Files
BookStack/app/Console/Commands/InstallModuleCommand.php

306 lines
10 KiB
PHP

<?php
namespace BookStack\Console\Commands;
use BookStack\Http\HttpRequestService;
use BookStack\Theming\ThemeModule;
use BookStack\Theming\ThemeModuleException;
use BookStack\Theming\ThemeModuleManager;
use BookStack\Theming\ThemeModuleZip;
use GuzzleHttp\Psr7\Request;
use Illuminate\Console\Command;
use Illuminate\Support\Str;
class InstallModuleCommand extends Command
{
/**
* The name and signature of the console command.
*
* @var string
*/
protected $signature = 'bookstack:install-module
{location : The URL or path of the module file}';
/**
* The console command description.
*
* @var string
*/
protected $description = 'Install a module to the currently configured theme';
protected array $cleanupActions = [];
/**
* Execute the console command.
*/
public function handle(): int
{
$location = $this->argument('location');
// Get the ZIP file containing the module files
$zipPath = $this->getPathToZip($location);
if (!$zipPath) {
$this->cleanup();
return 1;
}
// Validate module zip file (metadata, size, etc...) and get module instance
$zip = new ThemeModuleZip($zipPath);
$themeModule = $this->validateAndGetModuleInfoFromZip($zip);
if (!$themeModule) {
$this->cleanup();
return 1;
}
// Get the theme folder in use, attempting to create one if no active theme in use
$themeFolder = $this->getThemeFolder();
if (!$themeFolder) {
$this->cleanup();
return 1;
}
// Get the modules folder of the theme, attempting to create it if not existing,
// and create a new module manager instance.
$moduleFolder = $this->getModuleFolder($themeFolder);
if (!$moduleFolder) {
$this->cleanup();
return 1;
}
$manager = new ThemeModuleManager($moduleFolder);
// Handle existing modules with the same name
$exitingModulesWithName = $manager->getByName($themeModule->name);
$shouldContinue = $this->handleExistingModulesWithSameName($exitingModulesWithName, $manager);
if (!$shouldContinue) {
$this->cleanup();
return 1;
}
// Extract module ZIP into the theme modules folder
try {
$newModule = $manager->addFromZip($themeModule->name, $zip);
} catch (ThemeModuleException $exception) {
$this->error("ERROR: Failed to install module with error: {$exception->getMessage()}");
$this->cleanup();
return 1;
}
$this->info("Module \"{$newModule->name}\" ({$newModule->getVersion()}) successfully installed!");
$this->info("Install location: {$moduleFolder}/{$newModule->folderName}");
$this->cleanup();
return 0;
}
/**
* @param ThemeModule[] $existingModules
*/
protected function handleExistingModulesWithSameName(array $existingModules, ThemeModuleManager $manager): bool
{
if (count($existingModules) === 0) {
return true;
}
$this->warn("The following modules already exist with the same name:");
foreach ($existingModules as $folder => $module) {
$this->line("{$module->name} ({$folder}:{$module->getVersion()}) - {$module->description}");
}
$this->line('');
$choices = ['Cancel module install', 'Add alongside existing module'];
if (count($existingModules) === 1) {
$choices[] = 'Replace existing module';
}
$choice = $this->choice("What would you like to do?", $choices, 0, null, false);
if ($choice === 'Cancel module install') {
return false;
}
if ($choice === 'Replace existing module') {
$existingModuleFolder = array_key_first($existingModules);
$this->info("Replacing existing module in {$existingModuleFolder} folder");
$manager->deleteModuleFolder($existingModuleFolder);
}
return true;
}
protected function getModuleFolder(string $themeFolder): string|null
{
$path = $themeFolder . DIRECTORY_SEPARATOR . 'modules';
if (file_exists($path) && !is_dir($path)) {
$this->error("ERROR: Cannot create a modules folder, file already exists at {$path}");
return null;
}
if (!file_exists($path)) {
$created = mkdir($path, 0755, true);
if (!$created) {
$this->error("ERROR: Failed to create a modules folder at {$path}");
return null;
}
}
return $path;
}
protected function getThemeFolder(): string|null
{
$path = theme_path('');
if (!$path || !is_dir($path)) {
$shouldCreate = $this->confirm('No active theme folder found, would you like to create one?');
if (!$shouldCreate) {
return null;
}
$folder = 'custom';
while (file_exists(base_path("themes" . DIRECTORY_SEPARATOR . $folder))) {
$folder = 'custom-' . Str::random(4);
}
$path = base_path("themes/{$folder}");
$created = mkdir($path, 0755, true);
if (!$created) {
$this->error('Failed to create a theme folder to use. This may be a permissions issue. Try manually configuring an active theme');
return null;
}
$this->info("Created theme folder at {$path}");
$this->warn("You will need to set APP_THEME={$folder} in your BookStack env configuration to enable this theme!");
}
return $path;
}
protected function validateAndGetModuleInfoFromZip(ThemeModuleZip $zip): ThemeModule|null
{
if (!$zip->exists()) {
$this->error("ERROR: Cannot open ZIP file at {$zip->getPath()}");
return null;
}
if ($zip->getContentsSize() > (50 * 1024 * 1024)) {
$this->error("ERROR: Module ZIP file contents are too large. Maximum size is 50MB");
return null;
}
try {
$themeModule = $zip->getModuleInstance();
} catch (ThemeModuleException $exception) {
$this->error("ERROR: Failed to read module metadata with error: {$exception->getMessage()}");
return null;
}
return $themeModule;
}
protected function downloadModuleFile(string $location): string|null
{
$httpRequests = app()->make(HttpRequestService::class);
$client = $httpRequests->buildClient(30, ['stream' => true]);
$originalUrl = parse_url($location);
$currentLocation = $location;
$maxRedirects = 3;
$redirectCount = 0;
// Follow redirects up to 3 times for the same hostname
do {
$resp = $client->sendRequest(new Request('GET', $currentLocation));
$statusCode = $resp->getStatusCode();
if ($statusCode >= 300 && $statusCode < 400 && $redirectCount < $maxRedirects) {
$redirectLocation = $resp->getHeaderLine('Location');
if ($redirectLocation) {
$redirectUrl = parse_url($redirectLocation);
if (
($originalUrl['host'] ?? '') === ($redirectUrl['host'] ?? '')
&& ($originalUrl['scheme'] ?? '') === ($redirectUrl['scheme'] ?? '')
&& ($originalUrl['port'] ?? '') === ($redirectUrl['port'] ?? '')
) {
$currentLocation = $redirectLocation;
$redirectCount++;
continue;
}
}
}
break;
} while (true);
if ($resp->getStatusCode() >= 300) {
$this->error("ERROR: Failed to download module from {$location}");
$this->error("Download failed with status code {$resp->getStatusCode()}");
return null;
}
$tempFile = tempnam(sys_get_temp_dir(), 'bookstack_module_');
$fileHandle = fopen($tempFile, 'w');
$respBody = $resp->getBody();
$size = 0;
$maxSize = 50 * 1024 * 1024;
while (!$respBody->eof()) {
fwrite($fileHandle, $respBody->read(1024));
$size += 1024;
if ($size > $maxSize) {
fclose($fileHandle);
unlink($tempFile);
$this->error("ERROR: Module ZIP file is too large. Maximum size is 50MB");
return '';
}
}
fclose($fileHandle);
$this->cleanupActions[] = function () use ($tempFile) {
unlink($tempFile);
};
return $tempFile;
}
protected function getPathToZip(string $location): string|null
{
$lowerLocation = strtolower($location);
$isRemote = str_starts_with($lowerLocation, 'http://') || str_starts_with($lowerLocation, 'https://');
if ($isRemote) {
// Warning about fetching from source
$host = parse_url($location, PHP_URL_HOST);
$this->warn("This will download a module from {$host}. Modules can contain code which would have the ability to do anything on the BookStack host server.\nYou should only install modules from trusted sources.");
$trustHost = $this->confirm('Are you sure you trust this source?');
if (!$trustHost) {
return null;
}
// Check if the connection is http. If so, warn the user.
if (str_starts_with($lowerLocation, 'http://')) {
$this->warn("You are downloading a module from an insecure HTTP source.\nWe recommend only using HTTPS sources to avoid various security risks.");
if (!$this->confirm('Are you sure you want to continue without HTTPS?')) {
return null;
}
}
// Download ZIP and get its location
return $this->downloadModuleFile($location);
}
// Validate file and get full location
$zipPath = realpath($location);
if (!$zipPath || !is_file($zipPath)) {
$this->error("ERROR: Module file not found at {$location}");
return null;
}
return $zipPath;
}
protected function cleanup(): void
{
foreach ($this->cleanupActions as $action) {
$action();
}
}
}