mirror of
https://github.com/vichan-devel/vichan.git
synced 2024-12-12 15:51:17 +01:00
68 lines
1.7 KiB
PHP
68 lines
1.7 KiB
PHP
<?php
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header('Access-Control-Allow-Origin: *');
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$mode = @$_GET['mode'];
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require_once("config.php");
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require_once("functions.php");
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switch ($mode) {
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// Request: GET entrypoint.php?mode=get&extra=1234567890
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// Response: JSON: cookie => "generatedcookie", captchahtml => "captchahtml", expires_in => 120
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case "get":
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if (!isset ($_GET['extra'])) {
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die();
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}
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$extra = $_GET['extra'];
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$nojs = isset($_GET['nojs']);
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$captcha = generate_captcha($extra);
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$cookie = $captcha['cookie'];
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$html = $captcha['html'];
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if ($nojs) {
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header("Content-type: text/html");
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echo "<html><body>You do not have JavaScript enabled. To fill out the CAPTCHA, please copy the ID to the post form in the ID field, and write the answer in the answer field.<br><br>CAPTCHA ID: $cookie<br>CAPTCHA image: $html</body></html>";
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} else {
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header("Content-type: application/json");
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echo json_encode(["cookie" => $cookie, "captchahtml" => $html, "expires_in" => $expires_in]);
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}
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break;
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// Request: GET entrypoint.php?mode=check&cookie=generatedcookie&extra=1234567890&text=captcha
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// Response: 0 OR 1
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case "check":
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if (!isset ($_GET['mode'])
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|| !isset ($_GET['cookie'])
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|| !isset ($_GET['extra'])
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|| !isset ($_GET['text'])) {
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die();
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}
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cleanup($pdo, $expires_in);
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$query = $pdo->prepare("SELECT * FROM `captchas` WHERE `cookie` = ? AND `extra` = ?");
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$query->execute([$_GET['cookie'], $_GET['extra']]);
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$ary = $query->fetchAll();
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if (!$ary) {
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echo "0";
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}
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else {
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$query = $pdo->prepare("DELETE FROM `captchas` WHERE `cookie` = ? AND `extra` = ?");
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$query->execute([$_GET['cookie'], $_GET['extra']]);
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if ($ary[0]['text'] !== $_GET['text']) {
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echo "0";
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}
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else {
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echo "1";
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}
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}
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break;
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}
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