##############################################################
## MOD Title: GIF Support for web servers with GD >= 2.0.28
## MOD Author: kegobeer < webmaster@kazebeer.com > (Dave Kazebeer) http://www.kazebeer.com
## MOD Description: This mod enables Coppermine to handle non-animated GIF images
## MOD Version: 1.0.0
##
## Installation Level: (Easy)
## Installation Time: 10 Minutes
## Files To Edit: include/picmgmt.inc.php, showthumb.php, upload.php, xp_publish.php, db_input.php
## Included Files: (n/a)
##############################################################
## Author Notes:
##
##############################################################
## MOD History:
##
##   2004-08-28 - Version 1.0.0
##
##############################################################
## Before Adding This MOD To Coppermine, You Should Back Up All Files Related To This MOD
##############################################################

#
#-----[ OPEN ]------------------------------------------
#

include/picmgmt.inc.php

#
#-----[ FIND ]------------------------------------------
#

function resize_image($src_file, $dest_file, $new_size, $method, $thumb_use)
{
    global $CONFIG, $ERROR;
    global $lang_errors;

    $imginfo = getimagesize($src_file);
    if ($imginfo == null)
        return false;
        // GD can only handle JPG & PNG images
    if ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($method == 'gd1' || $method == 'gd2')) {
        $ERROR = $lang_errors['gd_file_type_err'];
        return false;
    }
    
#
#-----[ REPLACE WITH ]------------------------------------------
#

function resize_image($src_file, $dest_file, $new_size, $method, $thumb_use)
{
    global $CONFIG, $ERROR;
    global $lang_errors;

    $imginfo = getimagesize($src_file);
    if ($imginfo == null)
        return false;
    
    // Check for GIF create support >= GD v2.0.28
    $gifsupport = 0;
    if ($method == 'gd2') {
        $gdinfo = gd_info();
        $gifsupport = $gdinfo["GIF Create Support"];
    }
	
    // GD can only handle JPG & PNG images
    if ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($method == 'gd1' || ($method == 'gd2' && !$gifsupport))) {
        $ERROR = $lang_errors['gd_file_type_err'];
        return false;
    }
    
#
#-----[ FIND ]------------------------------------------
#

        case "gd2" :
            if (!function_exists('imagecreatefromjpeg')) {
                cpg_die(CRITICAL_ERROR, 'PHP running on your server does not support the GD image library, check with your webhost if ImageMagick is installed', __FILE__, __LINE__);
            }
            if (!function_exists('imagecreatetruecolor')) {
                cpg_die(CRITICAL_ERROR, 'PHP running on your server does not support GD version 2.x, please switch to GD version 1.x on the config page', __FILE__, __LINE__);
            }
            if ($imginfo[2] == GIS_JPG)
                $src_img = imagecreatefromjpeg($src_file);
            else
                $src_img = imagecreatefrompng($src_file);
            if (!$src_img) {
                $ERROR = $lang_errors['invalid_image'];
                return false;
            }
            
#
#-----[ REPLACE WITH ]------------------------------------------
#

        case "gd2" :
            if (!function_exists('imagecreatefromjpeg')) {
                cpg_die(CRITICAL_ERROR, 'PHP running on your server does not support the GD image library, check with your webhost if ImageMagick is installed', __FILE__, __LINE__);
            }
            if (!function_exists('imagecreatetruecolor')) {
                cpg_die(CRITICAL_ERROR, 'PHP running on your server does not support GD version 2.x, please switch to GD version 1.x on the config page', __FILE__, __LINE__);
            }
            if ($imginfo[2] == GIS_JPG)
                $src_img = imagecreatefromjpeg($src_file);
            else if ($imginfo[2] == GIS_GIF && $gifsupport)
                $src_img = imagecreatefromgif($src_file);
            else
                $src_img = imagecreatefrompng($src_file);
            if (!$src_img) {
                $ERROR = $lang_errors['invalid_image'];
                return false;
            }
            
#
#-----[ OPEN ]------------------------------------------
#

showthumb.php

#
#-----[ FIND ]------------------------------------------
#

function makethumbnail($src_file, $newSize, $method)
{
    global $CONFIG;

    $content_type = array(
        GIS_GIF => 'gif',
        GIS_JPG => 'jpeg',
        GIS_PNG => 'png'
        );
    // Checks that file exists and is readable
    if (!filesize($src_file) || !is_readable($src_file)) {
        header("Content-type: image/gif");
        fpassthru(fopen(READ_ERROR_ICON, 'rb'));
        exit;
    }
    // find the image size, no size => unknow type
    $imginfo = getimagesize($src_file);
    if ($imginfo == null) {
        header("Content-type: image/gif");
        fpassthru(fopen(UNKNOW_ICON, 'rb'));
        exit;
    }
    // GD can't handle gif images
    if ($imginfo[2] == GIS_GIF && ($method == 'gd1' || $method == 'gd2')) {
        header("Content-type: image/gif");
        fpassthru(fopen(GIF_ICON, 'rb'));
        exit;
    }
    
#
#-----[ REPLACE WITH ]------------------------------------------
#

function makethumbnail($src_file, $newSize, $method)
{
    global $CONFIG;

    $content_type = array(
        GIS_GIF => 'gif',
        GIS_JPG => 'jpeg',
        GIS_PNG => 'png'
        );
    // Checks that file exists and is readable
    if (!filesize($src_file) || !is_readable($src_file)) {
        header("Content-type: image/gif");
        fpassthru(fopen(READ_ERROR_ICON, 'rb'));
        exit;
    }
    // find the image size, no size => unknow type
    $imginfo = getimagesize($src_file);
    if ($imginfo == null) {
        header("Content-type: image/gif");
        fpassthru(fopen(UNKNOW_ICON, 'rb'));
        exit;
    }
    
    // Check for GIF create support >= GD v2.0.28
    $gifsupport = 0;
    if ($method == 'gd2') {
        $gdinfo = gd_info();
        $gifsupport = $gdinfo["GIF Create Support"];
	   }
	  
    // GD can't handle gif images
    if ($imginfo[2] == GIS_GIF && ($method == 'gd1' || ($method == 'gd2' && !$gifsupport))) {
        header("Content-type: image/gif");
        fpassthru(fopen(GIF_ICON, 'rb'));
        exit;
    }
    
#
#-----[ FIND ]------------------------------------------
#

        case "gd2" :
            if ($imginfo[2] == GIS_JPG)
                $src_img = imagecreatefromjpeg($src_file);
            else
                $src_img = imagecreatefrompng($src_file);
                
#
#-----[ REPLACE WITH ]------------------------------------------
#

        case "gd2" :
            if ($imginfo[2] == GIS_JPG)
                $src_img = imagecreatefromjpeg($src_file);
            else if ($imginfo[2] == GIS_GIF && $gifsupport)
                $src_img = imagecreatefromgif($src_file);
            else
                $src_img = imagecreatefrompng($src_file);
                
#
#-----[ OPEN ]------------------------------------------
#

upload.php

#
#-----[ FIND ]------------------------------------------
#

// Globalize $CONFIG.
global $CONFIG, $lang_upload_php, $user_form, $max_file_size;

#
#-----[ AFTER, ADD ]------------------------------------------
#

// Check for GIF create support >= GD v2.0.28
$gifsupport = 0;
if ($CONFIG['thumb_method'] == 'gd2') {
    $gdinfo = gd_info();
    $gifsupport = $gdinfo["GIF Create Support"];
}

#
#-----[ FIND ]------------------------------------------
#

                // JPEG and PNG only are allowed with GD. If the image is not allowed for GD,delete it.
                } elseif ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($CONFIG['thumb_method'] == 'gd1' || $CONFIG['thumb_method'] == 'gd2')) {

#
#-----[ REPLACE WITH ]------------------------------------------
#

                // JPEG and PNG only are allowed with GD. If the image is not allowed for GD,delete it.
                } elseif ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($CONFIG['thumb_method'] == 'gd1' || ($CONFIG['thumb_method'] == 'gd2' && !$gifsupport))) {

#
#-----[ FIND ]------------------------------------------
#

                // JPEG and PNG only are allowed with GD. If the image is not allowed for GD,delete it.
                } elseif ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($CONFIG['thumb_method'] == 'gd1' || $CONFIG['thumb_method'] == 'gd2')) {

#
#-----[ REPLACE WITH ]------------------------------------------
#

                // JPEG and PNG only are allowed with GD. If the image is not allowed for GD,delete it.
                } elseif ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($CONFIG['thumb_method'] == 'gd1' || ($CONFIG['thumb_method'] == 'gd2' && !$gifsupport))) {

#
#-----[ OPEN ]------------------------------------------
#

xp_publish.php

#
#-----[ FIND ]------------------------------------------
#

function process_picture()
{
    global $HTTP_POST_VARS, $HTTP_GET_VARS, $HTTP_POST_FILES, $CONFIG, $IMG_TYPES;
    global $lang_db_input_php, $lang_errors;
    
#
#-----[ AFTER, ADD ]------------------------------------------
#

    // Check for GIF create support >= GD v2.0.28
    $gifsupport = 0;
    if ($CONFIG['thumb_method'] == 'gd2') {
        $gdinfo = gd_info();
        $gifsupport = $gdinfo["GIF Create Support"];
    }
    
#
#-----[ FIND ]------------------------------------------
#

        // JPEG and PNG only are allowed with GD
        if ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($CONFIG['thumb_method'] == 'gd1' || $CONFIG['thumb_method'] == 'gd2')) {

#
#-----[ REPLACE WITH ]------------------------------------------
#

        // JPEG and PNG only are allowed with GD
        if ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($CONFIG['thumb_method'] == 'gd1' || ($CONFIG['thumb_method'] == 'gd2' && !$gifsupport))) {

#
#-----[ OPEN ]------------------------------------------
#

db_input.php

#
#-----[ FIND ]------------------------------------------
#

global $CONFIG, $lang_bad_words, $queries;

#
#-----[ AFTER, ADD ]------------------------------------------
#

// Check for GIF create support >= GD v2.0.28
$gifsupport = 0;
if ($CONFIG['thumb_method'] == 'gd2') {
    $gdinfo = gd_info();
    $gifsupport = $gdinfo["GIF Create Support"];
}

#
#-----[ FIND ]------------------------------------------
#

                // JPEG and PNG only are allowed with GD
                } elseif ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($CONFIG['thumb_method'] == 'gd1' || $CONFIG['thumb_method'] == 'gd2')) {

#
#-----[ REPLACE WITH ]------------------------------------------
#

                // JPEG and PNG only are allowed with GD
                } elseif ($imginfo[2] != GIS_JPG && $imginfo[2] != GIS_PNG && ($CONFIG['thumb_method'] == 'gd1' || ($CONFIG['thumb_method'] == 'gd2' && !$gifsupport))) {
#
#-----[ SAVE/CLOSE ALL FILES ]------------------------------------------
#
# EoM