主題: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: twu2 於 十月 16, 2006, 01:33:37 下午
在 PHPBB 有一個 Better Captcha MOD, 所產生的識別碼圖形, 並不會像 FreeCap 所產生的那般, 十分難辨識. 而 LifeType 本身的 AuthImage 所產生的圖形, 又太有規律. 所以, 打算讓 AuthImage 產生圖形的方式, 用 Better Captcha 方式來產生. 首先, 先到這兒抓取 Better Captcha. 抓回解開之後, 把 fonts 這個目錄放到 authimage 的目錄下頭. 然後修改 pluginauthimage.class.php 如下: --- authimage.old/pluginauthimage.class.php 2006-07-05 10:19:57.000000000 +0800
+++ authimage/pluginauthimage.class.php 2006-10-16 14:20:28.744067612 +0800
@@ -8,7 +8,10 @@
define( "AUTHIMAGE_FILE", "/plugins/authimage/authimage.php" );
define( "AUTHIMAGE_BACKGROUND_FOLDER", PLOG_CLASS_PATH."plugins/authimage/backgrounds/" );
-
+// twu2 20061016 begin
+ define( "AUTHIMAGE_FONT_FOLDER", PLOG_CLASS_PATH."plugins/authimage/fonts/" );
+// twu2 20061016 end
+
/**
* Plugin that offers comment authentication image for current blog
* Original Author: Gudlyf http://www.gudlyf.com/index.php?p=376
@@ -93,8 +96,9 @@
function show() {
$authImageUrl = $this->generateImageUrl();
+ //return '<img src="'.$authImageUrl.'" style="vertical-align:middle;" width="70px" height="20px" alt="authimage" />';
if ( $authImageUrl )
- return '<img src="'.$authImageUrl.'" style="vertical-align:middle;" width="70px" height="20px" alt="authimage" />';
+ return '<img src="'.$authImageUrl.'" style="vertical-align:middle;" alt="authimage" />';
else
return 'You don\'t have GD support compiled in, we cannot create an authimage. Please activate GD Support.';
}
@@ -103,6 +107,16 @@
// Delete those cached authimage files that never used
$this->deleteExpiredAuthImage($this->expiredTime);
+// twu2 20061016 begin
+ $code = $this->generateCode();
+ $encrypt = $this->encrypt($code, $this->key);
+ if ( function_exists ( 'ImageGIF' ) )
+ $image_format = 'gif';
+ else
+ $image_format = 'png';
+ $tempFile = $this->cacheFolder."/".$encrypt.".".$image_format;
+ $this->captcha_createimage($code, $image_format, $tempFile);
+/* old method for image
$code = $this->generateCode();
$encrypt = $this->encrypt($code, $this->key);
$background = AUTHIMAGE_BACKGROUND_FOLDER.$this->default;
@@ -125,6 +139,8 @@
} else {
ImageGIF($image, $tempFile);
}
+*/
+// twu2 20061016 end
$temp = fopen($tempFile,"rb");
$buffer = fread($temp,filesize($tempFile));
fclose($temp);
@@ -137,7 +153,10 @@
// Now chmod it so it can be deleted later by the user
chmod($tempFile, 0666);
- header("Content-type: image/gif");
+// twu2 20061016 begin
+ //header("Content-type: image/gif");
+ header("Content-type: image/".$image_format);
+// twu2 20061016 end
echo $buffer;
}
@@ -150,7 +169,14 @@
function generateCode() {
$code = "";
- for($i=0; $i < $this->length; $i++) $code .= rand(0,9);
+// twu2 20061016 begin
+ //for($i=0; $i < $this->length; $i++) $code .= rand(0,9);
+ //$hash = "0123456789";
+ //$hash = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+ $hash = "0123456789ABCDEFGHKMNPQRWXYZ";
+ $len = strlen($hash) - 1;
+ for($i=0; $i < $this->length; $i++) $code .= $hash[rand(0,$len)];
+// twu2 20061016 end
return $code;
}
@@ -168,6 +194,135 @@
closedir($handle);
}
}
+
+// twu2 20061016 begin
+ function captcha_createimage($code, $image_format, $tempFile)
+ {
+ $breedte = rand(256, 384);
+ $hoogte = rand(64, 96);
+ $img = imagecreatetruecolor($breedte,$hoogte);
+ $achtergrond = imagecolorallocate($img, $this->captcha_color("bg"), $this->captcha_color("bg"), $this->captcha_color("bg"));
+
+ imagefilledrectangle($img, 0, 0, $breedte-1, $hoogte-1, $achtergrond);
+ $hash = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+ $hash_len = strlen($hash);
+ for($g = 0;$g < 30; $g++)
+ {
+ $t = $hash[rand(0, $hash_len)];
+
+ $ypos = rand(0,$hoogte);
+ $xpos = rand(0,$breedte);
+
+ $kleur = imagecolorallocate($img, $this->captcha_color("bgtekst"), $this->captcha_color("bgtekst"), $this->captcha_color("bgtekst"));
+
+ if (!($g % 2))
+ {
+ $scribx = rand(0,($breedte*2));
+ $scriby = rand(0,($hoogte*2));
+
+ $wibblex = rand(0,($breedte*2));
+ $wibbley = rand(0,($hoogte*2));
+
+ imageline($img, rand(0, $scribx-$xpos), rand(0, $scriby+$ypos), rand(0, $wibblex), rand(0, $wibbley), $kleur+$g);
+ imageellipse($img, rand(0, $scribx+$xpos), rand(0, $scriby-$ypos), rand(0, $scriby), rand(0, $scribx), $kleur-$g);
+ }
+
+ imagettftext($img, $this->captcha_size(), $this->captcha_move(), $xpos, $ypos, $kleur, $this->captcha_font(), $t);
+ }
+ $stukje = $breedte / (strlen($code) + 3);
+
+ for($j = 0;$j < strlen($code); $j++)
+ {
+ $tek = $code[$j];
+ $ypos = rand(32,$hoogte-8);
+ $xpos = $stukje * ($j+2);
+
+ $kleur2 = imagecolorallocate($img, $this->captcha_color("tekst"), $this->captcha_color("tekst"), $this->captcha_color("tekst"));
+
+ imagettftext($img, $this->captcha_size(), $this->captcha_move(), $xpos, $ypos, $kleur2, $this->captcha_font() , $tek);
+ }
+
+ if ($image_format == 'gif')
+ imagegif($img, $tempFile);
+ else
+ imagepng($img, $tempFile);
+ imagedestroy($img);
+ }
+
+ /**
+ * Some functions :)
+ * Also orginally written by mastercode.nl
+ **/
+ /**
+ * Function to create a random color
+ * @auteur mastercode.nl
+ * @param $type string Mode for the color
+ * @return int
+ **/
+ function captcha_color($type)
+ {
+ switch($type)
+ {
+ case "bg":
+ $kleur = rand(224,255);
+ break;
+ case "tekst":
+ $kleur = rand(0,127);
+ break;
+ case "bgtekst":
+ $kleur = rand(200,224);
+ break;
+ default:
+ $kleur = rand(0,255);
+ break;
+ }
+ return $kleur;
+ }
+ /**
+ * Function to ranom the size
+ * @auteur mastercode.nl
+ * @return int
+ **/
+ function captcha_size()
+ {
+ $grootte = rand(24,32);
+ return $grootte;
+ }
+ /**
+ * Function to random the posistion
+ * @auteur mastercode.nl
+ * @return int
+ **/
+ function captcha_move()
+ {
+ $draai = rand(-25,25);
+ return $draai;
+ }
+ /**
+ * Function to return a ttf file from fonts map
+ * @auteur mastercode.nl
+ * @return string
+ **/
+ function captcha_font()
+ {
+ $f = @opendir(AUTHIMAGE_FONT_FOLDER);
+ $ar = array();
+ while(($file = @readdir($f)) !== false)
+ {
+ if(!in_array($file,array('.','..')) && eregi('.ttf',$file))
+ {
+ $ar[] = $file;
+ }
+ }
+ if(count($ar))
+ {
+ shuffle($ar);
+ $i = rand(0,(count($ar) - 1));
+ return AUTHIMAGE_FONT_FOLDER . $ar[$i];
+ }
+ }
+// twu2 20061016 end
+
}
?>
patch 可以到這兒抓: http://www.teatime.com.tw/~tommy/mypatch/lifetype_authimage_better_captcha.patch 我修改了 generateCode() 的部份, 讓出現的字串為數字與大寫的英文字母, 但是把其中幾個比較容易弄錯的字母移除. 如果你想修改出現的字串, 請修改這個 function 內的 $hash 變數值就可以.
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: jerome 於 十月 16, 2006, 08:13:17 下午
謝謝您！
晚一點試試看
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: jerome 於 十月 16, 2006, 09:32:00 下午
twu2 所言的 字形，在這裡可以下載
http://sourceforge.net/project/showfiles.php?group_id=145622&package_id=187309
然後 twu2 兄改的，是 LT 1.1 版用的 AuthImage :-)
不是 1.0x 用的 :'( :'(
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: twu2 於 十月 17, 2006, 07:25:15 上午
我記得 1.0 到 1.1 中間, plugins 的寫法只有一點點差別.
我改的部份應該是完全沒有動到那些部份. 應該 1.0 的也可以用才對.
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: perlish 於 三月 11, 2007, 07:53:34 上午
不错的东西
现在spam真的很烦
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: perlish 於 三月 11, 2007, 09:16:26 上午
1.0的貌似还真用着有问题
我手动patch了一下
之后发现下面错误
Call to undefined function: generateimageurl() in pluginauthimage.class.php on line 89
看来得下个1.1的imageauth回来把这个函数抠出来才行
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: perlish 於 三月 11, 2007, 09:39:58 上午
补上缺少的函数后，还是有问题
Fatal error: Call to undefined function: imagettftext() in
十分奇怪
我下载了authimage 1.1 plugin和lt 1.1.6的代码包回来搜索，没有搜索到这个函数。
google搜索了一下，发现是php内置的函数，继续解决中……
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: perlish 於 三月 11, 2007, 10:19:59 上午
编译php的时候加如下参数就好了
--with-gd
--enable-gd-native-ttf
--with-png
--with-zlib-dir=/usr/
--with-ttf
--with-jpeg-dir=/usr/
--with-freetype-dir=/usr/
--with-xpm-dir=/usr/X11R6/
这个是debian里的，其他发行版估计位置会不一样
感谢twu2的插件
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: perlish 於 三月 11, 2007, 10:28:38 上午
这个是我改好的for 1.0的pluginauthimage.class.php文件，有需要的朋友可以直接拿来用了，数字1有时有点难看，我也去掉了 <?php
include_once( PLOG_CLASS_PATH."class/plugin/pluginbase.class.php" );
include_once( PLOG_CLASS_PATH."class/plugin/pluginmanager.class.php" );
include_once( PLOG_CLASS_PATH."class/dao/model.class.php" );
include_once( PLOG_CLASS_PATH."class/net/rawrequestgenerator.class.php" );
include_once( PLOG_CLASS_PATH."class/misc/glob.class.php" );
include_once( PLOG_CLASS_PATH."plugins/authimage/class/security/authimagefilter.class.php" );
define( "AUTHIMAGE_FILE", "/plugins/authimage/authimage.php" );
define( "AUTHIMAGE_BACKGROUND_FOLDER", PLOG_CLASS_PATH."plugins/authimage/backgrounds/" );
// twu2 20061016 begin
define( "AUTHIMAGE_FONT_FOLDER", PLOG_CLASS_PATH."plugins/authimage/fonts/" );
// twu2 20061016 end
/**
* Plugin that offers comment authentication image for current blog
* Original Author: Gudlyf http://www.gudlyf.com/index.php?p=376
* Modified by: Mark Wu
*/
class PluginAuthImage extends PluginBase
{
var $pluginEnabled;
var $default;
var $cacheFolder;
function PluginAuthImage()
{
$this->PluginBase();
$this->id = "authimage";
$this->author = "Mark Wu";
$this->desc = 'This plugin offers extra comment authentication for pLog. The idea is inspired by <a href="http://www.gudlyf.com/index.php?p=376">WordPress AuthImage Plugin</a> written by Gudlyf.';
$this->locales = Array( "en_UK" , "zh_TW" , "zh_CN", "es_ES" );
$this->init();
}
function init()
{
// register the filter
$this->registerFilter( "AuthImageFilter" );
$this->registerAdminAction( "authimage", "PluginAuthImageConfigAction" );
$this->registerAdminAction( "updateAuthImageConfig", "PluginAuthImageUpdateConfigAction" );
$this->registerBlogAction( "AuthImageShow", "PluginAuthImageShowAction" );
$menu =& Menu::getMenu();
if( !$menu->entryExists( "/menu/controlCenter/manageAntiSpamPlugins" ))
$this->addMenuEntry( "/menu/controlCenter", "manageAntiSpamPlugins", "", "", true, false );
$this->addMenuEntry( "/menu/controlCenter/manageAntiSpamPlugins", "AuthImage", "?op=authimage", "" );
}
function register()
{
$config =& Config::getConfig();
$this->cacheFolder = $config->getValue('temp_folder');
$this->cacheFolder = $this->cacheFolder.'/authimage/'.$this->blogInfo->getId();
if( !File::exists( $this->cacheFolder )) {
File::createDir( $this->cacheFolder );
}
$blogSettings = $this->blogInfo->getSettings();
$this->pluginEnabled = $blogSettings->getValue( "plugin_authimage_enabled" );
$this->length = $blogSettings->getValue( "plugin_authimage_length" );
$this->key = $blogSettings->getValue( "plugin_authimage_key" );
$this->default = $blogSettings->getValue( "plugin_authimage_default" );
}
function isEnabled()
{
return $this->pluginEnabled;
}
function pluginTemplatePage( $template )
{
$rg = new RawRequestGenerator($this->blogInfo);
$rg->addParameter( "op", "AuthImageShow" );
$rg->addParameter( "blogId", $this->blogInfo->getId());
$templatePage = $rg->getIndexUrl().$rg->getRequest();
return $templatePage;
}
function show() {
$authImageUrl = $this->generateImageUrl();
$authImage = $this->pluginTemplatePage( "authimage" );
if ( $authImageUrl )
return '<img src="'.$authImageUrl.'" style="vertical-align:middle;" alt="authimage" />';
else
return ' you did not have gd support';
}
function showImage() {
// twu2 20061016 begin
$code = $this->generateCode();
$encrypt = $this->encrypt($code, $this->key);
if ( function_exists ( 'ImageGIF' ) )
$image_format = 'gif';
else
$image_format = 'png';
$tempFile = $this->cacheFolder."/".$encrypt.".".$image_format;
$this->captcha_createimage($code, $image_format, $tempFile);
/* $code = $this->generateCode();
$encrypt = $this->encrypt($code, $this->key);
$background = AUTHIMAGE_BACKGROUND_FOLDER.$this->default;
$tempFile = $this->cacheFolder."/".$encrypt.".gif";
if(function_exists ( 'imagecreatefromgif' )){
$image = @imagecreatefromgif($background) or die("Cannot Initialize new GD image stream");
}
else if(function_exists ( 'imagecreatefrompng' )){
$image = @imagecreatefrompng($background) or die("Cannot Initialize new GD image stream");
} else {
die("Server doesn't support GIF or PNG creation. Sorry.");
}
$textColor = imageColorAllocate($image, 0x00, 0x00, 0x00);
ImageString($image, 5, 7, 2, $code, $textColor);
if ( !function_exists ( 'ImageGIF' ) ) {
ImagePNG($image, $tempFile);
} else {
ImageGIF($image, $tempFile);
} */
$temp = fopen($tempFile,"rb");
$buffer = fread($temp,filesize($tempFile));
fclose($temp);
// Now zero-length the file. No need for its content anymore.
$temp = fopen($tempFile,"w");
fwrite($temp, NULL);
fclose($temp);
// Now chmod it so it can be deleted later by the user
chmod($tempFile, 0666);
// twu2 20061016 begin
//header("Content-type: image/gif");
header("Content-type: image/".$image_format);
// twu2 20061016 end
echo $buffer;
}
// encrypt string
function encrypt($string, $key) {
$plainText = $string.$key;
$encodeText = md5($plainText);
return $encodeText;
}
function generateCode() {
$code = "";
// twu2 20061016 begin
//for($i=0; $i < $this->length; $i++) $code .= rand(0,9);
//$hash = "0123456789";
//$hash = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$hash = "03456789ABCDEFGHKMNPQRWXYZ";
$len = strlen($hash) - 1;
for($i=0; $i < $this->length; $i++) $code .= $hash[rand(0,$len)];
// twu2 20061016 end
return $code;
}
function deleteExpiredAuthImage( $expiretime ) {
$path = PLOG_CLASS_PATH . $this->cacheFolder;
if ( is_dir($path) )
{
$handle=opendir($path);
while (false!==($file = readdir($handle))) {
if ($file != "." && $file != ".." && $file != "index.htm") {
$diff = time() - filectime("$path/$file");
if ($diff > $expiretime) unlink("$path/$file");
}
}
closedir($handle);
}
}
// twu2 20061016 begin
function captcha_createimage($code, $image_format, $tempFile)
{
$breedte = rand(256, 384);
$hoogte = rand(64, 96);
$img = imagecreatetruecolor($breedte,$hoogte);
$achtergrond = imagecolorallocate($img, $this->captcha_color("bg"), $this->captcha_color("bg"), $this->captcha_color("bg"));
imagefilledrectangle($img, 0, 0, $breedte-1, $hoogte-1, $achtergrond);
$hash = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
$hash_len = strlen($hash);
for($g = 0;$g < 30; $g++)
{
$t = $hash[rand(0, $hash_len)];
$ypos = rand(0,$hoogte);
$xpos = rand(0,$breedte);
$kleur = imagecolorallocate($img, $this->captcha_color("bgtekst"), $this->captcha_color("bgtekst"),
$this->captcha_color("bgtekst"));
if (!($g % 2))
{
$scribx = rand(0,($breedte*2));
$scriby = rand(0,($hoogte*2));
$wibblex = rand(0,($breedte*2));
$wibbley = rand(0,($hoogte*2));
imageline($img, rand(0, $scribx-$xpos), rand(0, $scriby+$ypos), rand(0, $wibblex), rand(0, $wibbley), $kleur+$g);
imageellipse($img, rand(0, $scribx+$xpos), rand(0, $scriby-$ypos), rand(0, $scriby), rand(0, $scribx), $kleur-$g);
}
imagettftext($img, $this->captcha_size(), $this->captcha_move(), $xpos, $ypos, $kleur, $this->captcha_font(), $t);
}
$stukje = $breedte / (strlen($code) + 3);
for($j = 0;$j < strlen($code); $j++)
{
$tek = $code[$j];
$ypos = rand(32,$hoogte-8);
$xpos = $stukje * ($j+2);
$kleur2 = imagecolorallocate($img, $this->captcha_color("tekst"), $this->captcha_color("tekst"),
$this->captcha_color("tekst"));
imagettftext($img, $this->captcha_size(), $this->captcha_move(), $xpos, $ypos, $kleur2, $this->captcha_font() , $tek);
}
if ($image_format == 'gif')
imagegif($img, $tempFile);
else
imagepng($img, $tempFile);
imagedestroy($img);
}
/**
* Some functions :)
* Also orginally written by mastercode.nl
**/
/**
* Function to create a random color
* @auteur mastercode.nl
* @param $type string Mode for the color
* @return int
**/
function captcha_color($type)
{
switch($type)
{
case "bg":
$kleur = rand(224,255);
break;
case "tekst":
$kleur = rand(0,127);
break;
case "bgtekst":
$kleur = rand(200,224);
break;
default:
$kleur = rand(0,255);
break;
}
return $kleur;
}
/**
* Function to ranom the size
* @auteur mastercode.nl
* @return int
**/
function captcha_size()
{
$grootte = rand(24,32);
return $grootte;
}
/**
* Function to random the posistion
* @auteur mastercode.nl
* @return int
**/
function captcha_move()
{
$draai = rand(-25,25);
return $draai;
}
function generateImageUrl()
{
$rg = new RawRequestGenerator($this->blogInfo);
$rg->addParameter( "op", "AuthImageShow" );
$rg->addParameter( "blogId", $this->blogInfo->getId());
$imageUrl = $rg->getIndexUrl().$rg->getRequest();
if ( !function_exists ('gd_info') ) {
// We don't have gd support compiled in, lets
// inform the user about it
return false;
}
return
$imageUrl;
}
/**
* Function to return a ttf file from fonts map
* @auteur mastercode.nl
* @return string
**/
function captcha_font()
{
$f = @opendir(AUTHIMAGE_FONT_FOLDER);
$ar = array();
while(($file = @readdir($f)) !== false)
{
if(!in_array($file,array('.','..')) && eregi('.ttf',$file))
{
$ar[] = $file;
}
}
if(count($ar))
{
shuffle($ar);
$i = rand(0,(count($ar) - 1));
return AUTHIMAGE_FONT_FOLDER . $ar[$i];
}
}
// twu2 20061016 end
}
?>
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: jerome 於 三月 11, 2007, 01:23:30 下午
这个是我改好的for 1.0的pluginauthimage.class.php文件，有需要的朋友可以直接拿来用了， 謝謝您！
主題: Re: 修改 LifeType 的 AuthImage, 使用 Better Captcha 的圖形
作者: perlish 於 三月 12, 2007, 07:52:30 上午
不客气的
纯粹的体力活 ：）
|