Loading...
 
Skip to main content

Crash with blank screen at starting for new users (unknown) visitor with 8.1

  • Tracker item actions
Trackers
Items
Status
Closed
Subject
Crash with blank screen at starting for new users (unknown) visitor with 8.1
Version
8.x
Category
  • Error
  • Regression
Resolution status
Out of Date
Submitted by
Bernard TREMBLAY
Lastmod by
Ushindi Gedeon
Rating
(0)
Description

Main bug.

A new user can't at all connect and get a blank screen.
This without crash.

If the user have an analyser he will find that tiki has sent this code

The page sent content
Copy to clipboard
<html><header</header><body></body></html>


Files
  1. User Prefs
  2. User Prefs
Solution

Note : I had redacted this before a commit but I used the "close button" of "code" plugin which have cut off a large part of my text, and I had a net cutoff just after. So I reproduce here (main page) my solution (which have been detailed in comments). Later Chealer got on the subject.

Probably and surely avoid that $_SESSION'attributes' should be not null, but not only in my opinion.

But as the developer writing, when user is null (new one) the instruction

The actual instruction
Copy to clipboard
array_merge($prefs, $_SESSION['attributes'])


has the aim to keep $prefs values even $_SESSION'attributes' is empty (first start)

The fact that array_merge($prefs, $_SESSION'attributes') returns "null" for any reason (bug in SESSION old DATA etc...), is always an error (if an array is null the instruction array_merge returns an array null in any case).

So the right instruction which answers to the developer aim is (because $prefs can't be null)

The suitable instruction in any case
Copy to clipboard
if (! is_null ($_SESSION['attributes']))array_merge($prefs, $_SESSION['attributes']);

I commit this changes the 19th which has been immediately rewind to be sure that the bug remains...
I don't understand Chealer decision(see the comments).

Waiting for Chealer solution and remarks, may be I have not seen something.

To go farther... I let Chealer go on.

Workaround

Spent near 12hours to find that in user_prefs.php if the data come from another version the $_SESSION'attributes' is a null area.
when merged with prefs default we get null prefs which automatically crashes the execution.

Priority
25
Demonstrate Bug on Tiki 19+
Demonstrate Bug (older Tiki versions)
Ticket ID
4051
Created
Saturday 19 November, 2011 01:56:20 UTC
by Bernard TREMBLAY
LastModif
Friday 03 July, 2026 10:24:48 UTC


Show PHP error messages