vb.org Archive - Block animated avatars

On my forums we try to enhance the reading experience, and do not allow our members to use animated avatars. One of my members have written the following hack for my forums, and I got his permission to post it here on vbulletin.org.

What this hack does is to prevent your users from uploading an animated image. It does this by checking if the image contains more than one frame. It is not retroactive, and your current avatars will remain as is.

Hope you will enjoy this.

Changes:
1 New Phrase
1 File to edit (profile.php)

Installtime: 45 sec

In profile.php, find:

Code:

// ####################### SET PHP ENVIRONMENT ###########################

Above that, add:

Code:

// Block Animated Avatars Hack - by Scha at freakforum.nu

// start



function isAnimated($filename, $isurl = 0)

{

        $fp = fopen($filename, "rb");

        if(!$fp)

                return false;

        if($isurl)

                $whole = fread($fp, remote_filesize($filename));

        else

                $whole = fread($fp, filesize($filename));

        $i = -1;

        while($i = strpos($whole, 0x2C, $i+1))

        {

                if(strpos($whole, 0x00, $i-1) == $i-1)

                $c++;

        }

        if($c > 1)

                return true;

        return false;

}



// end

// Block Animated Avatars Hack - by Scha at freakforum.nu

In profile.php, find:

Code:

                if ($avatarid == 0)

                {

                        // begin custom avatar code

                      require_once('./includes/functions_upload.php');

                      require_once('./includes/functions_file.php');

REPLACE that with:

Code:

// Block Animated Avatars Hack - by Scha at freakforum.nu   

//start



                require_once('./includes/functions_upload.php');

                require_once('./includes/functions_file.php');



                if(isset($_FILES['upload']) && strtolower(substr($_FILES['upload']['name'], -3)) == 'gif' )    

                        if (isAnimated($_FILES['upload']['tmp_name']))

                                eval(print_standard_error('error_avataranimated'));

                if ( strlen($_POST['avatarurl']) && strtolower(substr($_POST['avatarurl'], -3)) == 'gif' )

                        if(isAnimated($_POST['avatarurl'], 1 && strtolower(substr($_POST['avatarurl'], -3)) == 'gif'))

                                eval(print_standard_error('error_avataranimated'));



// end

// Block Animated Avatars Hack - by Scha at freakforum.nu   

         

                if ($avatarid == 0)

                {

                        // begin custom avatar code

Add phrase 'avataranimated' under the category 'Front-End Error Messages' with the following content

Code:

We do not allow the usage of animated avatars on our forums. Please consider uploading a static image instead.

Done.

Please leave a comment if there is something you are wondering about, or if you encounter a bug.

X vBulletin 3.8.12 by vBS Debug Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (5)bbcode_code_printable (3)bbcode_quote_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)pagenav (1)pagenav_curpage (2)pagenav_pagelink (1)post_thanks_navbar_search (1)printthread (10)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start pagenav_page pagenav_complete bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
Messages:

X vBulletin 3.8.12 by vBS Debug Information

Page Generation 0.01052 seconds
Memory Usage 1,748KB
Queries Executed 10 (?)

More Information

Template Usage:

(1)ad_footer_end
(1)ad_footer_start
(1)ad_header_end
(1)ad_header_logo
(1)ad_navbar_below
(5)bbcode_code_printable
(3)bbcode_quote_printable
(1)footer
(1)gobutton
(1)header
(1)headinclude
(6)option
(1)pagenav
(1)pagenav_curpage
(2)pagenav_pagelink
(1)post_thanks_navbar_search
(1)printthread
(10)printthreadbit
(1)spacer_close
(1)spacer_open

Phrase Groups Available:

global
postbit
showthread

Included Files:

./printthread.php
./global.php
./includes/init.php
./includes/class_core.php
./includes/config.php
./includes/functions.php
./includes/class_hook.php
./includes/modsystem_functions.php
./includes/class_bbcode_alt.php
./includes/class_bbcode.php
./includes/functions_bigthree.php

Hooks Called:

init_startup
init_startup_session_setup_start
init_startup_session_setup_complete
cache_permissions
fetch_threadinfo_query
fetch_threadinfo
fetch_foruminfo
style_fetch
cache_templates
global_start
parse_templates
global_setup_complete
printthread_start
pagenav_page
pagenav_complete
bbcode_fetch_tags
bbcode_create
bbcode_parse_start
bbcode_parse_complete_precache
bbcode_parse_complete
printthread_post
printthread_complete

Messages:

X vBulletin 3.8.12 by vBS Debug Information
Page Generation 0.01052 seconds Memory Usage 1,748KB Queries Executed 10 (?)
More Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (5)bbcode_code_printable (3)bbcode_quote_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)pagenav (1)pagenav_curpage (2)pagenav_pagelink (1)post_thanks_navbar_search (1)printthread (10)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start pagenav_page pagenav_complete bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
Messages: