From 10b1ace835d908d32f99874facf8811534087d5b Mon Sep 17 00:00:00 2001
From: Minteck <contact@minteck.org>
Date: Mon, 6 Jun 2022 17:10:14 +0200
Subject: Initial commit

---
 Authentication/Callback/index.php | 63 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Authentication/Callback/index.php

(limited to 'Authentication/Callback')

diff --git a/Authentication/Callback/index.php b/Authentication/Callback/index.php
new file mode 100644
index 0000000..3f50e1c
--- /dev/null
+++ b/Authentication/Callback/index.php
@@ -0,0 +1,63 @@
+<?php
+
+header("Content-Type: text/plain");
+// TODO: handle errors
+
+if (!isset($_GET['code'])) {
+    die();
+}
+
+$appdata = json_decode(file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/Private/Application.json"), true);
+
+$crl = curl_init('https://account.minteck.org/hub/api/rest/oauth2/token');
+curl_setopt($crl, CURLOPT_RETURNTRANSFER, true);
+curl_setopt($crl, CURLINFO_HEADER_OUT, true);
+curl_setopt($crl, CURLOPT_POST, true);
+curl_setopt($crl, CURLOPT_HTTPHEADER, [
+    "Authorization: Basic " . base64_encode($appdata["id"] . ":" . $appdata["secret"]),
+    "Content-Type: application/x-www-form-urlencoded",
+    "Accept: application/json"
+]);
+curl_setopt($crl, CURLOPT_POSTFIELDS, "grant_type=authorization_code&redirect_uri=" . urlencode("http" . ($_SERVER['HTTPS'] ? "s" : "") . "://" . $_SERVER['HTTP_HOST'] . "/Authentication/Callback") . "&code=" . $_GET['code']);
+
+$result = curl_exec($crl);
+$result = json_decode($result, true);
+
+curl_close($crl);
+
+if (isset($result["access_token"])) {
+    $crl = curl_init('https://account.minteck.org/hub/api/rest/users/me');
+    curl_setopt($crl, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($crl, CURLINFO_HEADER_OUT, true);
+    curl_setopt($crl, CURLOPT_HTTPHEADER, [
+        "Authorization: Bearer " . $result["access_token"],
+        "Accept: application/json"
+    ]);
+
+    $result = curl_exec($crl);
+    $result = json_decode($result, true);
+
+    if (!file_exists($_SERVER['DOCUMENT_ROOT'] . "/Private/SessionTokens")) mkdir($_SERVER['DOCUMENT_ROOT'] . "/Private/SessionTokens");
+
+    if (in_array($result["id"], json_decode(file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/Private/AllowedUsers.json"), true))) {
+        $token = bin2hex(random_bytes(32));
+        file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/Private/SessionTokens/" . $token, json_encode($result));
+        session_start();
+        session_set_cookie_params([
+            'lifetime' => 0,
+            'path' => '/',
+            'domain' => "",
+            'secure' => true,
+            'httponly' => true,
+            'samesite' => 'None'
+        ]);
+        setcookie("BITS_SESSION_TOKEN", $token, 0, "/", "", true, true);
+        header("Set-Cookie: BITS_SESSION_TOKEN=" . $token . "; SameSite=None; Path=/; Secure; HttpOnly");
+
+        header("Location: /Authentication/Success");
+    } else {
+        header("Location: /Authentication/Disallowed");
+    }
+
+    die();
+}
\ No newline at end of file
-- 
cgit