mirror/php-phpbb
1
0
Fork 0
mirror of https://github.com/phpbb/phpbb.git synced 2025-08-29 11:10:18 +02:00
Code Issues Releases Wiki Activity

oh boy...

Browse Source 
- Migrate code base to PHP 5.1+


git-svn-id: file:///svn/phpbb/trunk@8295 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
David M
2008-01-03 17:00:40 +00:00
parent 0f26ffbade
commit 85055ac97f
77 changed files with 827 additions and 3121 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
phpBB/includes/captcha/captcha_non_gd.php
View File

@@ -23,25 +23,15 @@ if (!defined('IN_PHPBB'))
*/
class captcha
{
var $filtered_pngs;
var $width = 320;
var $height = 50;
/**
* Define filtered pngs on init
*/
function captcha()
{
// If we can we will generate a single filtered png, we avoid nastiness via emulation of some Zlib stuff
$this->define_filtered_pngs();
}
const width = 320;
const height = 50;
/**
* Create the image containing $code with a seed of $seed
*/
function execute($code, $seed)
public static function execute($code, $seed)
{
$img_height = $this->height - 10;
$img_height = self::height - 10;
$img_width = 0;
mt_srand($seed);
@@ -49,27 +39,30 @@ class captcha
$char_widths = $hold_chars = array();
$code_len = strlen($code);
// If we can we will generate a single filtered png, we avoid nastiness via emulation of some Zlib stuff
$filtered_pngs = self::define_filtered_pngs();
for ($i = 0; $i < $code_len; $i++)
{
$char = $code[$i];
$width = mt_rand(0, 4);
$raw_width = $this->filtered_pngs[$char]['width'];
$raw_width = $filtered_pngs[$char]['width'];
$char_widths[$i] = $width;
$img_width += $raw_width - $width;
// Split the char into chunks of $raw_width + 1 length
if (empty($hold_chars[$char]))
{
$hold_chars[$char] = str_split(base64_decode($this->filtered_pngs[$char]['data']), $raw_width + 1);
$hold_chars[$char] = str_split(base64_decode($filtered_pngs[$char]['data']), $raw_width + 1);
}
}
$offset_x = mt_rand(0, $this->width - $img_width);
$offset_y = mt_rand(0, $this->height - $img_height);
$offset_x = mt_rand(0, self::width - $img_width);
$offset_y = mt_rand(0, self::height - $img_height);
$image = '';
for ($i = 0; $i < $this->height; $i++)
for ($i = 0; $i < self::height; $i++)
{
$image .= chr(0);
@@ -82,10 +75,10 @@ class captcha
for ($j = 0; $j < $code_len; $j++)
{
$image .= $this->randomise(substr($hold_chars[$code{$j}][$i - $offset_y - 1], 1), $char_widths[$j]);
$image .= self::randomise(substr($hold_chars[$code{$j}][$i - $offset_y - 1], 1), $char_widths[$j]);
}
for ($j = $offset_x + $img_width; $j < $this->width; $j++)
for ($j = $offset_x + $img_width; $j < self::width; $j++)
{
$image .= chr(mt_rand(140, 255));
}
@@ -100,13 +93,12 @@ class captcha
}
unset($hold_chars);
$image = $this->create_png($image, $this->width, $this->height);
$image = self::create_png($image, $this->width, $this->height);
// Output image
header('Content-Type: image/png');
header('Cache-control: no-cache, no-store');
echo $image;
exit;
}
/**
@@ -114,14 +106,14 @@ class captcha
* certain limits so as to keep it readable. It also varies the image
* width a little
*/
function randomise($scanline, $width)
private static function randomise($scanline, $width)
{
$new_line = '';
$end = strlen($scanline) - ceil($width/2);
for ($i = floor($width/2); $i < $end; $i++)
$end = strlen($scanline) - ceil($width / 2);
for ($i = $width >> 1; $i < $end; $i++)
{
$pixel = ord($scanline{$i});
$pixel = ord($scanline[$i]);
if ($pixel < 190)
{
@@ -144,7 +136,7 @@ class captcha
* This creates a chunk of the given type, with the given data
* of the given length adding the relevant crc
*/
function png_chunk($length, $type, $data)
private static function png_chunk($length, $type, $data)
{
$raw = $type . $data;
@@ -165,7 +157,7 @@ class captcha
// IHDR
$raw = pack('N2', $width, $height);
$raw .= pack('C5', 8, 0, 0, 0, 0);
$image .= $this->png_chunk(13, 'IHDR', $raw);
$image .= self::png_chunk(13, 'IHDR', $raw);
// IDAT
if (@extension_loaded('zlib'))
@@ -226,10 +218,10 @@ class captcha
}
// IDAT
$image .= $this->png_chunk($length, 'IDAT', $raw_image);
$image .= self::png_chunk($length, 'IDAT', $raw_image);
// IEND
$image .= $this->png_chunk(0, 'IEND', '');
$image .= self::png_chunk(0, 'IEND', '');
return $image;
}
@@ -238,7 +230,7 @@ class captcha
* png image data
* Each 'data' element is base64_encoded uncompressed IDAT
*/
function define_filtered_pngs()
private static function define_filtered_pngs()
{
$this->filtered_pngs = array(
'0' => array(