {
	throw new Exception(
	pht('You do not have permission to push to this repository.'));
	}
	}
	break;
	case PhabricatorRepository::SERVE_OFF:
	default:
	throw new Exception(
	pht('This repository is not available over SSH.'));
	}

	return $repository;
	}

	}

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