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captcha improved

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Dro1d.Ru 2018-05-04 23:01:14 +05:00
parent 24cd4d6c7d
commit 570c06ae65
4 changed files with 15 additions and 4 deletions
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assets/fonts/luxisr.ttf Normal file
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assets/fonts/yudit.ttf Normal file
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2
const.php
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@ -32,7 +32,7 @@ const LOG_ERRORS = true;
const CAPTCHA_WIDTH = 120;
const CAPTCHA_HEIGHT = 40;
const CAPTCHA_NAME = 'captcha';
const CAPTCHA_FONT = 'Lobster';
const CAPTCHA_FONT = 'yudit';
const CAPTCHA_SLEEP_TIME = 60;
const CAPTCHA_SLEEP_MAX_REQUESTS = 10;
const CRON_MIN_INTERVAL = 3600;

17
zira/form/form.php
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@ -247,7 +247,7 @@ class Form {
$digit1 = rand(1,9);
$digit2 = rand(1,9);
$result = $digit1 + $digit2;
$result = $digit1 * $digit2;
Session::set(self::getFieldName($token, CAPTCHA_NAME),$result);
$image = imagecreatetruecolor(CAPTCHA_WIDTH,CAPTCHA_HEIGHT);
@ -272,7 +272,7 @@ class Form {
imagestring($image,$size,CAPTCHA_WIDTH/5+(CAPTCHA_WIDTH/5-$size)/2,(CAPTCHA_HEIGHT-$size)/2+$size/4,$digit1,$color);
}
$sign = '+';
$sign = 'x';
$color= imagecolorallocate($image, rand(0,155), rand(0,155), rand(0,155));
try {
imagettftext($image,$size,rand(-5,5),CAPTCHA_WIDTH*2/5+(CAPTCHA_WIDTH/5-$size)/2,CAPTCHA_HEIGHT-(CAPTCHA_HEIGHT-$size)/2,$color,$captcha_font,$sign);
@ -295,7 +295,18 @@ class Form {
imagestring($image,$size,CAPTCHA_WIDTH*4/5+(CAPTCHA_WIDTH/5-$size)/2,(CAPTCHA_HEIGHT-$size)/2+$size/4,$sign,$color);
}
imagejpeg($image,null,90);
for ($i=0;$i<20;$i++) {
$color= imagecolorallocate($image, rand(160,255), rand(160,255), rand(160,255));
imagefilledellipse($image,rand(0,CAPTCHA_WIDTH),rand(0,CAPTCHA_HEIGHT),CAPTCHA_HEIGHT/10,CAPTCHA_HEIGHT/10,$color);
}
$image_copy = imagecreatetruecolor(CAPTCHA_WIDTH,CAPTCHA_HEIGHT);
imagecopy($image_copy, $image, 0, 0, 0, 0, CAPTCHA_WIDTH, CAPTCHA_HEIGHT);
imagecopy($image_copy, $image, 2, 0, 0, 0, CAPTCHA_WIDTH-2, CAPTCHA_HEIGHT/4);
imagecopy($image_copy, $image, 4, CAPTCHA_HEIGHT/4, 0, CAPTCHA_HEIGHT/4, CAPTCHA_WIDTH-4, CAPTCHA_HEIGHT/4);
imagecopy($image_copy, $image, 2, CAPTCHA_HEIGHT/2, 0, CAPTCHA_HEIGHT/2, CAPTCHA_WIDTH-2, CAPTCHA_HEIGHT/4);
imagedestroy($image);
imagejpeg($image_copy,null,90);
}
public static function isCaptchaValid($token,$method=Request::POST) {