@TPE

Try the below steps:
1.) Create a new directory called osticket_tmp somewhere (ideally outside of your HTML directory) and give it 777 permissions (just to start with).
2.) Open include/class.pdf.php, go to line 76 (here), and change sys_get_temp_dir() to '/path/to/your/osticket_tmp' (with the quotes).
3.) Retry printing a Ticket.

If that works adjust the permissions on the new osticket_tmp directory to something like 755. Just make sure the system is able to delete the temporary files it creates otherwise this directory will grow in size each time you print.

If that still doesn't work your host has some funky restrictions and it'd be worth contacting their support to see what's causing the issue.

Cheers.

    Trying to create a temp folder with additional write permissions didn't change the behavior.
    Even so, I learned a little more:

    I have a specific test ticket that has one attachment (an .mp3 file)
    I can print this specific test ticket without attachments (PASS)
    I can click on the attachment and the attachment will download (PASS)
    When I click on "print with attachments", it doesn't work (FAIL)

    This is what I see on screen:

    And I get a corresponding email with this message:

    eMail Subject: IOException: Unable to read resource content
    eMail body: (root)/tef_artifacts/u/ub1iOX6qrXAygg8Gu9tdx18C1Y0Z7z1g: Unable to read from file
    http://xxredactedxx/service

    We don't have an abnormal hosting issue - the OST implementation worked all the way up until we noticed some file permissions change in our public_html directory (perhaps a virus), and we restored all of the permissions that we could identify outside of OST. We think that our problem is that we haven't restored the permissions WITHIN OST. Is there a way to restore all the permissions throughout the implementation?

    This looks like a permissions/ownership issue some where to me at one of the places here🙁root)/tef_artifacts/u/ub1iOX6qrXAygg8Gu9tdx18C1Y0Z7z1g

    Directory "u" is empty.
    The filename "ub1iOX6qrXAygg8Gu9tdx18C1Y0Z7z1g" doesn't exist anywhere in our directories.

    My assumption is that this path represents the ticket's attachment (mp3 file in my example above)?

    As I described above, I can click on the attachment link in the ticket, and it will locate and download the attachment to my downloads folder normally.

    I'm starting to wonder if the system is choking while printing an .mp3 ? Is there something to suppress non-printable attachments? We rely heavily on inbound voice messages from our voicemail system.

    Also, do these permissions look generically accurate to you? Do you expect to see 1755, 1355, 0755, and 0644 (on the .keep file)

    That looks pretty standard to me. Maybe what's happening is the attachment is getting written in the PHP temp directory, and when when PHP goes to move it to its final home the permissions are choking. This resulting in the cannot read the file... since it doesn't exist.

    Whats the fix?

    Make sure that the PHP temp directory has the proper permissions.
    Since this is hosted you would likely need to talk to the host for support on that.

    What should the PHP temp directory permissions be in order to work with OST?
    Ours is 755, owner = redactedUserName:redactedUserName

    Our sites aren't managed. We operate our own VPS... but either way, I'm unclear what you're recommending that we look for from a "hosting" perspective? What should we find and fix?

    Also, I've asked several times how to verify all the permissions on all the files and folders. Is there a tool or utility that either "verifies" or "restores" the installation files?

    We're desperate - is there any paid support channel that we can tap to get this resolved?

    Thanks in advance.

    How do we verify all the permissions on all the files and folders. Is there a tool or utility that either "verifies" or "restores" the installation files?

    ntozier
    What is "my destination"? What should I be comparing? /tmp to ???

      You said your destination was (root)/tef_artifacts/

      the webserver user would need to be able to read and write to it.

      The permissions on (root)/tef_artifacts is 755.
      Recall: I can successfully upload an attachment to a ticket, and successfully fetch (download) an attachment on a ticket... but I can't print a ticket with attachments.

      From above:

      Ours is 755, owner = redactedUserName:redactedUserName

      Regarding this other support ticket... we don't see any errors anywhere (see my OP).
      I created the temp.php file that will echo the location of the system temp directory.
      The output is correct:

      [redactedUserName public_html]$ php tjtest.php
      /tmp

      We successfully upgraded our implementation to 1.15.4 today, without a change in behavior for printing tickets that contain attachments.

      3 months later

      We still don't have a resolution for this.

      After upgrading and 2 more months of experimenting, we can't find a consistent reason why some tickets aren't printing.

      Do we have any more options or troubleshooting procedures?

      Thanks in advance.

      @TPE

      Your initial issue is that one of the attachments doesn't exist (as you mentioned) so when you go to print with attachments it goes to grab the file and fatally fails as it’s not found. Why doesn’t it exist? That’s unknown at this point. It could be permission/ownership issues, it can be /tmp dir issues, it could have been deleted on the server, it can be all sorts of things. If the majority of attachments are being saved to the file system successfully then you really need to investigate on the server end of things to see why certain files don’t exist when others do. Are there intermittent issues happening that is causing this? Is there something cleaning the disk and removing files unintentionally? There are just so many possibilities.

      I would say if you have a current example of this then check a recent backup of your server (or whatever drive that has the attachments) to see if it ever existed and vanished at some point or never existed at all. This can help you narrow down where this is stemming from.

      I can say from the software side of things it doesn’t really make sense that most of your attachments are saved just fine and some are just plain missing. I mean in normal situations it should have the same connection, same path, same permissions every single time.

      Cheers.

      6 days later

      I think this can be nudged forward by examining only the case where the documents are on the filesystem, and ignoring the "missing documents" problem for now.

      Use Case:

      1. Create a ticket.

      2. Document is uploaded to a ticket, and ticket saved successfully.

      3. We navigate to the ticket again, we can see the document attachment link.

      4. We can click on the link, a new browser windows opens (blank) and the document downloads into our local downloads folder.

      5. The downloaded document can be opened and viewed normally.

      6. We then attempt print the ticket with attachments... this fails. We get a blank screen (as above) and no downloaded file.

      7. We again attempt print the ticket without attachments... this also fails. We get a blank screen (as above) and no downloaded file.

        TPE

        Then you should be seeing errors somewhere. If it’s failing then there has to be errors.

        Cheers.

          Right. We've been asking where we should find the errors.

          We don't see them in the OST admin System Logs, we don't see them in our Apache/PHP Logs (WHM > CPanel > Errors).

          We're not sure that the observed ABEND is a failure...

          In other words, it appears to successfully do nothing.

          One of the reasons we think so, is because its inconsistent - some tickets will print, others won't. Seems unlikely to be a permissions issue on specific folder or php file, because of the inconsistent success that we observe.

          For example, we would expect the wrong permissions on /tmp to affect the printing of ALL tickets, not SOME of the tickets.

          Thoughts?