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| 1 | <?php |
| 2 | |
| 3 | namespace GrowthExperiments\EventLogging; |
| 4 | |
| 5 | use ExtensionRegistry; |
| 6 | use GrowthExperiments\Specials\SpecialWelcomeSurvey; |
| 7 | use MediaWiki\Extension\EventLogging\EventLogging; |
| 8 | use MediaWiki\Request\WebRequest; |
| 9 | use MediaWiki\User\User; |
| 10 | use Psr\Log\LoggerInterface; |
| 11 | |
| 12 | class WelcomeSurveyLogger { |
| 13 | |
| 14 | public const SCHEMA = '/analytics/mediawiki/welcomesurvey/interaction/1.0.1'; |
| 15 | private const STREAM_NAME = 'mediawiki.welcomesurvey.interaction'; |
| 16 | public const INTERACTION_PHASE_COOKIE = 'growth.welcomesurvey.phase'; |
| 17 | public const WELCOME_SURVEY_TOKEN = 'growth.welcomesurvey.token'; |
| 18 | public const WELCOME_SURVEY_LOGGED_OUT = 'logged_out'; |
| 19 | |
| 20 | /** @var LoggerInterface */ |
| 21 | private $logger; |
| 22 | /** @var WebRequest */ |
| 23 | private $webRequest; |
| 24 | /** @var bool */ |
| 25 | private $isMobile; |
| 26 | /** @var User */ |
| 27 | private $user; |
| 28 | /** @var array */ |
| 29 | private $loggedActions = []; |
| 30 | |
| 31 | /** |
| 32 | * @param LoggerInterface $logger |
| 33 | */ |
| 34 | public function __construct( LoggerInterface $logger ) { |
| 35 | $this->logger = $logger; |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * @param WebRequest $webRequest |
| 40 | * @param User $user |
| 41 | * @param bool $isMobile |
| 42 | */ |
| 43 | public function initialize( WebRequest $webRequest, User $user, bool $isMobile ): void { |
| 44 | $this->webRequest = $webRequest; |
| 45 | $this->user = $user; |
| 46 | $this->isMobile = $isMobile; |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Log user interactions with the WelcomeSurvey form. |
| 51 | * |
| 52 | * @param string $action |
| 53 | */ |
| 54 | public function logInteraction( string $action ): void { |
| 55 | $event = [ |
| 56 | '$schema' => self::SCHEMA, |
| 57 | 'action' => $action, |
| 58 | 'is_mobile' => $this->isMobile, |
| 59 | 'was_posted' => $this->webRequest->wasPosted(), |
| 60 | 'user_id' => $this->user->getId(), |
| 61 | 'token' => $this->webRequest->getVal( '_welcomesurveytoken' ), |
| 62 | 'returnto_param_is_present' => ( $this->webRequest->getVal( '_returnto' ) ?? |
| 63 | $this->webRequest->getVal( 'returnto' ) ) !== null, |
| 64 | ]; |
| 65 | // Used for integration testing, see SpecialWelcomeSurveyTest.php. |
| 66 | $this->loggedActions[] = $event; |
| 67 | // Used to keep track of whether the user is logged out when submitting the form. See |
| 68 | // WelcomeSurveyHooks::onSpecialPageBeforeExecute |
| 69 | $this->webRequest->response()->setCookie( self::INTERACTION_PHASE_COOKIE, $action ); |
| 70 | // Except that if the user reached handleResponses() and is logged in, we'll assume submission worked, |
| 71 | // and we can delete the cookie. |
| 72 | if ( $this->user->isNamed() && $action === SpecialWelcomeSurvey::ACTION_SUBMIT_SUCCESS ) { |
| 73 | $this->webRequest->response()->clearCookie( self::INTERACTION_PHASE_COOKIE ); |
| 74 | } |
| 75 | |
| 76 | // Suspicious events: |
| 77 | // * no token in the event |
| 78 | // * user is logged out |
| 79 | // * the stored token cookie doesn't match what we got from the web request |
| 80 | if ( !$event['token'] || |
| 81 | $event['user_id'] === 0 || |
| 82 | $this->webRequest->getCookie( self::WELCOME_SURVEY_TOKEN ) !== $event['token'] || |
| 83 | $action === self::WELCOME_SURVEY_LOGGED_OUT |
| 84 | ) { |
| 85 | $this->logger->debug( 'Suspicious {schema} event for action {action}', [ |
| 86 | 'schema' => self::SCHEMA, |
| 87 | 'action' => $action, |
| 88 | 'user_id' => $event['user_id'], |
| 89 | 'was_posted' => $event['was_posted'], |
| 90 | 'token' => $event['token'], |
| 91 | 'token_from_cookie' => $this->webRequest->getCookie( self::WELCOME_SURVEY_TOKEN ), |
| 92 | 'is_mobile' => $event['is_mobile'], |
| 93 | 'returnto_param_is_present' => $event['returnto_param_is_present'], |
| 94 | 'interaction_phase_from_cookie' => $this->webRequest->getCookie( self::INTERACTION_PHASE_COOKIE ), |
| 95 | ] ); |
| 96 | } |
| 97 | if ( !ExtensionRegistry::getInstance()->isLoaded( 'EventLogging' ) ) { |
| 98 | return; |
| 99 | } |
| 100 | |
| 101 | // Make sure that the token is a string value for event logging validation. |
| 102 | $event['token'] ??= $this->webRequest->getCookie( self::WELCOME_SURVEY_TOKEN, null, '' ); |
| 103 | |
| 104 | EventLogging::submit( self::STREAM_NAME, $event ); |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * @internal Used for integration testing. |
| 109 | * @return array |
| 110 | */ |
| 111 | public function getLoggedActions(): array { |
| 112 | return $this->loggedActions; |
| 113 | } |
| 114 | |
| 115 | } |