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<?php declare(strict_types=1);
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer\Repository\Vcs;
use Composer\Cache;
use Composer\Config;
use Composer\Json\JsonFile;
use Composer\Pcre\Preg;
use Composer\Util\ProcessExecutor;
use Composer\Util\Filesystem;
use Composer\Util\Url;
use Composer\Util\Svn as SvnUtil;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;
/**
* @author Jordi Boggiano <j.boggiano@seld.be>
* @author Till Klampaeckel <till@php.net>
*/
class SvnDriver extends VcsDriver
{
/** @var string */
protected $baseUrl;
/** @var array<int|string, string> Map of tag name to identifier */
protected $tags;
/** @var array<int|string, string> Map of branch name to identifier */
protected $branches;
/** @var ?string */
protected $rootIdentifier;
/** @var string|false */
protected $trunkPath = 'trunk';
/** @var string */
protected $branchesPath = 'branches';
/** @var string */
protected $tagsPath = 'tags';
/** @var string */
protected $packagePath = '';
/** @var bool */
protected $cacheCredentials = true;
/**
* @var \Composer\Util\Svn
*/
private $util;
/**
* @inheritDoc
*/
public function initialize(): void
{
$this->url = $this->baseUrl = rtrim(self::normalizeUrl($this->url), '/');
SvnUtil::cleanEnv();
if (isset($this->repoConfig['trunk-path'])) {
$this->trunkPath = $this->repoConfig['trunk-path'];
}
if (isset($this->repoConfig['branches-path'])) {
$this->branchesPath = $this->repoConfig['branches-path'];
}
if (isset($this->repoConfig['tags-path'])) {
$this->tagsPath = $this->repoConfig['tags-path'];
}
if (array_key_exists('svn-cache-credentials', $this->repoConfig)) {
$this->cacheCredentials = (bool) $this->repoConfig['svn-cache-credentials'];
}
if (isset($this->repoConfig['package-path'])) {
$this->packagePath = '/' . trim($this->repoConfig['package-path'], '/');
}
if (false !== ($pos = strrpos($this->url, '/' . $this->trunkPath))) {
$this->baseUrl = substr($this->url, 0, $pos);
}
$this->cache = new Cache($this->io, $this->config->get('cache-repo-dir').'/'.Preg::replace('{[^a-z0-9.]}i', '-', Url::sanitize($this->baseUrl)));
$this->cache->setReadOnly($this->config->get('cache-read-only'));
$this->getBranches();
$this->getTags();
}
/**
* @inheritDoc
*/
public function getRootIdentifier(): string
{
return $this->rootIdentifier ?: $this->trunkPath;
}
/**
* @inheritDoc
*/
public function getUrl(): string
{
return $this->url;
}
/**
* @inheritDoc
*/
public function getSource(string $identifier): array
{
return ['type' => 'svn', 'url' => $this->baseUrl, 'reference' => $identifier];
}
/**
* @inheritDoc
*/
public function getDist(string $identifier): ?array
{
return null;
}
/**
* @inheritDoc
*/
protected function shouldCache(string $identifier): bool
{
return $this->cache && Preg::isMatch('{@\d+$}', $identifier);
}
/**
* @inheritDoc
*/
public function getComposerInformation(string $identifier): ?array
{
if (!isset($this->infoCache[$identifier])) {
if ($this->shouldCache($identifier) && $res = $this->cache->read($identifier.'.json')) {
// old cache files had '' stored instead of null due to af3783b5f40bae32a23e353eaf0a00c9b8ce82e2, so we make sure here that we always return null or array
// and fix outdated invalid cache files
if ($res === '""') {
$res = 'null';
$this->cache->write($identifier.'.json', json_encode(null));
}
return $this->infoCache[$identifier] = JsonFile::parseJson($res);
}
try {
$composer = $this->getBaseComposerInformation($identifier);
} catch (TransportException $e) {
$message = $e->getMessage();
if (stripos($message, 'path not found') === false && stripos($message, 'svn: warning: W160013') === false) {
throw $e;
}
// remember a not-existent composer.json
$composer = null;
}
if ($this->shouldCache($identifier)) {
$this->cache->write($identifier.'.json', json_encode($composer));
}
$this->infoCache[$identifier] = $composer;
}
// old cache files had '' stored instead of null due to af3783b5f40bae32a23e353eaf0a00c9b8ce82e2, so we make sure here that we always return null or array
if (!is_array($this->infoCache[$identifier])) {
return null;
}
return $this->infoCache[$identifier];
}
public function getFileContent(string $file, string $identifier): ?string
{
$identifier = '/' . trim($identifier, '/') . '/';
Preg::match('{^(.+?)(@\d+)?/$}', $identifier, $match);
if (!empty($match[2])) {
$path = $match[1];
$rev = $match[2];
} else {
$path = $identifier;
$rev = '';
}
try {
$resource = $path.$file;
$output = $this->execute('svn cat', $this->baseUrl . $resource . $rev);
if (!trim($output)) {
return null;
}
} catch (\RuntimeException $e) {
throw new TransportException($e->getMessage());
}
return $output;
}
/**
* @inheritDoc
*/
public function getChangeDate(string $identifier): ?\DateTimeImmutable
{
$identifier = '/' . trim($identifier, '/') . '/';
Preg::match('{^(.+?)(@\d+)?/$}', $identifier, $match);
if (null !== $match[2] && null !== $match[1]) {
$path = $match[1];
$rev = $match[2];
} else {
$path = $identifier;
$rev = '';
}
$output = $this->execute('svn info', $this->baseUrl . $path . $rev);
foreach ($this->process->splitLines($output) as $line) {
if ($line && Preg::isMatchStrictGroups('{^Last Changed Date: ([^(]+)}', $line, $match)) {
return new \DateTimeImmutable($match[1], new \DateTimeZone('UTC'));
}
}
return null;
}
/**
* @inheritDoc
*/
public function getTags(): array
{
if (null === $this->tags) {
$tags = [];
if ($this->tagsPath !== false) {
$output = $this->execute('svn ls --verbose', $this->baseUrl . '/' . $this->tagsPath);
if ($output) {
$lastRev = 0;
foreach ($this->process->splitLines($output) as $line) {
$line = trim($line);
if ($line && Preg::isMatch('{^\s*(\S+).*?(\S+)\s*$}', $line, $match)) {
if (isset($match[1], $match[2])) {
if ($match[2] === './') {
$lastRev = (int) $match[1];
} else {
$tags[rtrim($match[2], '/')] = $this->buildIdentifier(
'/' . $this->tagsPath . '/' . $match[2],
max($lastRev, (int) $match[1])
);
}
}
}
}
}
}
$this->tags = $tags;
}
return $this->tags;
}
/**
* @inheritDoc
*/
public function getBranches(): array
{
if (null === $this->branches) {
$branches = [];
if (false === $this->trunkPath) {
$trunkParent = $this->baseUrl . '/';
} else {
$trunkParent = $this->baseUrl . '/' . $this->trunkPath;
}
$output = $this->execute('svn ls --verbose', $trunkParent);
if ($output) {
foreach ($this->process->splitLines($output) as $line) {
$line = trim($line);
if ($line && Preg::isMatch('{^\s*(\S+).*?(\S+)\s*$}', $line, $match)) {
if (isset($match[1], $match[2]) && $match[2] === './') {
$branches['trunk'] = $this->buildIdentifier(
'/' . $this->trunkPath,
(int) $match[1]
);
$this->rootIdentifier = $branches['trunk'];
break;
}
}
}
}
unset($output);
if ($this->branchesPath !== false) {
$output = $this->execute('svn ls --verbose', $this->baseUrl . '/' . $this->branchesPath);
if ($output) {
$lastRev = 0;
foreach ($this->process->splitLines(trim($output)) as $line) {
$line = trim($line);
if ($line && Preg::isMatch('{^\s*(\S+).*?(\S+)\s*$}', $line, $match)) {
if (isset($match[1], $match[2])) {
if ($match[2] === './') {
$lastRev = (int) $match[1];
} else {
$branches[rtrim($match[2], '/')] = $this->buildIdentifier(
'/' . $this->branchesPath . '/' . $match[2],
max($lastRev, (int) $match[1])
);
}
}
}
}
}
}
$this->branches = $branches;
}
return $this->branches;
}
/**
* @inheritDoc
*/
public static function supports(IOInterface $io, Config $config, string $url, bool $deep = false): bool
{
$url = self::normalizeUrl($url);
if (Preg::isMatch('#(^svn://|^svn\+ssh://|svn\.)#i', $url)) {
return true;
}
// proceed with deep check for local urls since they are fast to process
if (!$deep && !Filesystem::isLocalPath($url)) {
return false;
}
$process = new ProcessExecutor($io);
$exit = $process->execute(
"svn info --non-interactive -- ".ProcessExecutor::escape($url),
$ignoredOutput
);
if ($exit === 0) {
// This is definitely a Subversion repository.
return true;
}
// Subversion client 1.7 and older
if (false !== stripos($process->getErrorOutput(), 'authorization failed:')) {
// This is likely a remote Subversion repository that requires
// authentication. We will handle actual authentication later.
return true;
}
// Subversion client 1.8 and newer
if (false !== stripos($process->getErrorOutput(), 'Authentication failed')) {
// This is likely a remote Subversion or newer repository that requires
// authentication. We will handle actual authentication later.
return true;
}
return false;
}
/**
* An absolute path (leading '/') is converted to a file:// url.
*/
protected static function normalizeUrl(string $url): string
{
$fs = new Filesystem();
if ($fs->isAbsolutePath($url)) {
return 'file://' . strtr($url, '\\', '/');
}
return $url;
}
/**
* Execute an SVN command and try to fix up the process with credentials
* if necessary.
*
* @param string $command The svn command to run.
* @param string $url The SVN URL.
* @throws \RuntimeException
*/
protected function execute(string $command, string $url): string
{
if (null === $this->util) {
$this->util = new SvnUtil($this->baseUrl, $this->io, $this->config, $this->process);
$this->util->setCacheCredentials($this->cacheCredentials);
}
try {
return $this->util->execute($command, $url);
} catch (\RuntimeException $e) {
if (null === $this->util->binaryVersion()) {
throw new \RuntimeException('Failed to load '.$this->url.', svn was not found, check that it is installed and in your PATH env.' . "\n\n" . $this->process->getErrorOutput());
}
throw new \RuntimeException(
'Repository '.$this->url.' could not be processed, '.$e->getMessage()
);
}
}
/**
* Build the identifier respecting "package-path" config option
*
* @param string $baseDir The path to trunk/branch/tag
* @param int $revision The revision mark to add to identifier
*/
protected function buildIdentifier(string $baseDir, int $revision): string
{
return rtrim($baseDir, '/') . $this->packagePath . '/@' . $revision;
}
}