SqliteUtils.php
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SqliteUtils.php
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	<?php

	namespace MediaWiki\Installer\Task;

	use MediaWiki\Status\Status;

	/**
	* @internal For use by the installer
	*/
	class SqliteUtils {
	/**
	* Check if the data directory is writable or can be created
	* @param string $dir Path to the data directory
	* @return Status Return fatal Status if $dir un-writable or no permission to create a directory
	*/
	public function checkDataDir( $dir ): Status {
	if ( is_dir( $dir ) ) {
	if ( !is_readable( $dir ) \|\| !is_writable( $dir ) ) {
	return Status::newFatal( 'config-sqlite-dir-unwritable', $dir );
	}
	} elseif ( !is_writable( dirname( $dir ) ) ) {
	// Check the parent directory if $dir not exists
	$webserverGroup = $this->maybeGetWebserverPrimaryGroup();
	if ( $webserverGroup !== null ) {
	return Status::newFatal(
	'config-sqlite-parent-unwritable-group',
	$dir, dirname( $dir ), basename( $dir ),
	$webserverGroup
	);
	}

	return Status::newFatal(
	'config-sqlite-parent-unwritable-nogroup',
	$dir, dirname( $dir ), basename( $dir )
	);
	}
	return Status::newGood();
	}

	/**
	* On POSIX systems return the primary group of the webserver we're running under.
	* On other systems just returns null.
	*
	* @return string\|null
	*/
	private function maybeGetWebserverPrimaryGroup() {
	if ( !function_exists( 'posix_getegid' ) \|\| !function_exists( 'posix_getpwuid' ) ) {
	# I don't know this, this isn't UNIX.
	return null;
	}

	# posix_getegid() not getmygid() because we want the group of the webserver,
	# not whoever owns the current script.
	$gid = posix_getegid();
	return posix_getpwuid( $gid )['name'] ?? null;
	}

	}