Skip users without a valid email address

[juliusknorr]

Otherwise calling setTo may fail:

{
  "reqId": "",
  "level": 3,
  "time": "",
  "remoteAddr": "",
  "user": "--",
  "app": "PHP",
  "method": "",
  "url": "--",
  "message": "Undefined offset: 1 at /var/www/html/lib/private/Mail/Message.php#86",
  "userAgent": "--",
  "version": "23.0.9.1",
  "exception": {
    "Exception": "Error",
    "Message": "Undefined offset: 1 at /var/www/html/lib/private/Mail/Message.php#86",
    "Code": 0,
    "Trace": [
      {
        "file": "/var/www/html/lib/private/Mail/Message.php",
        "line": 86,
        "function": "onError",
        "class": "OC\\Log\\ErrorHandler",
        "type": "::"
      },
      {
        "file": "/var/www/html/lib/private/Mail/Message.php",
        "line": 148,
        "function": "convertAddresses",
        "class": "OC\\Mail\\Message",
        "type": "->"
      },
      {
        "file": "/var/www/html/apps/announcementcenter/lib/BackgroundJob.php",
        "line": 205,
        "function": "setTo",
        "class": "OC\\Mail\\Message",
        "type": "->"
      },
      {
        "file": "/var/www/html/lib/private/User/Manager.php",
        "line": 656,
        "function": "OCA\\AnnouncementCenter\\{closure}",
        "class": "OCA\\AnnouncementCenter\\BackgroundJob",
        "type": "->",
        "args": [
          "*** sensitive parameters replaced ***"
        ]
      },
      {
        "file": "/var/www/html/apps/announcementcenter/lib/BackgroundJob.php",
        "line": 212,
        "function": "callForSeenUsers",
        "class": "OC\\User\\Manager",
        "type": "->"
      },
      {
        "file": "/var/www/html/apps/announcementcenter/lib/BackgroundJob.php",
        "line": 151,
        "function": "createPublicityEveryone",
        "class": "OCA\\AnnouncementCenter\\BackgroundJob",
        "type": "->"
      },
      {
        "file": "/var/www/html/apps/announcementcenter/lib/BackgroundJob.php",
        "line": 114,
        "function": "createPublicity",
        "class": "OCA\\AnnouncementCenter\\BackgroundJob",
        "type": "->"
      },
      {
        "file": "/var/www/html/lib/public/BackgroundJob/Job.php",
        "line": 79,
        "function": "run",
        "class": "OCA\\AnnouncementCenter\\BackgroundJob",
        "type": "->"
      },
      {
        "file": "/var/www/html/lib/public/BackgroundJob/QueuedJob.php",
        "line": 47,
        "function": "execute",
        "class": "OCP\\BackgroundJob\\Job",
        "type": "->"
      },
      {
        "file": "/var/www/html/cron.php",
        "line": 151,
        "function": "execute",
        "class": "OCP\\BackgroundJob\\QueuedJob",
        "type": "->"
      }
    ],
    "File": "/var/www/html/lib/private/Log/ErrorHandler.php",
    "Line": 92,
    "CustomMessage": "--"
  }
}
{
  "reqId": "",
  "level": 3,
  "time": "",
  "remoteAddr": "",
  "user": "--",
  "app": "cron",
  "method": "",
  "url": "--",
  "message": "idn_to_ascii() expects parameter 1 to be string, null given",
  "userAgent": "--",
  "version": "23.0.9.1",
  "exception": {
    "Exception": "TypeError",
    "Message": "idn_to_ascii() expects parameter 1 to be string, null given",
    "Code": 0,
    "Trace": [
      {
        "file": "/var/www/html/lib/private/Mail/Message.php",
        "line": 87,
        "function": "idn_to_ascii"
      },
      {
        "file": "/var/www/html/lib/private/Mail/Message.php",
        "line": 148,
        "function": "convertAddresses",
        "class": "OC\\Mail\\Message",
        "type": "->"
      },
      {
        "file": "/var/www/html/apps/announcementcenter/lib/BackgroundJob.php",
        "line": 205,
        "function": "setTo",
        "class": "OC\\Mail\\Message",
        "type": "->"
      },
      {
        "file": "/var/www/html/lib/private/User/Manager.php",
        "line": 656,
        "function": "OCA\\AnnouncementCenter\\{closure}",
        "class": "OCA\\AnnouncementCenter\\BackgroundJob",
        "type": "->",
        "args": [
          "*** sensitive parameters replaced ***"
        ]
      },
      {
        "file": "/var/www/html/apps/announcementcenter/lib/BackgroundJob.php",
        "line": 212,
        "function": "callForSeenUsers",
        "class": "OC\\User\\Manager",
        "type": "->"
      },
      {
        "file": "/var/www/html/apps/announcementcenter/lib/BackgroundJob.php",
        "line": 151,
        "function": "createPublicityEveryone",
        "class": "OCA\\AnnouncementCenter\\BackgroundJob",
        "type": "->"
      },
      {
        "file": "/var/www/html/apps/announcementcenter/lib/BackgroundJob.php",
        "line": 114,
        "function": "createPublicity",
        "class": "OCA\\AnnouncementCenter\\BackgroundJob",
        "type": "->"
      },
      {
        "file": "/var/www/html/lib/public/BackgroundJob/Job.php",
        "line": 79,
        "function": "run",
        "class": "OCA\\AnnouncementCenter\\BackgroundJob",
        "type": "->"
      },
      {
        "file": "/var/www/html/lib/public/BackgroundJob/QueuedJob.php",
        "line": 47,
        "function": "execute",
        "class": "OCP\\BackgroundJob\\Job",
        "type": "->"
      },
      {
        "file": "/var/www/html/cron.php",
        "line": 151,
        "function": "execute",
        "class": "OCP\\BackgroundJob\\QueuedJob",
        "type": "->"
      }
    ],
    "File": "/var/www/html/lib/private/Mail/Message.php",
    "Line": 87,
    "CustomMessage": "--"
  }

[juliusknorr]

Thinking about that maybe we should rather do that in setTo but that would introduce an API change since throwing on that function call is currently not expected.

Or if converting the addresses fails, we just return the passed array and let further error handling happen when actually sending the mail

https://github.com/nextcloud/server/blob/215aef3cbdc1963be1bb6bca5218ee0a4b7f1665/lib/private/Mail/Message.php#L75

[nickvergessen]

/backport to stable24

[nickvergessen]

OCA\AnnouncementCenter\Tests\BackgroundJobTest::testCreatePublicityEveryone with data set #0 (array(true, false, true), true, false, true)
Expectation failed for method name is "send" when invoked 3 time(s).
Method was expected to be called 3 times, actually called 0 times.

😆

[juliusknorr]

Tests should pass now and a server fix was suggested in nextcloud/server#34775