danwin1210/le-chat-php
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also fixes warning about undefined variable $numpoints

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This commit is contained in:
Daniel Winzen
2025-09-15 16:47:09 +02:00
parent 47d63a30d1
commit e24302f8ee
1 changed files with 23 additions and 15 deletions
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38
chat.php
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@@ -363,6 +363,7 @@ function route_setup(): void
$C['text_settings']=[
'dateformat' => _('<a target="_blank" href="https://php.net/manual/en/function.date.php#refsect1-function.date-parameters" rel="noopener noreferrer">Date formating</a>'),
'captchachars' => _('Characters used in Captcha'),
'captchagdfont' => _('File name or path and file name for optional GD font for captcha'),
'captchattfont' => _('Font name or path and filename for TrueType font used in some captchas'),
'redirect' => _('Custom redirection script'),
'chatname' => _('Chat name'),
@@ -677,9 +678,17 @@ function send_captcha(): void
} else {
echo _('Type the characters in the image:');
}
if($difficulty===1 || $difficulty===2 || $difficulty===4){
// optionally use custom GD font for simple, moderate and extreme captchas
if (get_setting('captchagdfont') === '') {
$gdfont = imageloadfont(5); // load 9-by-10-pixel built-in font
}else{
$gdfont = imageloadfont(get_setting('captchagdfont'));
}
$fontwidth = imagefontwidth($gdfont);
$fontheight = imagefontheight($gdfont);
}
if($difficulty===1 || $difficulty===2){
$fontwidth = imagefontwidth(5);
$fontheight = imagefontheight(5);
$CAPTCHAWIDTH = $fontwidth * 5 * 3;
$CAPTCHAHEIGHT = $fontheight * 3;
$im=imagecreatetruecolor($CAPTCHAWIDTH, $CAPTCHAHEIGHT);
@@ -697,7 +706,7 @@ function send_captcha(): void
$xoffset=0;
for($i=0; $i<5; $i++){
$xoffset+= mt_rand(0, ($CAPTCHAWIDTH - (5 * $fontwidth)) - $xoffset); // randomly shift characters to the right
imagechar($im, 5, $xoffset + $i * $fontwidth, mt_rand(0, $CAPTCHAHEIGHT - $fontheight), $code[$i], imagecolorallocate($im, mt_rand(224, 255), mt_rand(224, 255), mt_rand(224, 255)));
imagechar($im, $gdfont, $xoffset + $i * $fontwidth, mt_rand(0, $CAPTCHAHEIGHT - $fontheight), $code[$i], imagecolorallocate($im, mt_rand(224, 255), mt_rand(224, 255), mt_rand(224, 255)));
if($difficulty===2){
imagelayereffect($im,IMG_EFFECT_OVERLAY);
}
@@ -750,22 +759,17 @@ function send_captcha(): void
$fg=imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
imagefill($im, 0, 0, $bg);
imagelayereffect($im,IMG_EFFECT_NORMAL);
$fontwidth = imagefontwidth(5); // 9 pixels wide
$fontheight = imagefontheight(5); // 10 pixels high
for($i=0; $i<20; ++$i){
$leftx = mt_rand(0, $CAPTCHAWIDTH - $fontwidth);
$topy = mt_rand(0, $CAPTCHAHEIGHT - $fontheight);
for($j=0; $j<($numpoints * 2); $j+=2){
$points[$j]=$leftx + mt_rand(0, $fontwidth);
$points[$j+1]=$topy + mt_rand(0, $fontheight);
}
$numpoints=(int) mt_rand(3,6);
for($k=0; $k<($numpoints * 2); $k+=2){
$points[$k]=mt_rand(0, $CAPTCHAWIDTH);
$points[$k+1]=mt_rand(0, $CAPTCHAHEIGHT);
for($j=0; $j<($numpoints * 2); $j+=2){
$points[$j]=mt_rand(0, $CAPTCHAWIDTH); // x coordinate
$points[$j+1]=mt_rand(0, $CAPTCHAHEIGHT); // y coordinate
}
imagefilledpolygon( $im, $points, $numpoints, imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255)));
}
imagefilter($im, IMG_FILTER_SMOOTH, 3);
$chars=[];
$x = $y = 0;
imagelayereffect($im,IMG_EFFECT_NORMAL);
@@ -798,9 +802,9 @@ function send_captcha(): void
imagelayereffect($im, IMG_EFFECT_OVERLAY);
$fg = imagecolorallocate($im, 255, 255, 255);
if($i<5){ // characters in solution
imagechar($im, 5, $chars[$i]['x'], $chars[$i]['y'], $code[$i], $fg);
imagechar($im, $gdfont, $chars[$i]['x'], $chars[$i]['y'], $code[$i], $fg);
}else{ // spurious characters
imagechar($im, 5, $chars[$i]['x'], $chars[$i]['y'], $captchachars[mt_rand(0, $length)], $fg);
imagechar($im, $gdfont, $chars[$i]['x'], $chars[$i]['y'], $captchachars[mt_rand(0, $length)], $fg);
}
}
imagelayereffect($im, IMG_EFFECT_OVERLAY);
@@ -4485,6 +4489,7 @@ function init_chat(): void
['messageexpire', '14400'],
['messagelimit', '150'],
['maxmessage', 2000],
['captchagdfont', ''],
['captchattfont', '/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf'],
['captchatime', '600'],
['colbg', '000000'],
@@ -4944,6 +4949,9 @@ function update_db(): void
if($dbversion<50){
$db->exec('INSERT INTO ' . PREFIX . "settings (setting, value) VALUES ('noguestpm', '0');");
}
if($dbversion<51){
$db->exec('INSERT INTO ' . PREFIX . "settings (setting,value) VALUES ('captchagdfont', '');");
}
update_setting('dbversion', DBVERSION);
if($msgencrypted!==MSGENCRYPTED){
if(!extension_loaded('sodium')){
@@ -5146,7 +5154,7 @@ function load_lang(): void
function load_config(): void
{
define('VERSION', '1.24.1'); // Script version
define('DBVERSION', 50); // Database layout version
define('DBVERSION', 51); // Database layout version
define('MSGENCRYPTED', false); // Store messages encrypted in the database to prevent other database users from reading them - true/false - visit the setup page after editing!
define('ENCRYPTKEY_PASS', 'MY_SECRET_KEY'); // Recommended length: 32. Encryption key for messages
define('AES_IV_PASS', '012345678912'); // Recommended length: 12. AES Encryption IV