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Attached Image Watermarking PLUS Guest Viewing of Thumbnails Details »»
Attached Image Watermarking PLUS Guest Viewing of Thumbnails
Version: 1.00, by ConqSoft ConqSoft is offline
Developer Last Online: Mar 2012 Show Printable Version Email this Page

Category: Add-On Releases - Version: 3.6.8 Rating:
Released: 03-11-2007 Last Update: 03-12-2007 Installs: 210
Uses Plugins
Additional Files  
No support by the author.

I had been looking for these two options for quite a while, and was finally able to hire Brian (of vBadvanced) to write them for me. Since a lot of people have been looking for this, I have decided (with Brian's permission) to release this as a free, unsupported, modification.

This modification will allow you to specify a watermark image that will be overlayed over any attached JPG or PNG file on your site in real time, as the image is displayed. NO PERMANENT CHANGES ARE MADE TO ANY OF YOUR ATTACHMENTS. You can also exclude specific forums and usergroups from seeing the watermark.

As an added bonus, he included the ability to allow guests to see attached image thumbnails, while still requiring them to register to see the full size attachments. (Make sure you have your Unregistered / Not Logged In usergroup set to NOT have access to download attachments.)

PLEASE CLICK INSTALL so that maybe Jelsoft will include these as built-in features in a future version.

Notes/Troubleshooting:
  • Your server needs to have GD2 installed.
  • Attachments must be stored in the file system. Database storage of file attachments will not work.
  • Make sure you use the full PHYSICAL path to your watermark image.
  • Make sure you have a low number in the width/height setting. (I use 200, since my watermark image is 150 pixels wide.)
  • If you have previously viewed the attached image, your browser may cache it, so you will need to clear your browser cache or force a hard refresh (CTRL-F5) while viewing the image to get the new watermarked version.


Well, on to the modification:

=============================================
STEP 1:
Since the resulting file contains too much vBulletin code, I am unable to include it with this modification. So, the first step is to copy vBulletin's attachment.php to a file named attachment_watermark.php. Then, edit attachment_watermark.php, making the following changes.

=============================================
STEP 2:
You need to delete a LOT of lines from the top of the file. Find this line...
Code:
$idname = $vbphrase['attachment'];
...and delete everything ABOVE it other than the <?php line at the top of the file.

Your attachment_watermark.php file should begin with this code when you've completed this step:
Code:
<?php
$idname = $vbphrase['attachment'];

=============================================
STEP 3:
Find this line of code:
Code:
if (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canview']) OR !($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewthreads']) OR !($forumperms & $vbulletin->bf_ugp_forumpermissions['cangetattachment']) OR (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewothers']) AND ($attachmentinfo['postuserid'] != $vbulletin->userinfo['userid'] OR $vbulletin->userinfo['userid'] == 0)))
REPLACE with this code:
Code:
if (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canview']) OR !($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewthreads']) OR (!($forumperms & $vbulletin->bf_ugp_forumpermissions['cangetattachment']) AND !$vbulletin->GPC['thumb'])  OR (!($forumperms & $vbulletin->bf_ugp_forumpermissions['canviewothers']) AND ($attachmentinfo['postuserid'] != $vbulletin->userinfo['userid'] OR $vbulletin->userinfo['userid'] == 0)))

=============================================
STEP 4:
Find these lines of code:
Code:
	else
	{
		$attachpath = fetch_attachment_path($attachmentinfo['userid'], $attachmentinfo['attachmentid']);
Add this code BELOW the lines referenced above:
Code:
// #########################################
// ##### Start modified section for watermarks
// #########################################

$vbulletin->options['attach_water_exforums'] = explode(',', $vbulletin->options['attach_water_exforums']);
$vbulletin->options['attach_water_exgroups'] = explode(',', $vbulletin->options['attach_water_exgroups']);


if ($vbulletin->options['attach_water_filelocation']
	AND in_array($extension, array('jpg', 'jpeg', 'png'))
	AND !in_array($attachmentinfo['forumid'], $vbulletin->options['attach_water_exforums'])
	AND !array_intersect(fetch_membergroupids_array($vbulletin->userinfo), $vbulletin->options['attach_water_exgroups'])
)
{
	$attachsize = getimagesize($attachpath);

	if ($attachsize[0] >= $vbulletin->options['attach_water_minsize'] AND $attachsize[1] >= $vbulletin->options['attach_water_minsize'])
	{
		$waterimage =& $vbulletin->options['attach_water_filelocation'];
		$watersize = getimagesize($waterimage);

		$waterext = strtolower(substr($waterimage, strrpos($waterimage, '.') + 1));

		// Coordinates (height)
		switch ($vbulletin->options['attach_water_coordinates'][0])
		{
			case 'n':
				$waterpos['height'] = 0 + $vbulletin->options['attach_water_padding'];
			break;
			case 'm':
				$waterpos['height'] = round(($attachsize[1] - $watersize[1]) / 2);
			break;
			case 's':
				$waterpos['height'] = round(($attachsize[1] - $watersize[1])) - $vbulletin->options['attach_water_padding'];
			break;
		}

		// Coordinates (width)
		switch ($vbulletin->options['attach_water_coordinates'][1])
		{
			case 'w':
				$waterpos['width'] = 0 + $vbulletin->options['attach_water_padding'];
			break;
			case 'c':
				$waterpos['width'] = round(($attachsize[0] - $watersize[0]) / 2);
			break;
			case 'e':
				$waterpos['width'] = round(($attachsize[0] - $watersize[0])) - $vbulletin->options['attach_water_padding'];
			break;
		}

		// Watermark ext
		switch ($waterext)
		{
			case 'jpg':
			case 'jpeg':
				$watermark = imagecreatefromjpeg($waterimage);
			break;

			case 'png':
				$watermark = imagecreatefrompng($waterimage);
			break;
		}

		// Attachment ext
		switch ($extension)
		{
			case 'jpg':
			case 'jpeg':
				$attachimage = imagecreatefromjpeg($attachpath);
			break;

			case 'png':
				$attachimage = imagecreatefrompng($attachpath);
			break;
		}

		imagealphablending($attachimage, true);

		$watermark_width = imagesx($watermark);
		$watermark_height = imagesy($watermark);

		imagecopy($attachimage, $watermark, $waterpos['width'], $waterpos['height'], 0, 0, $watersize[0], $watersize[1]);
		define('WATERMARKED', true);
	}
}
// #########################################
// ##### End modified section for watermarks
// #########################################

=============================================
STEP 5:
Find this line of code:
Code:
header('Content-Length: ' . (($lastbyte + 1) - $startbyte));
REPLACE with this code:
Code:
// #########################################
// ##### Start modified section for watermarks
// ##### Changed to prevent filesize header on watermarked images
// #########################################
if (!defined('WATERMARKED'))
{
	header('Content-Length: ' . (($lastbyte + 1) - $startbyte));
}
// #########################################
// ##### End modified section for watermarks
// #########################################

=============================================
STEP 6:
Find this line of code:
Code:
($hook = vBulletinHook::fetch_hook('attachment_display')) ? eval($hook) : false;
REPLACE with this code:
Code:
// #########################################
// ##### Start modified section for watermarks
// #########################################
if (!$vbulletin->GPC['thumb'] AND defined('WATERMARKED'))
{
	imagejpeg($attachimage);
	imagedestroy($attachimage);
	imagedestroy($watermark);
}
// #########################################
// ##### End modified section for watermarks
=============================================
STEP 7:
Find this line of code:
Code:
($hook = vBulletinHook::fetch_hook('attachment_complete')) ? eval($hook) : false;
REPLACE with this code:
Code:
exit;

=============================================
STEP 8:
Save and upload attachment_watermark.php to your forum root directory.


=============================================
STEP 9:
Install the product-attach_watermark.xml Product via the vBulletin AdminCP Product Manager.


=============================================
STEP 10:
Configure the options at AdminCP -> vBulletin Options -> Attachment Watermarks. All fields should be self-explanatory.

Show Your Support

  • This modification may not be copied, reproduced or published elsewhere without author's permission.

Comments
  #92  
Old 06-20-2007, 08:38 PM
JDM-Spec JDM-Spec is offline
 
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if i upload my watermark logo called: water.png on my root folder , where is supposed to be the physical path to the image ?

1. /water.png ?
2. water.png ?

or ???

thanks
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  #93  
Old 07-11-2007, 04:40 AM
geevest.com geevest.com is offline
 
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i have a problem :

Parse error: syntax error, unexpected T_CASE in /home/website/public_html/forum/attachment_watermark.php on line 79
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  #94  
Old 07-11-2007, 06:19 PM
jasculs jasculs is offline
 
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is there anyway I can get this so registered user can see the thumbnails, but not view the full image also...the guests can see the thumbnails and not view the full image, but the registered users just see a link they aren't allowed to view the image attachment.
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  #95  
Old 07-23-2007, 10:32 PM
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rungok rungok is offline
 
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Had some initial problems like the one Galt reported, but once I actually saved a valid png-watermark instead of a GIF (why did I do that in the first place?) without transparency it worked just fine. Thanx for this excellent mod!
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  #96  
Old 07-25-2007, 02:56 PM
Thinkinstein Thinkinstein is offline
 
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Anyone know how to disable thumbnail hotlinking with this hack ? I have tried htaccess but in vain.
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  #97  
Old 08-04-2007, 07:13 AM
Raven_FCF Raven_FCF is offline
 
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no idea. i tried this but like a lot of people...it doesn't work.
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  #98  
Old 08-04-2007, 09:42 AM
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ConqSoft ConqSoft is offline
 
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Quote:
Originally Posted by Raven_FCF View Post
no idea. i tried this but like a lot of people...it doesn't work.
If you follow all of the instructions, and do everything noted, it works just fine.

The people who said it didn't work, finally did get it to work when they followed all of the instructions and the Notes/Troubleshooting section above.
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  #99  
Old 08-09-2007, 10:06 AM
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Sean James Sean James is offline
 
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Awesome, been waiting and searching for something like this for ages.

Im guessing there is no problems with this hack and vb3.6.8?
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  #100  
Old 08-09-2007, 12:35 PM
Sean James's Avatar
Sean James Sean James is offline
 
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installed and works great good work
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  #101  
Old 08-09-2007, 11:57 PM
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ND4SPD ND4SPD is offline
 
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Nice mod - works great. Thanks!
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