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  1. Moodle
  2. MDL-72988

PHP Notices detected in web server logs (mod_lti)

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    • MOODLE_311_STABLE, MOODLE_400_STABLE
    • MOODLE_311_STABLE
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      Pre-requisities

      1. Site using PHP8.0

      Test

      1. Init and run the following Behat scenarios in your favorite environment (moodle-docker, terminal...) : 

        --feature=/var/www/html/mod/lti/tests/behat/lti_activity_completion.feature

      2. Confirm they pass
      3. Visually confirm in the browser that there are no exceptions in the tool page
      4. Tail the webserver logs, e.g. for moodle-docker 

        $ docker logs docker_webserver_1 -f

        or for terminal

        tail -f /path/to/your/web/server/error.log

      5. Confirm there are no exceptions similar to the following: 

        Default exception handler: Exception - Warning: Trying to access array offset on value of type bool in [dirroot]/mod/lti/OAuth.php on line 455

      Show
      Pre-requisities Site using PHP8.0 Test Init and run the following Behat scenarios in your favorite environment (moodle-docker, terminal...) : --feature=/var/www/html/mod/lti/tests/behat/lti_activity_completion.feature Confirm they pass Visually confirm in the browser that there are no exceptions in the tool page Tail the webserver logs, e.g. for moodle-docker $ docker logs docker_webserver_1 -f or for terminal tail -f /path/to/your/web/server/error.log Confirm there are no exceptions similar to the following: Default exception handler: Exception - Warning: Trying to access array offset on value of type bool in [dirroot]/mod/lti/OAuth.php on line 455

      This has been detected while checking the error logs as part of the 4.0 release process @ MDL-72815.

      To reproduce:

      • Set web server and CLI to use PHP 8.0.x.
      • Init Behat
      • Run Behat with --tags '@mod_lti&&@core_completion'

      Expected behavior:

      No notices or warnings happen

      Current behavior:

      Some PHP Notices (10 times, 2 per scenario, it seems) happen (maybe visible in the browser, maybe only in web server logs). With content:

      22:378831:[Sat Oct 30 06:56:32.393254 2021] [php:notice] [pid 3779] [client 172.29.0.5:42592] Default exception handler: Exception - Warning: Trying to access array offset on value of type bool in [dirroot]/mod/lti/OAuth.php on line 455 Debug:
      		 
      Error code: generalexceptionmessage
      		 
      * line 157 of /lib/behat/lib.php: Exception thrown
      		 
      * line 455 of /mod/lti/OAuth.php: call to behat_error_handler()
      		 
      * line 431 of /mod/lti/OAuth.php: call to moodle\\mod\\lti\\OAuthRequest->get_normalized_http_url()
      		 
      * line 149 of /mod/lti/OAuth.php: call to moodle\\mod\\lti\\OAuthRequest->get_signature_base_string()
      		 
      * line 519 of /mod/lti/OAuth.php: call to moodle\\mod\\lti\\OAuthSignatureMethod_HMAC->build_signature()
      		 
      * line 514 of /mod/lti/OAuth.php: call to moodle\\mod\\lti\\OAuthRequest->build_signature()
      		 
      * line 3224 of /mod/lti/locallib.php: call to moodle\\mod\\lti\\OAuthRequest->sign_request()
      		 
      * line 680 of /mod/lti/locallib.php: call to lti_sign_parameters()
      		 
      * line 714 of /mod/lti/locallib.php: call to lti_get_launch_data()
      		 
      * line 88 of /mod/lti/launch.php: call to lti_launch_tool()
      		 
      , referer: http://webserver768231fe5b483824/behatrun3/mod/lti/view.php?id=188000

      Note that, while this has been detected only for 4.0dev (with PHP 8.0), it may apply to older (stable) branches too.

        1. MDL-72988_master.webm
          2.33 MB
          Angelia Dela Cruz
        2. MDL-72988_v311.webm
          2.60 MB
          Angelia Dela Cruz
        3. Screenshot from 2021-11-18 21-28-54.png
          139 kB
          Paul Holden

            pholden Paul Holden
            stronk7 Eloy Lafuente (stronk7)
            Jake Dallimore Jake Dallimore
            Eloy Lafuente (stronk7) Eloy Lafuente (stronk7)
            Angelia Dela Cruz Angelia Dela Cruz
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