[pmwiki-users] Uploads not Attached partially blocking ?action=upload page creation

[Petko Yotov]

If I understand correctly, in the ?action=upload page you see the upload 
form and the DDMU dropzone, but not the Upload quick reference and the 
attach list?

First I'd check if the wikigroup or the page has a different language 
which defines a custom page 'PmWikiIt.UploadQuickReference' instead of 
the default one in the Site group, and the custom page doesn't exist, or 
is incomplete.

If this is the case, I'd create the custom UploadQuickReference page, by 
either translating or simply including the default one from Site.

I'd also check the "file" permissions to the *.UploadQuickReference file 
in wiki.d/ or wikilib.d/ -- make sure the PHP process can access it. You 
should either check the hosting documentation, or set these file 
permissions to be the same as those of another file that works, say 
Site.AllRecentChanges.

If this is not the case, I'd follow the steps in PmWiki:Troubleshooting, 
notably:

* Disable DDMU and Attachtable, and change to one of the core skins.
* Reload the ?action=upload page.
* If all works well, the custom skin or one of the 2 recipes above is 
causing the problem.
** Enable them one after the other, and reload the page.
** If the page fails, the one you just enabled is probably causing it.
* With the 3 disabled, if the page still fails, something else is 
causing it.
** Maybe disable more local customizations and reload the page.
** When the page works, probably the last disabled one caused it.

Then let us know and we'll see if we can update it.

Finally, if you have any recipes calling the function htmlspecialchars() 
I'd suggest you replace these calls with PHSC(). This is a PmWiki helper 
function that works in some cases the original one returns a blank 
section of a page.

Petko


> I am on a 8.2.1 php shared hosting, pmwiki-2.3.20, attachtable-php74 
> and the latest (20200612) DragDropMultiUpload version.
> All is set as I do since several years, including a per page uploads 
> storage.
> It works as usual BUT since a while it started failing at times.
> 
> Failures take the form of the ?action=upload page loading normally till 
> the ddmu upload area included ($DDMUEnableDropzone = 1;); then nothing 
> else appears and the page ends there. All still works, but there is no 
> way to see uploaded files.
> 
> After some tests, I am bound to think that failures are triggered when 
> uploaded files are not actually Attach(ed) to the page.
> 
> This (mis)behaviour has started a few months ago, so it is due to some 
> "evil" php 8.x.x update, perhaps.