Month's top: Nobody yet!
Want LAH to translate a manga for you?
Little Angels Hentai Forum Index
Do you want to build a snowman?
PLEASE LOG IN OR REGISTER TO BE ABLE TO SEE THE PICTURES AND ATTACHED FILES!
Same file posted twice

 
Compose reply Little Angels Hentai Forum Index » Help and test-post forum View previous thread
View next thread
DMCA
Same file posted twice
Author Message
Lummox
Moon Angel
Warnings:
Posts: 1548

Post Same file posted twice Quote
The number of times that I have tried to post an image and been assaulted with the message "Attachment already posted" is beyond counting. So imagine my surprise when I found the exact same file posted in two different threads.

In "Swimsuit Tsunami" post http://lah.li/p/393235, the file http://lah.li/download.php?id=354869 is the same file as the file http://lah.li/download.php?id=354896 in the "Short Sighted Cuties" post http://lah.li/p/393239. The attached image shows the Beyond Compare file comparison program result.

How can this be?

Mon Oct 05, 2020 1:03 am Profile PM
mesawalk2
Zombie Angel
Warnings:
Posts: 8742

Post Quote
I'm not privy to the code used by LAH, but I think that I can answer your question.

From my experience, LAH checks the files when one first tries to upload them and compares them to all existing posts. A file that has been added in an Attachment is not, however, considered to BE formally posted until you hit the "Submit" button.

I had started the "Short Sighted Cuties" thread (the image in question is the first image I attached) before davidboy posted in the "Swimsuit Tsunami!!!!!!!!!!!". The file was therefore in the Attachment queue and had been cleared by the system. No additional check was made once I hit "Submit".

I was busy working on several different posts at once, adding files to each of them as I sorted through my collections. In this specific case I recall spending extra time trying to find images in my collection of lolis wearing glasses. They're surprisingly rare outside of SFW images, and I only collect and post those that meet certain standards.

So I attached the image file first, but davidboy completed and submitted his post first. I know that mine was attached first because I began that post at the same time I started my own "Swimsuit Tsunami!!!!!!!!!!!" post, which I then finished, and to which davidboy posted his reply with the image I had queued into "Short Sighted Cuties".

I originally discovered the code problem when I accidentally uploaded the same attachment twice in the same post and it didn't register as a duplicate. That was some time ago. I didn't think anything of it at the time. I see that it can still happen, as it looks like it happened with the first two images in this post http://lah.li/208/the-cute-thread/?page=184#393251

I suppose that one way to prevent the problem from happening in future would be to modify the code to check the contents of the submitted posts as well as the individual attachments when they are made, but that could cause other problems. I've had LAH nearly stall when it's running the attachment comparisons. Running as many as ten at once, prior to accepting a post's submission? That could cause a bigger headache than it would solve.

Mon Oct 05, 2020 6:49 am Profile PM
Lummox
Moon Angel
Warnings:
Posts: 1548

Post Quote
Ah, yes, that would explain it. Thank you for your detailed and informative reply.

Tue Oct 06, 2020 9:36 am Profile PM
Sat
Star Angel
Warnings:
Posts: 7462

Post Quote
As mesawalk says it, there are some exceptions to the check.
It should just defer too many duplicates from being posted and it's not perfect.


_________________

Some people say, universe is a Star Ocean!

Want to donate to keep the site up? PM me for possible donation ways!
We now also accept Bitcoin.

Got a suggestion on how we can improve LAH? Post it here or vote for other people's suggestions!
Sun Oct 11, 2020 9:43 am Profile PM WWW Skype
Novellus
Steel Angel
Warnings:
Posts: 114

Post Quote
I would also assume that the code would not be able to find any edited images like different image formats, image resolution, different compression methods, or different color palettes, all which would be identical to the human eye.


_________________
List of my translations

Looking for people who can hack Visual Novels

Help Our Leader
Wed Oct 28, 2020 12:17 pm Profile PM
Lummox
Moon Angel
Warnings:
Posts: 1548

Post Quote
Novellus:
I would also assume that the code would not be able to find any edited images like different image formats, image resolution, different compression methods, or different color palettes, all which would be identical to the human eye.

Absolutely correct. After you've been here a while, you'll look at a newly-posted image and think "Hmmm... haven't I seen that one here before?"

Thu Oct 29, 2020 3:12 am Profile PM
Display posts from previous:    
Options Quick Reply
Show Smilies

 
Compose reply Quick reply Little Angels Hentai Forum Index » Help and test-post forum All times are GMT
Page 1 of 1

 
Jump to: 
You can post new threads in this forum
You can reply to threads in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum


Do not upload or mention any illegal content. Violators will be reported to the authorities. You are responsible for your uploads and actions.
If it is illegal for you to view adult lolikon material in your current location, leave this site immediately.
LAH is in compliance with DMCA.
LAH works best with JavaScript enabled. Enable it for a better experience. (´・ω・`)
Your browser is outdated and insecure! Please update your browser to fully enjoy LAH.