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index.php
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<?php
require_once "includes/config.php";
require_once "includes/linkpwd.class.php";
// the Website Header
require "includes/ws-header.php";
if( empty($_POST['submit']) ){
?>
<h1 class="display-4">Protect your links</h1>
<p class="lead">Protect your links with a captcha and password. You can also add an expiration time. <?php echo WEB_NAME; ?> is a link protector service.</p>
<?php echo HEADER_HTMLCODE; ?>
<div>
<form method="post" action="index.php">
<div class="form-group">
<label for="enctext" class="control-label h4">Links:</label>
<textarea class="form-control" id="enctext" name="enctext" aria-describedby="textareaHelpBlock" rows="5" maxlength="5000" required></textarea>
<small id="textareaHelpBlock" class="form-text text-muted">
Enter one valid link per line. No other seperators.
max <span id="charCounter">0</span> / 5000 characters.
</small>
</div>
<hr>
<div class="form-group">
<div class="custom-control custom-switch">
<input type="checkbox" class="custom-control-input" id="enableClicknload" name="enableClicknload" aria-describedby="enableClicknloadHelpBlock" />
<label class="custom-control-label" for="enableClicknload">Click'n'Load</label>
<small id="enableClicknloadHelpBlock" class="form-text text-muted">
Adds a Click'n'Load button to import the links in <a href="https://jdownloader.org/" rel="nofollow">JDownloader</a>.
</small>
</div>
</div>
<hr>
<div class="row">
<div class="form-group col-6">
<label for="password" class="control-label">Password</label>
<input type="text" class="form-control" id="password" name="password" aria-describedby="passwordHelpBlock" />
<small id="passwordHelpBlock" class="form-text text-muted">
Optional password for your link.
</small>
</div>
<div class="form-group col-6">
<label for="expireDate" class="control-label">Link expires</label>
<select class="custom-select" name="expireDate" id="expireDate" aria-describedby="expireDateHelpBlock">
<?php if(NEVER_EXPIRE_LINK == true){ ?><option value="never">never</option><?php } ?>
<option value="1day">in 1 day</option>
<option value="1week">in 1 week</option>
<option value="2week">in 2 weeks</option>
<option selected value="1month">in 1 month</option>
<option value="6month">in 6 months</option>
<option value="1year">in 1 year</option>
</select>
<small id="expireDateHelpBlock" class="form-text text-muted">
The link will be deleted after this time.
</small>
</div>
</div><!-- /row -->
<?php if(CAPTCHA_ENABLED_LINK == true){ ?>
<div class="form-group">
<div class="custom-control custom-switch">
<input type="checkbox" class="custom-control-input" id="enableCaptcha" name="enableCaptcha" aria-describedby="enableCaptchaHelpBlock" checked />
<label class="custom-control-label" for="enableCaptcha">Captcha</label>
<small id="enableCaptchaHelpBlock" class="form-text text-muted">
To verify that it is a human and no robot.
</small>
</div>
</div>
<?php } ?>
<hr>
<?php if(CAPTCHA_ENABLED_CREATE == true){ ?>
<div class="form-group">
<?php if(CAPTCHA_SERVICE == "hcaptcha"){ ?>
<script src="https://hcaptcha.com/1/api.js" async defer></script>
<div class="h-captcha" data-sitekey="<?php echo CAPTCHA_SITEKEY; ?>"></div>
<small id="captcha_code" class="form-text text-muted">
<?php echo _('Please click this box and follow possible instructions to verify that you are a human. '); ?>
</small>
<?php } elseif(CAPTCHA_SERVICE == "recaptcha"){ ?>
<script src="https://www.google.com/recaptcha/api.js" async defer></script>
<div class="g-recaptcha" data-sitekey="<?php echo CAPTCHA_SITEKEY; ?>"></div>
<small id="captcha_code" class="form-text text-muted">
<?php echo _('Please click this box and follow possible instructions to verify that you are a human. '); ?>
</small>
<?php } else{ ?>
<span class="help-block">
<img id="captcha" src="<?php echo DEFAULT_URL; ?>/vendor/dapphp/securimage/securimage_show.php" alt="CAPTCHA Image" />
<object type="application/x-shockwave-flash" data="<?php echo DEFAULT_URL; ?>/vendor/dapphp/securimage/securimage_play.swf?audio_file=<?php echo DEFAULT_URL; ?>/vendor/dapphp/securimage/securimage_play.php&bgColor1=%23fff&bgColor2=%23fff&iconColor=%23777&borderWidth=1&borderColor=%23000" width="19" height="19"> <param name="movie" value="<?php echo DEFAULT_URL; ?>/vendor/dapphp/securimage/securimage_play.swf?audio_file=<?php echo DEFAULT_URL; ?>/vendor/dapphp/securimage/securimage_play.php&bgColor1=%23fff&bgColor2=%23fff&iconColor=%23777&borderWidth=1&borderColor=%23000" /> </object>
</span>
<input type="text" class="form-control" id="captcha_code" name="captcha_code" required />
<small id="captcha_codeHelp" class="form-text text-muted">
<?php echo _('Please enter the letters (not case sensitive) and numbers above to verify that you are a human. '); ?>
</small>
<?php } ?>
</div>
<?php } ?>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<input type="submit" name="submit" id="submit" class="btn btn-primary" value="Create Link">
</div>
</div>
</form>
</div>
<script src="<?php echo DEFAULT_URL; ?>/assets/js/charcounter.js"></script>
<?php
}
else {
?>
<h1 class="display-4">Your protected links</h1>
<?php
// debug:
// echo "<br>POST: "; print_r($_POST);
// check the Captcha
if(CAPTCHA_ENABLED_CREATE == true){
$captchaCheckIs = false;
if(CAPTCHA_SERVICE == "hcaptcha"){
$responseData = checkReCaptcha("https://hcaptcha.com/siteverify", CAPTCHA_PRIVKEY, $_POST['h-captcha-response']);
if($responseData->success) {
$captchaCheckIs = true;
}
} elseif(CAPTCHA_SERVICE == "recaptcha"){
$responseData = checkReCaptcha("https://www.google.com/recaptcha/api/siteverify", CAPTCHA_PRIVKEY, $_POST['g-recaptcha-response']);
if($responseData->success) {
$captchaCheckIs = true;
}
} else{
// Securimage
include_once 'vendor/dapphp/securimage/securimage.php';
$securimage = new Securimage();
if ($securimage->check($_POST['captcha_code'])) { $captchaCheckIs = true; }
}
// incorrect Captcha:
if(!$captchaCheckIs){
echo '<div class="alert alert-danger">'.
'We could not verify that you are a human. The captcha was incorrect. '.
'<a href="index.php" class="alert-link">Reload the Form</a> and try again.'.
'</div>';
die;
}
}
// split textarea per line, https://stackoverflow.com/a/3702430/5905273
$textInput = trim($_POST['enctext']);
$textAr = explode("\n", $textInput);
$textAr = array_filter($textAr, 'trim');
// validate links
foreach ($textAr as $inputKey => $inputLink) {
// remove possible whitespace
$inputLink = preg_replace('/\s+/', '', $inputLink);
// validate the link
if(!filter_var($inputLink, FILTER_VALIDATE_URL)) {
echo "<p>".$inputLink.": <br>";
echo 'This was no valid URL.';
unset($textAr[$inputKey]);
}
} // end. foreach
// encryption
$encryptedData = encryptLinks($textAr);
$ciphertext = $encryptedData[0];
$dataKey = $encryptedData[1];
$iv = $encryptedData[2];
// password as sha256 hash stored in database
// the hash includes $dataKey and $iv
if(!empty($_POST['password'])){
$passwordHash = hash("sha256", $dataKey.$iv.$_POST['password']);
}
// enable captcha
if(CAPTCHA_ENABLED_LINK == true && $_POST['enableCaptcha'] == "on"){
$enableCaptcha = 1;
} else{
$enableCaptcha = 0;
}
// enable click'n'load
if($_POST['enableClicknload'] == "on"){
$enableClicknload = 1;
} else{
$enableClicknload = 0;
}
// expire date:
switch ($_POST['expireDate']){
case "1day":
$expireDate = time() + (24 * 60 * 60);
break;
case "1week":
$expireDate = time() + (7 * 24 * 60 * 60);
break;
case "2week":
$expireDate = time() + (14 * 24 * 60 * 60);
break;
case "1month":
$expireDate = time() + (31 * 24 * 60 * 60);
break;
case "6month":
$expireDate = time() + (6*30 * 24 * 60 * 60);
break;
case "1year":
$expireDate = time() + (365 * 24 * 60 * 60);
break;
default:
$expireDate = 0;
}
// insert in MySQL database: ID, ciphertext, passwordHash, enableCaptcha, expireDate
require "includes/bdd.php";
$dbQuery = $db->prepare("INSERT INTO `".MYSQL_TABLEPREFIX."links` (
`ID`, `ciphertext`, `passwordHash`, `enableCaptcha`, `enableClicknload`, `expireDate`
) VALUES (
'', :ciphertext, :passwordHash, :enableCaptcha, :enableClicknload, :expireDate
);");
$dbExecData = array(
":ciphertext" => $ciphertext,
":passwordHash" => $passwordHash,
":enableCaptcha" => $enableCaptcha,
":enableClicknload" => $enableClicknload,
":expireDate" => $expireDate
);
if( !$dbQuery->execute($dbExecData) ){
echo '<div class="alert alert-danger">'.
'Error while executing the database statement.'.
'</div>';
die;
}
$pdoLastId = $db->lastInsertId();
// output
if(FANCY_LINKS){
$mailURL = DEFAULT_URL."/s/".$pdoLastId."/".bin2hex($dataKey)."/".bin2hex($iv)."/";
$badgeURL = DEFAULT_URL."/badge/".$pdoLastId."/".bin2hex($dataKey)."/".bin2hex($iv).".svg";
}else{
$mailURL = DEFAULT_URL."/show.php?id=".$pdoLastId."&key=".bin2hex($dataKey)."&iv=".bin2hex($iv);
$badgeURL = DEFAULT_URL."/badge.php?id=".$pdoLastId."&key=".bin2hex($dataKey)."&iv=".bin2hex($iv);
}
?>
<h1>Your link</h1>
<p>This is your protected link:<br> <br>
<div class="input-group mb-3">
<input class="form-control" type="text" value="<?php echo $mailURL; ?>" aria-describedby="copy-button" readonly >
<div class="input-group-append">
<script src="https://unpkg.com/clipboard@2.0.6/dist/clipboard.min.js" integrity="sha384-x6nRSkfSsKGBsvlLFHHNju+buS3zYUztVnTRz/0JKgOIk3ulS6bNce/vHOvYE2eY" crossorigin="anonymous"></script>
<script type="text/javascript"> new ClipboardJS('.btn-copy'); </script>
<button class="btn btn-outline-secondary btn-copy" type="button" id="copy-button" name="copy-button" title="Copy to clipboard"
data-clipboard-text="<?php echo $mailURL; ?>" data-toggle="tooltip" data-trigger="click" data-placement="top" data-original-title="<?php echo _("Copied!"); ?>" >copy</button>
</div>
</div>
</p>
<?php if(BADGES_ENABLED == true){ ?>
<p><a data-toggle="collapse" class="collapseLink" href="#collapseHtmlCode" aria-expanded="false" aria-controls="collapseHtmlCode">+ <?php echo _('Show me badges / icons'); ?></a></p>
<div class="collapse" id="collapseHtmlCode">
<div class="panel-heading">
<h3 class="panel-title"><?php echo _('Badge / icon'); ?></h3>
</div>
<div class="panel-body">
Image: <img src="<?php echo $badgeURL; ?>" />
<pre><code><?php echo $badgeURL; ?></code></pre>
<h5>BBCode for forums:</h5>
<pre><code>[url=<?php echo $mailURL; ?>][img]<?php echo $badgeURL; ?>[/img][/url]</code></pre>
<h5>HTML code:</h5>
<pre><code><a href="<?php echo $mailURL; ?>" title="<?php echo WEB_NAME; ?>"><img src="<?php echo $badgeURL; ?>" /></a></code></pre>
<h5>Markdown:</h5>
<pre><code>[](<?php echo $mailURL; ?>)</code></pre>
</div>
</div>
<?php } ?>
<div class="panel panel-default">
<div class="panel-heading">
<h2 class="panel-title"><?php echo _('Share your link'); ?></h2>
</div>
<div class="panel-body">
<p><?php echo _('You can share this link now on the internet.'); ?></p>
<?php if(URL_SHORTENER_ENABLED == true){ ?>
<p><?php echo _('Too long?'); ?> <a href="<?php echo URL_SHORTENER_URL.urlencode($mailURL); ?>" target="_blank"><?php echo _('You can shorten this URL</a>.'); ?></a></p>
<?php } ?>
<p><?php echo _('Share the link on'); ?></p>
<ul>
<li><a href="https://www.facebook.com/sharer/sharer.php?u=<?php echo urlencode($mailURL); ?>" target="_blank"><?php echo _('Share on Facebook'); ?></a></li>
<li><a href="https://twitter.com/share?url=<?php echo urlencode($mailURL); ?>&text=<?php echo urlencode(_('Link: ')); ?>" target="_blank"><?php echo _('Share on Twitter'); ?></a></li>
<li><a href="mailto:?to=&subject=<?php echo rawurlencode(_('Link')); ?>&body=<?php echo rawurlencode(_('Link: ') . $mailURL); ?>" target="_blank"><?php echo _('Share via email'); ?></a></li>
</ul>
</div>
</div>
<?php
}
?>
<?php
// the Website Footer
require "includes/ws-footer.php";
?>