Image Cache

Y2K Software Image Cache

Compatible at least with vBulletin 3.5.4 and 3.6.4

Please click here for the product Import External Images for vBulletin 4

This product caches images from external sites to a local board folder (including signatures) located at:

http://www.domain.tld/[forum/]imgcache

Installation

1. Please create at your vBulletin board directory a folder called: imgcache and give it the following access rights: CHMOD 777 (read/write/modify to all users)
2. Create an empty index.html file in this folder to avoid file exploring and direct download on some systems.
3. Copy the y2kswimgcache.php file to your vBulletin board (forum home) directory.
4. Close your forum temporarily to the public.
5. Install the product product-y2kswimagecache.xml to your board (allow overwrite if already present).
   The installer will add a table called '[prefix]y2ksw_imgcache' with one field (int ID AUTOINCREMENT) to your board database.
   Please note: Although the uninstaller is provided, it is commented out. By removing the table, and reinstalling the plugin later, the cached images would be overwritten, because of the field counter restarting from 1.
   By leaving the table in your database, you may reinstall the plugin later without collision problems.
6. Test the product: New thread, reply, edit. If errors occur (or white pages), make sure your imgcache/ folder has the required access rights.
7. Reopen your forum to the public.
8. DONE!

How it works

When a board user opens a new thread or message, or edits an existing one (all advanced, quick-reply and ajax), and pastes an image from all but the local cache directory (or by copy and paste, or by specifying [IMG] tags), upon submission the image is read from the external url and written to the local (server) image cache folder.
This avoids to show a placeholder image when the source link is dead or temporarily unavailable.

The link to the image is accordingly replaced.

The script scans first all image references and creates a table of unique images in the current message. It creates a new database table entry in y2ksw_imgcache for each image, reads the new ID and creates a sequence of new images for each url it happens to be readable, and creates for each successful read an imgcache/<id>.png file.

After this sequence, the files are cached locally and may disappear from their sources without leaving an unreferenced image pointer at the local board.

Known bugs

When an image link contains dynamic data, vBulletin would show the image in preview, but change also the IMG tags to URL.
This causes to loose the reference and the plugin will not attempt to recover. A possible solution is to allow dynamic contents for IMG tags on your board.

Version history

1.0.3.0 2007-08-19 Repaired browser (IE 7) issue for images of a different file extension than the officially recognized types. For this issue, newly cached files have now the *.png extension.
1.0.2.0 2006-08-27 Image caching of signatures ([IMG] tags for signatures must be enabled); added a donation button inside readme.htm for specific user requests, which will help us to keep this product always up-to-date.
1.0.1.2 2006-08-07 Release changes for vbulletin.org
1.0.1.1 2006-08-06 Image size verification to avoid caching of invalid images
1.0.1.0 2006-07-17 Collision-free unique cache ID's
1.0.0.0 2006-07-17 Product creation

[KingPin6]

17 was a typo which I fixed before your post but you read it already thank you, I will debug my setup further and will reply back with anything I come up with.

[Lethe]

actually nice mod..thx..
i used it for 1 week but i just have to much images on my users posts so i uninstalled it.. in one week i got nearly 100 mb in the imgcache folder. i cant delete them couse all links are automaticly rewritten to the imgcache folder..
the question is ; is there a way to rewrite them back ?

[y2ksw]

Originally Posted by Lethe

actually nice mod..thx..
i used it for 1 week but i just have to much images on my users posts so i uninstalled it.. in one week i got nearly 100 mb in the imgcache folder. i cant delete them couse all links are automaticly rewritten to the imgcache folder..
the question is ; is there a way to rewrite them back ?

Sorry, there is no way, since the original URL is not stored anywhere.

[Njm]

thanx 4 the hack

some user have issue with it

when i put manny image in my post and add it .. it will take long time to show

and some time it give me server Busy ?
HTTP 408/409 Server Busy

how can i fix it ?


thanx agin my frined


vBulletin Version 3.6.8

[y2ksw]

Every image is downloaded form the source as-is, and thus may take quite some time to download. The message will not show up before all images are downloaded.

If you host on a fast server, this should not be an issue, but on shared systems it may be a problem.

[hilfe-forum]

Hmm dont work wen Pic URL is not hard-Postet....

[y2ksw]

Well, sure, an image link is always an URL and thus handled just as that.

[yahoooh]

there is an error should be fixed:

i have gallery for images and also hosting images service
when a member use images already in my gallery on on my server it will be also copied and go to imgcache and i think this is not needed so

how to exclude images that already present on my site folders ?

[hilfe-forum]

Originally Posted by y2ksw

Well, sure, an image link is always an URL and thus handled just as that.

no change to work with revite URL?s?

in my Board a plugin revite this url: "www.abc.de" to this "pic.abc.de/fg.jpg"

So in post i see the picture but your plugin only see www.abc.de?...

[booktoweb]

its not work with me in 3.6.8