Browse Source

增强验证码识别难度

tags/6.0.0
tianya 3 years ago
parent
commit
f2c1d3ea2e
7 changed files with 83 additions and 71 deletions
  1. BIN
      src/include/data/fonts/1.ttf
  2. BIN
      src/include/data/fonts/2.ttf
  3. BIN
      src/include/data/fonts/3.ttf
  4. BIN
      src/include/data/fonts/4.ttf
  5. BIN
      src/include/data/fonts/5.ttf
  6. +0
    -0
      src/include/data/fonts/6.ttf
  7. +83
    -71
      src/plus/vdimgck.php

BIN
src/include/data/fonts/1.ttf View File


BIN
src/include/data/fonts/2.ttf View File


BIN
src/include/data/fonts/3.ttf View File


BIN
src/include/data/fonts/4.ttf View File


BIN
src/include/data/fonts/5.ttf View File


src/include/data/fonts/ggbi.ttf → src/include/data/fonts/6.ttf View File


+ 83
- 71
src/plus/vdimgck.php View File

@@ -1,4 +1,5 @@
<?php
/**
* 验证图片
*
@@ -8,35 +9,37 @@
* @license http://help.dedecms.com/usersguide/license.html
* @link http://www.dedecms.com
*/
require_once (dirname(__FILE__).'/../include/common.inc.php');
require_once (DEDEDATA.'/safe/inc_safe_config.php');
require_once (DEDEDATA.'/config.cache.inc.php');
require_once(dirname(__FILE__) . '/../include/common.inc.php');
require_once(DEDEDATA . '/safe/inc_safe_config.php');
require_once(DEDEDATA . '/config.cache.inc.php');
$config = array(
'font_size' => 14,
'font_size' => 20,
'img_height' => $safe_wheight,
'word_type' => (int)$safe_codetype, // 1:数字 2:英文 3:单词
'word_type' => (int)$safe_codetype, // 1:数字 2:英文 3:单词
'img_width' => $safe_wwidth,
'use_boder' => TRUE,
'font_file' => DEDEINC.'/data/fonts/'.mt_rand(1,3).'.ttf',
'wordlist_file' => DEDEINC.'/data/words/words.txt',
'filter_type' => 5);
'font_file' => DEDEINC . '/data/fonts/' . mt_rand(1, 6) . '.ttf',
'wordlist_file' => DEDEINC . '/data/words/words.txt',
'filter_type' => 5
);
$enkey = substr(md5(substr($cfg_cookie_encode,0,5)),0,10);
$sessSavePath = DEDEDATA."/sessions_{$enkey}";
if ( !is_dir($sessSavePath) ) mkdir($sessSavePath);
$enkey = substr(md5(substr($cfg_cookie_encode, 0, 5)), 0, 10);
$sessSavePath = DEDEDATA . "/sessions_{$enkey}";
if (!is_dir($sessSavePath)) mkdir($sessSavePath);
// Session保存路径
if(is_writeable($sessSavePath) && is_readable($sessSavePath)){ session_save_path($sessSavePath); }
if(!empty($cfg_domain_cookie)) session_set_cookie_params(0,'/',$cfg_domain_cookie);
if (is_writeable($sessSavePath) && is_readable($sessSavePath)) {
session_save_path($sessSavePath);
}
if (!empty($cfg_domain_cookie)) session_set_cookie_params(0, '/', $cfg_domain_cookie);
if (!echo_validate_image($config))
{
if (!echo_validate_image($config)) {
// 如果不成功则初始化一个默认验证码
@session_start();
$_SESSION['securimage_code_value'] = strtolower('abcd');
if (function_exists('imagecreatefromjpeg')) {
$im = @imagecreatefromjpeg(DEDEINC.'/data/vdcode.jpg');
$im = @imagecreatefromjpeg(DEDEINC . '/data/vdcode.jpg');
header("Pragma:no-cache\r\n");
header("Cache-Control:no-cache\r\n");
header("Expires:0\r\n");
@@ -46,34 +49,34 @@ if (!echo_validate_image($config))
header("Pragma:no-cache\r\n");
header("Cache-Control:no-cache\r\n");
header("Expires:0\r\n");
$c = file_get_contents(DEDEINC.'/data/vdcode.jpg',true);
$size = filesize(DEDEINC.'/data/vdcode.jpg');
header ('Content-Type: image/x-icon');
header ("Content-length: $size");
$c = file_get_contents(DEDEINC . '/data/vdcode.jpg', true);
$size = filesize(DEDEINC . '/data/vdcode.jpg');
header('Content-Type: image/x-icon');
header("Content-length: $size");
echo $c;
}
}
function echo_validate_image( $config = array() )
function echo_validate_image($config = array())
{
@session_start();
if ( !function_exists('imagettftext') )
{
if (!function_exists('imagettftext')) {
return false;
}
//主要参数
$font_size = isset($config['font_size']) ? $config['font_size'] : 14;
$img_height = isset($config['img_height']) ? $config['img_height'] : 24;
$img_height = isset($config['img_height']) ? $config['img_height'] : 38;
$img_width = isset($config['img_width']) ? $config['img_width'] : 68;
$font_file = isset($config['font_file']) ? $config['font_file'] : DEDEINC.'/data/font/'.mt_rand(1,3).'.ttf';
$font_file = isset($config['font_file']) ? $config['font_file'] : DEDEINC . '/data/font/' . mt_rand(1, 6) . '.ttf';
$use_boder = isset($config['use_boder']) ? $config['use_boder'] : TRUE;
$filter_type = isset($config['filter_type']) ? $config['filter_type'] : 0;
//创建图片,并设置背景色
$im = @imagecreate($img_width, $img_height);
imagecolorallocate($im, 255,255,255);
imagecolorallocate($im, mt_rand(200, 255), mt_rand(200, 255), mt_rand(200, 255));
//文字随机颜色
$fontColor[] = imagecolorallocate($im, 0x15, 0x15, 0x15);
@@ -84,27 +87,23 @@ function echo_validate_image( $config = array() )
//获取随机字符
$rndstring = '';
if ($config['word_type'] != 3)
{
for($i=0; $i<4; $i++)
{
if ($config['word_type'] == 1)
{
if ($config['word_type'] != 3) {
for ($i = 0; $i < 4; $i++) {
if ($config['word_type'] == 1) {
$c = chr(mt_rand(48, 57));
} else if($config['word_type'] == 2)
{
} else if ($config['word_type'] == 2) {
$c = chr(mt_rand(65, 90));
if( $c=='I' ) $c = 'P';
if( $c=='O' ) $c = 'N';
if ($c == 'I') $c = 'P';
if ($c == 'O') $c = 'N';
}
$rndstring .= $c;
}
} else {
$chars='abcdefghigklmnopqrstuvwxwyABCDEFGHIGKLMNOPQRSTUVWXWY0123456789';
$rndstring='';
$length = rand(4,4);
$chars = 'abcdefghigklmnopqrstuvwxwyABCDEFGHIGKLMNOPQRSTUVWXWY0123456789';
$rndstring = '';
$length = rand(4, 4);
$max = strlen($chars) - 1;
for($i = 0; $i < $length; $i++) {
for ($i = 0; $i < $length; $i++) {
$rndstring .= $chars[mt_rand(0, $max)];
}
}
@@ -113,51 +112,67 @@ function echo_validate_image( $config = array() )
$rndcodelen = strlen($rndstring);
//背景横线
$lineColor1 = imagecolorallocate($im, 0xda, 0xd9, 0xd1);
for($j=3; $j<=$img_height-3; $j=$j+3)
{
imageline($im, 2, $j, $img_width - 2, $j, $lineColor1);
// //背景横线
// $lineColor1 = imagecolorallocate($im, 0xda, 0xd9, 0xd1);
// for ($j = 3; $j <= $img_height - 3; $j = $j + 3) {
// imageline($im, 2, $j, $img_width - 2, $j, $lineColor1);
// }
// //背景竖线
// $lineColor2 = imagecolorallocate($im, 0xda, 0xd9, 0xd1);
// for ($j = 2; $j < 100; $j = $j + 6) {
// imageline($im, $j, 0, $j + 8, $img_height, $lineColor2);
// }
// 增加一些噪线
for ($i=0; $i < 5; $i++) {
$red = mt_rand(50, 255);
$green = mt_rand(50, 255);
$blue = mt_rand(50, 255);
$tcol = imagecolorallocate($im, $red, $green, $blue);
if (mt_rand(0, 1)) { // Horizontal
$Xa = mt_rand(0, $img_width/2);
$Ya = mt_rand(0, $img_height);
$Xb = mt_rand($img_width/2, $img_width);
$Yb = mt_rand(0, $img_height);
} else { // Vertical
$Xa = mt_rand(0, $img_width);
$Ya = mt_rand(0, $img_height/2);
$Xb = mt_rand(0, $img_width);
$Yb = mt_rand($img_height/2, $img_height);
}
imagesetthickness($im, mt_rand(1, 3));
imageline($im, $Xa, $Ya, $Xb, $Yb, $tcol);
}
//背景竖线
$lineColor2 = imagecolorallocate($im, 0xda,0xd9,0xd1);
for($j=2;$j<100;$j=$j+6)
{
imageline($im, $j, 0, $j+8, $img_height, $lineColor2);
}
//画边框
if( $use_boder && $filter_type == 0 )
{
if ($use_boder && $filter_type == 0) {
$bordercolor = imagecolorallocate($im, 0x9d, 0x9e, 0x96);
imagerectangle($im, 0, 0, $img_width-1, $img_height-1, $bordercolor);
imagerectangle($im, 0, 0, $img_width - 1, $img_height - 1, $bordercolor);
}
//输出文字
$lastc = '';
for($i=0;$i<$rndcodelen;$i++)
{
$bc = mt_rand(0, 1);
for ($i = 0; $i < $rndcodelen; $i++) {
$rndstring[$i] = strtoupper($rndstring[$i]);
$c_fontColor = $fontColor[mt_rand(0,4)];
$y_pos = $i==0 ? 4 : $i*($font_size+2);
$c = mt_rand(0, 15);
@imagettftext($im, $font_size, $c, $y_pos, 19, $c_fontColor, $font_file, $rndstring[$i]);
$c_fontColor = $fontColor[mt_rand(0, 4)];
$y_pos = $i == 0 ? 4 : $i * ($font_size + 2);
$c = mt_rand(10, 30);
@imagettftext($im, $font_size, $c, $y_pos, 28, $c_fontColor, $font_file, $rndstring[$i]);
$lastc = $rndstring[$i];
}
//图象效果
switch($filter_type)
{
switch ($filter_type) {
case 1:
imagefilter ( $im, IMG_FILTER_NEGATE);
imagefilter($im, IMG_FILTER_NEGATE);
break;
case 2:
imagefilter ( $im, IMG_FILTER_EMBOSS);
imagefilter($im, IMG_FILTER_EMBOSS);
break;
case 3:
imagefilter ( $im, IMG_FILTER_EDGEDETECT);
imagefilter($im, IMG_FILTER_EDGEDETECT);
break;
default:
break;
@@ -170,13 +185,10 @@ function echo_validate_image( $config = array() )
//输出特定类型的图片格式,优先级为 gif -> jpg ->png
//dump(function_exists("imagejpeg"));
if(function_exists("imagejpeg"))
{
if (function_exists("imagejpeg")) {
header("content-type:image/jpeg\r\n");
imagejpeg($im);
}
else
{
} else {
header("content-type:image/png\r\n");
imagepng($im);
}


Loading…
Cancel
Save