weichenlin/email_encoder.php Secret

## email_encoder.php
<?php

function rand_string($min_len, $max_len, $charset = "abcdefghijklmnopqrstuvwxyz")
{
    $set_len = strlen($charset);
    if (0 == $set_len) { return "";}

    $out_len = rand($min_len, $max_len);
    $out = "";
    for ($i = 0; $i < $out_len; $i++) {
        $index = rand(0, $set_len - 1);
        $out .= $charset[$index];
    }
    return $out;
}

function make_script($mail)
{
    $mail_html = "<a href=\"mailto:{$mail}\">{$mail}</a>";

    $jselements = "";
    $xor = rand(1, 255);
    for ($i=0, $j=strlen($mail_html); $i < $j; $i++) {
        $hex = sprintf("%02s", dechex(ord($mail_html[$i]) ^ $xor));
        $jselements .= ("" == $jselements ? "\"\\x{$hex}\"" : ",\"\\x{$hex}\"");
    }

    $encoded_var_name = rand_string(2, 10);
    $jscode = "var {$encoded_var_name} = [ {$jselements} ];";
    $jscode .= "for(var i=0; i<{$encoded_var_name}.length; i++){document.write(String.fromCharCode({$encoded_var_name}[i].charCodeAt(0) ^ {$xor}));}";

    $jscode = "<script type=\"text/javascript\">{$jscode}</script>";
    return $jscode;
}

$mail = "";
$ok = false;
$jscode = "";
if (isset($_POST['email']) && "" != $_POST['email']) {
    $mail = $_POST['email'];
    $jscode = make_script($mail);
    $ok = true;
}

?>
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>JS Email Encoder</title>
</head>
<body>
    <p>請填入要編碼的Email</p>
    <form method="post">
        E-mail: <input type="email" name="email" value="<?=$mail?>"><br>
        <input type="submit" value="送出">
    </form>
    <?php if ($ok) { ?>
    <p>
        編碼已完成，請複製以下JavaScript程式，貼在HTML要顯示Email處即可。
    </p>
    <textarea cols="100" rows="10"><?=htmlentities($jscode)?></textarea>
    <p>
        預覽:
        <?=$jscode?>
    </p>
    <?php } ?>
</body>
</html>
	<?php

	function rand_string($min_len, $max_len, $charset = "abcdefghijklmnopqrstuvwxyz")
	{
	$set_len = strlen($charset);
	if (0 == $set_len) { return "";}

	$out_len = rand($min_len, $max_len);
	$out = "";
	for ($i = 0; $i < $out_len; $i++) {
	$index = rand(0, $set_len - 1);
	$out .= $charset[$index];
	}
	return $out;
	}

	function make_script($mail)
	{
	$mail_html = "<a href=\"mailto:{$mail}\">{$mail}</a>";

	$jselements = "";
	$xor = rand(1, 255);
	for ($i=0, $j=strlen($mail_html); $i < $j; $i++) {
	$hex = sprintf("%02s", dechex(ord($mail_html[$i]) ^ $xor));
	$jselements .= ("" == $jselements ? "\"\\x{$hex}\"" : ",\"\\x{$hex}\"");
	}

	$encoded_var_name = rand_string(2, 10);
	$jscode = "var {$encoded_var_name} = [ {$jselements} ];";
	$jscode .= "for(var i=0; i<{$encoded_var_name}.length; i++){document.write(String.fromCharCode({$encoded_var_name}[i].charCodeAt(0) ^ {$xor}));}";

	$jscode = "<script type=\"text/javascript\">{$jscode}</script>";
	return $jscode;
	}

	$mail = "";
	$ok = false;
	$jscode = "";
	if (isset($_POST['email']) && "" != $_POST['email']) {
	$mail = $_POST['email'];
	$jscode = make_script($mail);
	$ok = true;
	}

	?>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>JS Email Encoder</title>
	</head>
	<body>
	<p>請填入要編碼的Email</p>
	<form method="post">
	E-mail: <input type="email" name="email" value="<?=$mail?>"><br>
	<input type="submit" value="送出">
	</form>
	<?php if ($ok) { ?>
	<p>
	編碼已完成，請複製以下JavaScript程式，貼在HTML要顯示Email處即可。
	</p>
	<textarea cols="100" rows="10"><?=htmlentities($jscode)?></textarea>
	<p>
	預覽:
	<?=$jscode?>
	</p>
	<?php } ?>
	</body>
	</html>