1 | <?php |
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2 | |||
3 | namespace SilverStripe\Subsites\Middleware; |
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4 | |||
5 | use SilverStripe\Admin\AdminRootController; |
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6 | use SilverStripe\Control\HTTPRequest; |
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7 | use SilverStripe\Control\Middleware\HTTPMiddleware; |
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8 | use SilverStripe\Core\Config\Configurable; |
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9 | use SilverStripe\Core\Injector\Injector; |
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10 | use SilverStripe\ORM\Connect\DatabaseException; |
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11 | use SilverStripe\Subsites\Model\Subsite; |
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12 | use SilverStripe\Subsites\State\SubsiteState; |
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13 | |||
14 | class InitStateMiddleware implements HTTPMiddleware |
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15 | { |
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16 | use Configurable; |
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17 | |||
18 | /** |
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19 | * URL paths that should be considered as admin only, i.e. not frontend |
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20 | * |
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21 | * @config |
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22 | * @var array |
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23 | */ |
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24 | private static $admin_url_paths = [ |
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25 | 'dev/', |
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26 | 'graphql/', |
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27 | ]; |
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28 | |||
29 | public function process(HTTPRequest $request, callable $delegate) |
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30 | { |
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31 | try { |
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32 | // Initialise and register the State |
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33 | $state = SubsiteState::create(); |
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34 | Injector::inst()->registerService($state); |
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35 | |||
36 | // Detect whether the request was made in the CMS area (or other admin-only areas) |
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37 | $isAdmin = $this->getIsAdmin($request); |
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38 | $state->setUseSessions($isAdmin); |
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39 | |||
40 | // Detect the subsite ID |
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41 | $subsiteId = $this->detectSubsiteId($request); |
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42 | $state->setSubsiteId($subsiteId); |
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43 | |||
44 | return $delegate($request); |
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45 | } catch (DatabaseException $ex) { |
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46 | $message = $ex->getMessage(); |
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47 | if (strpos($message, 'No database selected') !== false |
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48 | || preg_match('/\s*(table|relation) .* does(n\'t| not) exist/i', $message) |
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49 | ) { |
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50 | // Database is not ready, ignore and continue. Either it doesn't exist or it has no tables |
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51 | return $delegate($request); |
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52 | } |
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53 | throw $ex; |
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54 | } finally { |
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55 | // Persist to the session if using the CMS |
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56 | if ($state->getUseSessions()) { |
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57 | $request->getSession()->set('SubsiteID', $state->getSubsiteId()); |
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58 | } |
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59 | } |
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60 | } |
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61 | |||
62 | /** |
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63 | * Determine whether the website is being viewed from an admin protected area or not |
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64 | * |
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65 | * @param HTTPRequest $request |
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66 | * @return bool |
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67 | */ |
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68 | public function getIsAdmin(HTTPRequest $request) |
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69 | { |
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70 | $adminPaths = static::config()->get('admin_url_paths'); |
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71 | $adminPaths[] = AdminRootController::admin_url(); |
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72 | $currentPath = rtrim($request->getURL(), '/') . '/'; |
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73 | foreach ($adminPaths as $adminPath) { |
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74 | if (substr($currentPath, 0, strlen($adminPath)) === $adminPath) { |
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75 | return true; |
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76 | } |
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77 | } |
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78 | return false; |
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79 | } |
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80 | |||
81 | /** |
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82 | * Use the given request to detect the current subsite ID |
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83 | * |
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84 | * @param HTTPRequest $request |
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85 | * @return int |
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86 | */ |
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87 | protected function detectSubsiteId(HTTPRequest $request) |
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88 | { |
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89 | if ($request->getVar('SubsiteID') !== null) { |
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90 | return (int) $request->getVar('SubsiteID'); |
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91 | } |
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92 | |||
93 | if (SubsiteState::singleton()->getUseSessions() && $request->getSession()->get('SubsiteID') !== null) { |
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94 | return (int) $request->getSession()->get('SubsiteID'); |
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95 | } |
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96 | |||
97 | $subsiteIdFromDomain = Subsite::getSubsiteIDForDomain($request->getHost()); |
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98 | if ($subsiteIdFromDomain !== null) { |
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99 | return (int) $subsiteIdFromDomain; |
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100 | } |
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101 | |||
102 | // Default fallback |
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103 | return 0; |
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104 | } |
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105 | } |
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106 |