mirror of
https://github.com/joomla-extensions/patchtester.git
synced 2024-12-26 12:27:36 +00:00
346 lines
8.1 KiB
PHP
346 lines
8.1 KiB
PHP
<?php
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/**
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* @package PatchTester
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*
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* @copyright Copyright (C) 2011 - 2012 Ian MacLennan, Copyright (C) 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later
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*/
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defined('_JEXEC') or die;
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/**
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* Methods supporting pull requests.
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*
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* @package PatchTester
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* @since 1.0
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*/
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class PatchtesterModelPull extends JModelLegacy
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{
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/**
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* @var JHttp
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* @since 2.0
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*/
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protected $transport;
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/**
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* Github object
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*
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* @var PTGithub
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* @since 2.0
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*/
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protected $github;
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/**
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* Object containing the rate limit data
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*
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* @var object
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* @since 2.0
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*/
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protected $rate;
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/**
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* Constructor
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*
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* @param array $config An array of configuration options (name, state, dbo, table_path, ignore_request).
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*
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* @since 2.0
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*/
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public function __construct($config = array())
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{
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parent::__construct($config);
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// Set up the JHttp object
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$options = new JRegistry;
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$options->set('userAgent', 'JPatchTester/1.0');
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$options->set('timeout', 120);
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$this->transport = JHttpFactory::getHttp($options, 'curl');
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// Set up the Github object
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$params = JComponentHelper::getParams('com_patchtester');
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$options = new JRegistry;
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// Set the username and password if set in the params
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if ($params->get('gh_user', '') && $params->get('gh_password'))
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{
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$options->set('api.username', $params->get('gh_user', ''));
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$options->set('api.password', $params->get('gh_password', ''));
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}
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$this->github = new PTGithub($options);
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// Store the rate data for reuse during this request cycle
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$this->rate = $this->github->account->getRateLimit()->rate;
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}
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/**
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* Method to auto-populate the model state.
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*
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* @return void
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*
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* @note Calling getState() in this method will result in recursion.
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* @since 1.0
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*/
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protected function populateState()
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{
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// Load the parameters.
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$params = JComponentHelper::getParams('com_patchtester');
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$this->setState('params', $params);
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$this->setState('github_user', $params->get('org', 'joomla'));
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$this->setState('github_repo', $params->get('repo', 'joomla-cms'));
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parent::populateState();
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}
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/**
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* Method to parse a patch and extract the affected files
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*
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* @param string $patch Patch file to parse
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*
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* @return array Array of files within a patch
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*
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* @since 1.0
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*/
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protected function parsePatch($patch)
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{
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$state = 0;
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$files = array();
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$lines = explode("\n", $patch);
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foreach ($lines AS $line)
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{
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switch ($state)
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{
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case 0:
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if (strpos($line, 'diff --git') === 0)
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{
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$state = 1;
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}
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$file = new stdClass;
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$file->action = 'modified';
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break;
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case 1:
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if (strpos($line, 'index') === 0)
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{
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$file->index = substr($line, 6);
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}
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if (strpos($line, '---') === 0)
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{
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$file->old = substr($line, 6);
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}
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if (strpos($line, '+++') === 0)
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{
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$file->new = substr($line, 6);
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}
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if (strpos($line, 'new file mode') === 0)
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{
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$file->action = 'added';
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}
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if (strpos($line, 'deleted file mode') === 0)
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{
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$file->action = 'deleted';
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}
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if (strpos($line, '@@') === 0)
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{
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$state = 0;
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$files[] = $file;
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}
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break;
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}
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}
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return $files;
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}
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/**
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* Patches the code with the supplied pull request
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*
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* @param integer $id ID of the pull request to apply
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*
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* @return boolean
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*
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* @since 1.0
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* @throws Exception
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*/
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public function apply($id)
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{
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// Only act if there are API hits remaining
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if ($this->rate->remaining > 0)
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{
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$pull = $this->github->pulls->get($this->getState('github_user'), $this->getState('github_repo'), $id);
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if (is_null($pull->head->repo))
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{
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throw new Exception(JText::_('COM_PATCHTESTER_REPO_IS_GONE'));
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}
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$patch = $this->transport->get($pull->diff_url)->body;
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$files = $this->parsePatch($patch);
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foreach ($files as $file)
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{
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if ($file->action == 'deleted' && !file_exists(JPATH_ROOT . '/' . $file->old))
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{
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throw new Exception(sprintf(JText::_('COM_PATCHTESTER_FILE_DELETED_DOES_NOT_EXIST_S'), $file->old));
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}
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if ($file->action == 'added' || $file->action == 'modified')
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{
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// If the backup file already exists, we can't apply the patch
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if (file_exists(JPATH_COMPONENT . '/backups/' . md5($file->new) . '.txt'))
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{
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throw new Exception(sprintf(JText::_('COM_PATCHTESTER_CONFLICT_S'), $file->new));
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}
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if ($file->action == 'modified' && !file_exists(JPATH_ROOT . '/' . $file->old))
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{
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throw new Exception(sprintf(JText::_('COM_PATCHTESTER_FILE_MODIFIED_DOES_NOT_EXIST_S'), $file->old));
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}
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$url = 'https://raw.github.com/' . $pull->head->user->login . '/' . $pull->head->repo->name . '/' . $pull->head->ref . '/' . $file->new;
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$file->body = $this->transport->get($url)->body;
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}
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}
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jimport('joomla.filesystem.file');
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// At this point, we have ensured that we have all the new files and there are no conflicts
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foreach ($files as $file)
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{
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// We only create a backup if the file already exists
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if ($file->action == 'deleted' || (file_exists(JPATH_ROOT . '/' . $file->new) && $file->action == 'modified'))
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{
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if (!JFile::copy(JPath::clean(JPATH_ROOT . '/' . $file->old), JPATH_COMPONENT . '/backups/' . md5($file->old) . '.txt'))
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{
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throw new Exception(
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sprintf('Can not copy file %s to %s', JPATH_ROOT . '/' . $file->old, JPATH_COMPONENT . '/backups/' . md5($file->old) . '.txt')
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);
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}
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}
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switch ($file->action)
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{
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case 'modified':
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case 'added':
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if (!JFile::write(JPath::clean(JPATH_ROOT . '/' . $file->new), $file->body))
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{
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throw new Exception(sprintf('Can not write the file: %s', JPATH_ROOT . '/' . $file->new));
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}
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break;
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case 'deleted':
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if (!JFile::delete(JPATH::clean(JPATH_ROOT . '/' . $file->old)))
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{
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throw new Exception(sprintf('Can not delete the file: %s', JPATH_ROOT . '/' . $file->old));
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}
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break;
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}
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}
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$table = JTable::getInstance('tests', 'PatchTesterTable');
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$table->pull_id = $pull->number;
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$table->data = json_encode($files);
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$table->patched_by = JFactory::getUser()->id;
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$table->applied = 1;
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$table->applied_version = JVERSION;
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if (!$table->store())
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{
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throw new Exception($table->getError());
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}
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}
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else
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{
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throw new Exception(JText::sprintf('COM_PATCHTESTER_API_LIMIT_ACTION', JFactory::getDate($this->rate->reset)));
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}
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return true;
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}
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/**
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* Reverts the specified pull request
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*
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* @param integer $id ID of the pull request to Reverts
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*
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* @return boolean
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*
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* @since 1.0
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* @throws Exception
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*/
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public function revert($id)
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{
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$table = JTable::getInstance('tests', 'PatchTesterTable');
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$table->load($id);
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// We don't want to restore files from an older version
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if ($table->applied_version != JVERSION)
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{
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$table->delete();
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return $this;
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}
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$files = json_decode($table->data);
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if (!$files)
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{
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throw new Exception(sprintf(JText::_('%s - Error retrieving table data (%s)'), __METHOD__, htmlentities($table->data)));
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}
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jimport('joomla.filesystem.file');
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foreach ($files as $file)
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{
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switch ($file->action)
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{
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case 'deleted':
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case 'modified':
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if (!JFile::copy(JPATH_COMPONENT . '/backups/' . md5($file->old) . '.txt', JPATH_ROOT . '/' . $file->old))
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{
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throw new Exception(
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sprintf(
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JText::_('Can not copy file %s to %s'),
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JPATH_COMPONENT . '/backups/' . md5($file->old) . '.txt',
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JPATH_ROOT . '/' . $file->old
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)
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);
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}
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if (!JFile::delete(JPATH_COMPONENT . '/backups/' . md5($file->old) . '.txt'))
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{
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throw new Exception(sprintf(JText::_('Can not delete the file: %s'), JPATH_COMPONENT . '/backups/' . md5($file->old) . '.txt'));
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}
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break;
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case 'added':
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if (!JFile::delete(JPath::clean(JPATH_ROOT . '/' . $file->new)))
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{
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throw new Exception(sprintf(JText::_('Can not delete the file: %s'), JPATH_ROOT . '/' . $file->new));
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}
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break;
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}
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}
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$table->delete();
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return true;
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}
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}
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