Thumbnails from Amazon S3 not being generated

I'm implementing an S3 media source in Revo 2.2. I can browse it fine, add to it and link images up. They all work fine on the front end, but phpthumb in the manager can't create thumbnails from them.

Should it be able to?

Here's what I get in the manager logs:
[2012-02-09 16:28:20] (ERROR @ /var/www/vhosts/flaere.com/httpdocs/core/model/phpthumb/phpthumb.class.php : 3210) PHP warning: file_get_contents(http://d2194kovohby05.cloudfront.net/Albanian Bathers - Albania- 2006.jpg) [<a href='function.file-get-contents'>function.file-get-contents</a>]: failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found

[2012-02-09 16:28:20] (ERROR @ /connectors/system/phpthumb.php) phpThumb was unable to generate a thumbnail for: /var/www/vhosts/flaere.com/httpdocs/core/cache/phpthumb/phpThumb_cache_flaere.studiorepublic.com_src8b7bf961881f287f762865710590d5bc_paradf896d45f319fa323d889e84ccb98c5_dat0.jpeg
[2012-02-09 16:28:20] (ERROR @ /connectors/system/phpthumb.php) Error outputting thumbnail:
OutputThumbnail() failed because !is_resource($this->gdimg_output) in file "phpthumb.class.php" on line 557

...and although it says there's a 404 error I can access the file through a browser. Could it be that I'm using Cloudfront rather than connecting directly to the S3 instance?

...just tried with a new media source and a different http error butstill no thumbnail...

[2012-02-09 16:35:33] (ERROR @ /var/www/vhosts/flaere.com/httpdocs/core/model/phpthumb/phpthumb.class.php : 3210) PHP warning: file_get_contents(http://flaere.artworks.s3.amazonaws.com/Albanian Bathers - Albania- 2006.jpg) [<a href='function.file-get-contents'>function.file-get-contents</a>]: failed to open stream: HTTP request failed! HTTP/1.1 505 HTTP Version Not Supported

[2012-02-09 16:35:34] (ERROR @ /connectors/system/phpthumb.php) phpThumb was unable to generate a thumbnail for: /var/www/vhosts/flaere.com/httpdocs/core/cache/phpthumb/phpThumb_cache_flaere.studiorepublic.com_srcaf7e52364ae3024358dcc2dfb37dcdd3_paradf896d45f319fa323d889e84ccb98c5_dat0.jpeg
[2012-02-09 16:35:34] (ERROR @ /connectors/system/phpthumb.php) Error outputting thumbnail:
OutputThumbnail() failed because !is_resource($this->gdimg_output) in file "phpthumb.class.php" on line 557

OK - two pitfalls discovered...

Creating folders and uploading files with CloudBerry explorer does something (god knows what) to the permissions - this causes 505 errors.

Spaces in filenames cause the file-get-contents function to fall over causing the 404 error.

So now, new question - I can't imagine many clients remembering for format their filenames without spaces so is there something that can be added to the phpthumb class to escape the url?

You should never deploy files with spaces in the name, there's far too many potential compatibility issues. If you wish to escape them use %20, but I'd recommend advising your clients to use dashes or underscores.

My Example File.rar

Becomes...

My%20Example%File.rar

I can't comment on whether this will work as escaping in MODx or for the phpThumbOf interepter.

I don't name files with spaces but how ever much you try to educate a client there's only so much you can do! Is there any way to validate a file name through the modx browser when a user uploads does anyone know?

Quote from: [email protected] at Feb 10, 2012, 02:58 AM

I don't name files with spaces but how ever much you try to educate a client there's only so much you can do! Is there any way to validate a file name through the modx browser when a user uploads does anyone know?

maybe this solution helps?

Looks good - question is, would that work with Amazon S3 uploads or just uploads to the local filesystem?

Ironically Chris, I'm now faced with the exact same issue you had with no Thumbnails being generated when browsing an S3 Bucket. Did you find a solution?

It looks like permissions are a bit of a minefield with Amazon buckets. Make sure the bucket and the files are set to be publicly available and of course that the filenames are formatted correctly. I've found that uploading through modx or through my S3 control panel is fine, but using CloudBerry Explorer does something to the permissions which makes the files unreadable by phpthumb.

Hope this helps Ralph!